Dynamic annulus heart valve employing preserved porcine valve leaflets

• US 5,449,384 A
• Filed: 09/28/1992
• Issued: 09/12/1995
• Est. Priority Date: 09/28/1992
• Status: Expired due to Term

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Johnson, Keith M.
• Primary Examiner(s): ISABELLA, DAVID J
• Application Number:
  US07/952,111
• Time in Patent Office: 1,079 Days
• Field of Search: 623/2, 623/900, 623/901
• US Class Current: 623/2.14
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable

Abstract

A prosthetic heart valve having a frame comprising a plurality of struts joined together at a common point and extending radially from the common point to free ends spaced from one another and a plurality of preserved tissue valve leaflets, each having a free edge, mounted to said frame means such that said free edges of said leaflets extend between the free ends of said frame struts. Each of the leaflets are provided with an associated strip of aortic tissue and the strips of aortic tissue are joined to one another to enclose the frame struts so that no synthetic materials are exposed to the bloodstream with the exception of suture material used to join the adjacent strips of aortic tissue.

Claims

1. A prosthetic heart valve, comprising:

a flexible frame means comprising a plurality of arcuate frame struts joined together at a common point and extending radially from said common point to free ends spaced from one another; and

a plurality of preserved natural heart valve leaflets, each having a first free edge, mounted to said frame means such that said free edges of said leaflets extend between the said free ends of said frame struts wherein said leaflets are each provided with a second edge, having an associated strip of aortic tissue and wherein said strips of aortic tissue are joined to one another to enclose said frame struts.

2. A valve according to claim 1 wherein each of said frame struts is provided with suturing means for allowing passage of sutures therethrough and wherein said strips of aortic tissue are joined to one another to cover said suturing means.

3. A valve according to claim 1 further comprising sutures, joining said strips of aortic tissue to one another.

4. A valve according to claim 1 wherein said strips of aortic tissue have edges and are joined to one another such that no said edges of said aortic tissue are exposed.

5. A prosthetic heart valve, comprising:

a flexible frame means; and

a plurality of preserved natural heart valve leaflets each provided with an edge having an associated strip of aortic tissue and wherein said strips of aortic tissue are joined to one another to enclose said frame.

6. A prosthetic heart valve according to claim 5 wherein said strips of aortic tissue completely enclose said frame.

7. A valve according to claim 6 or claim 6 wherein said strips of aortic tissue have edges and are joined to one another such that no said edges of said aortic tissue are exposed.

8. A valve according to claim 5 or claim 6 wherein said frame is provided with suturing means for allowing passage of sutures therethrough and wherein said strips of aortic tissue are joined to one another to cover said suturing means.