Настройки

Укажите год
-

Небесная энциклопедия

Космические корабли и станции, автоматические КА и методы их проектирования, бортовые комплексы управления, системы и средства жизнеобеспечения, особенности технологии производства ракетно-космических систем

Подробнее
-

Мониторинг СМИ

Мониторинг СМИ и социальных сетей. Сканирование интернета, новостных сайтов, специализированных контентных площадок на базе мессенджеров. Гибкие настройки фильтров и первоначальных источников.

Подробнее

Форма поиска

Поддерживает ввод нескольких поисковых фраз (по одной на строку). При поиске обеспечивает поддержку морфологии русского и английского языка
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Ведите корректный номера.
Укажите год
Укажите год

Применить Всего найдено 5044. Отображено 200.
10-05-2016 дата публикации

ИЗДЕЛИЯ, ВКЛЮЧАЮЩИЕ МЕМБРАНЫ ИЗ РАСШИРЕННОГО ПОЛИТЕТРАФТОРЭТИЛЕНА С ИЗВИЛИСТЫМИ ТОНКИМИ ВОЛОКНАМИ

Номер: RU2583395C2

Изобретение относится к мембранам из расширенного политетрафторэтилена, содержащим извилистые тонкие волокна, имеющим удлинение в одном направлении, равное 50%, и предел прочности матрицы при растяжении 50 МПа. Изделие получают путем растягивания высушенной экструдированной ленты политетрафторэтилена в одном направлении с образованием исходной мембраны из расширенного политетрафторэтилена; и сжатием мембраны из расширенного фторполимера в одном направлении под действием тепла или путем добавления растворителя. Мембрана из расширенного политетрафторэтилена может включать микроструктуру практически только из тонких волокон. Изобретение позволяет достичь высокого удлинения при сохранении прочностных характеристик фторполимерной мембраны. 6 н. и 32 з.п. ф-лы, 25 ил., 1 табл., 5 пр.

Подробнее
10-02-2012 дата публикации

ПОДЛОЖКА С ЭЛЕКТРОНОДОНОРНОЙ ПОВЕРХНОСТЬЮ, СОДЕРЖАЩЕЙ ЧАСТИЦЫ МЕТАЛЛА, ВКЛЮЧАЯ ПАЛЛАДИЙ

Номер: RU2441672C2
Принадлежит: БАКТИГАРД АБ (SE)

Изобретение относится к медицине. Описана подложка, имеющая электронодонорную поверхность, на которой имеются металлические частицы, содержащие палладий и по меньшей мере один металл, выбранный из группы, состоящей из золота, рутения, родия, осмия, иридия и платины, причем количество указанных металлических частиц составляет примерно от 0,001 до 8 мкг/см2. Примерами изделий с подобным покрытием являются контактные линзы, стимуляторы сердца, электроды для стимуляторов сердца, стенты, зубные имплантаты, грыжевые сетки и ячеистые структуры, оборудование для центрифугирования крови, хирургические инструменты и другие. Модифицируют поверхностные свойства подложки, влияющие на ее биосовместимость и антимикробные свойства. 4 н. и 14 з.п. ф-лы, 4 табл.

Подробнее
11-10-2017 дата публикации

ЛАТЕКС, СОДЕРЖАЩИЙ ВОДУ И СТИРОЛЬНЫЙ БЛОК-СОПОЛИМЕР, И СПОСОБ ПОЛУЧЕНИЯ ИЗДЕЛИЙ ИЗ НЕГО

Номер: RU2632873C2

Из латекса, содержащего воду и стирольный блок-сополимер, где стирольный блок-сополимер содержит 2 или более поли(винилароматических) блока и по меньшей мере один блок полимеризованного сопряженного диена, где средневесовая молекулярная масса стирольного блок-сополимера составляет от 170000 до 220000, средневесовая молекулярная масса поли(винилароматических) блоков находится в диапазоне от 9000 до 14000 и содержание поли(винилароматических) блоков в стирольном блок-сополимере находится в диапазоне от 9 до 14% от всего стирольного блок-сополимера, и вулканизирующее средство, способом, включающим покрытие поверхности латексом с получением пленки, где латекс содержит вулканизирующее средство, получают изделия с увеличенным сопротивлением растяжению и комфортом. Изобретение также относится к стирольному блок-сополимеру, который особенно пригоден для использования в таком латексе. 4 н. и 10 з.п. ф-лы, 5 табл., 3 пр.

Подробнее
24-09-2018 дата публикации

Номер: RU2016133621A3
Автор:
Принадлежит:

Подробнее
07-03-2018 дата публикации

Номер: RU2016104112A3
Автор:
Принадлежит:

Подробнее
15-07-2019 дата публикации

ИНСТРУМЕНТ ДЛЯ ОТДЕЛЕНИЯ МАГНИТНЫХ МИШЕНЕЙ И ЕГО ПРИМЕНЕНИЕ

Номер: RU2694471C1

Группа изобретений относится к инструменту для отделения магнитных мишеней и его применению. Наночастицы содержат ядро наночастицы, изготовленное из магнитных веществ, и оболочку наночастицы, образованную посредством присоединения мономерного модификатора поверхности к ядру наночастицы с использованием инициатора и/или сшивающего агента. Полученные наночастицы могут обволакивать камни в мочеточнике, а затем мелкие камни, оставшиеся в организме, могут быть быстро удалены без повреждения организма под действием инструмента для отделения магнитных мишеней. Камни можно вытягивать и двигать без повреждения стенки мочеточника, и наночастицы размещаются удобным образом без минимального сдвига. 2 н. и 13 з.п. ф-лы, 29 ил., 20 пр.

Подробнее
27-11-1996 дата публикации

БИОСОВМЕСТИМЫЙ ГИДРОГЕЛЬ

Номер: RU95100525A
Автор: UA], Павлык Б.И.
Принадлежит:

Биосовместимый гидрогель предназначен для исправления косметических или функциональных дефектов (например, грудных желез, голосовых связок, пениса и т. д. путем их эндопротезирования), для создания внутритканевых депо лекарственных препаратов пролонгированного действия, для использования в качестве электропроводных иммерсионных сред и для пожизненного тампонирования каверн. Он содержит полимер на основе акриламида, полученный с использованием инициатора радикальной полимеризации в апирогенной воде в качестве дисперсионной среды. Для повышения упругости, формоустойчивости и стабильности массивных имплантатов и соответственно лечебной или косметической эффективности преимущественно при эндопротезировании гидрогель содержит поперечно сшитый полиакриламид, полученный с использованием биосовместимого сшивающего агента, преимущественно метилен-бис-акриламида, и предпочтительно с использованием в качестве инициатора полимеризации смеси персульфата аммония и тетраметилэтилендиамина. Предпочтительная ...

Подробнее
18-08-2017 дата публикации

Thrombektomievorrichtung und System für die Extraktion von Gefässthromben aus einem Blutgefäß

Номер: DE212015000300U1
Автор:
Принадлежит: ANACONDA BIOMED S L, Anaconda Biomed S.L.

Thrombektomievorrichtung umfassend einen Zuführungskatheter (1), einen Dilator-Katheter (5) und einen Trichter (3), welche ein distales Ende und ein proximales Ende definieren, wobei der genannte Trichter (3) in einer zurückgezogenen Stellung und in einer aufgespannten Stellung platziert werden kann, dadurch gekennzeichnet, dass der genannte Trichter (3) auch eine Überdeckung (4) umfasst, wobei der Durchmesser des distalen Endes des Trichters (3) in der aufgespannten Stellung größer als in der zurückgezogenen Stellung ist.

Подробнее
21-02-2002 дата публикации

Medizintechnisches Produkt, Verfahren zu seiner Herstellung und Bereitstellung für die Chirurgie

Номер: DE0010117099A1
Принадлежит:

Ein medizintechnisches Produkt zur Adhäsionsprophylaxe für die postoperative Verhinderung von Verwachsungen im Körper umfasst mindestens einen Polyvinylalkohol, ausgewählt aus der Gruppe, bestehend aus unvernetztem PVA mit einem Molekulargewicht von 15000 bis 400000, vernetztem PVA und Mischungen davon. Das Molekulargewicht des PVA bzw. der Mischung ist so gewählt, dass er im Wesentlichen ohne Degradation der PVA-Moleküle über die Niere ausscheidbar ist.

Подробнее
18-10-2012 дата публикации

Thixotrope Zusammensetzung, insbesondere zur postchirurgischen Adhäsionsprophylaxe

Номер: DE102011007528A1
Принадлежит:

Die Erfindung betrifft eine thixotrope Zusammensetzung, vorzugsweise in Form eines Hydrogels, umfassend ein filmbildendes Polymer, Gellan und/oder Agar, ein physiologisch verträgliches Metallsalz und Wasser. Die Erfindung betrifft auch ein Behältnis enthaltend die thixotrope Zusammensetzung. Weiterhin betrifft die Erfindung eine Austragsvorrichtung, enthaltend die thixotrope Zusammensetzung. Im Übrigen betrifft die Erfindung auch ein Verfahren zur Herstellung einer thixotropen Zusammensetzung, bei welchem ein filmbildendes Polymer, Gellan und/oder Agar, ein physiologisch verträgliches Metallsalz sowie Wasser, vorzugsweise unter Erhalt eines thixotropen Hydrogels, miteinander gemischt werden.

Подробнее
25-07-2001 дата публикации

Fixation devices for tissue repair

Номер: GB0000113697D0
Автор:
Принадлежит:

Подробнее
18-12-1996 дата публикации

PVC material for flexible medical products

Номер: GB0002301822A
Принадлежит:

Flexible film and tubing for medical products is manufactured from a PVC compound, comprising an amount of ultra high molecular weight (UHMW) PVC resin having an inherent viscosity of about 1.25 or greater, and about 43 percent by weight or greater of a medically acceptable plasticizer, such as tri (2-ethylhexyl) trimellitate (TOTM), di-(2-ethylhexyl) phthalate, acetyl tri-n-butyl citrate, n-butyryl tri-n-hexyl citrate, acetyl tri-n-octyl citrate and acetyl tri-n-decyl citrate. Containers such as blood bags are made from the film.

Подробнее
07-11-1984 дата публикации

Vinyl chloride polymer composition and medical devices made thereof

Номер: GB0002139231A
Принадлежит:

A radiation sterilized medical device made of a resin compound comprising 100 parts by weight of vinyl chloride resin, 0.001 to 5 parts by weight of at least one metal oxide selected from the group consisting of magnesium oxide, calcium oxide, and zinc oxide and 5 to 200 parts by weight of a dialkyl phthalate of the formula wherein m and n are each an integer of the value of substantially 6 to 12 and the average of m an n, (m+n)/2, is not more than 11.5. The invention also provides the method of preparing said medical device and the specified resin.

Подробнее
10-06-1987 дата публикации

VINYL CHLORIDE POLYMER COMPOSITION AND MEDICAL DEVICES MADE THEREOF

Номер: GB0002139231B
Принадлежит: TERUMO CORP, * TERUMO KABUSHIKI KAISHA

Подробнее
15-02-2006 дата публикации

Composition and uses thereof

Номер: GB0000600336D0
Автор:
Принадлежит:

Подробнее
07-08-1985 дата публикации

SURGICAL FASTENER AND MEANS FOR APPLYING SAME

Номер: GB0002118665B

Подробнее
12-12-2007 дата публикации

Implantable materials and methods for inhibiting tissue adhesion formation

Номер: GB0000721331D0
Автор:
Принадлежит:

Подробнее
20-11-1985 дата публикации

Material of connective elements for soft tissues and internal organs

Номер: GB0002158724A
Принадлежит:

The material of connective elements for soft tissues and internal organs consists of a copolymer of N-vinylpyrrolidone and alkyl ethers of acrylic and/or methacrylic acids, in which an alkyl group contains 2-8 carbon atoms. The copolymer is characterized by a viscosity in the range of 0.3 to 0.8 dl/g and contains components at the following ratio in mole %: N-vinylpyrrolidone: 40-90; Alkyl ethers of acrylic and/or methacrylic acids: 10-60.

Подробнее
24-06-2015 дата публикации

Haemostatic device

Номер: GB0201508014D0
Автор:
Принадлежит:

Подробнее
07-08-1985 дата публикации

CONNECTIVE ELEMENTS

Номер: GB0008516864D0
Автор:
Принадлежит:

Подробнее
25-07-2018 дата публикации

Aneurysm treatment apparatus

Номер: GB0002558920A
Принадлежит:

Aneurysm treatment apparatus includes a catheter assembly (10, Fig 1) comprising a catheter 12 with preferably has a steerable distal end (14, Fig 1). A pouch 40 is further disposed over the distal end of the catheter 12 so as to be in co-axial overlying relationship therewith. A constraining sheath 60 may further be disposed over a major portion of the pouch and has a proximal portion 64 which is bonded to the catheter 12 but terminates short of the distal end 26 of the catheter 12, so as to leave a distal end of the pouch 40 exposed. In use, the catheter can be steered into an aneurysm sac (102, Fig 11) and filler material fed through the catheter 12 in order to fill the pouch 40. The pouch 40 will expand from its distal end 44 with filler material and gradually slide off the sheath 12 as it fills the aneurysm sac 102. The sheath 60 prevents the pouch 40 from expanding proximally, and potentially adversely affecting the filling process.

Подробнее
14-06-2000 дата публикации

Controlled release of miotil and mydriatic drugs in the anterior chamber.

Номер: AP0000000850A
Принадлежит:

The present invention relates to compositions which maintain the structural integrity of the anterior chamber of the eye during ophthalmologic surgery, thereby protecting the tissues that form and line the anterior segment from potential damage and simultaneously providing sustained delivery of a miotic or mydriatic agent. The present invention provides for compositions which comprise a viscoelastic polymer, wherein sustained release of a miotic or mydriatic agent is mediated by ionic interactions, as well as for compositions wherein .sustained release of a miotic or mydriatic agent is mediated by microcapsules or copolymer micelles.

Подробнее
30-09-1999 дата публикации

Controlled release of pharmaceuticals in the anterior chamber of the eye.

Номер: AP0009901655A0
Принадлежит:

The present invention relates to compositions which maintain the structural integrity of the anterior chamber of the eye during ophthalmologic surgery, thereby protecting the tissues that form and line the anterior segment from potential damage and simultaneously providing sustained delivery of pharmaceuticals, including miotic, mydriatic or anesthetic agents.

Подробнее
31-10-1997 дата публикации

Controlled release of motil and mydriatic drugs in the anterior chamber

Номер: AP0009701099A0
Автор:
Принадлежит:

Подробнее
18-04-2003 дата публикации

Controlled release of pharmaceuticals in the anterior chamber of the eye

Номер: OA0000011158A
Принадлежит:

Подробнее
11-12-2002 дата публикации

Controlled release of miotic and mydriatic drugs in the anterior chamber

Номер: OA0000010744A
Принадлежит:

Подробнее
31-10-1997 дата публикации

Controlled release of motil and mydriatic drugs in the anterior chamber

Номер: AP0009701099D0
Автор:
Принадлежит:

Подробнее
15-01-2008 дата публикации

CYANOACRYLATE COMPREHENSIVELY INHIBITORS AND A TRÜBUNGSMITTEL

Номер: AT0000381290T
Принадлежит:

Подробнее
15-09-2005 дата публикации

NONOXIDIZING, MEDICAL POLYMER IMPLANT

Номер: AT0000302032T
Принадлежит:

Подробнее
15-11-2010 дата публикации

MANUFACTURING PROCESS FOR PRODUCTS OUT NOT EXPANDING, POROUS POLYTETRAFLUORETHYLENE (PTFE)

Номер: AT0000485936T
Принадлежит:

Подробнее
15-04-2012 дата публикации

MEDICAL INSTRUMENTS WITH IMPROVED ONE WIRKSTOFFREISETZUNGSPROFIL

Номер: AT0000550050T
Принадлежит:

Подробнее
15-04-1999 дата публикации

GLOVE AND PROCEDURE FOR ITS PRODUCTION

Номер: AT0000177600T
Принадлежит:

Подробнее
15-06-2005 дата публикации

RADIALLY EXPAND-CASH POLYTETRAFLUORETHYLENE AND OUT OF IT FIGURATION EXPAND-CASH ENDOVASKULÄRE STENTS

Номер: AT0000296140T
Принадлежит:

Подробнее
15-09-2006 дата публикации

SURGICAL SOFT PARTS TISSUE NET

Номер: AT0000337033T
Принадлежит:

Подробнее
15-01-2004 дата публикации

PROCEDURE FOR THE TREATMENT OF URINARY INCONTINENCE OF MAMMALS

Номер: AT0000256437T
Принадлежит:

Подробнее
15-02-2004 дата публикации

RADIONUCLIDES MICRO PARTICLES IN GROUP WITH ELASTOMERI HOSE FOR ENDOVASKULARE THERAPY

Номер: AT0000258447T
Автор: DENK ROMAN, DENK, ROMAN
Принадлежит:

Подробнее
15-01-2005 дата публикации

TRANSPLANT CATHETER F�R OF VASKULARES ENTRANCE SYSTEM

Номер: AT0000285815T
Принадлежит:

Подробнее
15-03-2004 дата публикации

DEVICE FOR THE TREATMENT OF A BODY CONTAINER

Номер: AT0000260757T
Принадлежит:

Подробнее
21-03-2019 дата публикации

Method of laminating absorbable semi-crystalline polymeric films

Номер: AU2017325685A1
Принадлежит: Spruson & Ferguson

The invention relates to novel processes for the lamination of semi-crystalline, high-melting point, low glass transition polymeric films, which are extruded and subsequently laminated on various thermally sensitive substrates to form laminated medical device constructs in a specific time interval to allow low processing temperatures to avoid polymer film and/or substrate degradation or heat-related distortions. Also disclosed are laminated medical device constructs made from such processes.

Подробнее
18-11-2021 дата публикации

Segmented eva intravaginal rings

Номер: AU2020252104A1
Принадлежит:

Disclosed herein are segmented, EVA intravaginal rings that release 17β-estradiol and progesterone with specific pharmacokinetics useful for treating, ameliorating, and preventing symptoms associated with menopause and vulvar and vaginal atrophy.

Подробнее
20-11-2001 дата публикации

Cardiac disease treatment and device

Номер: AU0005356501A
Принадлежит:

Подробнее
02-01-2001 дата публикации

Graft-catheter vascular access system

Номер: AU0005494000A
Принадлежит:

Подробнее
01-11-2012 дата публикации

Intraocular lens insertion device

Номер: AU2011232876A1
Принадлежит:

A cartridge ( 103 ) for an intraocular lens insertion device is disclosed. An example cartridge may include an intraocular lens insertion cartridge body having a distal end and a proximal end and configured to receive an intraocular lens for insertion into a patient's eye through an incision; the intraocular lens insertion cartridge body having an inner surface comprising at least one polymeric material having a hardness greater than about 50D and an elongation at break greater than about 150%; the inner surface of the intraocular lens insertion cartridge body defining an at least partially tapering insertion pathway disposed within the intraocular lens insertion cartridge body and extending from the proximal end to the distal end of the intraocular lens insertion cartridge body.

Подробнее
03-07-2014 дата публикации

Helical hybrid stent

Номер: AU2010240626B2
Принадлежит:

An expandable helical stent is provided, wherein the stent may be formed of a main stent component and a securement. The main stent component is formed from a flat strip having one or more undulating side bands (401, 402) that may be connected to form geometrically shaped cells (430) and are helically wound to form a stent. The helical coils of the main stent component may be spaced apart or nestled to each other. The nestling of the undulation of adjacent helical windings contributes to maintaining the tubular shape and uniformity of the helically coiled stent. Alternatively, the flat strip may comprise a single undulating pattern. At the ends of the main stent component are end bands 407), which when wound, form a cylindrical ring. In one embodiment, one or more struts of the main stent component may have a width sufficient to include one or more fenestrations. The fenestrated struts may be connected by loops or turns wherein the material is narrower than that of the fenestrated struts ...

Подробнее
30-01-2002 дата публикации

Biocompatible, expansile material and stent

Номер: AU0008061801A
Принадлежит:

Подробнее
03-09-2015 дата публикации

Radiopaque polymers for medical devices

Номер: AU2014214841A1
Принадлежит:

Radiopaque polymer compositions and methods for making the compositions are provided. These radiopaque polymer compositions include polymer compositions comprising a crosslinked polymer network, the network comprising a first repeating unit derived from a monofunctional monomer and a second repeating unit derived from a multifunctional non-iodinated monomer wherein neither of the two monomers is fluorinated. Devices formed from radiopaque polymer compositions are also provided.

Подробнее
02-06-2016 дата публикации

Medical device hybrid polymeric structures and coatings with improved lubricity and durability

Номер: AU2015209579A1
Принадлежит:

A method for making a tubular medical device having a hybrid polymeric structure includes forming a first layer comprising a non-woven fibrous matrix made of a first polymeric material and forming a second layer comprising a second polymeric material about the first layer such that at least a portion of the second polymeric material of the second layer embeds into at least a portion of the first polymeric material of the first layer.

Подробнее
30-04-2015 дата публикации

Devices and methods related to deposited support structures

Номер: AU2013338009A1
Принадлежит:

The present disclosure describes medical devices comprising a bio-corrodible stent member and a graft member. The bio-corrodible stent member can comprise a metal applied directly to the graft member via a vapor deposition process, such as a chemical or physical vapor deposition process.

Подробнее
13-05-2021 дата публикации

Devices for occlusion of an atrial appendage

Номер: AU2016260549B2
Принадлежит:

Various aspects of the present disclosure are directed toward apparatuses, methods, and systems as relating to occlusion. In certain instances, the apparatuses, methods, and systems may include a device for placement in vessels, appendages, and openings in a body. The device may include a unitary frame having a face portion that includes a center frame portion a plurality of elongate members.

Подробнее
23-05-2013 дата публикации

A stent graft with double ePTFE-layered-system with high plasticity and high rigidity

Номер: AU2011353520A1
Принадлежит:

A vascular prosthesis and method are disclosed comprising a first flexible stent having a lattice structure with a compacted configuration and an expanded configuration, a second flexible stent inside the first flexible stent to form a tubular structure, a first film layer of graft material such as expanded polytetrafluoroethylene sandwiched between the first and second flexible stents, and a second film layer of expanded polytetrafluoroethylene sandwiched between the first and second flexible stents, the second layer having a higher rigidity and a lower plasticity than the first layer.

