Suture and wire stent deployment system

Patent metadata

Field	Value
Publication number	US-2016199207-A1
Application number	US-201614992449-A
Country	US
Kind code	A1
Filing date	Jan 11, 2016
Priority date	Jan 14, 2015
Publication date	Jul 14, 2016
Grant date	—

Abstract

A stent delivery system is provided that includes a self-expanding stent with a longitudinal length and a plurality of individual suture loops spaced along the longitudinal length of the stent, wherein the stent is compressed by the plurality of individual suture loops. The stent delivery system also includes a longitudinal pull member that secures the plurality of individual suture loops about the stent, wherein the plurality of individual suture loops are configured to separate from about the stent when the longitudinal pull wire is removed.

First claim

What is claimed is:

1 . A stent delivery system, comprising:
a self-expanding stent comprising a longitudinal length; an elongate delivery catheter, wherein the self-expanding stent is removably disposed about the delivery catheter. a plurality of individual suture loops spaced along the longitudinal length of the self-expanding stent, wherein the self-expanding stent is compressed by the plurality of individual suture loops; and a longitudinal pull member securing the plurality of individual suture loops about the self-expanding stent, wherein the plurality of individual suture loops are configured to separate from about the self-expanding stent when the longitudinal pull member is removed.

2 . The stent delivery system of claim 1 , wherein:
the plurality of individual suture loops comprise a biodegradable material.

3 . The stent delivery system of claim 1 , wherein:
the longitudinal pull member comprises a flexible, biocompatible material.

4 . The stent delivery system of claim 1 , wherein:
the self-expanding stent is an esophageal stent.

5 . The stent delivery system of claim 1 , further comprising:
a longitudinal retrieval member connected to the plurality of individual suture loops.

6 . The stent delivery system of claim 1 , wherein:
the self-expanding stent further comprises a delivery state wherein the self-expanding stent is compressed by the plurality of individual suture loops; and the self-expanding stent further comprises a deployed state wherein the plurality of individual suture loops are separated from about the self-expanding stent allowing the self-expanding stent to revert to a non-compressed state.

7 . The stent delivery system of claim 6 , wherein:
the self-expanding stent further comprises an outer diameter, wherein the outer diameter of the self-expanding stent during the delivery state is smaller than the outer diameter of the self-expanding stent during the deployed state.

8 . The stent delivery system of claim 1 , wherein:
the plurality of individual suture loops comprises a first set of suture loops and a second set of suture loops; the longitudinal pull member comprises a first individually movable pull member and a second individually movable pull member, the first individually movable pull member securing the first set of suture loops about the self-expandable stent and the second individually movable pull member securing the second set of suture loops about the self-expandable stent; and the first set of suture loops is configured to separate from about the self-expanding stent when the first individually movable pull member is removed, and the second set of suture loops is configured to separate from about the self-expanding stent when the second individually movable pull member is removed.

9 . The stent delivery system of claim 8 , further comprising:
a longitudinal retrieval member connected to the first and second sets of suture loops.

10 . The stent delivery system of claim 8 , wherein:
the self-expanding stent further comprises a delivery state wherein the self-expanding stent is compressed by the first and second sets of suture loops; and the self-expanding stent further comprises a deployed state wherein the first and second sets of suture loops are separated from about the self-expanding stent allowing the self-expanding stent to revert to a non-compressed state.

11 . The stent delivery system of claim 10 , wherein:
the self-expanding stent further comprises an outer diameter, wherein the outer diameter of the self-expanding stent during the delivery state is smaller than the outer diameter of the self-expanding stent during the deployed state.

12 . The stent delivery system of claim 8 , wherein:
a main pull member, the main pull member connected to the first individually movable pull member and the second individually movable pull member.

13 . The stent delivery system of claim 12 , wherein:
the first individually movable pull member has a predetermined built in amount of slack.

14 . A method of delivering a stent, comprising:
providing a stent delivery system comprising a self-expanding stent comprising a longitudinal length, a plurality of individual suture loops spaced along the longitudinal length of the self-expanding stent, wherein the self-expanding stent is compressed by the plurality of individual suture loops, and a longitudinal pull member securing the plurality of individual suture loops about the self-expanding stent, wherein the plurality of individual suture loops are configured to separate from about the self-expanding stent when the longitudinal pull member is removed; inserting the stent delivery system in a compressed state into a body lumen; and expanding the self-expanding stent to an expanded state by removing the longitudinal pull member to separate the plurality of individual suture loops from about the self-expanding stent.

15 . The method of claim 14 , further comprising:
providing a longitudinal retrieval member connected to the plurality of individual suture loops; and removing the plurality of individual suture loops from the body lumen by extracting the longitudinal retrieval member.

16 . A method of delivering a stent, comprising:
providing a stent delivery system comprising a self-expanding stent comprising a longitudinal length, the longitudinal length comprising a plurality of stent portions, each stent portion comprising a plurality of individual suture loops compressing the corresponding stent portion, and a plurality of longitudinal pull members corresponding to the plurality of stent portions, each longitudinal pull member securing the corresponding plurality of suture loops about the self-expanding stent, wherein the plurality of individual suture loops in each stent portion are configured to separate from about the self-expanding stent when the corresponding longitudinal pull member is removed; inserting the stent delivery system in a compressed state into a body lumen; and expanding one of the plurality of stent portions to an expanded state by removing the corresponding longitudinal pull member to separate the corresponding plurality of individual suture loops from about the self-expanding stent.

17 . The method of claim 16 , further comprising:
repeating the step of expanding one of the plurality of stent portions until all of the plurality of stent portions are expanded.

18 . The method of claim 17 , further comprising:
providing a longitudinal retrieval member connected to the plurality of individual suture loops; and removing the plurality of individual suture loops from the body lumen by extracting the longitudinal retrieval member.

Assignees

• Cook Medical Technologies Llc

Inventors

• Treacy Gerard
• Mchugo Vinny
• Campbill Triona

Classifications

• A61F2210/0004

  bioabsorbable · CPC title

• A61F2002/9511

  the retaining means being filaments or wires · CPC title

• A61F2/95 Primary

  Instruments specially adapted for placement or removal of stents or stent-grafts · CPC title

• A61F2/82 Primary

  Devices providing patency to, or preventing collapsing of, tubular structures of the body, e.g. stents (stent-grafts for tubular structures of the body other than blood vessels A61F2/04; stent-grafts for blood vessels A61F2/07) · CPC title

• A61F2002/9505

  having retaining means other than an outer sleeve, e.g. male-female connector between stent and instrument · CPC title