Tissue retraction devices and related methods of use

Patent metadata

Field	Value
Publication number	US-11364044-B2
Application number	US-201916427486-A
Country	US
Kind code	B2
Filing date	May 31, 2019
Priority date	Oct 15, 2015
Publication date	Jun 21, 2022
Grant date	Jun 21, 2022

Abstract

The present disclosure is directed to a medical instrument. The medical instrument may include a delivery device and a retraction mechanism including a target tissue anchor and a first stabilizing anchor, wherein the target tissue anchor attaches to target tissue and connects to the delivery device.

First claim

What is claimed is:

1. A retractor comprising:
a delivery device; and
a target tissue anchor,
wherein:
in a first configuration, a first portion and a second portion of the target tissue anchor are each coupled to an external surface of the delivery device at a first connection location and a second connection location, respectively, a third portion of the target tissue anchor, between the first portion and the second portion, is not coupled to the external surface, and the second portion of the target tissue anchor is releasably coupled to the external surface at the second connection location via a dock, wherein the dock is fixedly coupled to a distal portion of the delivery device; and

in a second configuration, a radial distance between a central longitudinal axis of the delivery device and the second portion is greater than the radial distance in the first configuration, and the target tissue anchor is released from a proximal-facing opening of the dock, and wherein the target tissue anchor is transitioned from the first configuration to the second configuration by pulling the target tissue anchor in a proximal direction.

2. The retractor of claim 1 , wherein the first connection location is proximal of an articulation segment of the delivery device.

3. The retractor of claim 2 , wherein the second connection location is on a surface of the articulation segment.

4. The retractor of claim 1 , wherein the target tissue anchor includes shape-memory material.

5. The retractor of claim 1 , wherein the first portion of the target tissue anchor is coupled to the external surface of the delivery device at the first connection location such that a radial distance between the first portion and the central longitudinal axis of the delivery device is the same in the first and second configurations.

6. The retractor of claim 1 , wherein, in the first configuration, the second portion of the target tissue anchor is disposed in the proximal-facing opening, and in the second configuration, the second portion of the target tissue anchor is not disposed in the proximal-facing opening.

7. The retractor of claim 1 , wherein the target tissue anchor includes one of a clip, a suture, a corkscrew, a spike, a hook, a grasper, a staple, an adhesive, a loop, a spiral loop, and a helical loop.

8. The retractor of claim 1 , wherein the target tissue anchor is biased in a direction away from the delivery device.

9. The retractor of claim 1 , wherein the dock is integrally formed with the delivery device.

10. The retractor of claim 1 , wherein the target tissue anchor is steerable.

11. A retractor comprising:
a delivery device having an articulation segment that permits a distal end of the delivery device to articulate in at least one direction; and
a target tissue anchor, wherein a first portion of the target tissue anchor is coupled to an external surface of the delivery device at a first connection location proximal of the articulation segment such that the first portion has a fixed, unchangeable radial distance from a central longitudinal axis of the delivery device;
wherein, in a first configuration, a second portion of the target tissue anchor, which is distal to the first portion, is releasably coupled to the external surface at a second connection location via a dock fixedly coupled to a distal portion of the delivery device, and wherein, in a second configuration, the second portion of the target tissue anchor is released from the dock, and wherein the target tissue anchor is transitioned from the first configuration to the second configuration by pulling a wire fixed to the second portion of the target tissue anchor in a proximal direction.

12. The retractor of claim 11 , wherein, in the second configuration, a radial distance between the second portion and the central longitudinal axis of the delivery device is greater than the radial distance in the first configuration.

13. The retractor of claim 11 , wherein the dock includes a proximal-facing cavity, and wherein, in the first configuration, the second portion of the target tissue anchor is disposed in the proximal-facing cavity, and in the second configuration, the second portion of the target tissue anchor is not disposed in the proximal-facing cavity.

14. The retractor of claim 11 , wherein the target tissue anchor is biased in a direction away from the delivery device.

15. The retractor of claim 11 , wherein the target tissue anchor includes one of a clip, a suture, a corkscrew, a spike, a hook, a grasper, a staple, an adhesive, a loop, a spiral loop, and a helical loop.

16. The retractor of claim 11 , wherein the dock is integrally formed with the delivery device.

17. A retractor comprising:
a delivery device having an articulation segment that permits a distal end of the delivery device to articulate in at least one direction; and
a target tissue anchor,
wherein:
in a first configuration, a first portion of the target tissue anchor is coupled to an external surface of the delivery device at a first connection location proximal of the articulation segment, a second portion of the target tissue anchor is coupled to the external surface of the delivery device at a second connection location distal to the first connection location, and the second portion of the target tissue anchor is releasably coupled to the external surface at the second connection location via a dock fixedly coupled to a distal portion of the delivery device; and
in a second configuration, a radial distance between a central longitudinal axis of the delivery device and the second portion is greater than the radial distance in the first configuration, and the target tissue anchor is released from the dock by pulling a wire fixed to the second portion of the target tissue anchor in a proximal direction.

18. The retractor of claim 17 , wherein the dock includes a proximal-facing cavity, and wherein, in the first configuration, the second portion of the target tissue anchor is disposed in the proximal-facing cavity, and in the second configuration, the second portion of the target tissue anchor is not disposed in the proximal-facing cavity.

19. The retractor of claim 17 , wherein the target tissue anchor is biased in a direction away from the delivery device.

20. The retractor of claim 17 , wherein the target tissue anchor includes one of a clip, a suture, a corkscrew, a spike, a hook, a grasper, a staple, an adhesive, a loop, a spiral loop, and a helical loop.

Assignees

• Boston Scient Scimed Inc

Inventors

• Smith Paul
• Charles Robert
• Taylor Jon
• Hamilton Daniel E
• Raybin Samuel
• Devries Robert
• Andersson Niklas
• Soens Meghan E
• Cornell Mary Ann
• Tong Ray
• Golden John

Classifications

• A61B17/122

  Clamps or clips, e.g. for the umbilical cord {(for the vas deferens A61F6/206)} · CPC title

• A61B17/04

  for suturing wounds; Holders or packages for needles or suture materials · CPC title

• A61B2017/00269

  endoscopic mucosal resection EMR · CPC title

• A61B17/0218

  for minimally invasive surgery (A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence) · CPC title

• A61B17/320016

  Endoscopic cutting instruments, e.g. arthroscopes, resectoscopes (A61B10/0233, A61B17/29, A61B17/3207 take precedence) · CPC title