Подробнее
24-05-2018 дата публикации

Pre-filled plastic syringe containing a VEGF antagonist

Номер: AU2016356047A1
Принадлежит: Spruson & Ferguson

The present invention relates to a pre-filled syringe containing a VEGF antagonist and comprising a plastic barrel which is silicone-free, kits comprising this syringe and the use of the syringe for the administration of a VEGF antagonist in the treatment of ocular diseases.

Подробнее
12-12-1985 дата публикации

MULTIPLE BLOOD BAG OF NON-EXTRACTIBLE PLASTIC

Номер: AU0000548407B2
Принадлежит:

Подробнее
10-10-1988 дата публикации

PIEZOLECTRIC NERVE GUIDANCE CHANNELS

Номер: AU0001487688A
Принадлежит:

Подробнее
10-07-1995 дата публикации

Flexible polyvinyl chloride article and method of making

Номер: AU0001373095A
Принадлежит:

Подробнее
10-08-1988 дата публикации

HEMOLYSIS INHIBITOR AND PLASTICIZER

Номер: AU0001103288A
Принадлежит:

Подробнее
21-12-2000 дата публикации

GRAFT-CATHETER VASCULAR ACCESS SYSTEM

Номер: CA0002377483A1
Автор: DIFIORE, ATTILIO E.
Принадлежит:

A vascular access device, for implantation at least partially below the skin of a patient to provide an arteriovenous fistula, includes a graft portion coupled to a catheter portion. The graft portion is sutured to an opening in an artery while the catheter portion is inserted into a vein so that its end lies within the vein downstream from the point of entry into the vein. The device may be comprised of ePTFE with an outer polyurethane coating or the graft portion may comprise ePTFE with an outer polyurethane coating and the catheter portion may comprise polyurethane. There may also be an inner polyurethane coating. Alternatively, the device may be comprised entirely of polyurethane.

Подробнее
10-08-2006 дата публикации

VASO-OCCLUSIVE DEVICES INCLUDING NON-BIODEGRADABLE BIOMATERIALS

Номер: CA0002596483A1
Принадлежит:

Подробнее
29-08-2017 дата публикации

FIBER MATRIX FOR MAINTAINING SPACE IN SOFT TISSUES

Номер: CA0002764862C
Принадлежит: OPTONOL LTD., OPTONOL LTD

A fiber matrix is provided for maintaining space in soft tissue, for example for use in procedures for assisting drainage of aque-ous humor from an eye to treat glaucoma. The fiber matrix comprises a plurality of crossing fibers forming a mesh with a plurality of void spaces. The fibers and void spaces are sized and arranged so as to permit passage of fluid through the fiber matrix and to inhibit formation of scar tissue through the fiber matrix. The fibers may comprise a polymeric material, and the fiber matrix may be manufactured by elec-trospinning. The fibers may comprise a biostable and/or a biodegradable material. In one method of using a fiber matrix, the fiber ma-trix is positioned under a scleral flap, with at least part of the fiber matrix under the scleral flap.

Подробнее
23-06-1987 дата публикации

ANTIMICROBIAL FABRIC FOR SURGICAL DRAPES

Номер: CA1223208A
Принадлежит: SURGIKOS INC, SURGIKOS, INC.

A nonwoven fabric having antimicrobial properties suitable for use as a surgical drape is disclosed. The fabric is bonded with a bonder that contains a polyhexylmethylene biguanide salt as the antimicrobial agent. The bonder may also contain a rewetting agent.

Подробнее
03-09-1985 дата публикации

MULTIPLE BLOOD BAG MADE OF PLASTIC SUBSTANTIALLY FREE OF BLOOD-EXTRACTABLE PLASTICIZERS

Номер: CA1192873A
Принадлежит: MILES LAB, MILES LABORATORIES, INC.

MULTIPLE BLOOD BAG SYSTEM MADE OF PLASTIC SUBSTANTIALLY FREE OF BLOOD EXTRACTABLE PLASTICIZERS of the Invention An improved multiple blood bag system is disclosed in which donor as well as transfer bags are made of polymeric substances which are substantially free of bloodextractable plasticizers. The polymeric substance for a donor bag can be the same or different from that of a transfer bag. The polymeric substances are selected so that when whole blood or packed red cells are stored in a donor bag of such material for up to 21 days, the degree of hemolysis is such that the amount of surviving red cells is sufficient for clinical requirements. The polymeric substances also are favorable in the functions for which transfer bags are used such as platelet storage, cryoprecipitate collection and the like.

Подробнее
14-02-1984 дата публикации

DOUBLE-LATCHED PLASTIC LIGATING CLIP

Номер: CA1162126A
Принадлежит: ETHICON INC, ETHICON, INC.

DOUBLE-LATCHED PLASTIC LIGATING CLIPS Ligating clips of absorbable or nonabsorbable polymeric materials are formed by two hinged leg members which interlock at both ends when the clip is closed. One leg is configured as an open oval with sharp return bends on either end. The second leg is configured to conform to the interior of said oval. The clip is applied to blood vessels or the like with a conventional, forceps-type instrument.

Подробнее
04-11-2004 дата публикации

A SEEDED TEAR RESISTANT SCAFFOLD

Номер: CA0002522581A1
Автор: GIANNETTI BRUNO
Принадлежит:

Подробнее
19-02-2004 дата публикации

ACTIVE AGENT DELIVERY SYSTEM INCLUDING A POLY(ETHYLENE-CO-(METH)ACRYLATE), MEDICAL DEVICE, AND METHOD

Номер: CA0002494186A1
Принадлежит:

The present invention provides active agent delivery systems for use in medical devices, wherein the active agent delivery systems include an active agent and a miscible polymer blend that includes a polyethylene-co- (meth)acrylate) and a second polymer not including polyethylene vinyl acetate).

Подробнее
23-06-1987 дата публикации

ANTIMICROBIAL FABRIC FOR SURGICAL DRAPES

Номер: CA0001223208A1
Автор: BROWN CRAIG C
Принадлежит:

Подробнее
20-07-2017 дата публикации

SYRINGE PLUNGER ASSEMBLIES

Номер: CA0003058042A1
Принадлежит: GOWLING WLG (CANADA) LLP

Подробнее
09-11-2021 дата публикации

SYRINGE PLUNGER ASSEMBLIES

Номер: CA3058042C
Принадлежит: GORE & ASS, W. L. GORE & ASSOCIATES, INC.

A syringe for storing and delivering a fluid that includes (1) a stopper and (2) a plunger rod assembly is provided. The plunger rod assembly includes a plunger rod and a threaded member at a plunger-engaging end. The stopper may be formed of an elastomeric material. The stopper has an exterior surface and an inner cavity. The inner cavity of the stopper may have a generally frustoconical shape with at least one engagement surface. The threaded member contacts at least one engagement surface in the inner cavity of the stopper to support the plunger rod assembly in an integrated, non-threaded engagement with the stopper. In some embodiments, the threaded member is freely rotatable within the inner cavity.

Подробнее
27-12-2018 дата публикации

DEVICE AND METHOD FOR ATRAUMATIC AND PERCUTANEOUS FORMATION OF AN ARTERIOVENOUS FISTULA

Номер: CA0003068000A1
Принадлежит: GOWLING WLG (CANADA) LLP

Provided herein are novel devices for the formation of arteriovenous fistulas, which may aid subjects in need of hemodialysis. The novel devices are provided in a non-surgical procedure, greatly decreasing the cost and increasing the convenience of placing an arteriovenous fistula. The devices are atraumatic, and consist of a sutureless anastomosis device and conduit. Methods and tools for placing the devices in vivo are disclosed, including a magnetic-assisted method.

Подробнее
30-11-2017 дата публикации

MATERIALS ARCHITECTURE FOR GASTRIC RESIDENCE SYSTEMS

Номер: CA0003025650A1
Принадлежит: BORDEN LADNER GERVAIS LLP

The invention provides gastric residence systems with specifically tailored architectures and methods for making such systems. The components of the gastric residence systems can be manufactured by three-dimensional printing or by co-extrusion. The ability to construct precise architectures for the systems provides excellent control over drug release, in vivo stability, and residence time of the systems.

Подробнее
21-03-2002 дата публикации

BRONCHIAL OCCLUSION METHOD AND APPARATUS

Номер: CA0002421638A1
Принадлежит:

Achieving lung volume reduction includes occluding a lumen of a bronchial tube of a lung to prevent air flow to at least a region of the lung. Bronchial occluders such as polymerizable materials and mechanical devices, such as sutures, staples, clips, clamps, foam, balloons, umbrellas and ball bearings are provided for occluding a bronchial tube. Methods include mixing thickeners or foaming agents with polymerizable compositions and introducing the mixture into a lumen of a bronchial tube. Mechanisms for mixing components and delivering the mixture to a lumen of a bronchial tube are also provided.

Подробнее
06-08-1985 дата публикации

SURGICAL FASTENER AND MEANS FOR APPLYING SAME

Номер: CA0001191416A1
Автор: GREEN DAVID T
Принадлежит:

Подробнее
13-09-2011 дата публикации

A SUBSTRATE HAVING AN ELECTRON DONATING SURFACE WITH METAL PARTICLES COMPRISING PALLADIUM ON SAID SURFACE

Номер: CA0002647606C
Принадлежит: BACTIGUARD AB

There is disclosed a substrate with an electron donating surface, characterized in having metal particles on said surface, said metal particles comprising palladium and at least one metal selected from the group consisting of gold, ruthenium, rhodium, osmium, iridium, and platinum, wherein the amount of said metal particles is from about 0.001 to about 8µg/cm2. Examples of coated objects include contact lenses, pacemakers, pacemaker electrodes, stents, dental implants, rupture nets, rupture mesh, blood centrifuge equipment, surgical instruments, gloves, blood bags, artificial heart valves, central venous catheters, peripheral venous catheters, vascular ports, haemodialysis equipment, peritoneal dialysis equipment, plasmapheresis devices, inhalation drug delivery devices, vascular grafts, arterial grafts, cardiac assist devices, wound dressings, intermittent catheters, ECG electrodes, peripheral stents, bone replacing implants, orthopaedic implants, orthopaedic devices, tissue replacing ...

Подробнее
09-10-2014 дата публикации

SINGLE PLANE TISSUE REPAIR PATCH

Номер: CA0002903904A1
Принадлежит:

A novel single plane tissue repair device such as a patch is disclosed. The device has a base member with an opening therethrough, and a closure member associated with the opening. The mesh has a biaborbable polymeric adhesion barrier attached to the bottom side of the base member about its periphery to form a pocket that is accessible through the opening. The mesh may be used in open surgical procedures for hernia repairs and other repairs of body wall defects.

Подробнее
21-01-2016 дата публикации

GELS HAVING PERMANENT TACK FREE COATINGS AND METHOD OF MANUFACTURE

Номер: CA0002952640A1
Принадлежит:

The present invention is directed to tack-free gels and to methods for manufacturing a tack-free gel pad, in which a discontinuous layer of fluorinated ultrahigh molecular weight polyethylene is permanently bonded to the gel pad to provide a tack-free coating. The gel pad may be incorporated into a gel cap to provide a surgical access device having a tack-free surface.

Подробнее
17-11-2016 дата публикации

POLYMER FILM, AND DISPERSION LIQUID AND AGGLOMERATE USING SAME

Номер: CA0002983812A1
Принадлежит: SMART & BIGGAR

Provided are: a polymer film characterized in that the average film thickness T0 along a straight line D passing through the center of gravity of a two-dimensional maximum-area projection satisfies equation (a), the average value L of distances 1 from the center of gravity to edges satisfies equation (b), the Young's modulus E satisfies equation (c), and the thickness deviation ? defined by equation (d) satisfies equation (e); and a liquid dispersion and an agglomerate using the same. (a) 10 nm ? T0 ? 1000 nm, (b)0.1 µm ? L ? 500 µm, (c) 0.01 GPa ? E ? 4.3 GPa, (d) ?=1-T1/T2, (e) 0.346E×10-9-1.499 < ? < -0.073E×10-9+0.316. According to the present invention, a polymer film which is easy to handle and has excellent compatibility, coatability, adhesiveness, and adhesion with respect to organ tissues; and a liquid dispersion and an agglomerate using the same can be provided.

Подробнее
20-10-2016 дата публикации

HOT MELT ADHESIVES AND USES THEREOF

Номер: CA0002982756A1

The disclosure relates to adhesive compositions comprising a semi-crystalline olefin polymer or copolymer and a functional wax, functional olefin polymer, or mixture thereof. These compositions are useful as, for example, adhesives in disposable articles such as diapers, adult incontinence articles, underpads, personal care garments, and the like.

Подробнее
16-08-2016 дата публикации

HYDROGEL FILAMENTS FOR BIOMEDICAL USES

Номер: CA0002709379C
Принадлежит: MICROVENTION, INC., MICROVENTION INC

Described herein are apparatus, compositions, systems and associated methods to occlude structures and malformations with radiopaque hydrogel filaments with delayed controlled rates of expansion permitting the repositioning of the device once inside the structure or malformation. Further described is a device for implantation in an animal comprising a difunctional, low molecular weight ethylenically unsaturated shapeable macromer; an ethylenically unsaturated monomer; and a radiopaque element, wherein said device contains no support members. Methods of forming such devices are also disclosed.

Подробнее
07-06-2016 дата публикации

EXPANDABLE TFE COPOLYMERS, METHOD OF MAKING, AND POROUS, EXPANDED ARTICLES THEREOF

Номер: CA0002754020C

A true tetrafluoroethylene (TFE) copolymer of the fine powder type is provided, wherein the copolymer contains polymerized comonomer units of at least one comonomer other than TFE in concentrations of at least or exceeding 1.0 weight percent, and which can exceed 5.0 weight percent, wherein the copolymer is expandable, that is, the copolymer may be expanded to produce strong, useful, expanded TFE copolymeric articles having a microstructure of nodes interconnected by fibrils. Articles made from the expandable copolymer may include tapes, membranes, films, fibers, and are suitable in a variety of end applications, including medical devices.

Подробнее
29-03-2012 дата публикации

EXPANDABLE FUNCTIONAL TFE COPOLYMER FINE POWDER, THE EXPANDED FUNCTIONAL PRODUCTS OBTAINED THEREFROM AND REACTION OF THE EXPANDED PRODUCTS

Номер: CA0002811770A1
Принадлежит:

A functional TFE copolymer fine powder is described, wherein the TFE copolymer is a polymer of TFE and at least one functional comonomer, and wherein the TFE copolymer has functional groups that are pendant to the polymer chain. The functional TFE copolymer fine powder resin is paste extrudable and expandable. Methods for making the functional TFE copolymer are also described. The expanded functional TFE copolymer material may be post-reacted after expansion.

Подробнее
14-04-2020 дата публикации

RECYCLED RESIN COMPOSITIONS AND DISPOSABLE MEDICAL DEVICES MADE THEREFROM

Номер: CA0002854298C

Syringe plunger rods comprising an elongate body formed from a composition comprising one or more of virgin material, a sterilization-stable recycled resin and a biobased compositions are described. Plunger rods comprising a plurality of ribs, some of which may have a plurality of openings, are also described. The plunger rods requiring less material while maintaining sufficient structural integrity to function properly.

Подробнее
16-05-2017 дата публикации

VAPOR HYDRATED MEDICAL DEVICE WITH LOW SURFACE ENERGY SLEEVE

Номер: CA0002888231C
Принадлежит: HOLLISTER INCORPORATED, HOLLISTER INC

A medical device such as a catheter in a liquid and vapor impermeable package, the device being contained in a low surface energy sleeve or compartment that is liquid impermeable and vapor permeable. Water vapor molecules from a liquid provided within the package exteriorly of the sleeve or compartment migrate across the sleeve or compartment to an interior thereof, thereby creating and maintaining a moist environment for the device, which may include activating a hydrophilic coating of the catheter. Water molecules are transported through the sleeve from an exterior of the sleeve or compartment to the interior of the sleeve compartment. Upon removal of the device from the package, the exterior of the sleeve or compartment is drier to the touch.

Подробнее
22-03-2012 дата публикации

Reduced profile medical balloon element

Номер: US20120070599A1
Автор: Alan M. Zamore
Принадлежит: Individual

Medical dilatation balloons comprise a polymer that has the attribute of memory, and/or is crosslinked to impart memory. Such balloons exhibit a reduced tendency to overinflate at high inflation pressures. Furthermore, such balloons when shrunk radially by the application of heat while restraining axial shrinkage, exhibit customizable linear or non-linear compliance curves and lower crosslinking profile relative to the same balloon when unshrunk. Also disclosed is an expansive element within a tube whose outer diameter is equal to the outer diameter of the tube from which it was made. In addition, disclosed are (a) processes for preparing crosslinkable polymers, (b) joining crosslinked balloons to catheter systems, (c) forming shrunk balloon elements, and (d) forming an expansive element within a tube whose outer diameter is equal to the outer diameter of the tube from which it was made.

Подробнее
29-03-2012 дата публикации

Hydrophilic polyproylene melt additives

Номер: US20120077886A1
Принадлежит: 3M Innovative Properties Co

Melt additive ionic and non-ionic surfactants to impart stable durable hydrophilicity to thermoplastic polymers or blends thereof.

Подробнее
05-07-2012 дата публикации

STENT GRAFT WITH TWO LAYER ePTFE LAYER SYSTEM WITH HIGH PLASTICITY AND HIGH RIGIDITY

Номер: US20120172977A1
Принадлежит: Abbott Cardiovascular Systems Inc

A vascular prosthesis and method are disclosed comprising a first flexible stent having a lattice structure with a compacted configuration and an expanded configuration, a second flexible stent inside the first flexible stent to form a tubular structure, a first film layer of graft material such as expanded polytetrafluoroethylene sandwiched between the first and second flexible stents, and a second film layer of expanded polytetrafluoroethylene sandwiched between the first and second flexible stents, the second layer having a higher rigidity and a lower plasticity than the first layer.

Подробнее
12-07-2012 дата публикации

Structural hydrogel polymer device

Номер: US20120178874A1
Автор: Scott M. Epstein
Принадлежит: Individual

The present invention relates generally a manufacturing process which results in a completely hydrogel polymer device that maintains lumen patency which allows for numerous applications. Catheters and stents are particular examples, and their composition, mechanical characteristics, and the significantly unique ability to conduct and allow fluids to pass from one end to the other without physiological rejection, inflammation, or manifestation of complications due to implant or otherwise undesirable outcomes when used for ambulatory and or therapeutic interventions is the purpose of the invention.

Подробнее
19-07-2012 дата публикации

Polymer coating comprising 2- methoxyethyl acrylate units synthesized by surface-initiated atom transfer radical polymerization

Номер: US20120184029A1
Принадлежит: Danmarks Tekniskie Universitet

The present invention relates to preparation of a polymer coating comprising or consisting of polymer chains comprising or consisting of units of 2-methoxyethyl acrylate synthesized by Surface-Initiated Atom Transfer Radical Polymerization (SI ATRP) such as ARGET SI ATRP or AGET SI ATRP and uses of said polymer coating.

Подробнее
01-11-2012 дата публикации

Soluble coating comprising polyelectrolyte with hydrophobic counterions

Номер: US20120276185A1
Принадлежит: Individual

The present invention provides an implantable device having a biosoluble coating comprising a polyelectrolyte and a counterion and the methods of making and using the same.

Подробнее
08-11-2012 дата публикации

Helical hybrid stent

Номер: US20120283817A1
Автор: Jacob Richter
Принадлежит: Medinol Ltd

An expandable helical stent is provided, wherein the stent may be formed of an amorphous metal alloy or other non-amorphous metal with a securement. The stent is formed from flat or tubular metal in a helical coiled structure which has an undulating pattern. The main stent component may be formed of a single helically coiled component. Alternatively, a plurality of helically coiled ribbons may be used to form a stent heterogeneous in design, material, or other characteristic particular to that stent. The helical tubular structure may be secured with a securement, such as a weld, interlock or a polymer, to maintain the helical coils in a tubular configuration. The helical coils of the main stent component may be spaced apart or nestled to each other to maintain the tubular shape of the helically coiled stent and prevent the polymer layer from sagging at any point between cycles of the coils.

Подробнее
02-05-2013 дата публикации

Surface Treated Polymeric Synthetic Hernia Mesh Prosthesis, Surface Treated Sutures and Staples and Methods of Manufacturing the Same

Номер: US20130110137A1
Принадлежит: Ension Inc

A variety of polymeric synthetic hernia mesh prosthesis with surface treatment on at least one tissue-facing surface to control tissue adhesion are disclosed including heparin surface treatment which provides heparin present in an amount to yield heparin bioactivity of at least one of i) an ATIII binding of at least 2 pmol/cm 2 , and ii) a thrombin deactivation of at least 0.2 IU/cm 2 ; an acrylic surface treatment for coupling thereto of a heparin surface treatment, a collagen surface treatment or both; and an amino-functional polysiloxane surface treatment for coupling thereto of a heparin surface treatment. The synthetic hernia mesh may be formed of monofilament or multifilament polypropylene or polyester, and may be formed as a multi-layer prosthesis with an outer layer formed of a polymeric synthetic hernia mesh with surface treatment to control tissue adhesion coupled to one or more polymeric synthetic hernia meshes without such surface treatments.

Подробнее
23-05-2013 дата публикации

Medical devices having improved performance

Номер: US20130129793A1
Принадлежит: Boston Scientific Scimed Inc

In accordance with various aspects of the invention, implantable and insertable medical devices are provided, which contain one or more polymeric regions. In one aspect, the polymeric regions comprise (a) a block copolymer that comprises a polyaromatic block and a polyalkene block admixed with (b) a sulfonated high Tg polymer. In another aspect, the polymeric regions comprise a block copolymer that comprises (a) a sulfonated polymer block and (b) fluorinated polymer block.

Подробнее
04-07-2013 дата публикации

Stimuli Responsive Nanofibers

Номер: US20130171331A1
Принадлежит: Individual

A stimuli responsive nanofiber that includes a stimuli responsive polymer, such as a thermally responsive polymer, and a cross-linking agent having at least two latent reactive activatable groups. The nanofiber may also include a biologically active material or a functional polymer. The stimuli responsive nanofiber can be used to modify the surface of a substrate. When the nanofiber includes a thermally responsive polymer, the physical properties of the surface can be controlled by controlling the temperature of the system, thus controlling the ability of the surface to bind to a biologically active material of interest.

Подробнее
04-07-2013 дата публикации

Implantable product with improved aqueous interface characteristics and methods for making and using the same

Номер: US20130172980A1
Принадлежит: WL Gore and Associates Inc

An implantable medical device including a porous membrane that is treated with a hydrophilic substance to obtain rapid optimum visualization using technology for viewing inside of a mammalian body. These technologies include ultrasound echocardiography and video imaging such as that used during laparoscopic procedures.

