Occlusive device with expandable member

Patent metadata

Field	Value
Publication number	US-10952741-B2
Application number	US-201816223731-A
Country	US
Kind code	B2
Filing date	Dec 18, 2018
Priority date	Dec 18, 2017
Publication date	Mar 23, 2021
Grant date	Mar 23, 2021

Abstract

An example medical device for occluding the left atrial appendage includes an expandable member having a first end region, a second end region and an inflation cavity. The medical device also includes a plurality of spine members coupled to the expandable member, the plurality of spine members spaced circumferentially around an outer surface of the expandable member. Additionally, the medical device includes a valve member extending at least partially into the inflation cavity, wherein the plurality of spine members are configured to position the medical device within an opening of the left atrial appendage and wherein the expandable member is configured to expand and seal the opening of the left atrial appendage.

First claim

What is claimed is:

1. A medical device for occluding the left atrial appendage, comprising:
an expandable member having a first end region, a second end region and an inflation cavity;
a plurality of spine members coupled to the expandable member, the plurality of spine members spaced circumferentially around an outer surface of the expandable member; and
a valve member extending at least partially into the inflation cavity;
wherein the plurality of spine members are configured to position the medical device within an opening of the left atrial appendage;
wherein the expandable member is configured to expand and seal the opening of the left atrial appendage;
wherein at least a portion of each of the spine members extends at least partially inside a wall of the expandable member.

2. The medical device of claim 1 , wherein each of the spine members extends along a longitudinal axis of the medical device from the first end region to the second end region.

3. The medical device of claim 2 , wherein the second end region includes a bottom surface and wherein at least a portion of each of the spine members is positioned along the bottom surface.

4. The medical device of claim 2 , wherein the expandable member includes a curved portion extending radially inward toward the longitudinal axis, and wherein the curved portion is configured to nest with the opening of the left atrial appendage.

5. The medical device of claim 1 , wherein a portion of each of the spine members is positioned along an outer surface of the expandable member.

6. The medical device of claim 1 , wherein the first end region of the expandable member extends toward a longitudinal axis of the medical device to form an apex.

7. The medical device of claim 1 , wherein the second end region includes a coating, and wherein the coating is designed to promote endothelial cell growth.

8. The medical device of claim 1 , further comprising a fixation member configured to anchor the medical device to a target tissue site of the left atrial appendage.

9. The medical device of claim 8 , wherein the fixation member includes a plurality of bristles projecting away from an outer surface of the expandable member.

10. The medical device of claim 8 , wherein the fixation member includes a barb projecting away from an outer surface of the expandable member.

11. A medical device for occluding the left atrial appendage, comprising:
an expandable balloon including an outer surface and an inner expansion cavity;
a plurality of positioning members coupled to the expandable balloon;
a fixation member extending away from the outer surface of the expandable balloon;
wherein the plurality of positioning members are configured to position the medical device within an opening of the left atrial appendage;
wherein the expandable balloon is configured to expand and seal the opening of the left atrial appendage;
wherein each of the positioning members is embedded within a wall of the balloon.

12. The medical device of claim 11 , wherein each of the positioning members extends along a longitudinal axis of the balloon from a first end region of the balloon to a second end region of the balloon.

13. The medical device of claim 12 , wherein the second end region of the balloon includes a bottom surface and wherein at least a portion of each of the positioning members is positioned along the bottom surface.

14. The medical device of claim 12 , wherein the second end region includes a coating, and wherein the coating is designed to promote endothelial cell growth.

15. The medical device of claim 11 , wherein the fixation member includes a plurality of bristles projecting away from an outer surface of the balloon.

16. The medical device of claim 11 , wherein the fixation member includes a barb projecting away from an outer surface of the balloon.

17. A method for sealing the left atrial appendage, the method comprising:
advancing an expandable occluder to a position adjacent the left atrial appendage, wherein the expandable occluder includes:
an expandable balloon including an inflation cavity;
a plurality of spine members at least a portion of each of the spine members being embedded within surrounded by a wall of the balloon, wherein the spine members are spaced circumferentially around an outer surface of the expandable balloon; and
a valve member extending at least partially into the inflation cavity;

inserting a tubular member into the valve;
passing an inflation media through the tubular member into the valve; and
inflating the expandable member to a first position such that the plurality of spine members position the occluder within an opening of the left atrial appendage.

18. The method of claim 17 , further comprising:
inflating the expandable member to a second position in which the expandable member seals against an inner surface of the left atrial appendage.

19. The method of claim 17 , wherein the wall is defined by an outer surface and an inner surface, wherein the inner surface forms the inflation cavity.

Assignees

• Boston Scient Scimed Inc

Inventors

• Anderson James M
• Edgell John M
• Meregotte Jose A
• Larsen Steven R
• Raab David
• Hoffman Peter John
• Onushko David John

Classifications

• A61B17/12122 Primary

  within the heart (for closing a cardiac septal defect A61B17/0057) · CPC title

• A61B2017/12054

  Details concerning the detachment of the occluding device from the introduction device · CPC title

• A61B17/12136

  Balloons · CPC title

• A61B17/12031

  complete occlusion · CPC title

• A61B17/0057

  Implements for plugging an opening in the wall of a hollow or tubular organ, e.g. for sealing a vessel puncture or closing a cardiac septal defect (sutures A61B17/04; closing rectum or urethra near body surface A61F2/0009) · CPC title