Stent designs to cover catheter access site

Patent metadata

Field	Value
Publication number	US-2020214861-A1
Application number	US-201916242587-A
Country	US
Kind code	A1
Filing date	Jan 8, 2019
Priority date	Jan 8, 2019
Publication date	Jul 9, 2020
Grant date	—

Abstract

Methods, apparatuses and systems are described for delivering a stent through an access hole of a body lumen and covering up the access hole after deploying the stent. Stents are described that include a stent body defining a body lumen contact surface area and a deployable member configured to deploy from the stent body and increase the body lumen contact surface area of the stent. Deployable members that hinge, unroll, extend, expand, and coaxially translate with respect to the stent body are described. A system for delivering a stent into a body lumen are described that may include a coverage member configured to at least partially cover the hole in the wall of the stent upon withdrawing a tubular member through the hole in the wall of the stent. Coverage members may include a self-sealing membrane, a flap valve, or a hinged valve.

First claim

What is claimed is:

1 . A stent comprising:
a stent body defining a body lumen contact surface area; and a deployable member configured to deploy from the stent body and increase the body lumen contact surface area of the stent body.

2 . The stent of claim 1 , wherein the deployable member is configured to hinge from inside the stent body to outside the stent body.

3 . The stent of claim 1 , wherein the deployable member is configured to unroll from inside the stent body to outside the stent body.

4 . The stent of claim 1 , wherein the deployable member is configured to extend in length axially in a direction away from the stent body.

5 . The stent of claim 1 , wherein the deployable member is configured to translate axially in a direction away from the stent body from inside the stent body to outside the stent body.

6 . The stent of claim 1 , wherein the deployable member comprises at least one flap hingedly coupled with the stent body.

7 . The stent of claim 1 , wherein the deployable member comprises a plurality of flaps hingedly coupled with the stent body and equidistantly spaced around a circumference of the stent body.

8 . The stent of claim 1 , wherein the deployable member comprises an accordion tube coupled with an end of the stent body.

9 . The stent of claim 8 , wherein the accordion tube comprises at least one integrated spring element.

10 . The stent of claim 1 , wherein the deployable member comprises a tubular body sized to fit inside the stent body of the stent.

11 . The stent of claim 1 , wherein the deployable member comprises a flexible sleeve.

12 . The stent of claim 1 , wherein the deployable member is sized to cover a body lumen access hole of a body lumen through which the stent accessed the body lumen.

13 . A method of stenting a body lumen, the method comprising:
delivering a stent through an access site of the body lumen, the stent comprising a stent body and a deployable member; and deploying the deployable member from the stent body to cover the access site.

14 . The method of claim 13 , wherein deploying the deployable member comprises releasing the deployable member from a constrained configuration.

15 . The method of claim 13 , wherein deploying the deployable member comprises pulling on the deployable member.

16 . A system for delivering a stent into a body lumen, the system comprising:
a stent; a stent delivery system configured to deliver the stent through an access site in a wall of the body lumen; a tubular member configured to retract the stent toward the access site such that a proximal portion of the stent at least partially covers the access site, wherein the stent is disposed onto the tubular member such that the tubular member extends inside the stent along a distal portion of the stent, extends through a hole in a wall of the stent, and extends outside of the stent along the proximal portion of the stent; and a coverage member configured to at least partially cover the hole in the wall of the stent upon withdrawing the tubular member through the hole in the wall of the stent.

17 . The system of claim 16 , wherein the coverage member comprises a self-sealing membrane material disposed on an outer surface of the wall of the stent and configured to seal the hole in the wall of the stent upon withdrawing the tubular member through the hole in the wall of the stent.

18 . The system of claim 16 , wherein the coverage member comprises a flap valve configured to seal the hole in the wall of the stent upon withdrawing the tubular member through the hole in the wall of the stent.

19 . The system of claim 16 , wherein the coverage member comprises a hinged valve configured to hinge such that upon withdrawing the tubular member through the hole in the wall of the stent, the hinged valve hinges to at least partially cover the hole in the wall of the stent.

20 . The system of claim 19 , further comprising:
a polymer jacket disposed on an outer surface of a central portion of the stent, wherein the coverage member is coupled with the polymer jacket.

Assignees

• Covidien Lp

Inventors

• Mcweeney John O
• Huszar Hillary K
• Maguire Mark A
• Daniel Shawn C
• Bartfield Scott
• Tinkham Brian
• Hamilton David H
• Karasek David J

Classifications

• A61F2250/0065

  telescopic · CPC title

• A61F2250/0006

  for adjusting angular orientation · CPC title

• A61F2210/0057

  stretchable · CPC title

• A61F2210/0014

  using shape memory or superelastic materials, e.g. nitinol · CPC title

• A61F2002/045

  Stomach, intestines · CPC title