Подробнее
18-07-2013 дата публикации

Articles Including Expanded Polytetrafluoroethylene Membranes with Serpentine Fibrils and Having a Discontinuous Fluoropolymer Layer Thereon

Номер: US20130184807A1
Принадлежит: WL Gore and Associates Inc

Articles comprising an expanded polytetrafluoroethylene membrane having serpentine fibrils and having a discontinuous coating of a fluoropolymer thereon are provided. The fluoropolymer may be located at least partially in the pores of the expanded fluoropolymer membrane. In exemplary embodiments, the fluoropolymer is fluorinated ethylene propylene. The application of a tensile force at least partially straightens the serpentine fibrils, thereby elongating the article. The expanded polytetrafluoroethylene membrane may include a microstructure of substantially only fibrils. The articles can be elongated to a predetermined point at which further elongation is inhibited by a dramatic increase in stiffness. In one embodiment, the articles are used to form a covered stent device that requires little force to distend in the radial direction to a first diameter but is highly resistant to further distension to a second diameter (stop point). A large increase in diameter can advantageously be achieved prior to reaching the stop point.

Подробнее
15-08-2013 дата публикации

Adhesive structure with stiff protrusions on adhesive surface

Номер: US20130206330A1

A laminate and process of making the laminate is disclosed comprising: a surgical mesh having first and second surfaces; and an adhesive structure having adhesive and non-adhesive surfaces, wherein the non-adhesive surface of the adhesive structure is laminated to at least one of said first and second surfaces of said surgical mesh, and the adhesive surface of said adhesive structure has protrusions extending therefrom comprising a resin having a Young's modulus of greater than 17 MPa, which protrusions are of sufficiently low diameter to promote adhesion by increasing physical attractive forces between the adhesive structure and a target surface, as measured by shear adhesion.

Подробнее
15-08-2013 дата публикации

Ultrasound Coupling Liquid and Container

Номер: US20130211250A1
Принадлежит: Theraclion SA

This invention relates to a coupling liquid for ultrasound devices, preferably high intensity focused ultrasound (HIFU). The coupling liquid comprises a liquid aqueous solution of at least one hydrophilic polymer having an average molecular mass of between 30,000 and 70,000 and at least one alcohol with a carbon chain of 1 to 7 carbon atoms. Also disclosed is a container ( 10 ) for an ultrasound coupling liquid having a thin wall.

Подробнее
05-09-2013 дата публикации

Biocompatible surfaces and devices incorporating such surfaces

Номер: US20130231733A1
Принадлежит: WL Gore and Associates Inc

The invention is an improved biocompatible surface for a variety of medical purposes. The biocompatible surface employs a unique tight microstructure that demonstrates enhanced cellular response in the body, particularly when placed in contact with blood. As a blood contact surface, the present invention can be beneficially employed in a wide variety of implantable devices and in many other devices and equipment that come in contact with blood.

Подробнее
19-09-2013 дата публикации

Progesterone-containing compositions and devices

Номер: US20130245570A1
Автор: Gregg A. Jackson
Принадлежит: Individual

Progesterone-containing compositions and devices that can maintain opening of a body passageway are described. One aspect of the invention provides a therapeutically effective (e.g., relaxative, anti-oxidative, anti-restenotic, anti-angiogenic, anti-neoplastic, anti-cancerous, anti-precancerous and/or anti-thrombotic) composition or formulation containing progesterone and optionally vitamin E and/or conjugated linoleic acid. Another aspect of the invention provides a drug eluting device, such as a drug eluting stent, with at least one coating layer comprising a progesterone composition that can minimize or eliminate inflammation, thrombosis, restenosis, neo-intimal hyperplasia, rupturing of vulnerable plaque, and/or other effects related to device implantation, treatment, or interaction. Other aspects of the invention provide for methods of using such compositions, formulations, and devices.

Подробнее
12-12-2013 дата публикации

Polymers Of Fluorinated Monomers And Hydrocarbon Monomers

Номер: US20130330392A1
Автор: Pacetti Stephen D.
Принадлежит: Abbott Cardiovascular Systems Inc.

It is provided an implantable device including a polymer blend that contains a polymer formed of fluorinated monomers and hydrocarbon monomers and another biocompatible polymer. 1. An implantable device comprising a polymer blend comprising a first biocompatible polymer and at least one other biocompatible polymer , wherein the first biocompatible polymer comprises fluorinated monomers and hydrocarbon monomers ,{'sub': 2', '2', '2, 'wherein the hydrocarbon monomers are CHR═CHor CR═CHin which R is selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, short chain alkyl groups, phenyl, substituted phenyl, cyclic alkyl, heterocyclic alkyl, and heteroaryl,'}{'sub': 2', '2', '2', '3', '3', '2', '3', '2', '2', '2, 'wherein the fluorinated monomers are selected from the group consisting of —CH—CHF—, —CHF—CHF—, —CClF—CF—, —CF—C(CF)F—, —CHF—C(CF)F—, —CF—C(CF) H—, —CF—CR′F—, —CHF—CR′F—, —CF—CR′H—, —CH—CR′F—, and —CFH—CR′H— where R′ is independently selected from the group consisting of Cl, Br, I, methyl, ethyl, n-propyl, iosopropyl, short chain alkyl groups, phenyl, substituted phenyl, cyclic alkyl, heterocyclic, heteroaryl, fluorinated short chain alkyl groups, fluorinated phenyl, fluorinated cyclic alkyl, fluorinated heterocyclic, and combinations thereof,'}wherein the fluorinated monomers form about 25.01 mole % to about 99.99 mole % repeating units of the polymer, andwherein the hydrocarbon monomers form about 74.99 mole % to about 0.01 mole % repeating units of the polymer.2. The implantable device of claim 1 , wherein the fluorinated monomers form about 50.01 mole % to about 94.99 mole % units of the polymer claim 1 , andwherein the hydrocarbon monomers form about 49.99 mole % to about 5.01 mole % repeating units of the polymer.3. (canceled)4. The implantable device of claim 1 , wherein the other biocompatible polymer is selected from the group consisting of poly(ester amide) claim 1 , polyesters claim 1 , polyhydroxyalkanoates (PHA) claim 1 , poly(3- ...

Подробнее
12-12-2013 дата публикации

Polymers Of Fluorinated Monomers And Hydrocarbon Monomers

Номер: US20130330393A1
Автор: Pacetti Stephen D.
Принадлежит: Abbott Cardiovascular Systems Inc.

It is provided a method of treating a disorder, the method comprising implanting in a patient an implantable device including a polymer formed of fluorinated monomers and hydrocarbon monomers and another biocompatible polymer. 1. A method of treating a disorder in a patient comprising implanting in the patient an implantable device ,wherein the disorder selected from the group consisting of atherosclerosis, thrombosis, restenosis, hemorrhage, vascular dissection or perforation, vascular aneurysm, vulnerable plaque, chronic total occlusion, claudication, anastomotic proliferation for vein and artificial grafts, bile duct obstruction, ureter obstruction, tumor obstruction, and combinations thereof, and [{'sub': 2', '2', '2, 'the hydrocarbon monomers are CHR═CHor CR═CHin which R is selected from the group consisting of methyl, ethyl, n-propyl, isopropyl, short chain alkyl groups, phenyl, substituted phenyl, cyclic alkyl, heterocyclic alkyl, and heteroaryl,'}, {'sub': 2', '2', '2', '3', '3', '2', '3', '2', '2', '2, 'the fluorinated monomers are selected from the group consisting of —CH—CHF—, —CHF—CHF—, —CClF—CF—, —CF—C(CF)F—, —CHF—C(CF)F—, —CF—C(CF)H—, —CF—CR′H—, —CF—CR′F—, —CHF—CR′F—, —CH—CR′F—, and —CFH—CR′H— where R′ is independently selected from the group consisting of Cl, Br, I, methyl, ethyl, n-propyl, iosopropyl, short chain alkyl groups, phenyl, substituted phenyl, cyclic alkyl, heterocyclic, heteroaryl, fluorinated short chain alkyl groups, fluorinated phenyl, fluorinated cyclic alkyl, fluorinated heterocyclic, and combinations thereof,'}, 'the fluorinated monomers form about 25.01 mole % to about 99.99 mole % repeating units of the polymer, and', 'the hydrocarbon monomers form about 74.99 mole % to about 0.01 mole % repeating units of the polymer., 'wherein the implantable device includes a coating thereon, the biocompatible coating comprising a biocompatible polymer comprising fluorinated monomers and hydrocarbon monomers wherein'}2. The method of claim 1 , ...

Подробнее
26-12-2013 дата публикации

Endovascular Closure Device

Номер: US20130345738A1
Автор: Joe Michael Eskridge
Принадлежит: Joe Michael Eskridge

An aneurysm closure device that includes a retention assembly, adapted to retain the closure device in place on an aneurysm neck. Also, a seal has a wire frame, defining a set of eyeholes and thread, threaded through the set of eyeholes, to form a lattice. Finally, an expanse of silicone, is cured onto the thread, to form a barrier.

Подробнее
16-01-2014 дата публикации

Expandable Functional TFE Copolymer Fine Powder, Expanded Products and Reacted Products Therefrom

Номер: US20140018457A1
Принадлежит: W. L. Gore & Associates, Inc.

A functional TFE copolymer fine powder is described, wherein the TFE copolymer is a polymer of TFE and at least one functional comonomer, and wherein the TFE copolymer has functional groups that are pendant to the polymer chain. The functional TFE copolymer fine powder resin is paste extrudable and expandable. Methods for making the functional TFE copolymer are also described. The expanded functional TFE copolymer material may be post-reacted after expansion. 150-. (canceled)51. A medical device comprising an expanded polymeric material comprising a functional TFE copolymer material having a microstructure characterized by nodes interconnected by fibrils wherein the TFE copolymer comprises a polymer chain of TFE and at least one comonomer having a functional group that is pendant to the polymer chain.52. The medical device of wherein the expanded polymeric material further comprises at least one bioactive species immobilized thereto.53. The medical device of further comprising a spacer arm.54. A medical device comprising an expanded functional TFE copolymer material characterized by nodes interconnected by fibrils comprising a copolymer of TFE and at least one comonomer having an amine functional group that is pendant to the polymer chain claim 52 , and a polysaccharide immobilized thereto.5567-. (canceled) The present application is a divisional application of U.S. patent application Ser. No. 12/886,817 filed Sep. 21, 2010 which is a continuation-in-part application of pending U.S. patent application Ser. No. 12/410,050 filed Mar. 24, 2009.Expandable TFE copolymer fine powder resins containing functional monomers, expanded functional products obtained from these copolymers, and processes for making them are described herein. Further described are post-expansion reactions of the expanded functional TFE copolymer materials, and products made therefrom.Polytetrafluoroethylene or PTFE is known to have a unique combination of properties including excellent chemical ...

Подробнее
23-01-2014 дата публикации

POLYMER ARTICLES HAVING CHEMICALLY BONDED AGENTS AND METHODS OF MAKING THE SAME

Номер: US20140024736A1
Принадлежит: Zimmer, Inc.

Modified polymeric articles having modifying agents dispersed within and bonded to an interior region of the article. Methods of modifying polymer materials used to form polymeric articles, and methods of making polymeric articles from polymer particles having modifying agents bonded thereto. 1. An implantable medical device comprising:a polymeric article having an outer surface and an interior region, the article comprising polymer molecules with at least one modifying agent bonded thereto, and wherein the polymer molecules are distributed within at least a portion of the interior region.2. The implantable medical device of wherein the at least one modifying agent is bonded directly to the polymer molecules.3. (canceled)4. The implantable medical device of wherein the polymer molecules include a reactive group and the at least one modifying agent is bonded to the reactive group.5. (canceled)6. The implantable medical device of wherein the polymer molecules comprise at least one of ultra high molecular weight polyethylene claim 1 , polypropylene or polyethylene polypropylene copolymer.7. The implantable medical device of wherein the polymer article comprises from 0.1 to 10 mole percent of polymer molecules having the at least one modifying agent bonded thereto.8. The implantable medical device of wherein the at least one modifying agent is an antioxidant.9. The implantable medical device of wherein the antioxidant is tocopherol.10. The implantable medical device of wherein the at least one modifying agent is a biological modifying agent.11. The implantable medical device of wherein the biological modifying agent is selected from the group consisting of antimicrobials claim 10 , antibiotics claim 10 , anti-inflammatories claim 10 , and combinations thereof.12. (canceled)13. The implantable medical device of wherein the at least one modifying agent is a thermally activated crosslinking group for chemically bonding to another thermally activated crosslinking group to ...

Подробнее
23-01-2014 дата публикации

Ophthalmic And Otorhinolaryngological Device Materials Containing An Alkylphenol Ethoxylate

Номер: US20140024777A1
Принадлежит:

Disclosed are soft, high refractive index, acrylic device materials. The materials contain a functionalized alkylphenol ethoxylate to reduce glistenings. 2. The polymeric device material of wherein{'sub': 2', 'n, 'B=O(CH);'}{'sup': '1', 'sub': '3', 'R=H or CH;'}n=1-4; and{'sub': 6', '5, 'A=CH.'}3. The polymeric device material of wherein{'sup': 2', '3, 'sub': '3', 'R, Rindependently=H or CH;'}{'sub': 2', 'd', '2', 'd', '6', '4, 'W, W′ independently=O(CH), O(CH)CH, or nothing;'}{'sub': 2', '2', 'b, 'J=O(CHCHO)or nothing, provided that if W and W′=nothing, then J≠nothing;'}d=0-6; andb=1-10.6. The polymeric device material of wherein the monomer of formula [1] is selected from the group consisting of benzyl methacrylate; 2-phenylethyl methacrylate; 3-phenylpropyl methacrylate; 4-phenylbutyl methacrylate; 5-phenylpentyl methacrylate; 2-phenoxyethyl methacrylate; 2-(2-phenoxyethoxy)ethyl methacrylate; 2-benzyloxyethyl methacrylate; 2-(2-(benzyloxy)ethoxy)ethyl methacrylate; 3-benzyloxypropyl methacrylate; benzyl acrylate; 2-phenylethyl acrylate; 3-phenylpropyl acrylate; 4-phenylbutyl acrylate; 5-phenylpentyl acrylate; 2-phenoxyethyl acrylate; 2-(2-phenoxyethoxy)ethyl acrylate; 2-benzyloxyethyl acrylate; 2-(2-(benzyloxy)ethoxy)ethyl acrylate; and 3-benzyloxypropyl acrylate.7. The polymeric device material of wherein the monomer of formula [2] is selected from the group consisting of ethylene glycol dimethacrylate; diethylene glycol dimethacrylate; triethylene glycol dimethacrylate; 1 claim 1 ,6-hexanediol dimethacrylate; 1 claim 1 ,4-butanediol dimethacrylate; 1 claim 1 ,4-benzenedimethanol dimethacrylate; ethylene glycol diacrylate; diethylene glycol diacrylate; triethylene glycol diacrylate; 1 claim 1 ,6-hexanediol diacrylate; 1 claim 1 ,4-butanediol diacrylate; and 1 claim 1 ,4-benzenedimethanol diacrylate.8. The polymeric device material of wherein the amount of monomer [1] is 80 to 95% (w/w).9. The polymeric device material of wherein the amount of monomer [2] is 0.5 ...

Подробнее
06-02-2014 дата публикации

Methods for Manufacturing Delivery Systems and Systems Thereof

Номер: US20140037707A1
Принадлежит: Evonik Corp

Described herein are methods for reducing and achieving the desired release of an agent from a delivery system. The desired release kinetics are achieved by exposing the surface of the delivery system with a fluid for a desired period of time.

Подробнее
06-03-2014 дата публикации

Hppe member and method of making a hppe member

Номер: US20140065419A1
Принадлежит: DSM IP ASSETS BV

The invention concerns a high performance polyethylene (HPPE) member comprising at least 5 wt-% of a radiopaque component, the HPPE member is biocompatible and the radiopaque component is a particulate at least partially arranged inside a HPPE filament of the HPPE member. Furthermore, the radiopaque component has a particle size of at most 1 μm, preferably the radiopaque component has a particle size if at most 0.5 μm. The invention also concerns a method of making the HPPE member and various medical devices and repair products comprising the HPPE member.

Подробнее
20-03-2014 дата публикации

ELECTROSPUN MATERIAL COVERED MEDICAL APPLIANCES AND METHODS OF MANUFACTURE

Номер: US20140079758A1
Принадлежит: Merit Medical Systems, Inc.

A medical appliance or prosthesis may comprise one or more layers of electrospun nanofibers, including electrospun polymers. The electrospun material may comprise layers including layers of polytetrafluoroethylene (PTFE). Electrospun nanofiber mats of certain porosities may permit tissue ingrowth into or attachment to the prosthesis. 1. A method for promoting endothelial cell growth on an implantable medical appliance , comprising implanting the medical appliance into a patient , the medical appliance coated with at least one electrospun polymer layer having a percent porosity of between about 35% and about 70% , such that endothelial cells grow on or attach to the surface of the at least one electrospun polymer layer.2. The method of claim 1 , wherein the implantable medical appliance comprises a stent.3. The method of claim 1 , wherein the implantable medical appliance comprises a graft.4. The method of claim 1 , wherein the at least one electrospun polymer layer comprises an electrospun PTFE layer.5. The method of claim 4 , wherein the medical appliance is coated with a second polymer layer that inhibits tissue or fluid migration into or through the second polymer layer.6. The method of claim 5 , wherein the second polymer layer comprises an FEP layer.7. The method of claim 4 , wherein the electrospun PTFE comprises a fiber mat of randomized PTFE microfibers or nanofibers.8. The method of claim 1 , wherein the at least one polymer layer of the implanted medical appliance is configured to permit at least 150% in vitro endothelial cell attachment claim 1 , compared to an expanded PTFE control material.9. The method of claim 1 , wherein the at least one polymer layer of the implanted medical appliance is configured to permit between 30% and 170% in vitro endothelial cell attachment claim 1 , compared to an expanded PTFE control material.10. The method of claim 1 , wherein the percent porosity of the electrospun polymer layer is between about 40% and about 60%.11. ...

Подробнее
03-04-2014 дата публикации

OUTER LAYER HAVING ENTANGLEMENT OF HYDROPHOBIC POLYMER HOST BLENDED WITH A MALEATED HYDROPHOBIC POLYMER CO-HOST, AND HYDROPHILIC POLYMER GUEST

Номер: US20140094568A1

The present disclosure provides, inter alia, a method of producing an outer layer material for forming into a structure and that comprises an entanglement having a hydrophobic polymer host and a hydrophilic guest, including in one embodiment the steps of: intermingling cloaked hydrophilic guest complexes with the hydrophobic host; crosslinking molecules of the guest with the guest; and performing a hydrolysis reaction. 16-. (canceled)7. A method of producing a material for forming into a structure , comprising: an outer layer of the material comprising an entanglement comprising a hydrophobic polymer host and a hydrophilic guest , wherein said guest comprises a compound selected from the group consisting of polyions , polysaccharides , salts of glycosaminoglycans , nucleic acids , polyvinylpyrrolidones , peptides , polypeptides , proteins , lipoproteins , polyamides , polyamines , polyhydroxy polymers , polycarboxy polymers , phosphorylated derivatives of carbohydrates , sulfonated derivatives of carbohydrates , interleukin-2 , interferon , and phosphorothioate oligomers; wherein a synthesis of said entanglement , resulting in a generally hydrophilic outer surface of said layer comprising hydrophilic functional groups , comprises the steps of: (a) intermingling cloaked hydrophilic guest complexes with said hydrophobic host; (b) crosslinking molecules of said guest with said guest; and (c) performing a hydrolysis reaction.8. The method of further comprising claim 7 , prior to said step of intermingling said cloaked hydrophilic guest complexes with said host claim 7 , the steps of: first claim 7 , producing said complexes of said guest represented according to the expression HA-QN claim 7 , where HA represents the polysaccharide claim 7 , hyaluronic acid claim 7 , and QN represents a paraffin ammonium cation claim 7 , and cloaking hydrophilic groups of said guest complexes to produce said cloaked hydrophilic guest complexes claim 7 , by performing a silylation using a ...

Подробнее
10-04-2014 дата публикации

Methods for Making an Encapsulated Stent

Номер: US20140096906A1
Принадлежит: Bard Peripheral Vascular Inc

A method for making an encapsulated stent includes providing first and second ePTFE layers and a stent positioned therebetween. The first ePTFE layer may be unsintered and have a node-fibril microstructure in which the fibrils are oriented perpendicular to the longitudinal axis. The second ePTFE layer may be unsintered and have a node-fibril microstructure in which the fibrils are oriented parallel to the longitudinal axis. The method includes joining the first ePTFE layer to the second ePTFE layer through openings in a wall of the stent.

Подробнее
02-01-2020 дата публикации

Glide-on coating for polymeric gloves

Номер: US20200000159A1
Принадлежит: Medline Industries LP

Polymeric gloves include a donning-facilitating coating. The donning-facilitating coating facilitates a hand of a user to glide into and out of the glove while either leaving a visible residue on the hand of the user, or not leaving a visible residue on the hand of the user, when the donning-facilitating coating is contacted by the hand of the user.

Подробнее
01-01-2015 дата публикации

METHOD FOR MANUFACTURING A POLYMER SHEET FOR USE AS AN IMMOBILIZATION ELEMENT

Номер: US20150000679A1
Принадлежит: ORFIT INDUSTRIES

The present invention relates to a method for manufacturing a polymer sheet for use as an immobilization element, wherein the sheet is at least partly made of a polymer material comprising a polymer from the group of polycaprolactone, a copolymer of polyethylene with at least one α-olefin having 3-10 C atoms, or a mixture of two or more of the aforementioned polymers, a photo-initiator, and a photo-cross-linker, wherein the polymer sheet has a thickness of 1.0 to 5 mm and wherein the polymer sheet is at least partially cured by exposing to UV radiation for the at least partially cross-linking of the polymer. 1. A method for manufacturing a polymer sheet for use as a non-invasive immobilization element for the immobilization of one or more body parts in a predetermined position , wherein a polymer sheet with a thickness of 1.0 to 5.0 mm , which is at least partially made of a polymer material comprising a polymer from the group of polycaprolactone , a copolymer of polyethylene with at least one a-olefin having 3-10 C atoms , or a mixture of two or more of the aforementioned polymers , and a photo-initiator , is at least partly cured by exposure to UV-radiation for the at least partial cross-linking of the polymer.2. Method according to claim 1 , wherein the polymer sheet contains at least a first and a second zone claim 1 , wherein the first and second zone have a different degree of cross-linking.3. Method according to claim 1 , wherein the polymer material further comprises a photo-cross-linker.4. Method according to claim 1 , wherein the sheet claim 1 , prior to exposure to UV radiation claim 1 , is cut into a desired shape.5. Method according to claim 1 , wherein the sheet claim 1 , prior to exposure to UV radiation claim 1 , is at least partially perforated.6. Method according to claim 5 , wherein the polymer sheet has an edge claim 5 , and wherein the edge claim 5 , prior to the exposure to UV radiation claim 5 , is not perforated.7. Method according to claim 1 ...

