Methods for manufacturing secured strand end devices

摘要

A woven, self-expanding stent device has one or more strands and is configured for insertion into an anatomical structure. The device includes a coupling structure secured to two different strand end portions that are substantially aligned with each other. The two different strand end portions include nickel and titanium. The coupling structure is not a strand of the device.

主权项

1. A method of forming a self-expanding stent, the method comprising:
forming a first end of the stent by forming a first bend in each of a plurality of strands, each strand including a strand section on both sides of the first bend, each strand section including an end; weaving the strand sections; after weaving the strand sections, heat treating the plurality of strands for a first heat treatment time; forming a second end of the stent by forming a second bend in each of the plurality of strands; after forming the second bends, back braiding some of the strand sections, wherein back braiding some of the strand sections comprises passing the strand sections by at least two strand crossings; securing a first strand section end and a second strand section end, the securing comprising securing the first strand section end and the second strand section end to a coupling structure; and positioning the coupling structure radially inward of at least one said strand crossing the coupling structure, wherein passing the strand sections by at least two strand crossings comprises passing the strand sections radially inward of at least one strand crossing and radially outward of at least one other strand crossing.