Device for anastomotic bypass

Patent metadata

Field	Value
Publication number	US-12551328-B2
Application number	US-202318315352-A
Country	US
Kind code	B2
Filing date	May 10, 2023
Priority date	Dec 4, 2018
Publication date	Feb 17, 2026
Grant date	Feb 17, 2026

Abstract

A stent including a tubular body formed of one or more interwoven wires, a first anchor member disposed adjacent the first open end of the stent, a second anchor member disposed adjacent the second open end of the stent, and at least one divider disposed between the first and second anchor members. The first and second anchor members and the divider extend radially outward from the tubular body to divide the tubular body into at least a first saddle region extending between the first anchor member and the divider and a second saddle region extending between the second anchor member and the divider.

First claim

What is claimed is:

1 . A method of forming an anastomosis between first and second spaced apart body vessels, comprising:
implanting a stent through a tissue wall with a first open end of the stent disposed within the first body vessel and a second open end of the stent disposed within the second body vessel, the stent including a tubular body formed of one or more interwoven wires extending continuously from the first open end to the second open end, the tubular body defining a lumen extending between the first and second open ends, the stent including at least three longitudinally spaced apart anchor members extending radially outward from the tubular body, the anchor members each having an outer diameter larger than an outer diameter of the tubular body disposed between the anchor members, the at least three anchor members including a first anchor member adjacent the first open end, a second anchor member adjacent the second open end, and a center anchor member, the stent further including first and second side dividers each extending radially outward from the tubular body and having an outer diameter larger than the outer diameter of the tubular body, the first side divider, the second side divider, and the center anchor member dividing the tubular body into at least a first saddle region extending between the first anchor member and the first side divider, a second saddle region extending between the second anchor member and the second side divider, a third saddle region extending between the first side divider and the center anchor member, and a fourth saddle region extending between the second side divider and the center anchor member wherein implanting the stent includes placing the stent with a first vessel wall of the first body vessel disposed within the first saddle region and a second vessel wall of the second body vessel disposed within the second saddle region, wherein the third and fourth saddle regions are devoid of vessel walls; and draining fluid from the first body vessel through the lumen of the stent into the second body vessel.

2 . The method of claim 1 , wherein implanting the stent includes placing an outer surface of the first vessel wall in contact with a first side of the center anchor member and placing an outer surface of the second vessel wall in contact with a second side of the center anchor member.

3 . The method of claim 2 , wherein prior to implanting the stent, the first and second body vessels have an original spaced-apart configuration, wherein placing the first and second vessel walls in contact with the center anchor member holds the first and second body vessels in their original spaced-apart configuration.

4 . The method of claim 1 , wherein prior to implanting the stent, the first and second body vessels have an original spaced-apart configuration, wherein placing the first vessel wall in the first saddle region and placing the second vessel wall in the second saddle region holds the first and second body vessels in their original spaced-apart configuration.

5 . The method of claim 1 , wherein the center anchor member is moveable from a first, contracted configuration in which the center anchor member has a first axial length, to a second, fully expanded configuration in which the center anchor member has a second axial length greater than the first axial length, the center anchor member expanding axially while compressing radially as it moves from the first configuration to the second configuration; and
wherein implanting the stent includes first expanding or contracting the center anchor member into the first or second configuration, and then placing the stent with the first vessel wall within the first saddle region and the second vessel wall within the second saddle region.

6 . The method of claim 5 , wherein moving the center anchor member between the first and second configurations maintains a constant axial length of the first and second saddle regions.

7 . The method of claim 5 , wherein the center anchor member is configured to move through an infinite number of partially expanded configurations between the contracted configuration and the fully expanded configuration, wherein implanting the stent includes selecting a desired axial length for the center anchor member and expanding or contracting the center anchor member to achieve the desired axial length before placing the first vessel wall within the first saddle region and the second vessel wall within the second saddle region.

8 . The method of claim 7 , wherein the center anchor member is configured to remain in its configuration when manually expanded or contracted, such that after the center anchor member is expanded or contracted to achieve the desired axial length, the axial length remains constant while the stent is implanted and the first and second vessel walls are placed within the first and second saddle regions.

9 . The method of claim 1 , wherein the stent further comprises a covering extending over an entirety of an outer surface of the tubular body, and the at least three longitudinally spaced apart anchor members, wherein the covering extends longitudinally beyond the first open end of the tubular body, forming a collapsible tubular sleeve, wherein implanting the stent includes first inverting and extending the collapsible tubular sleeve through the lumen of the tubular body from the first open end of the tubular body and extending out the second open end of the stent with a free end of the collapsible tubular sleeve extending beyond the second open end of the tubular body, and then implanting the stent.

10 . The method of claim 9 , wherein inverting and extending the collapsible tubular sleeve through the lumen of the tubular body defines a one-way valve that only allows fluid to pass from the first open end of the tubular body, through the collapsible tubular sleeve, and out the free end of the collapsible tubular sleeve.

11 . The method of claim 10 , wherein the collapsible tubular sleeve tapers to a smaller diameter at the free end compared to a diameter at the first open end of the tubular body.

12 . The method of claim 1 , wherein the first vessel wall is a stomach wall and the second vessel wall is a jejunum wall.

13 . The method of claim 1 , wherein the first vessel wall is a stomach wall and the second vessel wall is a duodenum wall.

14 . A method of forming an anastomosis between first and second spaced apart body vessels, comprising:
implanting a stent through a tissue wall with a first open end of the stent disposed within the first body vessel and a second open end of the stent disposed within the second body vessel, the stent including a tubular body formed of one or more interwoven wires extending continuously from the first open end to the second open end, the tubular body defining a lumen extending between the first and second open ends, the stent including at least three longitudinally spaced apart anchor members extending radially outward from the tubular body, the anchor members each having an outer diameter larger than an outer diameter of the tubular body disposed between the anchor members, the at least three anchor members including a first anchor member adjacent the first open end, a second anchor member adjacent the second open end, and a center anchor member, the at least three anchor members dividing the tubular body into at least a first saddle region extending between the first anchor member and the center anchor member, and a second saddle region extending between the center anchor member and the second anchor member, wherein the stent further comprises a covering extending over

Assignees

• Boston Scient Scimed Inc

Inventors

• Folan Martyn G

Classifications

• A61F2230/0095

  Saddle-shaped · CPC title

• A61M2210/12

  Blood circulatory system · CPC title

• A61M2210/1042

  Alimentary tract (A61M2210/0618 takes precedence) · CPC title

• A61M27/002

  Implant devices for drainage of body fluids from one part of the body to another (intraocular A61F9/00781; middle ear A61F11/202) · CPC title

• A61F2/93

  circumferentially expandable by using ratcheting locks · CPC title