Подробнее
07-01-2021 дата публикации

EVA SEGMENTED INTRAVAGINAL RINGS CONTAINING PROGESTERONE

Номер: US20210000641A1
Принадлежит:

Disclosed herein are segmented EVA Rings that contain progesterone that can be used to prevent preterm birth in subjects with a shortened cervix or to treat luteal phase deficiency or as luteal phase support. 1. An ethylene-vinyl-acetate (EVA) , intravaginal ring (IVR) , wherein the ring contains at least two segments/fibers , wherein one segment contains progesterone (P) or P equivalent.2. The EVA ring according to claim 1 , further comprising wherein the EVA ring releases about 4 mg/day to about 12 mg/day P after day 1 of insertion.3. The EVA ring according to claim 2 , wherein the EVA ring releases about 4 mg/day P after day 1 of insertion4. The EVA ring according to claim 1 , wherein the EVA ring releases about 8 mg/day P after day 1 of insertion.5. The EVA ring according to claim 1 , wherein the EVA ring releases about 12 mg/day P after day 1 of insertion.6. The EVA ring according to - claim 1 , wherein the EVA segment containing P is prepared using EVA (about 28% vinyl acetate content) with a final drug loading of about 27% w/w.7. The EVA ring according to - claim 1 , wherein the EVA segment containing P is about 74.5 mm to about 156.0 mm in length.8. The EVA ring according to claim 7 , wherein the EVA segment containing P is about 74.5mm to about 148.5 mm in length.9. The EVA ring according to claim 7 , wherein the EVA segment containing P is selected from the group consisting of about 74.5 mm claim 7 , about 148.5 mm and about 156.0 mm.10. The EVA ring according to - claim 7 , wherein the ring is about 57 mm in diameter with a cross-section diameter of about 5 mm.11. The EVA ring according to claim 2 , wherein the rate of release of P is from about 4 mg/day claim 2 , about 8 mg/day or about 12 mg/day days over a period of about 2 days through about 14 days.12. The EVA ring according to claim 11 , wherein the release rates for the 4 mg/day progesterone segmented IVR is about 20.5±2.2 for 0-24 hours; about 3.8±1.3 for days 2-14 claim 11 , and about 2.3±1.5 on ...

Подробнее
07-01-2021 дата публикации

METHOD AND DEVICE FOR SURGERY

Номер: US20210001017A1
Автор: Heriot Wilson J.
Принадлежит:

The invention provides devices, methods and kits for surgery. More specifically, the invention provides a device for surgery comprising: a body comprising a handle; and one or hydrophobic or oleophilic extension or probe, wherein the device is adapted for removal of hydrophobic or oleophilic fluid. A method is also provided for removal of hydrophobic or oleophilic fluid, the method comprising: contacting the hydrophobic or oleophilic fluid with one or more hydrophobic or oleophilic extension or probe to thereby remove the hydrophobic or oleophilic fluid, whereby removal is by one or more of cohesive attraction, adhesion and capillary action. 1. A device for surgery comprising:a body comprising a handle; andone or hydrophobic or oleophilic extension or probe,wherein the device is adapted for removal of hydrophobic or oleophilic fluid.2. The device of claim 1 , wherein the device removes the hydrophobic or oleophilic fluid by one or more of cohesive attraction claim 1 , adhesion and capillary action; and wherein the removal is at least substantially specific for the hydrophobic or oleophilic fluid.3. The device of claim 1 , wherein the device does not apply any extraneous or additional force or energy.4. The device of claim 1 , wherein the device applies aspiration to assist in removal of the hydrophobic or oleophilic fluid.5. The device of claim 1 , wherein the device comprises a bore to allow passage of air for aspiration of fluid from an eye claim 1 , optionally claim 1 , the bore comprising an internal bore.6. The device of claim 5 , wherein the bore comprises a diameter of 5; 6; 7; 8; 9; 10; 11; 12; 13; 14; 15; 16; 17; 18; 19; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; 30; 35; 40 or greater than claim 5 , gauge.7. The device of claim 1 , for use in eye or vitreous surgery.8. A method for removal of hydrophobic or oleophilic fluid claim 1 , the method comprising:contacting the hydrophobic or oleophilic fluid with one or more hydrophobic or oleophilic extension or ...

Подробнее
02-01-2020 дата публикации

SYSTEMS, DEVICES AND METHODS FOR THE CREATION OF A THERAPEUTIC RESTRICTION IN THE GASTROINTESTINAL TRACT

Номер: US20200001047A1
Принадлежит: Fractyl Laboratories Inc.

A system for treating a patient comprises a delivery device and injectate. The delivery device comprises an elongate shaft with a distal portion and at least one delivery element positioned on the elongate shaft distal portion. The delivery device is constructed and arranged to deliver the injectate through the at least one delivery element and into tissue to create a therapeutic restriction in the gastrointestinal tract. Methods of creating a therapeutic restriction are also provided. 1. (canceled)2. A method of treating a patient comprising:advancing a fluid delivery element to a location proximate a luminal segment of the gastrointestinal tract of the patient; anddelivering an injectate through the delivery element and into tissue proximate the luminal segment to create a therapeutic restriction in the luminal segment;wherein the therapeutic restriction causes a loss of weight to the patient.3. The method of claim 2 , wherein the therapeutic restriction is constructed and arranged to restrict the passage of food through a portion of the gastrointestinal tract of the patient.4. The method of claim 2 , wherein the therapeutic restriction is constructed and arranged to cause at least one of: early satiety; premature satiety; or satiety.5. The method of claim 2 , wherein the therapeutic restriction is constructed and arranged to alter an absorptive property and/or a secretive property of the gastrointestinal tract of the patient.6. The method of claim 2 , wherein the therapeutic restriction is created by injecting a volume of injectate of at least 1.0 mL.7. The method of claim 6 , wherein the therapeutic restriction is created by injecting a volume of injectate of at least 3.0 mL.8. The method of claim 2 , wherein the therapeutic restriction is created by injecting a volume of injectate of no more than 20.0 mL.9. The method of claim 8 , wherein the therapeutic restriction is created by injecting a volume of injectate of no more than 10.0 mL.10. The method of claim 2 ...

Подробнее
03-01-2019 дата публикации

CAST FILMS, AND ARTICLES MADE THEREFROM

Номер: US20190002602A1
Принадлежит:

Disclosed herein is a cast film comprising a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers, wherein said polyethylene composition is characterized by the following properties: a melt index, I2, measured according to ASTM D1238 (2.16 kg, 190° C.), of from 1 to 20 g/10 min; a density (measured according to ASTM D792) of from 0.935 to 0.970 g/cm3; a melt flow ratio, I/I, wherein Iis measured according to ASTM D1238 (10 kg, 190° C.) of from 5.5 to 7.0; a molecular weight distribution (Mw/Mn) of from 2.2 to 3.5; and a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms present in the backbone of the composition. 1. A cast film comprising a polyethylene composition comprising the reaction product of ethylene and optionally one or more alpha-olefin comonomers , wherein said polyethylene composition is characterized by the following properties:{'sub': '2', 'a. a melt index, I, measured according to ASTM D 1238 (2.16 kg, 190° C.), of from 1 to 20 g/10 min;'}{'sup': '3', 'b. a density (measured according to ASTM D792) of from 0.940 to 0.970 g/cm;'}{'sub': 10', '2', '10, 'c. a melt flow ratio, I/I, wherein Iis measured according to ASTM D1238 (10 kg, 190° C.) of from 5.5 to 7.0;'}{'sub': w', 'n, 'd. a molecular weight distribution (M/M) of from 2.2 to 3.5; and'}e. a vinyl unsaturation of greater than 0.12 vinyls per one thousand carbon atoms present in the backbone of the composition.2. The cast film of claim 1 , wherein the cast film further comprises a low density polyethylene having a melt index claim 1 , I claim 1 , range of from 0.1-20 g/10 min.3. The cast film of claim 2 , wherein the cast film comprises from 5-30% of the low density polyethylene.4. The cast film of claim 1 , wherein the cast film is a monolayer film.5. The cast film of claim 1 , wherein the cast film is a multilayer film.6. The cast film of claim 1 , wherein the cast film is a cast embossed film.7. The ...

Подробнее
01-01-2015 дата публикации

Biocompatible hydrophilic compositions

Номер: US20150004866A1
Принадлежит: 3M Innovative Properties Co

Durable hydrophilic compositions comprising aliphatic polyester, an anionic surfactant, and in some embodiments, a carrier.

Подробнее
27-01-2022 дата публикации

MEDICAL IMPLANT COMPONENT COMPRISING A COMPOSITE BIOTEXTILE AND METHOD OF MAKING

Номер: US20220023501A1
Принадлежит:

Disclosed herein is a medical implant component comprising a composite biotextile, which biotextile comprises i) a polyolefin fibrous construct comprising at least one strand with titer of 2-250 dtex, tensile strength of at least 10 cN/dtex and comprising high molar mass polyolefin fibers and ii) a coating comprising a biocompatible and biostable polyurethane elastomer comprising a polysiloxane segment and/or having one or more hydrophobic endgroups, wherein the polyurethane coating is present on at least part of the surface of the biotextile and in an amount of 2.5-90 mass % based on composite biotextile. Such composite biotextile, like a partly coated woven fabric, shows an advantageous combination of good biocompatibility, especially hemocompatibility, high strength and pliability, and laser cuttability; allowing to make pieces of fabric having well-defined regular edges that have high suture retention strength. The invention also provides a method of making said composite biotextile. Further embodiments concern the use of such biotextile in or as medical implant component for an implantable medical device and the use of such medical implant component in making an implantable medical device; such as in orthopedic applications and cardiovascular implants. Other embodiments include such medical devices or implants comprising said medical implant component. 2. (canceled)3. The medical implant component according to claim 1 , wherein the fibrous construct has anisotropic properties claim 1 , which anisotropy results from a combination of at least two different strands in the fibrous construct claim 1 , and/or from a combination of at least two of a rope claim 1 , a cable claim 1 , a tape claim 1 , and a textile in the fibrous construct.4. The medical implant component according to claim 1 , wherein the at least one strand has a titer of 4-140 dtex.5. The medical implant component according to claim 1 , wherein the polyolefin fibrous construct has a thickness of about ...

Подробнее
08-01-2015 дата публикации

PROSTHETIC DEVICE INCLUDING ELECTROSTATICALLY SPUN FIBROUS LAYER AND METHOD FOR MAKING THE SAME

Номер: US20150012082A1
Принадлежит:

In accordance with certain embodiments of the present disclosure, a process of forming a prosthetic device is provided. The process includes forming a dispersion of polymeric nanofibers, a fiberizing polymer, and a solvent, the dispersion having a viscosity of at least about 50,000 cPs. A tubular frame is positioned over a tubular polymeric structure. Nanofibers from the dispersion are electrospun onto the tubular frame to form a prosthetic device. The prosthetic device is heated. 1. A composite structure comprising a tubular frame and comprising a first tubular polymeric layer defining an inner surface of the structure and a second tubular polymeric layer defining an outer surface of the structure , wherein at least one of the first tubular polymeric layer and second tubular polymeric layer comprises a plurality of polytetrafluoroethylene (PTFE) nanofibers.2. The composite structure of claim 1 , wherein the composite structure is a stent and wherein at least one of the first tubular polymeric layer and tubular polymeric layer is configured to enhance cellular ingrowth.3. The composite structure of claim 2 , wherein the plurality of PTFE fibers is a plurality of spun PTFE fibers.4. The composite structure of claim 2 , wherein the plurality of spun PTFE fibers is a plurality of electrospun PTFE fibers.5. The composite structure of claim 2 , further comprising a frame configured to exhibit radial strength and promote recovery during deployment of the stent.6. The composite structure of claim 2 , wherein the plurality of PTFE fibers has a density such that there is a range of distances of about 0.1μ to about 50μ between points of contact of the fibers.7. The composite structure of claim 2 , further comprising a third layer joined to the first layer and the second layer.8. The composite structure of claim 7 , wherein the third layer is configured to inhibit cellular communication.9. The composite structure of claim 8 , wherein both the first tubular polymeric layer and ...

Подробнее
08-01-2015 дата публикации

MULTILAYERED COMPOSITE

Номер: US20150012108A1
Принадлежит:

In accordance with certain embodiments of the present disclosure, a process for forming a multilayered electrospun composite is provided. The process includes forming a dispersion of polymeric nanofibers, a fiberizing polymer, and a solvent, the dispersion having a viscosity of at least about 50,000 cPs. Nanofibers from the dispersion are electrospun onto a first ePTFE layer. A second ePTFE layer is applied onto the nanofibers to form a composite structure. The composite structure is heated. 1. A composite structure comprising a plurality of nanofibers on a first surface of a first polymeric layer.2. The composite structure of claim 1 , wherein the nanofibers comprise one of polytetrafluoroethylene (PTFE) claim 1 , nylon claim 1 , polyurethane claim 1 , polyester claim 1 , fluorinated ethylene propylene claim 1 , or combinations thereof.3. The composite structure of claim 1 , wherein the plurality of nanofibers is a plurality of spun nanofibers.4. The composite structure of claim 3 , wherein the plurality of spun nanofibers is a plurality of electrospun nanofibers.5. The composite structure of claim 1 , wherein the first polymeric layer is a first layer of expanded polytetrafluoroethylene (ePTFE) and wherein the composite structure further comprises a second ePTFE layer.6. The composite structure of claim 5 , wherein the plurality of nanofibers are sandwiched between and bind together the first ePTFE layer and the second ePTFE layer.7. A stent claim 5 , comprising:a first layer of polytetrafluoroethylene (PTFE) fibers disposed such that it defines an outside surface of the stent; anda second layer of PTFE fibers disposed such that it defines an inside surface of the stent.8. The stent of claim 7 , wherein the surface properties of at least one of the layers is modulated to manipulate cellular ingrowth and response.9. A composite structure comprising a tubular polymeric inner surface and a tubular polymeric outer surface claim 7 , wherein at least one of the tubular ...

Подробнее
03-02-2022 дата публикации

Cerebral spinal fluid shunt plug

Номер: US20220032019A1
Принадлежит: Longeviti Neuro Solutions LLC

A cerebral spinal fluid shunt plug includes a shunt plug housing having a shunt valve recess formed therein and a window recess with an access hole. The cerebral spinal fluid shunt plug also includes a shunt valve shaped and dimensioned for positioning within the shunt valve recess of the shunt plug housing and a lucent disk shaped and dimensioned for the passage through the central access hole of the shunt plug housing. In another embodiment, a cerebral spinal fluid shunt plug includes a shunt plug housing having a shunt valve recess formed therein and an intracranial monitoring device recess with an access hole. A shunt valve is positioned within the shunt valve recess of the shunt plug housing and an intracranial monitoring device is passed through the central access hole of the shunt plug housing.

Подробнее
19-01-2017 дата публикации

ROCURONIUM BROMIDE INJECTION SOLUTION-FILLED PREFILLED SYRINGE

Номер: US20170014431A1
Принадлежит: TERUMO KABUSHIKI KAISHA

A rocuronium bromide injection solution-prefilled syringe of the present invention includes a syringe comprising an outer cylinder made of synthetic resin, a gasket which is accommodated inside the outer cylinder and liquid-tightly slidable inside the outer cylinder, and a seal member for sealing a distal end opening of the outer cylinder; and a rocuronium bromide injection solution filled inside the syringe. The gasket is formed by vulcanized chlorinated butyl rubber added calcined clay, and said calcined clay is only added as an inorganic filler classified as an inorganic reinforcing agent and an inorganic filling agent. 1. A rocuronium bromide injection solution-prefilled syringe comprises a syringe having an outer cylinder made of synthetic resin , a gasket which is accommodated inside said outer cylinder and liquid-tightly slidable inside said outer cylinder , and a seal member for sealing a distal end opening of said outer cylinder; and a rocuronium bromide injection solution filled inside said syringe ,wherein said gasket is formed by vulcanized chlorinated butyl rubber added calcined clay, and said calcined clay is only added as an inorganic filler classified as an inorganic reinforcing agent and an inorganic filling agent.2. A rocuronium bromide injection solution-prefilled syringe according to claim 1 , wherein said gasket is added 50 to 110 parts by weight of said calcined clay per 100 parts by weight of said chlorinated butyl rubber.3. A rocuronium bromide injection solution-prefilled syringe according to claim 1 , wherein an average particle diameter of said calcined clay is set to not more than 1.0 μm.4. A rocuronium bromide injection solution-prefilled syringe according to claim 1 , wherein said synthetic resin is polypropylene or cyclic polyolefin.5. A rocuronium bromide injection solution-prefilled syringe according to claim 1 , wherein said prefilled syringe is subjected to high-pressure steam sterilization. The present invention relates to a ...

Подробнее
19-01-2017 дата публикации

IMPLANTABLE MEDICAL DEVICE

Номер: US20170014553A1
Принадлежит:

According to the invention there is provided inter alia an implantable medical device with coatings comprising an immobilized heparin moiety and elutable paclitaxel and to methods for making such devices. 1. An implantable medical device with a surface having a coating comprising:a first coating layer comprising an immobilized heparin moiety and a second particulate coating layer comprising elutable paclitaxel and at least one organic additive, wherein at least a portion of the second particulate coating layer is in contact with at least a portion of the first coating layer.2. An implantable medical device according to claim 1 , wherein the medical device is a tubular medical device.3. An implantable medical device according to claim 1 , wherein the first coating layer comprises a polymer.4. An implantable medical device according to claim 3 , wherein the heparin moiety is covalently attached to the polymer.5. An implantable medical device according to or claim 4 , wherein the polymer is a cationic polymer.6. An implantable medical device according to claim 5 , wherein the first coating layer comprises one or more coating bilayers of cationic polymer and anionic polymer claim 5 , the innermost layer being a layer of cationic polymer and the outermost layer being the layer of cationic polymer to which the heparin moiety is covalently attached.7. An implantable medical device according to claim 3 , wherein the heparin moiety is covalently end-point attached to the polymer and wherein the end-point attached heparin moiety is connected through its reducing end.8. (canceled)9. (canceled)10. An implantable medical device according to claim 1 , wherein the or each organic additive is non-polymeric and hydrolytically stable.11. (canceled)12. An implantable medical device according to claim 1 , wherein at least a proportion of the second particulate coating layer comprising paclitaxel and at least one organic additive melts as a single phase at a lower temperature than the ...

Подробнее
18-01-2018 дата публикации

Analyte Sensors Having a Membrane with Low Temperature Sensitivity

Номер: US20180014761A1
Принадлежит:

Embodiments of the present disclosure relate to analyte determining methods and devices (e.g., electrochemical analyte monitoring systems) that have a membrane with low temperature sensitivity. The sensing layer is disposed on a working electrode of in vivo and/or in vitro analyte sensors, e.g., continuous and/or automatic in vivo monitoring using analyte sensors and/or test strips. Also provided are systems and methods of using the, for example electrochemical, analyte sensors in analyte monitoring. 167-. (canceled)68. An electrode assembly , comprising:an electrode;a sensing layer disposed on the electrode, the sensing layer comprising an analyte responsive enzyme; anda diffusion limiting polymeric membrane disposed on the sensing layer, wherein the polymeric membrane comprises a pyridine-based polymer, an ethylene oxide substituent, and a propylene oxide substituent,wherein diffusion of an analyte through the diffusion limiting membrane to the sensing layer does not change more than 5% per ° C. over a range of physiological temperatures.69. The electrode assembly of claim 68 , wherein the sensing layer comprises a glucose-responsive enzyme.70. The electrode assembly of claim 69 , wherein the glucose-responsive enzyme comprises glucose oxidase.71. The electrode assembly of claim 70 , wherein the sensing layer further comprises a redox mediator.72. The electrode assembly of claim 71 , wherein the redox mediator comprises a ruthenium-containing complex or an osmium-containing complex.73. The electrode assembly of claim 71 , wherein the redox mediator is bound to a polymer.74. The electrode assembly of claim 68 , wherein the analyte responsive enzyme is bound to a polymer.75. The electrode assembly of claim 68 , wherein the pyridine-based polymer comprises a poly(4-vinylpyridine)-co-polystyrene polymer.77. The electrode assembly of claim 68 , further comprising a counter electrode and a reference electrode.78. The electrode assembly of claim 68 , wherein at least a ...

Подробнее
21-01-2016 дата публикации

Recycled resin compositions and disposable medical devices made therefrom

Номер: US20160015867A1
Принадлежит: Becton Dickinson and Co

Syringe plunger rods comprising an elongate body formed from a composition comprising one or more of virgin material, a sterilization-stable recycled resin and a biobased compositions are described. Plunger rods comprising a plurality of ribs, some of which may have a plurality of openings, are also described. The plunger rods requiring less material while maintaining sufficient structural integrity to function properly.

Подробнее
21-01-2016 дата публикации

Plasma or cvd pre-treatment for lubricated pharmaceutical package, coating process and apparatus

Номер: US20160015898A1

A syringe comprising a wall having a generally cylindrical interior surface defining a lumen with a primer coating or layer between 1 and 1000 nm thick of SiOx Cy Hz, in which x is from about 0.5 to about 2.4, y is from about 0.6 to about 3, and z is from about 2 to about 9, on at least a portion of the interior surface, the primer coating or layer having an outside surface facing the interior surface of the barrel and an inside surface facing the lumen. A deposit of fluid lubricant on the inside surface of the primer coating or layer is further provided.

