Tissue opening occluder

• US 20030028213A1
• Filed: 07/30/2002
• Published: 02/06/2003
• Est. Priority Date: 08/01/2001
• Status: Active Grant

• Current Assignee: ev3 Endovascular, Inc. (Medtronic Plc)
• Original Assignee: Microvena Corporation
• Inventors: Oman, Jana F., Barratt, Paul R., Young, Michelle M., Thill, Gary A.
• Granted Patent: US 7,288,105 B2
• Time in Patent Office: Days
• US Class Current: 606/200
• CPC Class Codes: A61B 17/0057 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 Class Codes: A61B 2017/00575 for closure at remote site, e.g. closing atrial septum defects
• CPC Class Codes: A61B 2017/00592 Elastic or resilient implements
• CPC Class Codes: A61B 2017/00597 Implements comprising a membrane
• CPC Class Codes: A61B 2017/00615 Implements with an occluder on one side of the opening and holding means therefor on the other
• CPC Class Codes: A61B 90/39 Markers, e.g. radio-opaque or breast lesions markers

Abstract

A tissue opening occluder comprising first and second occluder portions, each occluder portion including a frame structure and an attachment structure to attach one portion to the other portion. The frames may be utilized to constrain the tissue between the two portions enough to restrict the significant passage of blood therethrough. The frame portions may be covered by a fabric suspended from a perimeter thereof. The occluder portions are conjoined at least one point on each portion.

Claims

1. An occluder for placement through an opening in a tissue wall comprising first and second occluder portions, each occluder portion including a frame structure having a perimeter, and an attachment structure for attachment of one of said portions to the other of said portions, said occluder portions being attached at at least one discrete point on each portion, said attachment structure between said first and second occluder portions being configured and disposed to constrain a portion of the tissue wall between said portions.

2. The occluder of claim 1, wherein at least one of said frame structures has fabric suspended from the perimeter of said frame structure.

3. The occluder of claim 1, wherein at least one of said frame structures is oriented, when in position adjacent a tissue wall, such that a plane defined by the frame structure is substantially parallel to said tissue wall.

4. The occluder of claim 3, wherein at least one conjoined point within both of said frame structures is defined by a loop formed in said frame structures.

5. The occluder of claim 1, wherein one of said frames has a hook formed thereon for attachment of said frame to the tissue wall.

6. The occluder of claim 2, wherein each of said frame structures has fabric attached thereon, and wherein said fabric of each said frame structure is conjoined at a single location so as to define a center fabric attachment point for said occluder.

7. The occluder of claim 1, wherein said attachment between said two portions is provided by a single fiber of material.

8. The occluder of claim 7, wherein said attachment between said two portions is provided by a single fiber of wire material.

9. The occluder of claim 1, wherein said attachment between said two portions is provided by a plurality of fibers of material.

10. The occluder of claim 9, wherein said plurality of fibers are constructed to define two loops.

11. The occluder of claim 2, wherein said fabric comprises a polyester knit.

12. The occluder of claim 11, wherein said knit comprises a 30 denier polyester knit.

13. A reversibly deployable tissue opening occluder comprising an occluder panel and an anchor assembly extending therefrom, said occluder panel comprising a fabric support structure and fabric supported by a perimeter thereof, said anchor assembly comprising a planar wire anchor element adapted to be selectively manipulatable in furtherance of positioning and securing said occluder panel at a tissue opening situs, said wire anchor element being at least indirectly linked to a central portion of said fabric support structure, said occluder panel and said anchor assembly being thereby opposingly urged into engagement with the tissue opening in furtherance of closure.

14. The tissue opening occluder of claim 13 wherein said anchor assembly further includes a linkage, said linkage joining said planar wire anchor element to said occluder panel.

