Medical device fixation anchors

Patent metadata

Field	Value
Publication number	US-9333101-B2
Application number	US-201414521203-A
Country	US
Kind code	B2
Filing date	Oct 22, 2014
Priority date	Sep 16, 2011
Publication date	May 10, 2016
Grant date	May 10, 2016

Abstract

An implantable medical device includes a frame that includes at least one elongate member. The implantable medical device also includes a fixation member that has a first cuff, a second cuff, a tissue engagement member configured to anchor to tissue at an implant site to thereby hold the implantable medical device in a position at the implant site, and a cuff joining member that has an arcuate shape and that is connected at a first end to the first cuff and at a second end to the second cuff. The first cuff substantially surrounds a perimeter of a first portion of the at least one elongate member, the second cuff substantially surrounds a perimeter of a second portion of the at least one elongate member, and the cuff joining member does not substantially surround a perimeter of any portion of the at least one elongate member.

First claim

What is claimed is:

1. An implantable medical device, comprising:
a frame comprised of at least one elongate member; and
a fixation member engaged with the at least one elongate member, the fixation member comprising:
a first cuff surrounding a perimeter of the at least one elongate member from between 180° to 360°;
a second cuff surrounding the perimeter of the at least one elongate member from between 180° to 360°;
a first tissue engagement member configured to anchor to tissue at an implant site to thereby hold the implantable medical device in a position at the implant site; and
a cuff joining member connected at a first end to the first cuff and at a second end to the second cuff,

the fixation member configured such that, in response to a bending of the at least one elongate member to create a bend portion, the cuff joining member seeks alignment with an inside curvature of the bend portion,
and wherein the cuff joining member surrounds the perimeter of the at least one elongate member by less than about 180°.

2. The implantable medical device of claim 1 , wherein the first tissue engagement member is configured to penetrate the tissue at the implant site.

3. The implantable medical device of claim 1 , wherein the first tissue engagement member is configured to contact, without penetrating, the tissue at the implant site.

4. The implantable medical device of claim 1 , wherein the cuff joining member defines an arcuate shape.

5. The implantable medical device of claim 4 , wherein the first tissue engagement member extends from the first cuff, and wherein the fixation member further comprises a second tissue engagement member that extends from the second cuff.

6. The implantable medical device of claim 5 , wherein the first tissue engagement member extends towards the frame of the implantable medical device, and wherein the second tissue engagement member extends away from the frame of the implantable medical device.

7. The implantable medical device of claim 5 , wherein the first tissue engagement member extends towards the frame of the implantable medical device, and wherein the second tissue engagement member extends towards the frame of the implantable medical device.

8. The implantable medical device of claim 5 , wherein the first tissue engagement member extends away from the frame of the implantable medical device, and wherein the second tissue engagement member extends away from the frame of the implantable medical device.

9. The implantable medical device of claim 1 , wherein one of the first cuff or the second cuff has an inner diameter that is larger than an outer diameter of the at least one elongate member, and the other of first cuff or the second cuff is fixedly attached to the at least one elongate member.

10. The implantable medical device of claim 1 , wherein the first cuff and the second cuff both have inner diameters that are larger than an outer diameter of the at least one elongate member.

11. The implantable medical device of claim 1 , wherein the fixation member further comprises a second tissue engagement member, and wherein the first and second tissue engagement members both extend from either the first cuff or the second cuff.

12. The implantable medical device of claim 11 , wherein the first and second tissue engagement members each extend towards the frame of the implantable medical device.

13. The implantable medical device of claim 11 , wherein the first and second tissue engagement members each extend away from the frame of the implantable medical device.

14. The implantable medical device of claim 1 , wherein the first cuff and the second cuff are respectively positioned on opposite sides of the bend portion.

15. The implantable medical device of claim 1 , wherein the first cuff defines a first lumen through the first cuff, the second cuff defines a second lumen through the second cuff, and wherein a first axis coincident with the first lumen is not collinear with a second axis coincident with the second lumen.

16. The implantable medical device of claim 15 , wherein the first axis and the second axis intersect at an angle in the range of 10-80 degrees.

17. The implantable medical device of claim 15 , wherein the first axis and the second axis intersect at an angle in the range of 20-70 degrees.

18. The implantable medical device of claim 15 , wherein the first axis and the second axis intersect at an angle in the range of 30-60 degrees.

19. The implantable medical device of claim 1 , wherein the at least one elongate member comprises a wire.

20. The implantable medical device of claim 19 , wherein the wire comprises nitinol.

21. The implantable medical device of claim 1 , wherein the fixation member comprises a nitinol tube from which the first cuff, the second cuff, the cuff joining member, and the first tissue engagement member are formed.

Assignees

• Gore & Ass
• Gore & Ass

Inventors

• Shaw Edward E

Classifications

• A61B2017/00632

  Occluding a cavity, i.e. closing a blind opening · CPC title

• A61B2017/00592

  Elastic or resilient implements · CPC title

• A61F2/86

  Stents in a form characterised by the wire-like elements; Stents in the form characterised by a net-like or mesh-like structure · CPC title

• A61F2/848 Primary

  having means for fixation to the vessel wall, e.g. barbs · CPC title

• A61B2017/00867

  shape memory effect · CPC title