Constraining mechanisms for selective deployment and associated methods

Patent metadata

Field	Value
Publication number	US-12478490-B2
Application number	US-201917608321-A
Country	US
Kind code	B2
Filing date	May 10, 2019
Priority date	May 10, 2019
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

Various aspects of the present disclosure are directed toward medical device deployment apparatuses, systems, and methods. The apparatuses, systems, and methods may include at least one first constraining fiber arranged as a series of multiple loops to form a warp knit surrounding the medical device in a constrained configuration and at least one second constraining fiber arranged with the at least one first constraining fiber having at least one loop arranged in a non-warp knit pattern.

First claim

What is claimed is:

1 . A medical device deployment apparatus, the apparatus comprising:
a medical device; at least one first constraining fiber arranged as a series of multiple loops to form a warp knit surrounding the medical device in a constrained configuration, the warp knit being configured to separate and be removed to deploy the medical device; and at least one second constraining fiber arranged with the at least one first constraining fiber in the warp knit, the at least one second constraining fiber having at least one loop arranged in a non-warp knit pattern including a chain-link stitch.

2 . The apparatus of claim 1 , wherein the at least one first constraining fiber comprises multiple fibers knitted together.

3 . The apparatus of claim 1 , wherein the first constraining fiber and the at least one second constraining fiber form a constraint, and the at least one loop arranged in the non-warp knit pattern is arranged at a distal end of the constraint.

4 . The apparatus of claim 3 , wherein the at least one loop arranged in the non-warp knit pattern is arranged in a chain-link stitch.

5 . The apparatus of claim 4 , wherein the at least one first constraining fiber is interwoven with the at least one second constraining fiber to form the constraint with each of the at least one first constraining fiber and the at least one second constraining fiber forming a row of knots.

6 . The apparatus of claim 5 , wherein a first row of the row of knots is formed by the at least one first constraining fiber in the warp knit pattern and a second row of the row of knots is formed by the at least one second constraining fiber in a non-warp knit pattern.

7 . The apparatus of claim 6 , wherein the non-warp knit pattern of the second row comprises chain-link stitches.

8 . The apparatus of claim 1 , wherein the at least one first constraining fiber includes the first constraining fiber and a third constraining fiber, and the at least one second constraining fiber includes the second constraining fiber and a fourth constraining fiber with the first constraining fiber, second constraining fiber, the third constraining fiber, and the fourth constraining fiber being interwoven to form a constraint.

9 . The apparatus of claim 8 , wherein the constraint includes multiple knot rows including a first row of knots formed by the first constraining fiber interwoven with the second constraining fiber, and a second row of knots formed by the second constraining fiber interwoven with the third constraining fiber, a third row of knots formed by the third constraining fiber interwoven with the fourth constraining fiber, and a fourth row of knots formed by the fourth constraining fiber interwoven with the first constraining fiber.

10 . The apparatus of claim 9 , wherein at least one of the multiple knot rows forms a warp knit surrounding the medical device in the constrained configuration and another one of the multiple knot rows forms a non-warp knit surrounding the medical device in the constrained configuration.

11 . The apparatus of claim 1 , wherein the at least one first constraining fiber and the at least one second constraining fiber combine to form a deployment line.

12 . The apparatus of claim 1 , wherein the warp knit is configured to separate and be removed to deploy the medical device and the warp knit is arranged with the non-warp knit pattern interrupting the warp knit.

13 . A method of deploying constrained medical device, the method comprising:
arranging the medical device in a constraint, the constraint including at least one first constraining fiber arranged as a series of multiple loops to form a warp knit surrounding the medical device in a constrained configuration, the warp knit being configured to separate and be removed to deploy the medical device and at least one second constraining fiber arranged with the at least one first constraining fiber, the at least one second constraining fiber having at least one loop arranged in a non-warp knit pattern including a chain-link stitch; and unravelling the constraint by applying tension to an end of the at least one second constraining fiber.

14 . The method of claim 13 , wherein the at least one loop arranged in the non-warp knit pattern is arranged in a chain-link stitch.

15 . The method of claim 13 , wherein a first row of knots is formed by the at least one first constraining fiber in the warp knit pattern and a second row of knots is formed by the at least one second constraining fiber in a non-warp knit pattern.

16 . A medical device deployment apparatus, the apparatus comprising:
an implantable medical device; a constraint configured to releasably constrain the implantable medical device in a constrained configuration, the constraint including:
a first row of knots formed by a first constraining fiber interwoven with a second constraining fiber to form a warp knit surrounding the medical device in the constrained configuration, and
a second row of knots formed by the second constraining fiber interwoven with a third constraining fiber to form a non-warp knit, including a chain-link stitch surrounding the medical device in the constrained configuration; and
a deployment line coupled to the constraint and configured to unknit the constraint and deploy the implantable medical device from the constrained configuration.

17 . The apparatus of claim 16 , further comprising the third constraining fiber and a fourth constraining fiber, and wherein a third row of knots is formed by the third constraining fiber interwoven with the fourth constraining fiber, and a fourth row of knots is formed by the fourth constraining fiber interwoven with the first constraining fiber.

18 . The apparatus of claim 17 , wherein at least one of the third row of knots and the fourth row of knots forms a warp knit surrounding the medical device in the constrained configuration and another of the third row and the fourth row forms a non-warp knit surrounding the medical device in the constrained configuration.

19 . The apparatus of claim 16 , wherein an end of the first constraining fiber is joined with an end of the second constraining fiber to form the deployment line.

20 . The apparatus of claim 16 , wherein the constraint is circumferentially arranged about the implantable medical device and the deployment line is configured to axially interrupt the constraint to unknit the second constraining fiber.

Assignees

• Gore & Ass

Inventors

• Skelton Tyson J

Classifications

• D10B2509/06

  Vascular grafts; stents · CPC title

• D04B21/205

  Elongated tubular articles of small diameter, e.g. coverings or reinforcements for cables or hoses · CPC title

• D04B21/202

  warp knitted yarns · CPC title

• D04B19/00

  Unravelling knitted fabrics · CPC title

• A61F2/97 Primary

  the outer sleeve being splittable · CPC title