Подробнее
16-01-2020 дата публикации

METHOD AND DEVICE FOR ENHANCED TRANSDERMAL VISUALIZATION OF MEDICAL DEVICES

Номер: US20200015930A1
Принадлежит:

Implantable and/or insertable devices having a near-IR fluorescing material that allows the device to be visualized through a patient's skin. Also described herein are apparatuses for imaging devices having a near-IR fluorescing material, and methods of imaging devices having a near-IR fluorescing material from within the body, including methods of modifying an implanted device having near-IR fluorescing material. 1. An arteriovenous shunt (AV shunt) implant device that is configured to be visible through the patient's skin using near-infrared (near-IR) illumination , the device comprising:an elongated tubular body the body comprising polytetrafluoroethylene (PTFE) and having an inner lumen forming an inner layer;a first middle layer extending at least partially over the inner layer, the first middle layer comprising a first substrate and a near-IR dye, wherein the near-IR dye is at a concentration of between 0.0001% to 0.5% w/w and comprises one or more of: 1,1′,3,3,3′,3′-Hexamethylindotricarbocyanine iodide (HITCI), and a rylene dye; anda first outer layer extending over the first middle layer and sealing the first middle layer between the first outer layer and the inner layer.2. The device of claim 1 , wherein the near-IR dye is at a concentration of between 0.001% w/w and 0.1% w/w.3. The device of claim 1 , wherein the tubular body comprises a second middle layer separate from the first middle layer claim 1 , wherein the second middle layer comprises a second substrate and a second near-IR dye.4. The device of claim 3 , wherein the second middle layer is covered by the first outer layer or a second outer layer extending over the second middle layer and sealing the second middle layer between the second outer layer and the inner layer.5. The device of claim 3 , wherein the second near-IR dye is the same as the first near-IR dye and the second substrate is the same as the first substrate.6. The device of claim 1 , wherein the first substrate comprises silicone.7. ...

Подробнее
15-01-2015 дата публикации

PROCESSABILITY OF POLYMERIC SUBSTRATES AND RELATED METHODS

Номер: US20150018659A1
Автор: VOIT Walter, Ware Taylor
Принадлежит:

The invention described herein consists of a process that enables increased adhesion of thin film materials (such as metals, metal oxides, carbon nanotubes or other materials) to solvent and temperature sensitive, and non-planar, polymer substrates and the fabrication of softening electronics. Importantly, this process can be used to create exceptional embodiments of the disclosed flexible electronic devices having dynamic properties that make them suitable for implantation in the human body. 1. A method for improving the adhesion of films to polymeric materials , the method comprising depositing a first layer of metals , nanotubes or other ionic or electronic conducting materials such as but not limited to iridium oxide , titanium nitride , titanium oxide or graphene oxide , or combinations of the materials onto the surface of a first substrate to prepare a mold; preparing and depositing , solvent casting , or polymerizing a second layer comprised of a polymer on the first layer within the mold; and removing the polymer coated layer from the mold such that the thin film material layer is removed from the first substrate and transferred to the polymer layer which serves as a second substrate.2. The method according to wherein claim 1 , the first layer comprises gold.3. The method according to wherein claim 2 , the first layer further comprises chromium or titanium.4. The method according to wherein claim 1 , the polymer is a (meth)acrylate claim 1 , thiol-ene claim 1 , urea claim 1 , urethane claim 1 , thiourethane claim 1 , ester claim 1 , or olefin with or without an initiator or catalyst.5. The method according to wherein claim 1 , the first layer is patterned prior to the deposition of the second layer.6. The method according to wherein claim 1 , the first substrate is made from the radiation crosslinking of blends of a thermoplastic polymer and a polyunsaturated monomer.7. The method according to wherein claim 1 , the first substrate is formed by curing epoxy.8 ...

Подробнее
15-01-2015 дата публикации

STENT GRAFT ASSEMBLY AND METHOD

Номер: US20150018931A1
Принадлежит: COVIDIEN LP

A graft device can include a graft component and an expandable component that has a longitudinal axis and a coupling portion. The coupling portion has a surface extending radially relative to the longitudinal axis. The graft component also has a portion that is coupled to the surface of the expandable component for securing the graft component relative to the expandable component. For example, the graft component portion can be frictionally engaged between the surface and a member positioned against the expandable component. 1. A graft device comprising:an expandable component comprising a longitudinal axis and a coupling portion having a surface extending radially relative to the longitudinal axis; anda graft component having a section frictionally engaged against the surface for securing the graft component relative to the expandable component.2. The device of claim 1 , further comprising a member frictionally engaging the graft component against the surface such that the graft component is interposed between the surface and the member.3. The device of claim 2 , wherein the expandable component comprises an opening that (i) extends radially through the expandable component and (ii) defines a volume claim 2 , the opening being at least partially defined by the surface claim 2 , and wherein the member is received within the volume such that the section is disposed within the volume and engaged between the surface and the member.4. The device of claim 2 , wherein the member is frictionally received within the opening without piercing the graft component.5. The device of claim 1 , wherein the surface extends substantially normal relative to the longitudinal axis.6. The device of claim 1 , wherein the graft component extends circumferentially around the expandable component.7. The device of claim 1 , wherein the graft component comprises a tubular membrane extending over the stent.8. The device of claim 1 , wherein the graft component comprises a polymeric sleeve.9. ...

Подробнее
26-01-2017 дата публикации

COMPLIANCE CONTROL STITCHING IN SUBSTRATE MATERIALS

Номер: US20170020646A1
Принадлежит:

Compliance control stitch patterns sewn or embroidered into biotextile or medical textile substrates impart reinforcing strength, and stretch resistance and control into such substrates. Compliance control stitch patterns may be customizable to particular patients, substrate implantation sites, particular degenerative or diseased conditions, or desired time frames. Substrates having compliance control stitch patterns sewn or embroidered into them may be used in tissue repair or tissue reconstruction applications. 129-. (canceled)30. A method for repairing or reconstructing soft tissue in the body of a subject in need thereof , comprising implanting at a location in need of soft tissue repair or reconstruction an implant comprising a substrate comprising a biotextile , medical textile , or both a biotextile and medical textile , and one or more compliance control stitch patterns sewn or embroidered into the substrate.31. The method according to claim 30 , wherein the location comprises a hernia.32. The method according to claim 30 , wherein the location comprises a breast.33. The method according to claim 30 , wherein the substrate comprises a biotextile claim 30 , and the biotextile comprises an extracellular matrix.34. The method according to claim 33 , wherein the one or more compliance control stitch patterns comprise monofilament threads or yarns comprising polyethylene.35. The method according to claim 33 , wherein the one or more compliance control stitch patterns comprise threads or yarns comprising polypropylene.36. The method according to claim 33 , wherein the one or more compliance control stitch patterns comprise a plurality of lines comprising a plurality of repeating angles claim 33 , said lines oriented along one or more axes of the substrate.37. The method according to claim 36 , wherein the one or more compliance control stitch patterns is uniaxial.38. The method according to claim 36 , wherein the one or more compliance control stitch patterns is ...

Подробнее
10-02-2022 дата публикации

Embolization Device Constructed From Expansile Polymer

Номер: US20220039802A1
Принадлежит:

Devices for the occlusion of body cavities, such as the embolization of vascular aneurysms and the like, and methods for making and using such devices are described. 1. A device for implantation in an animal , comprising:a hydrogel having ionizable functional groups wherein said hydrogel comprises at least one macromer, further wherein said hydrogel is environmentally-responsive, and further wherein said hydrogel has an unexpanded bending resistance of about 0.1 mg to about 85 mg.2. A device according to claim 1 , wherein said macromer has a molecular weight of about 400 grams/mole to about 35 claim 1 ,000 grams/mole.3. A device according to claim 1 , wherein said hydrogel comprises polyethers claim 1 , polyurethanes claim 1 , derivatives thereof claim 1 , or combinations thereof.4. A device according to claim 1 , wherein said with ionizable functional groups comprise basic groups.5. A device according to claim 4 , wherein said basic groups comprise an amine claim 4 , derivatives thereof claim 4 , or combinations thereof.6. A device according to claim 5 , wherein said basic functional groups can be deprotonated at pHs greater than the pKa or protonated at pHs less than the pKa of said functional groups.7. A device according to claim 1 , wherein said with ionizable functional groups comprise acidic groups.8. A device according to claim 7 , wherein said acidic groups comprise a carboxylic acid claim 7 , derivatives thereof claim 7 , or combinations thereof.9. A device according to claim 8 , wherein said acidic functional groups can be protonated at pHs less than the pKa or de-protonated at pHs greater than the pKa of said functional groups.10. A device according to claim 1 , wherein said hydrogel comprises vinyl claim 1 , acrylates claim 1 , acrylamides claim 1 , methacrylates claim 1 , derivatives thereof claim 1 , or combinations thereof.11. A device according to claim 1 , wherein said macromer comprises poly(ethylene glycol) claim 1 , derivatives thereof claim 1 , ...

Подробнее
25-01-2018 дата публикации

Self-Cleaning Membrane for Medical Devices

Номер: US20180021483A1
Принадлежит: The Texas A&M University System

The disclosure provides a method for cleaning an implanted medical device. In one embodiment, the method includes providing a medical device including a membrane; wherein the membrane comprises a thermoresponsive hydrogel including N-isopropylacrylamide (NIPAAm) or poly(N-isopropylacrylamide) (PNIPAAm), and a volume phase transition temperature (VPTT). The method also includes implanting the medical device into a target area; wherein the membrane temperature is maintained at substantially the same temperature as the target area; wherein temperature fluctuations within the target area that approach, meet and/or exceed the volume phase transition temperature induce deswelling or relative deswelling in the membrane and temperature fluctuations within the target area that are relatively lower and/or approach and/or fall below the volume phase transition temperature induce swelling or relative swelling in the membrane. 1. A method for cleaning an implanted medical device comprising:providing a medical device comprising a membrane; wherein the membrane comprises a thermoresponsive hydrogel comprising N-isopropylacrylamide and a volume phase transition temperature;implanting the medical device into a target area; wherein a membrane temperature is maintained at substantially the same temperature as the target area; wherein temperature fluctuations within the target area that approach, meet and/or exceed a volume phase transition temperature induce deswelling or relative deswelling in the membrane and temperature fluctuations within the target area that are relatively lower and/or approach and/or fall below the volume phase transition temperature induce swelling or relative swelling in the membrane.2. The method of claim 1 , wherein the medical device comprises a glucose sensor.3. The method of claim 1 , wherein the membrane further comprises N-vinylpyrollidone.4. The method of claim 3 , wherein the N-vinylpyrollidone is present in an amount between about 1% to about 2% wt % ...

Подробнее
28-01-2016 дата публикации

POLYMER COMPOSITIONS WITH ENHANCED RADIOPACITY

Номер: US20160024239A1
Принадлежит:

Radiopaque polymer compositions and methods for making the compositions are provided. These radiopaque polymer compositions include polymer compositions comprising a crosslinked polymer network, the network comprising a first repeating unit derived from a monofunctional monomer and a second repeating unit derived from a crosslinker monomer or oligomer having more than two polymerizable groups. Devices formed from radiopaque polymer compositions are also provided. 2. The polymer composition of claim 1 , wherein the branched monomer or oligomer of the second reagent comprises at least three (meth)acrylate claim 1 , (meth)acrylamide or styryl groups.3. The polymer composition of claim 2 , wherein the branched monomer or oligomer of the second reagent comprises from 3 to 20 terminal acrylate groups.43. The polymer composition of any of - claims 1 , wherein the branched monomer or oligomer of the second reagent comprises a central portion Rlinked to at least two end portions claims 1 , Yand Y claims 1 , at least one of the end portions being branched.6. The polymer composition of wherein one of Yand Yis according to Formula 20 or 21 and the other of Yand Yis selected from the group consisting of —COCl —COH claim 4 , —COR claim 4 , —CONRR claim 4 , Ris a C-Calkyl group and each of R-Ris independently hydrogen or a C-Calkyl group.76. The polymer composition of any of - claims 4 , wherein the central portion Ris linked to the end portions Yand Ythrough linker L claims 4 , wherein Lis a single bond claims 4 , —(CH)— claims 4 , —(HCCH)— claims 4 , —O— claims 4 , —S— claims 4 , —SO— claims 4 , —SO— claims 4 , —SO— claims 4 , —OSO— claims 4 , —NR— claims 4 , —CO— claims 4 , —COO— claims 4 , —OCO— claims 4 , —OCOO— claims 4 , —CONR— claims 4 , —NRCO— claims 4 , —OCONR— claims 4 , —NRCOO— claims 4 , or —NRCONR{'sup': 3', '9, 'sub': 1', '10, 'and each of R-Ris independently hydrogen or C-Calkyl.'}87. The polymer composition of any of - wherein Ris C-Calkylene.10. The polymer ...

Подробнее
22-01-2015 дата публикации

BIODEGRADABLE ENDOPROSTHESES AND METHODS FOR THEIR FABRICATION

Номер: US20150025619A1
Принадлежит: Elixir Medical Corporation

The disclosure provides biodegradable implantable devices such as a stent comprising a biodegradable polymeric wherein the polymeric material is treated to control crystallinity and/or Tg. The stent is capable to expand at body temperature in a body lumen from a crimped configuration to a deployed diameter and have sufficient strength to support a body lumen. 130.-. (canceled)31. A biodegradable polymeric stent prosthesis , comprising:a biodegradable polymeric material which has been formed as a tubular body, said tubular body has been patterned at 1.1-1.5 times an intended deployed diameter, and has been crimped to a configuration having a smaller diameter than the intended deployed diameter, said stent prosthesis being expandable from the crimped configuration to a deployed configuration and having sufficient strength in the deployed configuration to support a blood vessel.32. The biodegradable polymeric stent of claim 31 , wherein the tubular body has been treated.33. The biodegradable polymeric stent of claim 32 , wherein the tubular body is patterned after treatment.34. The biodegradable polymeric stent of claim 32 , wherein the tubular body has been subjected to one or more treatments of heating after said tubular body has been patterned.35. The biodegradable polymeric stent of claim 31 , wherein the tubular body is patterned at a diameter 1.1-1.3 times the intended deployed diameter.36. The biodegradable polymeric stent of claim 32 , wherein the tubular body is subjected to more than one treatment.37. The biodegradable polymeric stent of claim 32 , wherein the treatment comprises at least one of pressurizing claim 32 , vacuum claim 32 , heating claim 32 , cooling claim 32 , cross-linking claim 32 , exposure to radiation claim 32 , and addition of additives.38. The biodegradable polymeric stent of claim 32 , wherein the treatment includes heating the tubular body above Tg and below the melting temperature of the polymeric material.39. The biodegradable ...

Подробнее
29-01-2015 дата публикации

BIOABSORBABLE POLYMERIC COMPOSITION AND MEDICAL DEVICE

Номер: US20150028513A1
Автор: Cottone Robert J.
Принадлежит: ORBUSNEICH MEDICAL, INC.

A method for fabricating an embodiment of a medical device comprising the steps of: preparing a biodegradable polymeric structure; coating the biodegradable polymeric structure with a polymeric coat including a pharmacological or biological agent; cutting the structure into patterns configured to allow for crimping of the cut structure and expansion of the cut structure after crimping into a deployed configuration. 120-. (canceled)21. A method for making a polymeric scaffold comprising the steps of:blending a polymer composition comprising a crystallizable polymer composition comprising poly L-lactide, and/or poly D-lactide, wherein the molecular weight (M.W.) of the polymer ranges from about 1.5 to about 3.5 IV;molding or extruding the polymer composition to produce a scaffold; andcoating the scaffold with a pharmaceutical composition comprising a ligand,wherein the polymer composition is crystallizable when the scaffold is expanded.22. The method of claim 21 , wherein the molecular weight (M.W.) of the polymer ranges from about 2.5 to about 3 IV.23. The method of claim 21 , wherein the blending further comprises blending a pharmacological and/or biological agent into the polymer composition.24. The method of claim 21 , wherein the blending further comprises blending a radioopaque or radio-detectable material into the polymer composition.25. The method of claim 23 , wherein the pharmacological agent is selected from the group consisting of: cyclosporin A claim 23 , mycophenolic acid claim 23 , mycophenolate mofetil acid claim 23 , rapamycin claim 23 , rapamycin derivatives claim 23 , biolimus A9 claim 23 , CCI-779 claim 23 , RAD 001 claim 23 , AP23573 claim 23 , azathioprene claim 23 , tacrolimus (FK506) claim 23 , tranilast claim 23 , dexamethasone claim 23 , corticosteroid claim 23 , everolimus claim 23 , pimecrolimus claim 23 , retinoic acid claim 23 , vitamin E claim 23 , rosiglitazone claim 23 , simvastatins claim 23 , fluvastatin claim 23 , estrogen claim 23 ...

Подробнее
04-02-2016 дата публикации

Systems and methods for forming materials in situ within a medical device

Номер: US20160030051A1
Принадлежит: Endologix LLC

A method for forming a material in an in situ medical device by initiating polymerization of water soluble polymer precursors in an aqueous solution during or after transport of the polymerizable solution from its storage container to a space inside the in situ medical device is described. The stored aqueous solution with water soluble precursors lacks a free radical initiator which, in a powder form, is introduced into the aqueous solution during or after its transport into the space inside the in situ medical device. This storage and delivery system provides greater stability to the stored aqueous solution, allowing it to be stored at ambient temperature and providing extended shelf life over the solutions used in existing in situ polymerization systems. The flexibility to store and deliver/transport only one aqueous solution, instead of requiring the use of two different solutions, is also a benefit.

Подробнее
04-02-2016 дата публикации

PROSTHETIC DEVICE INCLUDING ELECTROSTATICALLY SPUN FIBROUS LAYER AND METHOD FOR MAKING THE SAME

Номер: US20160030154A1
Принадлежит:

In accordance with certain embodiments of the present disclosure, a process of forming a prosthetic device is provided. The process includes forming a dispersion of polymeric nanofibers, a fiberizing polymer, and a solvent, the dispersion having a viscosity of at least about 50,000 cPs. A tubular frame is positioned over a tubular polymeric structure. Nanofibers from the dispersion are electrospun onto the tubular frame to form a prosthetic device. The prosthetic device is heated. 128-. (canceled)29. A deposited fiber mat comprising a portion of a medical device , the fiber mat comprising:deposited fibers having diameters of 10 nm to 2000 nm.30. The deposited fiber mat of claim 29 , wherein the fiber mat comprises pores with diameters from about 0.05 to about 50 μm.31. A method of manufacturing a polymeric material comprising: obtaining a sheet comprising a mat of polymeric fibers; sintering the sheet; and expanding the sheet in a first direction after the fibers are deposited.32. The method of claim 31 , wherein obtaining the sheet comprises: mixing a PTFE-water dispersion comprising from 10% to 85% PTFE solids by weight with PEO to create a mixture having about 1 to 10 wt % PEO/mL of total mixture or more; spinning the mixture; collecting spun fibers on a rotating tube assembly; and wherein the sintering is at a temperature of 35° C. to 485° C. The present application is a continuation of U.S. application Ser. No. 14/331,422, filed Jul. 14, 2014; which application is a continuation of U.S. application Ser. No. 13/564,927, filed on Aug. 2, 2012, now U.S. Pat. No. 9,034,031, issued May 19, 2015; which application is a continuation application of U.S. application Ser. No. 12/852,993, filed on Aug. 9, 2010; now U.S. Pat. No. 8,262,979, issued Sep. 11, 2012; which is based on and claims priority to U.S. Provisional Application 61/232,252, filed Aug. 7, 2009, and all of the foregoing are incorporated herein in their entirety by this reference.The successful use of ...

Подробнее
24-04-2014 дата публикации

Adhesive composition for carrying therapeutic agents as delivery vehicle on coating applied to vascular grafts

Номер: US20140112968A1

Water-soluble polymeric adhesive compositions and their use as delivery vehicles for carrying therapeutic agents on implantable devices, such as vascular grafts, are disclosed. Use of drug-coated vascular grafts is demonstrated for delivery of the therapeutic agents in vivo, thereby inhibiting restenosis or neointimal hyperplasia of the vascular graft and inhibiting infection at the vascular graft site. Methods of forming the adhesive and making the coated vascular grafts are also disclosed.

Подробнее
04-02-2016 дата публикации

Stabilization of Essential Oils Within a Hydrocolloid Adhesive

Номер: US20160030579A1
Автор: CARTY Neal
Принадлежит: AVERY DENNISON CORPORATION

Various adhesive compositions are described which comprise one or more essential oils. The adhesive compositions may optionally comprise one or more active agents such as pharmaceutical agents. Also described are related methods of improving the stability of essential oil(s) in adhesive compositions by incorporating polyvinylpyrrolidone. Also described are related methods of using the compositions and articles incorporating such compositions. 1. A method of enhancing the stability of essential oils in an adhesive composition , wherein the adhesive composition comprises an adhesive component , at least one essential oil , and an absorbent , the method comprising:providing polyvinylpyrrolidone;incorporating the polyvinylpyrrolidone in the adhesive composition, whereby the stability of the essential oils is enhanced.2. The method of claim 1 , wherein the absorbent is selected from the group consisting of insoluble swellable polymers claim 1 , hydratable polymers claim 1 , water soluble polymers claim 1 , synthetic absorbents claim 1 , super absorbent polymers claim 1 , and combinations thereof3. The method of claim 2 , wherein the absorbent is carboxymethyl cellulose.4. The method of claim 3 , wherein the carboxymethyl cellulose has a degree of substitution within a range from 0.2 to 1.5.54. The method of any one of - claims 3 , wherein the carboxymethyl cellulose has a molecular weight in a range from 17 claims 3 ,000 to 700 claims 3 ,000.65. The method of any one of - wherein the adhesive composition further comprises an active agent.7. The method of claim 6 , wherein the active agent is selected from the group consisting of analgesics claim 6 , local anesthetics claim 6 , anti-acne agents claim 6 , anti-angina agents claim 6 , antiarrhythmics claim 6 , antibacterial claim 6 , anti-convulsives claim 6 , antidepressants claim 6 , anti-rheumatics claim 6 , sex hormones claim 6 , anti-fungals claim 6 , anti-hypertensives claim 6 , anti-hypothyroid agents claim 6 , anti- ...

