摘要:
A vessel closure device is provided that may include a guide member, one or more needle guides disposed at least partially within the guide member, and an angle adjustment member movably attached to the guide member. The needle guides may be configured to move between a first position wherein the needle guides are substantially straightened at least partially within the guide member and a second position wherein the needle guides at least partially extend radially and distally away from the guide member. The angle adjustment member may be configured to move between a first position and a second position wherein the angle adjustment member can selectively deflect the needle guides radially toward the guide member when the needle guides are in the second position.
摘要:
A vessel closure device is provided that may include a guide member, one or more needle guides disposed at least partially within the guide member, and an angle adjustment member movably attached to the guide member. The needle guides may be configured to move between a first position wherein the needle guides are substantially straightened at least partially within the guide member and a second position wherein the needle guides at least partially extend radially and distally away from the guide member. The angle adjustment member may be configured to move between a first position and a second position wherein the angle adjustment member can selectively deflect the needle guides radially toward the guide member when the needle guides are in the second position.
摘要:
Apparatus and methods for stenting are provided comprising a stent attached to a porous biocompatible material that is permeable to endothelial cell ingrowth, but impermeable to release of emboli of predetermined size. Apparatus and methods are also provided for use at a vessel branching. The present invention further involves porous polymer membranes, suitable for use in medical implants, having controlled pore sizes, pore densities and mechanical properties. Methods of manufacturing such porous membranes are described in which a continuous fiber of polymer is extruded through a reciprocating extrusion head and deposited onto a substrate in a predetermined pattern. When cured, the polymeric material forms a stable, porous membrane suitable for a variety of applications, including reducing emboli release during and after stent delivery, and providing a source for release of bioactive substances to a vessel or organ and surrounding tissue.
摘要:
Method for manufacturing an endoprosthesis are described. The method may include selecting an indication range based on a range of inner diameters of a body lumen. A nominal diameter of the endoprosthesis may be selected. A range of chronic outward force, a range of radial force, a range of safety factors, or combinations thereof may be selected. A design characteristic may be determined based on the indication range, the nominal diameter, and at least one of the range of chronic outward force, the range of radial force, and the range of safety factors. The endoprosthesis may be manufactured based on the determined design characteristic.