DEVICE SYSTEM AND METHOD FOR RESHAPING TISSUE OPENINGS

• US 20130131710A1
• Filed: 01/03/2011
• Published: 05/23/2013
• Est. Priority Date: 01/11/2010
• Status: Abandoned Application

• Current Assignee: Assist Medical LLC
• Original Assignee: Assist Medical LLC
• Inventors: Carmeli, Ran, Teichman, Eyal, Kotlizky, Guy
• Application Number:
  US13/521,226
• Publication Number:
  US 20130131710A1
• Time in Patent Office: Days
• US Class Current: 606/194
• CPC Class Codes: A61B 17/0218 for minimally invasive surgery A61B17/0281, A61B17/0469, A61B17/12013, A61B17/1285, A61B17/29, A61B17/320016 take precedence
• CPC Class Codes: A61B 2017/00783 Valvuloplasty
• CPC Class Codes: A61B 2017/0225 flexible, e.g. fabrics, meshes, or membranes
• CPC Class Codes: A61M 29/02 Dilators made of swellable material balloon catheters for angioplasty A61M25/104

Abstract

A device for resizing/reshaping a tissue opening is provided. The device includes a cage structure which is positionable within the tissue opening and is radially expandable therein while enabling flow therethrough while it is fully expanded and biased against a tissue defining the tissue opening.

Claims

1. A device for resizing/reshaping a tissue opening comprising a cage structure being positionable within the tissue opening and being radially expandable therein via inflation of at least one balloon positioned within said cage structure, wherein the device enables flow of a biological fluid through the tissue opening when said at least one balloon is fully inflated and said cage structure is fully expanded and biased against a tissue defining the tissue opening.

2. The device of claim 1, wherein the tissue opening is a heart valve orifice and said biological fluid is blood.

3. The device of claim 1, wherein said cage structure is torpedo shaped.

4. The device of claim 3, wherein said at least one balloon includes two balloons positioned at an end portions of said torpedo shaped cage structure.

5. The device of claim 1, wherein said cage structure is radially expandable to a diameter of 20-40 mm

6. The device of claim 1, further comprising a valve for controlling flow of said biological fluid through the device.

7. The device of claim 1, where said at least one balloon is configured for reducing drag forces on flow of said biological fluid in one direction, while increasing said drag forces on said flow of said biological fluid in an opposite direction.

8. The device of claim 1, wherein the device is designed for compensating for changes in a length of said cage structure during radial expansion thereof.

9. The device of claim 8, wherein said cage structure includes elastic struts configured for compensating for changes in said length of said cage structure during radial expansion thereof.

10. The device of claim 1, wherein said cage structure is formed of longitudinal struts.

11. A device for resizing/reshaping a tissue opening comprising a cage structure being positionable within the tissue opening and being capable of a first radial expansion via an elastic structural change and a second radial expansion via mechanical expansion.

12. The device of claim 11, wherein said elastic structural change is effected by releasing a restraint maintaining said cage structure in a compressed state.

13. The device of claim 12, wherein said second radial expansion is effected by a mechanism being capable of radially expanding said cage structure without elastic deformation.

14. The device of claim 11, wherein said mechanism includes at least one balloon disposed within said cage structure.

15. The device of claim 11, wherein the device enables flow of a biological fluid through the tissue opening when said at least one balloon is fully inflated and said cage structure is fully expanded and biased against a tissue defining the tissue opening.

16. The device of claim 11, wherein said first radial expansion of said cage structure is up to a diameter of 20 mm

17. The device of claim 16, wherein said second radial expansion of said cage structure is up to a diameter of 40 mm

18-20. -20. (canceled)

21. A method of resizing/reshaping a tissue opening comprising:

(a) positioning a cage structure within said tissue opening;

(b) expanding said cage structure within the tissue opening thereby biasing outward tissue defining the tissue opening while enabling biological fluid to flow through the tissue opening, thereby resizing/reshaping the tissue opening; and

(c) controlling said flow through said cage structure.

25. The method of claim 21, wherein (b) is effected via at least one balloon position within said cage structure.

26. The method of claim 21, wherein the tissue opening is a heart valve orifice and said biological fluid is blood.

22-24. -24. (canceled)