Подробнее
01-02-2018 дата публикации

VASCULAR EMBOLIZATION DEVICE AND PRODUCTION METHOD THEREFOR

Номер: US20180028190A1
Принадлежит: KANEKA MEDIX CORPORATION

A vascular embolization device having the function of administering a biochemical active material and also having high flexibility is provided. Specifically, the vascular embolization device includes a coil and a biochemical active material-containing resin wire inserted in the inside of the coil, in which the resin wire is a multilayer strand including a core and at least one outer layer, and the core and the at least one outer layer individually include resin compositions with solubilities different from each other in the same organic solvent. 122-. (canceled)23. A vascular embolization device comprising: a coil; and a resin wire that contains a biochemical active material and is inserted in an inside of the coil , whereinthe resin wire is a multilayer strand including a core and at least one outer layer, andthe core and the at least one outer layer individually contain resin compositions with solubilities different from each other in a same organic solvent.24. The vascular embolization device according to claim 23 , wherein the resin composition in the at least one outer layer has a solubility higher than a solubility of the resin composition in the core.25. The vascular embolization device according to or claim 23 , wherein the resin composition in at least one of the core and the at least one outer layer is composed of an ethylene-vinyl acetate copolymer.26. The vascular embolization device according to claim 23 , wherein the resin compositions in the outer layer and the core individually contain ethylene-vinyl acetate copolymers with compositions different from each other.27. The vascular embolization device according to claim 26 , wherein the ethylene-vinyl acetate copolymer in the core has a vinyl acetate unit content of 10 to 30% by weight claim 26 , and the ethylene-vinyl acetate copolymer in the outer layer has a vinyl acetate unit content of 30 to 50% by weight.28. The vascular embolization device according to claim 23 , wherein the resin wire is ...

Подробнее
04-02-2016 дата публикации

SOLIDIFIABLE COMPOSITION FOR PREPARATON OF LIQUID-INFUSED SLIPPERY SURFACES AND METHODS OF APPLYING

Номер: US20160032074A1
Принадлежит:

A body having a lubricant reservoir is described, comprising: a porous polymeric body; and a lubricating liquid, said lubricating liquid occupying the pores to provide a lubricated porous surface having a lubricant reservoir and a lubricant overlayer over the polymer surface. Also described herein is a system for use in the formation of a low-adhesion and low-friction surface includes a flowable precursor composition comprising a prepolymer and a curing agent, said composition capable of application as a coating over a large surface area; a lubricating liquid that is capable of forming a coating with the hardened precursor composition, wherein the lubricating liquid and hardened polymer together form a coating of lubricating liquid stabilized on and in the hardened polymer; and instructions for applying the precursor composition onto a surface for the purpose of obtaining a low-adhesion and low-friction surface. 1. A body having a lubricant reservoir , comprising:a porous polymeric body; anda lubricating liquid, said lubricating liquid occupying the pores to provide a lubricated porous surface having a lubricant reservoir and a lubricant overlayer over the polymer surface.2. The body of claim 1 , wherein the lubricant is swelling the porous polymeric body.3. The body of claim 1 , wherein the pores are discontinuous.4. The body of claim 1 , wherein the pores are continuous.5. The body of claim 1 , wherein the pore volume is in the range of 1-25% of the cured polymer claim 1 , or higher.6. The body of claim 1 , further comprising a skin layer of lower porosity than the interior body.7. The body of claim 6 , wherein the skin layer is non-porous.8. The body of claim 1 , further comprising one or more additives selected from the group consisting of small molecules or microparticle fillers or nanoparticle fillers claim 1 , such as anti-oxidants claim 1 , UV-stabilizers claim 1 , plasticizers claim 1 , anti-static agents claim 1 , porogens claim 1 , slip agents claim 1 , ...

Подробнее
17-02-2022 дата публикации

Electrospun material covered medical appliances and methods of manufacture

Номер: US20220047783A1
Принадлежит: Merit Medical Systems Inc

A medical appliance or prosthesis may comprise one or more layers of electrospun nanofibers, including electrospun polymers. The electrospun material may comprise layers including layers of polytetrafluoroethylene (PTFE). Electrospun nanofiber mats of certain porosities may permit tissue ingrowth into or attachment to the prosthesis.

Подробнее
31-01-2019 дата публикации

PROSTHESIS

Номер: US20190029833A1
Автор: Briscoe Adam, Johns Ian
Принадлежит:

The invention relates to a femoral component () of a knee prosthesis. The component comprises a curved outer surface () for bearing against a tibial component. Said curved outer surface includes a posterior end and an anterior end. The curved outer surface includes an area (A) which extends from a first position closer to the posterior end to a second position closer to the anterior end, wherein said area (A) includes no parting line. 1. A femoral component of a knee prosthesis , said component comprising a curved outer surface for bearing against a tibial component , said curved outer surface including a posterior end and an anterior end , said curved outer surface includes an area (A) which extends from a first position closer to the posterior end to a second position closer to the anterior end , wherein said area (A) includes no parting line.2. A femoral component as claimed in claim 1 , wherein area (A) suitably is an area of said curved outer surface of said femoral component which has not been treated to remove or reduce any parting line.3. A femoral component as claimed in any one of the preceding claims claim 1 , wherein the shape of area (A) is preferably wholly defined by a tool surface used in its manufacture claim 1 , for example by a surface of an injection moulding tool.4. A femoral component as claimed in any one of the preceding claims claim 1 , wherein Area (A) is a wholly as-moulded surface.5. A femoral component as claimed in claim any one of the preceding claims claim 1 , wherein said femoral component includes said curved outer surface for bearing against a tibial component and a flexion/extension axis as described in ISO14243-1:2009(E) at 3.6 claim 1 , wherein Area (A) of said curved outer surface suitably subtends an angle (e.g. a maximum angle) of at least 150° with the flexion/extension axis.6. A femoral component as claimed in claim any one of the preceding claims claim 1 , wherein Area (A) suitably comprises an area of the curved outer ...

Подробнее
01-05-2014 дата публикации

IMPLANTABLE DEVICES WITH CORRODIBLE MATERIALS AND METHOD OF MAKING SAME

Номер: US20140120324A1
Автор: Cully Edward H.
Принадлежит: W. L. Gore & Associates, Inc.

The present disclosure describes implantable medical devices comprising at least one channel comprising a plurality of particles capable of undergoing a chemical reaction resulting in an increase in the rigidity of the channel. The medical device can be a stent, stent graft, occlusion bag, or other device configured. 1. An implantable medical device comprising:a polymeric sheet having at least one channel; anda plurality of corrodible particles located in the at least one channel.2. The device of wherein the plurality of particles are at least one of an iron alloy and a magnesium alloy.3. The device of claim 1 , wherein the plurality of particles are at least partially oxidized.4. The device of claim 3 , wherein the plurality of particles is a metallic powder.5. The device of claim 4 , wherein a volume of the corroded particles is greater than a volume of the plurality of particles prior to corrosion.6. The device of wherein the polymeric sheet comprises an expanded polytetrafluoroethylene.7. The device of wherein the polymeric sheet comprises a bioabsorbable polymer.8. The device of claim 1 , wherein the at least a portion of a channel comprises a permeable material.9. The device of claim 1 , wherein the polymeric sheet is configured as a tubular member that defines a lumen extending there through.10. The device of claim 1 , wherein the at least one channel defines a stent pattern.11. A method of making a polymeric graft comprising:providing a first tubular form and a second tubular form;disposing the first tubular form around the second tubular form;forming at least one channel between the first tubular form and the second tubular form; andplacing into the channel a plurality of corrodible particles.12. The method of claim 11 , wherein the at least one channel is formed by adhering discrete sections of the first tubular form to discrete sections of the second tubular form in a desired pattern of the at least one channel.13. The method of claim 11 , wherein the at ...

Подробнее
09-02-2017 дата публикации

IMPLANTS WITH ABSORBALBLE AND NON-ABSORBABLE FEATURES FOR THE TREATMENT OF FEMALE PELVIC CONDITIONS

Номер: US20170035542A1
Принадлежит:

Described are methods, devices, and systems related to implants for the treatment of a female pelvic condition. The implants include absorbable and non-absorbable materials and can be introduced into the pelvic area transvaginally. Meshes of the invention provide benefits relating to improved tissue integration into the mesh, reduced infection likelihood, improved patient comfort following implantation, or combinations of thereof. 119-. (canceled)20. An implant configured for transvaginal insertion into a female patient to treat a pelvic disorder or disease , the mesh comprising a non-absorbable mesh layer , and an absorbable material , wherein absorbable material comprises a bioactive agent selected from the group consisting of an antibiotic , antimicrobial , an inhibitor of epithelial cell activation and/or migration , and a compound that enhances wound regeneration , and the absorbable material is in the form of a coating on the non-absorbable mesh , an absorbable filament associated with the non-absorbable mesh , or a second layer associated with the non-absorbable mesh layer.21. The implant of wherein the bioactive agent is estrogen or estradiol22. The implant of further comprising another bioactive agent is selected from the group consisting of an antibiotic claim 21 , an antimicrobial claim 21 , an inhibitor of epithelial cell activation and/or migration claim 21 , epidermal grown factor (EGF) claim 21 , transforming growth factor a or β (TGF-α or β) claim 21 , vascular endothelial growth factor claim 21 , platelet derived growth factor claim 21 , and fibroblast growth factor.23. The implant of wherein the bioactive agent diffuses from or is released from the absorbable material upon its degradation.24. The implant of wherein the absorbable material comprises a hydroxyalkanoate polymer.25. The implant of wherein the absorbable material comprises polyhydroxybutyrate.26. The implant of comprising a second absorbable material.27. The implant of wherein the ...

Подробнее
11-02-2016 дата публикации

Methods and Devices For Three-Dimensional Printing Or Additive Manufacturing Of Bioactive Medical Devices

Номер: US20160038655A1
Принадлежит:

A method for manufacturing a bioactive implant including the steps of (a) forming a mixture of an bioactive agent and a setting agent capable of transitioning from a flowable state to a rigid state; (b) converting the mixture into a flowable state; and (c) transitioning the mixture into a solid state in a shape of the implant. 1. A method for manufacturing a bioactive implant comprising the steps of:a. forming a mixture of an bioactive agent with a polymer stock material;b. heating the mixture to an approximate meltflow temperature of the polymer stock material;c. forming the mixture into a shape of the implant.2. The method of claim 1 , wherein the step of forming the mixture into the shape of an implant comprises 3D printing of the mixture.3. The method of claim 1 , wherein the meltflow temperature does not substantially exceed a degradation temperature of the bioactive agent.4. The method of claim 3 , wherein the meltflow temperature is less than about 220° C.5. The method of claim 1 , wherein the polymer stock material is at least one from the group consisting of poly(methyl methacrylates) claim 1 , acrylonitrile butadiene styrene(s) claim 1 , polycarbonate(s) claim 1 , polylactides claim 1 , polyglycolides claim 1 , polycaprolactones claim 1 , polyanhydrides claim 1 , polyorthocarbonates claim 1 , polyvinylpyrrolidone and chitosan claim 1 , a linear polysaccharide.6. The method of claim 1 , wherein the bioactive agent is at least one from the group consisting of metals claim 1 , proteins claim 1 , peptides claim 1 , polypeptides claim 1 , sugars claim 1 , antimicrobials claim 1 , antiseptics claim 1 , chemo-therapeutics claim 1 , carbohydrates claim 1 , lipids claim 1 , hormones claim 1 , minerals claim 1 , vitamins claim 1 , and radioactive materials.7. The method of claim 1 , wherein the implant is at least one from the group consisting of catheters claim 1 , beads claim 1 , stents claim 1 , bone grafts claim 1 , IUDs claim 1 , pessaries claim 1 , meshes ...

Подробнее
09-02-2017 дата публикации

IMPLANTABLE GRAPHENE MEMBRANES WITH LOW CYTOTOXICITY

Номер: US20170035943A1
Принадлежит: LOCKHEED MARTIN CORPORATION

Two-dimensional materials can be formed into enclosures for various substances and a substrate layer can be provided on an outside and/or on an inside of the enclosure, wherein the enclosure is not cytotoxic. The enclosures can be exposed to an environment, such as a biological environment (in vivo or in vitro), where the fibrous layer can promote vascular ingrowth. One or more substances within the enclosure can be released into the environment, one or more selected substances from the environment can enter the enclosure, one or more selected substances from the environment can be prevented from entering the enclosure, one or more selected substances can be retained within the enclosure, or combinations thereof. The enclosure can, for example, allow a sense-response paradigm to be realized. The enclosure can, for example, provide immunoisolation for materials, such as living cells, retained therein. 1. An enclosure comprising a compartment and a wall separating the compartment from an environment external to the compartment , wherein the wall comprises:a perforated graphene-based material layer anda substrate layer affixed directly or indirectly to the perforated graphene-based material,and wherein the enclosure is not cytotoxic when implanted into a subject.2. The enclosure of claim 1 , wherein the substrate layer comprises track-etched polyimide.3. The enclosure of claim 1 , wherein the substrate layer comprises a fibrous layer comprising a plurality of polymer filaments.4. The enclosure of claim 1 , wherein the compartment is in fluid communication with the external environment.5. The enclosure of claim 1 , wherein at least a portion of the wall is from about 5 nm to about 1 μm thick.6. The enclosure of claim 1 , further comprising at least one substance encapsulated within the compartment.7. The enclosure of claim 6 , wherein two or more substances are encapsulated within the compartment.8. The enclosure of claim 6 , wherein the substance comprises one or more ...

Подробнее
08-02-2018 дата публикации

Device for Administration of Fluid Medicaments

Номер: US20180036480A1
Принадлежит:

A device for the administration of fluids to a human or animal body comprising a housing with a first inlet , at least one second inlet , one outlet and a collecting point, wherein the first inlet communicates with the collecting point through a first channel and the outlet communicates with the collecting point. The second inlet communicates with the collecting point or an indicator chamber through a second channel in which a valve is arranged, the valve being adjustable between a first position and a second position, wherein, in the first position of the valve , the second channel communicates with the indicator chamber and, in the second position of the valve , the second channel communicates with the collecting point. 123282930312831. Device () for the administration of fluids to a human or animal body , comprising a housing () with a first inlet () , at least one second inlet ( , ) , one outlet () and a collecting point , wherein the first inlet () communicates with the collecting point through a first channel and the outlet () communicates with the collecting point ,characterized in that{'b': 29', '30', '24', '25', '21', '22', '26', '27', '26', '27', '26', '27', '21', '22', '24', '25', '26', '27', '21', '22, 'the second inlet (, ) communicates with the collecting point or an indicator chamber (, ) through a second channel (, ) in which a valve (, ) is arranged, the valve (, ) being adjustable between a first position and a second position, wherein, in the first position of the valve (, ), the second channel (, ) communicates with the indicator chamber (, ), and, in the second position of the valve (, ), the second channel (, ) communicates with the collecting point.'}22. Device () according to claim 1 ,characterized in that{'b': 26', '27', '3, 'the indicator chamber (, ) and/or the housing () is at least in part transparent or translucent for visible electromagnetic radiation.'}32. Device () according to claim 1 ,characterized in that{'b': 24', '25', '60', '61 ...

Подробнее
08-02-2018 дата публикации

HOT MELT ADHESIVES AND USES THEREOF

Номер: US20180037777A1
Принадлежит:

The disclosure relates to adhesive compositions comprising a semi-crystalline olefin polymer or copolymer and a functional wax, functional olefin polymer, or mixture thereof. These compositions are useful as, for example, adhesives in disposable articles such as diapers, adult incontinence articles, underpads, personal care garments, and the like. 1. A stretch adhesive composition comprising: a heat of fusion (ΔHm) of between about 4 J/g and about 30 J/g;', {'sup': 8', '2', '9', '2, 'a storage modulus (E′) at 40° C. and 1 Hz of between about 3.0×10dyn/cmand about 1.7×10dyn/cm; and'}, 'a viscosity (η) at 200° C. of between about 2 Pa·s and about 100 Pa·s, preferably between about 2 Pa·s and about 20 Pa·s;, 'about 25 wt. % to about 75 wt. %, by weight of the stretch adhesive composition, of a semi-crystalline propylene polymer that is a homo-polymer or co-polymer characterized by'}between about 1 wt. % and about 10 wt. %, by weight of the stretch adhesive composition, of an adhesion promoter that is a functional wax, functional polyolefin, functional tackifier, functional plasticizer, or a mixture thereof; andbetween about 10 wt. % and about 55 wt. %, preferably about 20 wt. % and about 55 wt. %, by weight of the stretch adhesive composition, of a tackifier;wherein the stretch adhesive composition exhibits an initial creep resistance of about 35% or less and an aged creep resistance, after about 28 days at about 40° C., of about 35% or less.2. The stretch adhesive composition of claim 1 , wherein the semi-crystalline propylene polymer is a homo-polymer.3. The stretch adhesive composition of claim 1 , wherein the semi-crystalline propylene polymer is a co-polymer.4. The stretch adhesive composition of claim 1 , wherein the heat of fusion of the semi-crystalline propylene polymer is between 4 J/g and 6 J/g.5. The stretch adhesive composition of claim 1 , wherein the heat of fusion of the semi-crystalline propylene polymer is between 20 J/g and 24 J/g.6. The stretch ...

Подробнее
24-02-2022 дата публикации

Devices and methods for occlusion of an atrial appendage

Номер: US20220054143A1
Принадлежит: WL Gore and Associates Inc

Various aspects of the present disclosure are directed toward apparatuses, methods, and systems as relating to occlusion. In certain instances, the apparatuses, methods, and systems may include a device for placement in vessels, appendages, and openings in a body. The device may include a unitary frame having a face portion that includes a center frame portion a plurality of elongate members.

Подробнее
07-02-2019 дата публикации

Methods And Compositions For The Treatment Of Open And Closed Wound Spinal Cord Injuries

Номер: US20190038808A1
Принадлежит:

Devices and methods for the treatment of open and closed wound spinal cord injuries are disclosed. For example, described herein are devices and methods for mitigating secondary injury to, and promoting recovery of, spinal cord primary injuries. More particularly, certain embodiments of the present invention are directed to polymeric mini-tubes that may be used for the treatment of spinal cord injuries. In addition, other embodiments are directed to polymeric “fill-in” bandages that may be used for the treatment of spinal cord injuries. For example, an erodible, or biodegradable, form of biocompatible polymer of the present invention is fabricated for surgical implantation into the site of the spinal cord injury. 145-. (canceled)46. A method of treating a compression and/or contusion spinal cord injury in an animal comprising the steps of:(a) providing a suitably sized biodegradable and/or bioabsorbable polymeric article for implanting within a necrotic lesion of the spinal cord parenchyma tissue, wherein the polymeric article comprises a single layer scaffold; and(b) implanting the polymeric article within the lesion to bridge a gap in the spinal cord parenchymal tissue formed by said lesion wherein once implanted said polymeric article is not exposed to the environment outside the spinal cord.47. The method of claim 46 , wherein said polymeric article comprises a single layer linear aliphatic polyester scaffold.48. The method of claim 47 , wherein the linear aliphatic polyester is a polyglycolide or a co-polymer of poly(glycolide-co-lactide).49. The method of claim 46 , wherein the polymeric article degrades in vivo in 30 to 60 days.50. The method of claim 46 , wherein the polymeric article is a cylinder.51. The method of claim 46 , wherein the polymeric article is moldable.52. The method of claim 46 , wherein the polymeric article is tubular.53. The method of claim 46 , wherein the polymeric article further comprises one or more medicinal agents deposited onto ...

Подробнее
12-02-2015 дата публикации

MARKED FLUOROPOLYMER SURFACES AND METHOD OF MANUFACTURING SAME

Номер: US20150044408A1
Принадлежит:

A method of manufacturing a coated low-friction medical device, such as low-friction medical tubing, including applying a coating to one or more selected portions of a surface of low-friction medical tubing to indicate at least one marking formed along the surface of the low-friction medical tubing, and simultaneously or substantially simultaneously: (a) curing the applied coating to a designated temperature (which is above the temperature at which the low-friction medical tubing begins to decompose and shrink) to adhere the applied coating to the surface of the low-friction medical tubing, (b) utilizing one or more anti-shrinking devices to counteract or otherwise inhibit the shrinking of the low-friction medical tubing, and (c) exhausting any harmful byproducts resulting from curing the low-friction medical tubing to a temperate above the temperature at which the low-friction medical tubing begins to decompose. 1. A method of manufacturing a coated polytetrafluroethylene tube , said method comprising:(a) applying a designated amount of a coating to an outer surface of a section of a body of the polytetrafluroethylene tube, said section of the body of the polytetrafluroethylene tube having a first outer diameter, said coating including: (i) a first pigment of a first color, and (ii) a binder; and(b) curing the applied coating to cause the coating to bond to the outer surface of the section of the body of the polytetrafluroethylene tube to indicate at least one marking formed along the body of the polytetrafluroethylene tube, wherein the curing causes the section of the body of the polytetrafluroethylene tube to shrink such that after curing, the section of the body of the polytetrafluroethylene tube has a second outer diameter less than the first outer diameter and the section of the body of the polytetrafluroethylene tube with the cured coating has a third outer diameter approximately equal to the first outer diameter.2. The method of claim 1 , wherein the binder ...

Подробнее
18-02-2021 дата публикации

IMPLANTABLE POLYMERIC DEVICE FOR SUSTAINED RELEASE OF BUPRENORPHINE

Номер: US20210046000A1
Принадлежит:

The present invention provides compositions, methods, and kits for treatment of opiate addiction and pain. The invention provides a biocompatible nonerodible polymeric device which releases buprenorphine continuously with generally linear release kinetics for extended periods of time. Buprenorphine is released through pores that open to the surface of the polymeric matrix in which it is encapsulated. The device may be administered subcutaneously to an individual in need of continuous treatment with buprenorphine. 128-. (canceled)29. A method for treatment of pain , comprising administering at least one implantable device subcutaneously , said implantable device comprising buprenorphine and a biocompatible , nonerodible polymeric matrix , wherein said buprenorphine is encapsulated within said matrix ,wherein said at least one implantable devices continuously releases buprenorphine in vivo over a sustained period of time through pores that open to the surface of said matrix at a steady state rate of about 0.1 to about 5 mg per day.30. A method according to claim 29 , wherein said at least one implantable device comprises a multiplicity of individual implantable devices claim 29 , and wherein the combination of said implantable devices continuously releases buprenorphine in vivo over a sustained period of time at a steady state rate of about 0.1 to about 5 mg per day.31. A method according to claim 29 , wherein each of said at least one implantable devices is subcutaneously implanted at a site selected from the group consisting of the upper arm claim 29 , the back claim 29 , and the abdomen.32. A method according to claim 29 , wherein each of said at least one implantable devices comprises EVA.33. A method according to claim 32 , wherein each of said at least one implantable devices comprises about 10 to about 85% buprenorphine.34. A method according to claim 29 , wherein said sustained period of time is at least about 3 months.35. (canceled)36. A kit for use in ...

