OCCLUDER SUPPORT AND PREPARATION METHOD THEREFOR

An occluder support and a preparation method thereof are disclosed. The occluder support includes a mesh body and a trailing structure connected to the mesh body. The trailing structure is inwardly folded into a blunt shape. 1. An occluder support , comprising a mesh body and a trailing structure connected to the mesh body , wherein the trailing structure is inwardly folded into a blunt shape.2. The occluder support of claim 1 , wherein the mesh body is formed integrally with the trailing structure.3. The occluder support of claim 1 , wherein the trailing structure forms an angle in a range of 90°˜180° with a longitudinal axis of the mesh body.4. The occluder support of claim 3 , wherein the angle between the trailing structure and the longitudinal axis of the mesh body is in a range of 110°˜150°.5. The occluder support of claim 1 , wherein the trailing structure is composed of a plurality of circumferentially arranged struts claim 1 , each of the struts is connected to the mesh body at one end and has a portion at another end claim 1 , and the portion is inwardly folded into a blunt shape and connected to the mesh body.6. The occluder support of claim 5 , wherein the struts are connected to the mesh body detachably or undetachably.7. The occluder support of claim 6 , wherein the struts are sutured claim 6 , tied claim 6 , snapped or riveted to the mesh body.8. The occluder support of claim 5 , wherein the mesh body comprises several mesh cells having vertices claim 5 , and wherein each of the struts is connected to the mesh body at a corresponding one of the vertices.9. The occluder support of claim 5 , wherein the one end of each of the struts is connected to the mesh body claim 5 , and the other end of the strut passes through the mesh body and protrudes out of an outer surface thereof to form an anchoring spike.10. The occluder support of claim 5 , wherein a proximal region claim 5 , a support region and an anchoring region are defined in the mesh body in ...

Medical instrument

A medical instrument (1000) includes a stent (100) and a constraining structure (300). The constraining structure (300) constrains, and thereby prevents tangling of, a trailing section of the stent (100), ensuring successful release of the stent (100). Specifically, the stent (100) has a first proximal end and an opposing first distal end. The first distal end is configured with an expanded configuration and a collapsed configuration. The trailing section at the first distal end includes a number of protrusions (111). The constraining structure (300) includes a body (310) and a clamping mechanism (320). The clamping mechanism (320) is disposed at a distal end of the body (310), and the body (310) extends from the first proximal end to the first distal end. The clamping mechanism (320) limits relative movement and thus prevents tangling of the protrusions (111) by passing through all or some of the protrusions (111). Additionally, it allows the stent (100) to be less deformed within a delivery sheath and thereby enables it to successfully expand when pushed out of the sheath.

Medical system and medical device

Medical system and medical device

A medical system and a medical device. The medical system includes a delivery device and degradable occlude which has a main body, proximal fixing member, distal fixing member, and anchoring portion. The main body has a proximal end connected to the proximal fixing member, and a distal end connected to the distal fixing member. The anchoring portion is defined on the main body. The delivery device includes an external push tube and internal push member. The external push tube is configured to be detachably connected to the proximal fixing member. The internal push member is configured to pass through the external push tube, the proximal fixing member and the main body successively to detachably connect to the distal fixing member. The delivery device is configured to apply an axial pressure to the occluder, to cause the main body to expand from a collapsed configuration to an expanded configuration to drive the anchoring portion to stretch out.

Medical system and medical device

The present invention relates to a medical system and a medical device. The medical system includes a delivery device (20) and a degradable occluder (10). The occluder (10) comprises a main body (11, 12), a proximal fixing member (14), a distal fixing member (15) and an anchoring portion (16). The main body (11, 12) has a proximal end connected to the proximal fixing member (14), and a distal end connected to the distal fixing member (15). The anchoring portion is defined on the main body. The delivery device (20) comprises an external push tube (21) and an internal push member (22). The external push tube (21) is configured to be detachably connected to the proximal fixing member (14). The internal push member (22) is configured to pass through the external push tube (21), the proximal fixing member (14) and the main body (11, 12) successively to detachably connect to the distal fixing member (15). The delivery device (20) is configured to apply an axial pressure to the occluder (10), to cause the main body (11, 12) to expand from a collapsed configuration to an expanded configuration to drive the anchoring portion (16) to stretch out. The invention solves the problem that the degradable occluder cannot self-expand to a predetermined shape in the body cavity due to the degradable material lacking shape memory ability, and the stabs cannot stretch out autonomously to achieve anchoring at the target position.

Medical instrument

A medical instrument (1000) includes a stent (100) and a constraining structure (300). The constraining structure (300) constrains, and thereby prevents tangling of, a trailing section of the stent (100), ensuring successful release of the stent (100). Specifically, the stent (100) has a first proximal end and an opposing first distal end. The first distal end is configured with an expanded configuration and a collapsed configuration. The trailing section at the first distal end includes a number of protrusions (111). The constraining structure (300) includes a body (310) and a clamping mechanism (320). The clamping mechanism (320) is disposed at a distal end of the body (310), and the body (310) extends from the first proximal end to the first distal end. The clamping mechanism (320) limits relative movement and thus prevents tangling of the protrusions (111) by passing through all or some of the protrusions (111). Additionally, it allows the stent (100) to be less deformed within a delivery sheath and thereby enables it to successfully expand when pushed out of the sheath.