Self-adjusting tissue lumen stents

Inventor: Martyn G. Folan (Loughrea, IE)

Assignee: Boston Scientific Scimed, Inc.

A61F2/04 A61B17/1114 A61F2002/045 A61F2210/0014

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Quick Facts

Patent No.: US 12672950
App. No.: 18/756,942
Granted: Jul 7, 2026
Kind: B2

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Abstract

The present disclosure provides medical devices such as self-expanding stents or tissue lumen stents with an overlapping layer. The medical devices can have a coating or cover disposed over all or a portion of the medical device. The overlapping layer define a doubled back portion at an end of the medical device that includes an elongate section to provide dynamic movement of the end of the medical device relative to a central portion of the medical device.

Claims (30)

1 . A medical device, comprising:

an elongate tubular body comprising a first end portion, a body portion, and a second end portion opposite the first end portion, the elongate tubular body having a constrained configuration and an unconstrained configuration;

the first end portion, in the unconstrained configuration comprising a retention member, an elongate section distal to the retention member, and a doubled back portion extending from the elongate section over the retention member towards the second end portion; and

wherein the doubled back portion has a free proximal end unattached to the body portion of the elongate tubular body.

2 . The medical device of claim 1 , the elongate tubular body comprising a central portion disposed between the first end portion and the second end portion, the second end portion comprising a second retention member.

3 . The medical device of claim 2 , the second end portion comprising a second doubled back portion extending from the retention member towards the first end portion.

4 . The medical device of claim 3 , the second end portion comprising a second elongate section distal to the second retention member, wherein the second doubled back portion extends from the second elongate section over the second retention member towards the central portion.

5 . The medical device of claim 1 , the second end portion comprising a straight end portion.

6 . The medical device of claim 1 , the second end portion comprising a tapered end portion, the elongate tubular body comprising a central portion disposed between the first end portion and the tapered end portion.

7 . The medical device of claim 1 , wherein the doubled back portion comprises a radial inner wall defining a lumen of the elongate tubular body and a radial outer wall extending over an outer perimeter of the inner wall.

8 . The medical device of claim 1 , the elongate tubular body comprising a covering disposed over at least a portion of the elongate tubular body.

9 . The medical device of claim 1 , wherein the elongate tubular body in the unconstrained configuration is configured to facilitate fluid flow without leakage between the first end portion and the second end portion.

10 . The medical device of claim 1 , wherein the medical device is a self-expanding stent.

11 . The medical device of claim 1 , wherein the elongate tubular body comprises a mesh, one or more braided wires, or woven filament.

12 . The medical device of claim 1 , wherein the elongate tubular body comprises a polymer, a metal, a shape memory material, or Nitinol.

13 . A medical device for placement in an anastomosis, comprising:

wherein the doubled back portion has a free proximal end unattached to the body portion of the elongate tubular body, and wherein the elongate section is configured to provide dynamic movement of the retention member relative to the second end portion.

14 . The medical device of claim 13 , the elongate tubular body comprising a central portion disposed between the first end portion and the second end portion, the second end portion comprising a second retention member and a second doubled back portion extending from the retention member towards the first end portion.

15 . The medical device of claim 14 , the second end portion comprising a second elongate section distal to the second retention member, wherein the second doubled back portion extends from the second elongate section over the second retention member towards the central portion, and wherein the second elongate section is configured to provide dynamic movement of the second retention member relative to the first end portion.

16 . A medical device, comprising:

a stent comprising an elongate tubular body comprising a first end portion, a body portion, and a second end portion opposite the first end portion, the elongate tubular body having a constrained configuration and an unconstrained configuration;

a delivery device configured to hold the stent in the constrained configuration and deploy the stent in an anastomosis in the unconstrained configuration;

wherein the doubled back portion has a free proximal end unattached to the body portion of the elongate tubular body.

17 . The medical device of claim 16 , the elongate tubular body comprising a central portion disposed between the first end portion and the second end portion, the second end portion comprising a second retention member.

18 . The medical device of claim 17 , the second end portion comprising a second doubled back portion extending from the retention member towards the first end portion.

19 . The medical device of claim 18 , the second end portion comprising a second elongate section distal to the second retention member, wherein the second doubled back portion extends from the second elongate section over the second retention member towards the central portion.

20 . The medical device of claim 16 , the second end portion comprising a straight end portion.