Подробнее
12-02-2015 дата публикации

Articles Including Expanded Polytetrafluoroethylene Membranes with Serpentine Fibrils and Having a Discontinuous Fluoropolymer Layer Thereon

Номер: US20150045873A1
Принадлежит:

Articles comprising an expanded polytetrafluoroethylene membrane having serpentine fibrils and having a discontinuous coating of a fluoropolymer thereon are provided. The fluoropolymer may be located at least partially in the pores of the expanded fluoropolymer membrane. In exemplary embodiments, the fluoropolymer is fluorinated ethylene propylene. The application of a tensile force at least partially straightens the serpentine fibrils, thereby elongating the article. The expanded polytetrafluoroethylene membrane may include a microstructure of substantially only fibrils. The articles can be elongated to a predetermined point at which further elongation is inhibited by a dramatic increase in stiffness. In one embodiment, the articles are used to form a covered stent device that requires little force to distend in the radial direction to a first diameter but is highly resistant to further distension to a second diameter (stop point). A large increase in diameter can advantageously be achieved prior to reaching the stop point. 127-. (canceled)28. A stent graft comprising:a stent having a wall with at least one opening, an exterior surface, and an interior surface; anda wrinkle-free cover affixed to said stent, said cover comprising a composite material including an expanded fluoropolymer membrane having serpentine fibrils and a discontinuous coating of a fluoropolymer thereon,wherein said composite material at least partially covers at least one of the interior and exterior surfaces of said stent.29. The stent graft of claim 28 , wherein each said serpentine fibril has a width of about 1.0 micron or less.30. The stent graft of claim 29 , wherein each said serpentine fibril has a width of 0.5 microns or less.31. The stent graft of claim 28 , wherein the expanded fluoropolymer membrane comprises pores and the fluoropolymer at least partially penetrates a plurality of said pores.32. The stent graft of claim 28 , wherein said stent is extended to a first diameter at a ...

Подробнее
16-02-2017 дата публикации

Implantable product with improved aqueous interface characteristics and method for making and using same

Номер: US20170042705A1
Принадлежит: WL Gore and Associates Inc

An implantable medical device including a porous membrane that is treated with a hydrophilic substance to obtain rapid optimum visualization using technology for viewing inside of a mammalian body. These technologies include ultrasound echocardiography and video imaging such as that used during laparoscopic procedures.

Подробнее
15-02-2018 дата публикации

Macroinitiators for hydrophilic coatings on latex and applications thereof

Номер: US20180043066A1

Provided herein are methods comprising the use of a macroinitiator and application protocols to apply a hydrophilic coating to latex, or natural rubber, and compositions resulting from such methods. This coating results in e.g., an increased sense of lubrication when in contact with water or an aqueous solution.

Подробнее
16-02-2017 дата публикации

POLYMER COATING COMPRISING 2-METHOXYETHYL ACRYLATE UNITS SYNTHESIZED BY SURFACE-INITIATED ATOM TRANSFER RADICAL POLYMERIZATION

Номер: US20170044392A1
Принадлежит:

The present invention relates to preparation of a polymer coating comprising or consisting of polymer chains comprising or consisting of units of 2-methoxyethyl acrylate synthesized by Surface-Initiated Atom Transfer Radical Polymerization (SIATRP) such as ARGET SIATRP or AGET SIATRP and uses of said polymer coating. 115.-. (canceled)16. A polymer coating comprising polymer chains consisting of repeating units of 2-methoxyethyl acrylate (MEA) , wherein said polymer chains are straight and covalently bound to a surface of one or more polymer substrate(s) via one or more covalent bonds at an end of each of the straight polymer chains.17. The polymer coating of claim 16 , wherein the straight polymer chains are bound to the surface via initiator groups covalently bound to the polymer substrate.18. The polymer coating of claim 17 , wherein the initiator groups are alkyl halide initiators.19. The polymer coating according to claim 16 , wherein the polymer coating is obtained or obtainable by Surface Initiated Atom Transfer Radical Polymerization (SI ATRP) claim 16 , reverse ATRP claim 16 , Simultaneous Reverse and Normal Initiation (SR and NI) ATRP claim 16 , Initiators for Continuous Activator Regeneration (ICAR) ATRP claim 16 , Activators Generated by Electron Transfer (AGET) ATRP claim 16 , or Activator Regenerated by Electron Transfer (ARGET) ATRP.20. The polymer coating according to claim 16 , wherein said straight polymer chains comprises at least 5 MEA units.21. The polymer according to claim 16 , wherein at least 50% of the straight polymer chains comprise at least 5 MEA units.22. The polymer coating according to claim 16 , wherein the substrate is selected from the group consisting of Poly(ether ether ketone) (PEEK) claim 16 , Polypropylene (PP) claim 16 , Polyethylene (PE) (including linear low density polyethylene (LLDPE) claim 16 , low density polyethylene (LDPE) high density polyethylene (HDPE) claim 16 , ultra high molecular weight polyethylene (UHMWPE) ...

Подробнее
03-03-2022 дата публикации

DRUG ELUTING DEVICE AND PREPARATION METHOD THEREOF

Номер: US20220062015A1
Принадлежит: BIOTYX MEDICAL (SHENZHEN) CO., LTD.

A drug eluting device and a preparation method thereof are disclosed. The drug eluting device includes a substrate and a drug coating arranged on the substrate. The substrate has an outer wall, side walls, and an inner wall, the drug coating contains active drug and a drug carrier, the active drug is dispersed in the drug carrier, the drug coating covers the outer wall, the side walls, and the inner wall of the substrate, and the content of the active drug on both the outer wall and the side walls are greater than the content of the active drug on the inner wall; or, the active drug is only distributed on the outer wall and the side walls, and the inner wall does not contain the active drug. The drug eluting device is less prone to coating peeling off from the substrate.

Подробнее
19-02-2015 дата публикации

Polymeric composite materials with antimicrobial and biodegradable properties and uses thereof

Номер: US20150050234A1

A composite material for the production of a medical device having an antiseptic action includes a matrix of alginate in which the complex of iodopovidone is dispersed. The composite material is used particularly for the production of films, micro-capsules, and suture threads with iodine controlled release.

Подробнее
19-02-2015 дата публикации

Torque Alleviating Intra-Airway Lung Volume Reduction Compressive Implant Structures

Номер: US20150051709A1
Принадлежит: PneumRx, Inc.

A device for enhancing the breathing efficiency of a patient is provided. The implantable device may include a deployed configuration with one or more helical sections with proximal end in a stand-off proximal end configuration. The stand-off proximal end configuration may reduce migration of the deployed device and may preserve implant tissue compression. Alternative configurations may include two or more helical sections with a transition section disposed between the two or more helical sections. A device may include a right-handed helical section and a left-handed helical section and the transition section comprises a switchback transition section. The switchback section may provide greater control of the device during deployment by limiting recoiling forces of a device comprising a spring material. The deployed device may compress the lung to increase a gas filling resistance of the compressed portion of the lung, and/or increase tension and elastic recoil in other portions of the lung. 1. A lung volume reduction system for enhancing a breathing efficiency of a patient with an airway , the system comprising:an implantable device configured to impart a compression force on lung tissue, the implantable device including a proximal end and a distal end and further having a first configuration and a second configuration, the second configuration of the implantable device corresponding to a configuration of the implantable device pre-implantation or post-implantation, the second configuration comprises at least two helical sections with a transition section disposed between the at least two helical sections.2. The lung volume reduction system of claim 1 , wherein the at least two helical sections comprise a right-handed helical section and a left-handed helical section and wherein the transition section disposed between the at least two helical sections comprises a switchback transition section when the implantable device is in the second configuration.3. The lung ...

Подробнее
14-02-2019 дата публикации

PARTIALLY DEGRADABLE STENTS FOR CONTROLLED REDUCTION OF INTRAOCULAR PRESSURE

Номер: US20190046696A1
Принадлежит:

Partially degradable stents formed of electrospun polymeric fibers have been developed. The lumen of the stent enlarges as the degradable polymeric inner luminal wall of the stents degrades over. When inserted in the eye of a subject connecting anterior chamber to the subconjunctival space, the stents allows for controlled outflow of aqueous humor, providing controlled of the rate of change in the intraocular pressure (TOP) and sustained decrease of TOP to treat eye disorders such as glaucoma. Methods of making these fibers via electrospinning and heat processing, as well as their uses in medical applications, are also provided. 1. A device comprising a wall surrounding a lumen , wherein the wall comprisesa first, degradable polymer, forming the luminal surface of the wall,and a second, slower degradable or non-degradable polymer, compared to the first degradable polymer, forming the exterior surface of the wall,wherein the lumen enlarges over time as the first degradable polymer degrades.2. The device of claim 1 , wherein the first degradable polymer claim 1 , the second slower degradable or non-degradable polymer claim 1 , or both claim 1 , are in the form of nanofibers claim 1 , microfibers claim 1 , or both.3. The device of claim 1 , comprising a coating on the exterior surface of the wall.4. The device of claim 1 , further comprising one or more therapeutic claim 1 , prophylactic claim 1 , or diagnostic agent.5. The device of claim 1 , wherein the nanofibers or microfibers are aligned claim 1 , hardened claim 1 , or both by heating at a temperature greater than the glass transition temperature of the polymer.6. The device of claim 1 , wherein the first polymer degrades over a time period between about 2 days and about 100 days in vivo.7. The device of claim 1 , wherein the lumen has an averaged overall diameter between about 40 μm and about 100 μm claim 1 , preferably between about 50 μm to about 80 μm claim 1 , and more preferably of about 50 μm claim 1 , ...

Подробнее
14-02-2019 дата публикации

MULTI-MATERIAL STRETCHABLE OPTICAL, ELECTRONIC AND OPTOELECTRONIC FIBERS AND RIBBONS COMPOSITES VIA THERMAL DRAWING

Номер: US20190047240A1
Принадлежит:

The present invention concerns a thermal drawing method for forming fibers, wherein said fibers are made at least from a stretchable polymer. The present invention also concerns drawn fibers made by the process. 126-. (canceled)27. A thermal drawing method for forming a fiber comprising the steps of:providing a preform of a material for the fiber;heating the material such that the preform necks down under its own weight and produces a lower end; andcontinuously drawing a fiber from the lower end of the preform,wherein the material includes a stretchable polymer that is an elastomer.28. The method as defined in claim 27 , wherein the step of continuously drawing includes co-drawing the fiber with another material.29. The method as defined in claim 27 , further comprising the step of:providing an additional element to the fiber, the additional element including at least one of a metallic electrode made of a conductive medium, a semiconducting material, an insulating material, and optical material, and a functional material.30. The method as defined in claim 27 , further comprising the steps of:inserting a thin metallic wire in a channel of the fiber to form an embedded electrode; andencapsulating a connection with the embedded electrode by an adhesive to improve mechanical resistance of the connection.31. The method as defined in claim 27 , wherein the material of the preform further includes nanoscale objects to bring functionality to the material.32. The method as defined in claim 31 , wherein the nanoscale objects include at least one of nanoparticles and nanotubes.33. A fiber claim 31 , which is drawn from a heated preform of a material claim 31 , the material used for the fiber comprising:a stretchable polymer that is an elastomer.34. The fiber as defined in claim 33 , wherein the material forms a cladding that includes nanoscale objects to bring functionality to the material.35. The fiber as defined in claim 34 , wherein the nanoscale objects include at least ...

Подробнее
13-02-2020 дата публикации

Slow Blood Vessel Occlusion Apparatus

Номер: US20200046358A1
Автор: Rizzolo Richard A.
Принадлежит:

A method for occluding a blood vessel has steps for encasing a semi-rigid, circular plastic ring, open at one point, in silicon material, forming a bladder along an inside diameter of the silicon material, placing a mixture of sodium and potassium salts and polyacrylamide granules in the bladder, closing and sealing the bladder, forming a pair of opposed stirrups on an outside diameter of the silicon material, spreading the encased plastic ring by the stirrups accomplishing an opening through the ring of an extent enabling the ring to be placed over a blood vessel, placing the encased plastic ring over the blood vessel, releasing the stirrup, allowing the ring and bladder to close around the blood vessel, such that the bladder, constrained by the ring from expanding outward, absorbing moisture by osmosis over time, expands inward, and over a time t fully occludes the blood vessel. 1. A method for occluding a blood vessel , comprising steps of:encasing a semi-rigid, circular plastic ring, open at one point of a circumference, in silicon material;forming a bladder along an inside diameter of the silicon material encasing the plastic ring;placing a mixture of sodium and potassium salts and polyacrylamide granules in the bladder, and closing and sealing the bladder;forming a pair of opposed stirrups on an outside diameter of the silicon material encasing the plastic ring;spreading the encased plastic ring by the stirrups to an extent that an opening is accomplished through the ring of an extent enabling the ring to be placed over a blood vessel to be occluded;placing the encased plastic ring over the blood vessel;releasing the stirrup, allowing the ring and bladder to close around the blood vessel, such that the bladder, constrained by the ring from expanding outward, absorbing moisture by osmosis over time, expands inward, and over a time t fully occludes the blood vessel.2. The method of wherein the ratio amounts of materials in the silicone bladder change time t.3. ...

Подробнее
13-02-2020 дата публикации

DENTAL CORD USING NANOFIBER CONJUGATE YARN, AND MANUFACTURING METHOD THEREFOR

Номер: US20200046472A1
Принадлежит:

Provided is a method of manufacturing a dental cord. The method including: producing a spinning solution by dissolving a fiber-moldable hydrophobic polymer material in a solvent; spinning the spinning solution to obtain a polymer nanofiber web composed of nanofibers and including three-dimensional micropores; laminating the polymer nanofiber web to obtain a polymer membrane; slitting the polymer membrane to obtain a nanofiber tape yarn; hydrophilic-treating the nanofiber tape yarn to obtain a hydrophilic-treated nanofiber tape yarn; plying and twisting the hydrophilic-treated nanofiber tape yarn with a covered yarn to obtain a nanofiber multiple yarn; and impregnating the nanofiber multiple yarn with a hemostatic agent. 1. A method of manufacturing a dental cord , the method comprising:producing a spinning solution by dissolving a fiber-moldable hydrophobic polymer material in a solvent;spinning the spinning solution to obtain a polymer nanofiber web composed of nanofibers and including three-dimensional micropores;laminating the polymer nanofiber web to obtain a polymer membrane;slitting the polymer membrane to obtain a nanofiber tape yarn;hydrophilic-treating the nanofiber tape yarn to obtain a hydrophilic-treated nanofiber tape yarn;plying and twisting the hydrophilic-treated nanofiber tape yarn with a covered yarn to obtain a nanofiber multiple yarn; andimpregnating the nanofiber multiple yarn with a hemostatic agent.2. The method of claim 1 , further comprising: thermally stretching the nanofiber multiple yarn between a glass transition temperature (Tg) and a melting temperature (Tm) of the fiber-moldable hydrophobic polymer material.3. The method of claim 1 , wherein the slitting comprises: slitting the polymer membrane to obtain the nanofiber tape yarn having a width of 0.1 mm to 10 mm.4. The method of claim 1 , wherein the nanofiber tape yarn comprises: at least two nanofiber tape yarns.5. The method of claim 1 , wherein claim 1 , in the nanofiber multiple ...

Подробнее
25-02-2021 дата публикации

CELL ADHESIVE MATERIAL

Номер: US20210054333A1
Принадлежит: Toray Industries, Inc.

A cell adhesive substrate comprising a substratum, on a surface of which a peptide group is immobilized, wherein the peptide group comprises a peptide containing 40% or more and 75% or less of one or two or more of basic amino acid residues selected from the group consisting of lysine, arginine and histidine and 25% or more of one or two or more of hydrophobic amino acid residues selected from the group consisting of leucine, isoleucine, glycine, alanine, valine, phenylalanine, proline, tryptophan and methionine. There is provided a cell adhesive substrate that is unlikely to cause an immune reaction and can maintain a cell adhesion effect for a long time. 1. A cell adhesive substrate comprising a substratum , on a surface of which a peptide group is immobilized , wherein the peptide group comprises a peptide containing 40% or more and 75% or less of one or two or more of basic amino acid residues selected from the group consisting of lysine , arginine and histidine and 25% or more of one or two or more of hydrophobic amino acid residues selected from the group consisting of leucine , isoleucine , glycine , alanine , valine , phenylalanine , proline , tryptophan and methionine.2. The cell adhesive substrate according to claim 1 , wherein the peptide group consists of peptides without an ordered amino acid sequence.3. The cell adhesive substrate according to claim 1 , wherein the peptide group is a set of peptides consisting of the basic amino acid residues and the hydrophobic amino acid residues.4. The cell adhesive substrate according to claim 1 , wherein the peptide group contains 40% or more and 75% or less of lysine or arginine residues claim 1 , and contains 25% or more of any of phenylalanine claim 1 , leucine and valine residues.5. The cell adhesive substrate according to claim 1 , wherein an immobilization density of the peptide group on the surface of the substratum is 0.040 μg/cmor more.6. The cell adhesive substrate according to claim 1 , wherein the ...

Подробнее
03-03-2016 дата публикации

Gastrointestinal Device With Associated Microbe-Promoting Agents

Номер: US20160058593A1
Принадлежит:

A gastrointestinal device and methods of manufacturing said gastrointestinal device are described and include a flexible tubular structure including a layered wall, the flexible tubular structure including at least one microbe-promoting agent encased in the layered wall, the microbe-promoting agent configured to promote at least one of attraction, colonization, and growth of at least one type of commensal microbe, and a proximal end and a distal end, the proximal end and the distal end forming a flow conduit through the flexible tubular structure; and at least one anchor structure including one or more gastric wall-engaging components configured to engage a wall of the gastrointestinal tract of the subject. 1. A gastrointestinal device comprising: an inner surface and an outer surface;', 'at least one microbe-promoting agent associated with at least one of the inner surface and the outer surface, the at least one microbe-promoting agent configured to promote at least one of attraction, colonization, and growth of at least one type of commensal microbe; and', 'a proximal end and a distal end, the proximal end and the distal end forming a flow conduit through the flexible tubular structure; and, 'a flexible tubular structure including'}at least one anchor structure including one or more gastric wall-engaging components configured to engage a wall of the gastrointestinal tract of a subject.2. The device of claim 1 , wherein the flexible tubular structure is sized for placement in a portion of the gastrointestinal tract of the subject.3. The device of claim 1 , wherein the flexible tubular structure is a sleeve claim 1 , a liner claim 1 , or a stent.46.-. (canceled)7. The device of claim 1 , wherein the flexible tubular structure is formed from a semi-permeable material.814.-. (canceled)15. The device of claim 1 , wherein the flexible tubular structure is noncontiguous.16. The device of claim 1 , wherein at least a portion of the flexible tubular structure is degradable ...

Подробнее
21-02-2019 дата публикации

SYSTEMS AND METHODS FOR AUTOMATED IMAGE RECOGNITION OF IMPLANTS AND COMPOSITIONS WITH LONG-LASTING ECHOGENICITY

Номер: US20190053790A1
Принадлежит:

Systems and methods for imaging an object that are capable of capturing an image or images of the object using an imaging modality, automatically detecting and analyzing the image or images by way of converting the image or images to at least one binary image, and analyzing the at least one binary image to extract and/or segment regions-of-interest (ROIs) from the at least one binary image. The object can be or include an implantation, occlusion, medical device, body lumen, tissue, organ, duct, and/or vessel. The imaging modality can be or include X-ray, CT, MRI, PET, and/or ultrasound, or any combination thereof. Also included are compositions of soft, implantable materials with one or more carbon-based material, nanomaterial, and/or allotrope present in an amount sufficient as an ultrasound contrast agent effective for days, months, or years and which compositions are useful in the automated imaging methods of the invention. 1. An imaging method comprising:capturing an image or images of an object using an imaging modality; converting the image or images to at least one binary image, and', 'analyzing the at least one binary image to extract and/or segment one or more regions-of-interest (ROIs) from the at least one binary image., 'automatically analyzing the image or images using a computer processor by2. An imaging method comprising:(a) capturing one or more images using ultrasound; converting the one or more images to at least one binary image;', 'identifying from the at least one binary image a plurality of regions-of-interest (ROIs) that may relate to one or more implants, occlusions and/or medical devices;', 'optionally improving quality of data encompassed by one or more of the ROIs by applying one or more morphological techniques to at least one of the binary images;', 'evaluating the plurality of ROIs to identify one or more probable ROI candidates according to which of the plurality of ROIs most likely represent the one or more implants, occlusions and/or ...

Подробнее
03-03-2016 дата публикации

Gastrointestinal Device With Associated Microbe-Promoting Agents

Номер: US20160058914A1
Принадлежит: ELWHA LLC

A gastrointestinal device and methods of manufacturing said gastrointestinal device are described and include a flexible tubular structure including an inner surface and an outer surface, at least one microbe-promoting agent associated with at least one of the inner surface and the outer surface, the at least one microbe-promoting agent configured to promote attraction, colonization, and growth of at least one type of commensal microbe, and a proximal end and a distal end, the proximal end and the distal end forming a flow conduit through the flexible tubular structure; and at least one anchor structure including one or more gastric wall-engaging components configured to engage a wall of the gastrointestinal tract of the subject.

Подробнее
21-02-2019 дата публикации

ARTIFICIAL CORNEAL STENT, AND ARTIFICIAL CORNEAL STROMA AND METHOD OF MAKING THE SAME

Номер: US20190054215A1
Автор: CHIEN HSIU-WEN
Принадлежит:

An artificial corneal stroma comprises a hydrogel substrate supported by artificial stents. At least one surface comprises a plurality of nanosize structures. The hydrogel substrate is formed from an artificial corneal stroma material. The artificial corneal stroma material comprises a methacrylate-bonded hyaluronic acid, a collagen, and a photoinitiator. 1. An artificial corneal stroma comprising:a hydrogel substrate, the hydrogel substrate having at least one surface comprising a plurality of nanosize structures;wherein the hydrogel substrate is formed by an artificial corneal stroma material, the artificial corneal stroma material comprises a methacrylate-bonded hyaluronic acid, a collagen, and a photoinitiator.2. The artificial corneal stroma of claim 1 , wherein the plurality of nanosize structures comprises columnar structures claim 1 , the axis of at least one of the plurality of nanosize structures is perpendicular to the at least one surface of the artificial corneal stroma.3. The artificial corneal stroma of claim 2 , wherein at least one of the plurality of nanosize structures has a diameter in a range of 50 nanometers to 500 nanometers claim 2 , and a height in a range of 5 nanometers to 500 nanometers claim 2 , a distance between two adjacent ones of the plurality of nanosize structures is 50 nanometers to 500 nanometers.4. The artificial corneal stroma of claim 1 , wherein the plurality of nanosize structures are strip-shaped claim 1 , at least two of the plurality of nanosize structures are parallel.5. The artificial corneal stroma of claim 4 , wherein at least one of the plurality of the nanosize structures has a width in a range of 50 nanometers to 500 nanometers claim 4 , and a height in a range of 5 nanometers to 500 nanometers claim 4 , and a distance between two adjacent ones of the plurality of nanosize structures is in a range of 50 nanometers to 500 nanometers.6. The artificial corneal stroma of claim 1 , wherein a ratio of molecular ...

