Septal defect occluder

• US 6,214,029 B1
• Filed: 04/26/2000
• Issued: 04/10/2001
• Est. Priority Date: 04/26/2000
• Status: Expired due to Term

• Current Assignee: ev3 Endovascular, Inc.
• Original Assignee: Microvena Corporation
• Inventors: Gainor, John P., Thill, Gary A.
• Primary Examiner(s): Jackson, Gary
• Application Number:
  US09/558,717
• Time in Patent Office: 349 Days
• Field of Search: 606/213, 606/215
• US Class Current: 606/213
• 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 2017/00247 Making holes in the wall of the heart, e.g. laser Myocardial revascularization
• CPC Class Codes: A61B 2017/00526 Methods of manufacturing
• 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 2017/00606 Implements H-shaped in cross-section, i.e. with occluders on both sides of the opening
• CPC Class Codes: A61B 2017/00623 Introducing or retrieving devices therefor
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2018/00392 Transmyocardial revascularisation

Abstract

A septal defect occluder is provided having first and second occluder panels. Each occluder panel includes a fabric support structure and fabric suspended therefrom. The occluder panels are conjoined at a plurality of discrete points which are located within an area bounded by each perimeter of the fabric support structures, as well as on the fabric, to thereby form a defect conforming region for the occluder.

Claims

1. A tissue defect occluder comprising first and second occluder panels, each occluder panel including a fabric support structure and fabric suspended from a perimeter of said fabric support structure, the occluder panels being conjoined at a plurality of discrete points to thereby form a defect conforming region for said occluder, said discrete conjoined points being located within an area bounded within each perimeter of the fabric support structures.

2. The occluder of claim 1 wherein each said fabric support structure includes perimeter and traversing segments.

3. The occluder of claim 2 wherein the conjoined points within the fabric support structure comprise loops formed in the traversing segments of each of the fabric support structures, thereby defining internal eyelets for said support structures.

4. The occluder of claim 3 wherein said internal eyelets substantially delimit said defect conforming region.

5. The occluder of claim 4 wherein the fabric of each of said fabric support structures is conjoined at a single location so as to define a center fabric attachment point for said occluder.

6. The occluder of claim 5 wherein the perimeter segments of at least one of said fabric support structures include loops formed therein, thereby defining perimeter eyelets for said support structure, said perimeter eyelets aiding in the symmetrical collapse of said fabric support structure as during reversible retrieval of said device into a catheter.

7. The occluder of claim 6 wherein said internal eyelets are symmetrically oriented about said center fabric attachment point.

8. The occluder of claim 7 wherein said defect conforming region has a dimension greater than or equal to half the diametric dimension of said fabric support structures.

9. The occluder of claim 7 wherein said fabric comprises a polymeric material.

10. The occluder of claim 9 wherein said fabric comprises a polyester knit.

11. The occluder of claim 10 wherein said knit comprises a 20 denier polyester knit.

12. The occluder of claim 9 wherein said occluder panels are substantially round.

13. A septal defect occluder comprising first and second occluder panels, each panel including a fabric support structure and fabric substantially affixed to a perimeter thereof, said fabric support structure comprising cooperating frames, the occluder panels being conjoined at internal frame points located within the perimeter of each of the fabric support structures, the fabric of each of said fabric support structures being joined so as to form a generally central fabric attachment point.

14. The occluder of claim 13 wherein each of the cooperating frames has an axis of maximum dimension and an axis of minimum dimension.

15. The occluder of claim 13 wherein the cooperating frames are perpendicularly overlaying, the axis of maximum dimension of one frame substantially aligning with the axis of minimum dimension of the other frame.

16. The occluder of claim 15 wherein the internal frame points comprise loops formed in each of said frames along the axis of minimum dimension, thereby defining internal eyelets for each of the fabric support structures.

17. The occluder of claim 16 wherein the frames of one of said fabric support structures comprise loops formed along said axis of maximum dimension, thereby defining perimeter eyelets for said support structure.

18. The occluder of claim 17 wherein said perimeter eyelets cooperatively engage means for urging said occluder from a catheter for reversible deployment in and about a septal defect site.

19. The occluder of claim 18 wherein said fabric comprises a polymeric material.

20. The occluder of claim 19 wherein said fabric comprises a polyester knit.

21. The occluder of claim 20 wherein said fabric comprises a 20 denier polyester knit.

22. The occluder of claim 19 wherein said occluder panels are substantially round.

23. A self-centering septal defect occluder retrievable into a delivery catheter for deployment in and about a septal defect site, said occluder being repetitively redeployable and comprising first and second occluder panels, each panel including a fabric support structure and fabric suspended about a perimeter thereof, said fabric support structure comprising a pair of perpendicularly arranged frames, each of the occluder panels being conjoined at aligned internal frame points positioned substantially within the perimeter of each of the fabric support structures, the fabric of each of said fabric support structures being joined together so as to form a center fabric attachment point, one of said fabric support structures having opposing loops formed in the frames thereof so as to define perimeter eyelets for said structure so as to aid in the symmetrical collapse of said fabric support structure during reversible deployment from a catheter.

24. The occluder of claim 23 wherein each of said frames have a maximum and minimum dimension.

25. The occluder of claim 24 wherein said aligned internal frame points comprise loops formed in the frame, thereby defining internal eyelets for each of said fabric support frames, said internal eyelets delimiting said minimum dimension of each of said frames.