Prosthetic heart valve stent utilizing mounting clips

• US 5,910,170 A
• Filed: 12/17/1997
• Issued: 06/08/1999
• Est. Priority Date: 12/17/1997
• Status: Expired due to Term

• Current Assignee: St Jude Medical Incorporated (Abbott Laboratories Incorporated)
• Original Assignee: St Jude Medical Incorporated (Abbott Laboratories Incorporated)
• Inventors: Reimink, Matthew S., Girard, Michael J., Schroeder, Richard F., Mirsch, M. William II
• Primary Examiner(s): Willse, David H.
• Application Number:
  US08/992,595
• Time in Patent Office: 538 Days
• Field of Search: 623/2, 623/900
• US Class Current: 623/2.38
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2220/0041 using additional screws, bolts, dowels or rivets, e.g. connecting screws
• CPC Class Codes: A61F 2220/005 using adhesives
• CPC Class Codes: A61F 2220/0058 soldered or brazed or welded
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: Y10S 623/90 Stent for heart valve

Abstract

The present invention includes a prosthetic heart valve having a stent and a piece of biocompatible material. The stent includes an inflow ring and a plurality of posts, each post extending from the ring to a post tip. The piece of material extends over the stent and substantially conforms to a profile of the stent. The piece of material includes a portion which extends adjacent a post tip. A clip is provided which has a shape generally conforming to the post tip to thereby clamp the portion of the piece of material to the post tip.

Claims

1. A prosthetic heart valve, comprising:

a stent having an inflow ring and a plurality of posts, each post extending from the ring to a post tip;

biocompatible leaflet material extending over the stent and substantially conforming to a profile of the stent, the material including a plurality of portions each of which extends adjacent a post tip; and

a clip having a shape generally conforming around one of the plurality of posts to clamp one of the portions of the material to the one of the plurality of posts.

2. The prosthetic heart valve of claim 1 including a post tip knob located at the post tip to maintain the clip on the one of the plurality of posts.

3. The prosthetic heart valve of claim 1 wherein the clip has an elongated generally `C` shape.

4. The prosthetic heart valve of claim 3 wherein the clip substantially conforms to a profile of the one of the plurality of posts.

5. The prosthetic heart valve of claim 1 wherein the clip comprises a polymer.

6. The prosthetic heart valve of claim 1 wherein the stent comprises a polymer.

7. The prosthetic heart valve of claim 1 wherein the clip comprises a metal.

8. The prosthetic heart valve of claim 1 including a means for coupling the clip to the stent proximate the ring.

9. The prosthetic heart valve of claim 8 including a suture coupling the clip to the one of the plurality of posts.

10. The prosthetic heart valve of claim 9 wherein the clip includes retaining holes to receive the suture therethrough.

11. The prosthetic heart valve of claim 9 wherein the stent includes an opening for receiving the suture therethrough.

12. The prosthetic heart valve of claim 1 including a plurality of clips to clamp respective, adjacent portions of material to each of the plurality of posts.

13. The prosthetic heart valve of claim 1 wherein the clip includes a segmented region formed therein and the material includes a tab which fits in the segmented region to aid alignment and ensure leaflet coaptation.

14. The prosthetic heart valve of claim 1 wherein the material moves between an open position and a closed position and the clip includes a curved side wall, the material pressing against the curved side wall when in the open position.

15. The prosthetic heart valve of claim 1 wherein each of the plurality of posts taper in a direction toward the post tip and the clip has a shape generally conforming to the taper.