Подробнее
02-03-2017 дата публикации

Surgical adjuncts with medicants affected by activator materials

Номер: US20170055992A1
Принадлежит: Ethicon LLC

Various exemplary surgical adjuncts with medicants affected by activator materials are provided. In general, an adjunct is provided with at least one medicant that is configured to be activated by an activator material. The adjunct can be delivered to a tissue of a patient, where the adjunct can be implanted. Various activator materials can be configured to activate the at least one medicant retained by the adjunct, the activation causing any one or more of a variety of actions. For example, the at least one medicant can be activated so as to yield at least one of a signal and/or an effect on the adjunct.

Подробнее
01-03-2018 дата публикации

BIOABSORBABLE POLYMERIC COMPOSITION AND MEDICAL DEVICE

Номер: US20180056569A1
Принадлежит:

A method for fabricating an embodiment of a medical device comprising the steps of: preparing a biodegradable polymeric structure; coating the biodegradable polymeric structure with a polymeric coat including a pharmacological or biological agent; cutting the structure into patterns configured to allow for crimping of the cut structure and expansion of the cut structure after crimping into a deployed configuration. 1. A method for making a bioabsorbable polymeric implant comprising:(a) blending a composition comprising a base polymer of poly L-lactide or poly D-lactide linked with modifying copolymers comprising poly L(or D)-lactide-co-Tri-methylene-carbonate or poly L(or D)-lactide-co-ε-caprolactone in the form of block copolymers or as blocky random copolymers wherein the lactide chain length is sufficiently long enough to allow cross-moiety crystallization to form a polymer composition;(b) allowing said polymer composition to solidify to forming a desired mass; and(c) cutting said mass to form a configured implant.2. The method of claim I wherein in step (a) the blending further entails blending a pharmacological and/or biological agent and/or radioopaque or radio-detectable material into the polymer composition.3. A method in accord with claim I further comprising after step (a) the step of (a′) extruding said polymer composition.4. A method in accord with further comprising after or concurrent with step (a′) claim 3 , the step of: (a″) molding or casting said extruded polymer composition to form a molded polymer composition.5. A method in accord with claim I wherein said desired mass claim 3 , is selected from the group consisting of: a sheet claim 3 , a tube claim 3 , a rod claim 3 , and a block claim 3 ,6. A method in accord with further comprising a step after step (b) of: (b″) spraying said solidified mass with a spray composition.7. A method in accord with wherein the spray composition of step (b″) comprises a biological or pharmacological agent.8. A ...

Подробнее
20-02-2020 дата публикации

RADIOPAQUE POLYMERS WITH ENHANCED RADIOPACITY

Номер: US20200054770A1
Принадлежит: EndoShape, Inc.

Radiopaque polymer compositions and methods for making the compositions are provided. These radiopaque polymer compositions include polymer compositions comprising a crosslinked polymer network, the network comprising a first repeating unit derived from a monofunctional monomer, a second repeating unit derived from a crosslinker monomer having more than two poly-merizable groups and a third repeating unit a derived from a crosslinker monomer having two or more polymerizable groups. Devices formed from radiopaque polymer compositions and methods for synthesizing radiopaque polymer compositions are also provided. 2. The crosslinked polymer network of claim 1 , wherein Aris an iodine containing Caryl group with 3 to 5 iodine atoms attached directly to the ring.3. The crosslinked polymer network of claim 1 , wherein Ris a C-Calkylene group.5. The crosslinked polymer network of claim 4 , wherein r is an integer selected from the range of 3 to 8.6. (canceled)8. The crosslinked polymer network of claim 7 , wherein:{'sup': '10', 'Ris O;'}{'sup': 9', '10, 'each Tand each Tare (meth)acrylate; and'}w and v are each independently integers from 1 to 6.11. The crosslinked polymer network of claim 1 , wherein said crosslinked polymer network has greater than or equal to 15 wt % of said first reagent claim 1 , said crosslinked polymer network has less than or equal to 85 wt % of said second reagent claim 1 , said crosslinked polymer network has less than or equal to 85 wt % of said third reagent claim 1 , or a combination thereof.12. (canceled)13. (canceled)14. The crosslinked polymer network of claim 1 , wherein said crosslinked polymer network comprises between 80 to 90 wt % of said first reagent claim 1 , 1 to 10 wt % of said second reagent and 5 to 15 wt % of said third reagent.15. A radiopaque polymer device for medical application claim 1 , said device or a device feature comprising a polymer composition according to claim 1 , optionally comprising a fiber claim 1 , a coil or ...

Подробнее
20-02-2020 дата публикации

Medical Delivery Devices Having Low Lubricant Syringe Barrels

Номер: US20200054834A1
Принадлежит:

The present disclosure relates to medical delivery devices that include a barrel having an inner surface, and in at least one embodiment, the inner surface is hydrophilic. The medical delivery device may further include a stopper may having an elastomeric body, one or more fluoropolymer layers, and two or more ribs laminated to the one or more fluoropolymer layers. In some embodiments, the contact angle of the inner surface of the barrel is less than about 58°. Additionally, the stopper includes a sliding surface that is less than about 2.0 mm. The barrel provides inner surface that in combination with the fluoropolymer laminate or fluoropolymer film achieve high levels of air and liquid impermeability while also maintaining an acceptably low break loose force, low average glide force, and low glide force variation. In some embodiments, the compressibility stopper against the barrel is greater than about 7.9%. 118.-. (canceled)19. A medical delivery device comprising:a barrel having a first end, a second end, and an inner surface;a stopper positioned within the barrel and contacting at least a portion of the inner surface of the barrel, the stopper having a compressibility of greater than 7.9% when measured against the barrel, said stopper including two or more ribs, each rib having a compressibility of greater than 7.9% and providing a contact width (w) with the inner surface of the barrel in a compressed state; andan injection member coupled to the barrel to displace said stopper,wherein the stopper comprises an elastomeric body and the elastomeric body is at least partially covered with one or more fluoropolymer layers,wherein the inner surface of the barrel has a water contact angle between about 1° and about 58°, andwherein the stopper has a glide force variation less than about 1.3 N when calculated according to the Glide Force Variation test method.20. (canceled)21. The medical delivery device of claim 19 , wherein an elution rate of drug through the medical ...

Подробнее
28-02-2019 дата публикации

HYDROGEL CONDOM

Номер: US20190060530A1
Принадлежит: The Texas A&M University System

A hydrogel condom containing an antioxidant can provide increased sexual pleasure, thus improving usage and resulting in prevention of disease and prevention of unwanted pregnancies. 1. A condom comprising a hydrogel and an antioxidant.2. The condom of wherein the ratio of the water/polymer is 86%/14% (w/w).3. The condom of wherein the antioxidant is quercetin.4. The condom of wherein the hydrogel comprises cross-linked multi-networks.5. The condom of wherein the hydrogel comprises sulfated beta-cyclodextrin claim 1 , polyacrylamide claim 1 , and alginate.6. The condom of wherein the hydrogel is comprised of ionic bonds and covalent bonds.7. The condom of wherein the ionic bonds are 1) sulfated beta cyclodextrin with high negatively charge density and positively charge polyacrylamide and 2) calcium ion and alginate.8. The condom of wherein the covalent bonds are 1) covalent crosslinks between polyacrylamide chains by N claim 6 , N-methylenebisacrylamide and 2) amine groups on polyacrylamide chains and carboxyl groups on alginate chains.9. The condom of wherein the antioxidant is released by stretching of the hydrogel.10. The condom of wherein the antioxidant is quercetin.11. The condom of wherein the condom is capable of providing an increase in sexual pleasure when worn over not wearing a condom.12. The condom of wherein the condom is impenetrable to sperm.13. The condom of wherein the antioxidant is antiviral.14. A method of manufacturing the condom of comprising embedding the antioxidant into the hydrogel.15. The method of manufacturing the condom of comprising encapsulating the antioxidant into the hydrogel.16. The method of manufacturing of wherein the hydrogel comprises sulfated beta-cyclodextrin claim 15 , polyacrylamide claim 15 , and alginate.17. The method of manufacturing of wherein the hydrogel comprises ionic bonds comprising are 1) sulfated beta cyclodextrin with high negatively charge density and positively charge polyacrylamide and 2) calcium ion and ...

Подробнее
22-05-2014 дата публикации

PISTON CLOSURES FOR DRUG DELIVERY CAPSULES

Номер: US20140142500A1
Принадлежит:

A drug capsule and a method for making a drug capsule for a drug delivery device, such as an auto injector or needle-free injector, with improved stability and container closure integrity. The injector comprises a drug capsule sealed by a piston fabricated from PTFE modified by the inclusion of a co-polymer of PPVE, preferably in an amount less than 1% by weight, resulting in better performance while the device is stored and subjected to temperature cycling. 1. An drug capsule for use in a drug delivery device , comprising:a syringe body;a piston comprising polytetrafluoroethylene (PTFE) contained within said syringe body;wherein the (PTFE) has been modified by the inclusion of perfluor(propyl vinyl ether) (PPVE).2. The drug capsule of claim 1 , wherein the piston comprises less than 1% by weight of PPVE claim 1 , the drug capsule is prefilled claim 1 , and the syringe body comprises borosilicate glass.3. The drug capsule of claim 2 , wherein the borosilicate glass is strengthened by ion exchange.4. The drug capsule claim 3 , wherein the piston further comprises a circumferential rib of essentially triangular cross section.5. The drug capsule of claim 4 , wherein the rib is essentially a frustrum in cross section.6. A piston sealed drug capsule claim 4 , comprising:a cylindrical syringe body open at a first end;a liquid formulation comprised of a pharmaceutically active drug in the syringe body; anda piston inserted into and sealing the first end of the capsule in a manner which prevents the formulation from leaking out during temperature change in a range of from 0° C. to 50° C. over a period of one year.7. A needle free drug delivery system claim 4 , comprising:a cylindrical syringe body open at a first end, the body comprised of borosilicate glass;a liquid formulation comprising a pharmaceutically acceptable carrier and a pharmaceutically active drug;a piston having an external diameter substantially equal to an internal diameter of the syringe body open at the ...

Подробнее
10-03-2016 дата публикации

COMPOSITE PROSTHETIC DEVICES

Номер: US20160067374A1
Принадлежит:

The present disclosure provides composite prosthetic devices comprising two or more layers of electrospun polymers and methods of preparation thereof. In some embodiments, the two or more layers can be porous and in other embodiments, one or more components is nonporous. The composite prosthetic devices can comprise various materials and the properties of the prosthetic devices can be tailored for use in a range of different applications.

Подробнее
28-02-2019 дата публикации

POLYMER PARTICLES

Номер: US20190062479A1
Принадлежит:

Biodegradable, cross-linked polymer particle embolics and methods of making the same are described. The particle embolics can be used as embolization agents. 1. A polymer particle comprising:at least one monomer; andat least one crosslinker;wherein the polymer particle has a diameter between about 40 μm and about 1,200 μm and is susceptible to degradation through hydrolysis or enzymatic action, and wherein the degradation provides less than about 10% of the polymer particle intact after about 2 weeks.2. The polymer particle of claim 1 , wherein the polymer particle has a diameter between about 75 μm and about 1 claim 1 ,200 μm.3. The polymer particle of claim 1 , wherein the at least one monomer includes a functional group.4. The polymer particle of claim 3 , wherein the functional group is acrylate claim 3 , acrylamide claim 3 , methacrylate claim 3 , or methacrylamide.5. The polymer particle of claim 3 , wherein the functional group is an acidic ionizable functional group or a basic ionizable functional group.6. The polymer particle of claim 1 , wherein the at least one crosslinker includes at least two functional groups.7. The polymer particle of claim 1 , wherein the at least one crosslinker includes at least one linkage susceptible to degradation through hydrolysis or enzymatic action.9. The polymer particle of claim 7 , wherein the at least one linkage is an ester claim 7 , a thioester claim 7 , a carbonate claim 7 , a peptide cleavable by matrix metalloproteinases claim 7 , a peptide cleavable by matrix collagenases claim 7 , a peptide cleavable by matrix elastases claim 7 , a peptide cleavable by matrix cathepsins claim 7 , or a combination thereof.10. The polymer particle of claim 7 , including a second crosslinker including a second linkage selected from an ester claim 7 , a thioester claim 7 , a carbonate claim 7 , a peptide cleavable by matrix metalloproteinases claim 7 , a peptide cleavable by matrix collagenases claim 7 , a peptide cleavable by matrix ...

Подробнее
27-02-2020 дата публикации

RADIOPAQUE POLYMERS FOR MEDICAL DEVICES

Номер: US20200061252A1
Автор: GOODRICH Stephen D.
Принадлежит:

Radiopaque polymer compositions and methods for making the compositions are provided. These radiopaque polymer compositions include polymer compositions comprising a crosslinked polymer network, the network comprising a first repeating unit derived from a monofunctional monomer and a second repeating unit derived from a multifunctional non-iodinated monomer wherein neither of the two monomers is fluorinated. Devices formed from radiopaque polymer compositions are also provided. 4. The polymer composition of claim 1 , wherein the amount of the first repeating unit in the polymer composition is from 15 to 35 wt %.5. The polymer composition of claim 1 , wherein the amount of the second repeating unit in the polymer composition is from 65 to 85 wt %.10. The polymer composition of claim 7 , wherein the amount of the first monomer is from 15 to 35 wt % of the monomer mixture.15. The method of claim 12 , wherein the amount of the first monomer is from 15 to 35 wt % of the monomer mixture.1728. The method of claim 16 , wherein the amount of the first monomer is from 15 to 35 wt %. and the combined amount of the second monomer and the monomer of claim is from 85 to 65 wt % of the monomer mixture. This application is a continuation of U.S. patent application Ser. No. 15/706,560, filed Sep. 15, 2017, which is a continuation of U.S. patent application Ser. No. 14/766,626, with a § 371(c) date of Aug. 7, 2015, now U.S. Pat. No. 9,789,231, which is a U.S. National Stage Application under 35 U.S.C. § 371 of International Application No. PCT/US2014/015250, filed Feb. 7, 2014, which claims the benefit of U.S. Provisional Application No. 61/762,416, filed Feb. 8, 2013, each of which are hereby incorporated by reference in their entirety.Shape memory materials are defined by their capacity to recover a predetermined shape after significant mechanical deformation (K. Otsuka and C. M. Wayman, “Shape Memory Materials” New York: Cambridge University Press, 1998). The shape memory effect ...

Подробнее
27-02-2020 дата публикации

Medical Delivery Device With Laminated Stopper

Номер: US20200061296A1
Принадлежит:

The present disclosure relates to a medical delivery device that includes a barrel having an inner surface, a plunger rod having a distal end inserted within the barrel, and a stopper attached to the distal end of the plunger rod and contacting at least a portion of the inner surface of the barrel. In at least one embodiment, the inner surface is hydrophilic. The stopper may include an elastomeric body, one or more fluoropolymer layers, and two or more ribs laminated with the one or more fluoropolymer layers. In some embodiments, the contact width between at least one rib having a sealing surface and the portion of the inner surface of the barrel measured at a compressibility of greater than about 7.9% of the stopper is less than about 1.0 mm. 1. A medical delivery device comprising:a barrel containing at least one therapeutic;a plunger rod having a distal end inserted within the barrel;a stopper attached to the distal end of the plunger rod and contacting at least a portion of the inner surface of the barrel, the stopper comprising an elastomeric body, one or more fluoropolymer layers, and two or more ribs having a sealing surface and being positioned on the one or more fluoropolymer layers;wherein a contact width between at least one of said two or more ribs and a portion of the inner surface of the barrel measured at a compressibility of greater than about 7.9% of the stopper is less than about 1.0 mm.2. The medical delivery device of claim 1 , wherein said barrel is a silicone free syringe barrel.3. The medical delivery device of claim 1 , wherein said therapeutic comprises at least one bioactive selected from coagulation factors claim 1 , cytokines claim 1 , epigenetic protein families claim 1 , growth factors claim 1 , hormones claim 1 , peptides claim 1 , signal transduction molecules claim 1 , vaccines claim 1 , and combinations thereof.4. The medical delivery device of claim 1 , wherein said therapeutic comprises mutations of a bioactive selected from ...

Подробнее
08-03-2018 дата публикации

Implants with Wear Resistant Coatings and Methods

Номер: US20180064847A1
Принадлежит:

An implant comprises a substrate and a coating on a surface of the substrate, and the coating includes silicon nitride and has a thickness of from about 1 to about 15 micrometer wherein the silicon nitride coating has a composition defined by SiNW, where W is C, H and/or O, 2 Подробнее

09-03-2017 дата публикации

Adhesive Film Bandage for Medical Compression

Номер: US20170065459A1
Автор: RAGG Johann Christof

The present invention relates to a transparent elastic compression bandage film composite for the treatment of venous diseases and tissue lesions, comprising a transparent film layer of 5-50 microns thickness, a medical adhesive coated on at least a portion of one surface of the film layer, which is preferably hypoallergenic, a first release liner for longitudinal detachment covering the adhesive film surface and, optionally, a second release liner for longitudinal detachment to serve as a carrier, wherein the effects of elasticity and of strong adhesion add to a compression quality superior to textile European standard compression media, in the main affecting superficial varicosities and long-term wearing. 1. A film compression bandage composite using elastic forces combined with adhesive forces , for compression treatment of venous diseases and tissue lesions , comprising{'sup': 2', '22, 'a. an elastic film with a modulus of elasticity of 5-400 N/mm, when applying longitudinal expansions of 10-100%, and producing tensions of 1-40 N/mm,'}b. a medical adhesive coated on at least a portion of the lower surface of said film, which is preferably pressure-sensitive and hypoallergenic, adhering to the upper side of the film with an adhesive force of 0.12-2 N/25 mm, and adhering to human skin with an adhesive force of 0.06-1 N/25 mm measured after 24 hours of wearing;c. a first release liner covering the adhesive surface of the film, for longitudinal removal;d. optionally, a second release liner, adhering to the non-adhesive side of the film, to serve as a carrier, for longitudinal removal, which is preferably transparent.2. A composite according to claim 1 , wherein the diameter reduction in superficial veins obtainable by the adhesive compression bandage film reaches or exceeds the diameter reduction achieved by phlebological textile short-stretch compression bandages in identical wrappings.3. A composite according to or claim 1 , wherein the elastic film has a modulus ...

Подробнее
09-03-2017 дата публикации

Articles Including Expanded Polytetrafluoroethylene Membranes With Serpentine Fibrils Having A Discontinuous Fluoropolymer Layer Thereon

Номер: US20170065747A1
Принадлежит:

Articles comprising an expanded polytetrafluoroethylene membrane having serpentine fibrils and having a discontinuous coating of a fluoropolymer thereon are provided. The fluoropolymer may be located at least partially in the pores of the expanded fluoropolymer membrane. In exemplary embodiments, the fluoropolymer is fluorinated ethylene propylene. The application of a tensile force at least partially straightens the serpentine fibrils, thereby elongating the article. The expanded polytetrafluoroethylene membrane may include a microstructure of substantially only fibrils. The articles can be elongated to a predetermined point at which further elongation is inhibited by a dramatic increase in stiffness. In one embodiment, the articles are used to form a covered stent device that requires little force to distend in the radial direction to a first diameter but is highly resistant to further distension to a second diameter (stop point). A large increase in diameter can advantageously be achieved prior to reaching the stop point. 140-. (canceled)41. A method of forming a covered stent comprising:positioning a first wrinkle-free tubular member on an interior surface of a stent;positioning a second wrinkle-free tubular member on an external surface of said stent, each said tubular member comprising a composite material including an expanded polytetrafluoroethylene membrane having serpentine fibrils and a discontinuous coating of a fluoropolymer thereon, said fluoropolymer being positioned on an external surface of said first and tubular member and on an interior surface of said second tubular member; andheating said stent having thereon said first and second tubular members to adhere said fluoropolymer on said first tubular member to said second tubular member through interstices of said stent and form a covered stent.42. The method of claim 41 , wherein the fluoropolymer is fluorinated ethylene propylene.43. The method of claim 41 , wherein the expanded fluoropolymer ...

Подробнее
12-03-2015 дата публикации

ENDOLEAK ISOLATION SLEEVES AND METHODS OF USE

Номер: US20150073523A1
Автор: Chobotov Michael V.
Принадлежит: TRIVASCULAR, INC.

Devices and methods for reducing or eliminating endoleaks by isolating feeder vessels from an aneurysm of a patient. In some cases, a tubular isolation sleeve may be deployed in a patient's aneurysm prior to deployment of an endograft such as a modular bifurcated endograft. 1. A self-expanding tubular isolation sleeve for treatment of an aneurysm and reduction of endoleaks , comprising:a self-expanding resilient frame including one or more resilient strands formed into a tubular structure that is configured to expand from a radially constrained state to a radially expanded state and conform to an irregular morphology of an abdominal aortic aneurysm;at least one tubular layer of thin flexible sheet material disposed on the resilient frame which has an outside surface that is configured to seal against an inner wall of an aneurysm and isolate a feeder vessel of the aneurysm; anda fusiform configuration wherein an outer profile of the tubular isolation sleeve in a relaxed unconstrained state is configured to roughly approximate a profile of an interior surface of a typical abdominal aortic aneurysm and wherein the outer profile includes a proximal reduced transverse dimension section at a proximal end thereof, a distal reduced transverse dimension section at a distal end thereof and an enlarged center section of greater transverse dimension than the proximal and distal reduced transverse dimension sections.24. The tubular isolation sleeve of wherein the enlarged center section has a transverse dimension up to about times the transverse dimension of the proximal reduced diameter section and the distal reduced diameter section.3. The tubular isolation sleeve of wherein the enlarged center section has a transverse dimension that is about 1.4 times to about 3 times the transverse dimension of proximal reduced diameter section and the distal reduced diameter section.4. The tubular isolation sleeve of wherein an axial length of the tubular isolation sleeve is about 8 cm to ...

Подробнее