15. The tissue opening occluder of claim 14 wherein said linkage is capable of reversible elongation.

16. The tissue opening occluder of claim 15 wherein said linkage comprises a wire segment.

17. The tissue opening occluder of claim 15 wherein said linkage comprises a wire structure.

18. The tissue opening occluder of claim 15 wherein said linkage comprises at least a single loop.

19. The tissue opening occluder of claim 15 wherein said linkage comprises at least a single spring element.

20. The tissue opening occluder of claim 13 wherein said anchor assembly further includes a linkage, said linkage interposed between said planar wire anchor element and said occluder panel.

21. The tissue opening occluder of claim 20 wherein said linkage is capable of reversible elongation.

22. The tissue opening occluder of claim 20 wherein said linkage comprises a suture.

23. The tissue opening occluder of claim 20 wherein said linkage comprises a wire.

24. The tissue opening occluder of claim 20 wherein said linkage comprises a wire structure.

25. The tissue opening occluder of claim 20 wherein said linkage comprises at least a single loop.

26. The tissue opening occluder of claim 20 wherein said linkage comprises at least a single spring element.

27. The tissue opening occluder of claim 14 wherein said fabric support structure includes at least a single eyelet.

28. The tissue opening occluder of claim 27 wherein said at least a single eyelet comprises at least a single coil formed integral to said fabric support structure.

29. The tissue opening occluder of claim 28 wherein said eyelets are circular.

30. The tissue opening occluder of claim 28 wherein said eyelets are elongate forms.

31. The tissue opening occluder of claim 28 wherein said eyelets are angular forms.

32. The tissue opening occluder of claim 27 wherein at least one of said at least a single eyelet is located within said central portion of said fabric support structure

33. The tissue opening occluder of claim 32 wherein said anchor assembly extends from said at least one of said at least a single eyelet is located within said central portion of said fabric support structure.

34. The tissue opening occluder of claim 33 wherein said planar wire anchor element includes at least a single eyelet.

35. The tissue opening occluder of claim 34 wherein the planar wire anchor element eyelet is connected to the fabric support structure eyelet.

36. The tissue opening occluder of claim 35 wherein said wire anchor element includes at least a single tissue engaging hook.

37. Apparatus for occluding an opening in a tissue wall, comprising:

an occluder portion adapted for interposition in the opening, said occluder portion including a frame defining a perimeter;

a generally linearly extending anchor carried by said occluder portion, said anchor having opposite ends extending beyond said perimeter to engage the tissue wall and fix said occluder portion in the opening.

38. Apparatus of claim 37 wherein said anchor is integral with said frame.

39. Apparatus of claim 38 wherein said anchor and said frame are formed of nitinol.

40. Apparatus of claim 37 wherein said occluder portion is formed of a knit polyester.

41. A method of occluding an opening in a tissue wall, comprising the steps of:

collapsing an occluder assembly in a deployment catheter;

positioning the catheter proximate the tissue wall to deploy a first portion of the occluder assembly with a frame of the first portion in engagement with one side of the tissue wall; and

maneuvering the catheter to deploy a second portion of the occluder assembly with a frame of the second portion in engagement with an opposite side of the tissue wall and discrete points, one on each of the portions of the occluder assembly, interlinked through the opening in the tissue wall.

42. A method of occluding an opening in a tissue wall, comprising the steps of:

collapsing an occluder assembly in a deployment catheter;

positioning the catheter proximate the tissue wall to deploy a first portion of the occluder assembly with a frame of the first portion in engagement with one side of the tissue wall; and

maneuvering the catheter to deploy a wire frame anchor in engagement with an opposite side of the tissue wall, a discrete point on the first portion of the occluder assembly interlinked, through the opening in the tissue wall, with a discrete point on the wire frame anchor.

43. A method of occluding an opening in a tissue wall, comprising the steps of:

collapsing an occluder assembly in a deployment catheter, the occluder assembly including an occluder portion, having a frame, adapted for interposition in the opening, and a generally linearly extending anchor carried by said occluder portion, said anchor having opposite ends extending beyond said perimeter to engage the tissue wall;

positioning the catheter proximate the tissue wall; and

deploying the occluder assembly into the opening, wherein the ends of the anchor extending beyond the perimeter to engage the tissue wall and fix said occluder assembly in the opening.