Sutureless cuff for heart valves

• US 6,197,054 B1
• Filed: 09/01/1998
• Issued: 03/06/2001
• Est. Priority Date: 09/01/1998
• Status: Expired due to Term

• Current Assignee: Corcym SRL (LivaNova Plc)
• Original Assignee: Sulzer Carbomedics Inc. (Zimmer Biomet Holdings, Inc.)
• Inventors: Singleton, Billy Ray, Hamblin, James Henry Jr.
• Primary Examiner(s): Willse, David H.
• Application Number:
  US09/144,805
• Time in Patent Office: 917 Days
• Field of Search: 623/2, 623/900
• US Class Current: 623/2.38
• CPC Class Codes: A61B 17/0684 having a forming anvil staying above the tissue during stapling
• CPC Class Codes: A61B 2017/00243 cardiac
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442

Abstract

An improved mechanical heart valve that reduces the time required to perform heart valve replacement surgery is provided. The mechanical heart valve is comprised of a valve body and a plurality of staples extending around the valve body that are coupled to the valve body through at least one intermediate member.

Claims

1. A mechanical heart valve comprising;

a valve body;

a backing plate coupled to said valve body;

a plurality of staples for engaging a heart, said staples extending from and fixedly attached to said backing plate; and

a cuff coupled to said valve body.

2. The mechanical heart valve of claim 1, wherein said heart valve further comprises:

a stiffening ring coupled to said valve body;

a plurality of capture rings engageable with said stiffening ring;

and a lock wire engageable with said stiffening ring and said valve body,

wherein said backing plate is coupled to said valve body by said cuff.

3. The mechanical heart valve of claim 1, wherein said heart valve further comprises:

a stiffening ring coupled to said valve body;

a capture ring coupling said cuff to said stiffening ring; and

a lock wire coupling said stiffening ring and said valve body;

wherein said cuff is positioned around at least a portion of said stiffening ring and said backing plate.

4. The mechanical heart valve of claim 1, wherein said backing plate is rigid.

5. A mechanical heart valve comprising:

a valve body;

a stiffening ring coupled to said valve body;

a backing plate coupled to said stiffening ring; and

a plurality of staples positioned on said backing plate.

6. The mechanical heart valve of claim 5, wherein said plurality of staples are attached to said backing plate.

7. The mechanical heart valve of claim 5, wherein said plurality of staples are formed integrally with said backing plate.

8. The mechanical heart valve of claim 5, further comprising a fabric material positioned around at least a portion of said backing plate and said staples.

9. The mechanical heart valve of claim 5, wherein said staples have equal radial spacings ranging from approximately 30 to 40 degrees.

10. The mechanical heart valve of claim 5, wherein said staples may vary in number from 9-12, inclusive.

11. The mechanical heart valve of claim 5, wherein said staples have a circular cross-section.

12. The mechanical heart valve of claim 5, wherein said staples have first and second ends, said first and second ends being spaced apart a distance ranging from approximately 0.375″

-0.5″

prior to the heart valve being installed in a patient.

13. A mechanical heart valve, comprising:

a valve body;

a stiffening ring adapted for coupling to said valve body; and

a backing plate adapted for coupling to said stiffening ring, said backing plate having a perimeter and a plurality of staples attached to said backing plate, said plurality of staples extending around the perimeter of said backing plate.

14. The mechanical heart valve of claim 13, wherein said plurality of staples are equally spaced around the perimeter of said backing plate.

15. The mechanical heart valve of claim 13, further comprising a fabric material positioned around at least a portion of said stiffening ring and at least some of said staples.

16. The mechanical heart valve of claim 13, wherein said staples have equal radial spacings ranging from approximately 30 to 40 degrees.

17. The mechanical heart valve of claim 13, wherein said staples may vary in number from 9-12, inclusive.

18. The mechanical heart valve of claim 13, wherein said staples have a circular cross-section.

19. The mechanical heart valve of claim 13, wherein said staples have first and second ends, said first and second ends being spaced apart a distance ranging from approximately 0.375″

-0.5″

prior to the heart valve being installed in a patient.

20. A mechanical heart valve comprising:

a valve body;

a rigid ring coupled to said valve body, said ring having a perimeter and a plurality of staples attached to said ring and extending around the perimeter of said ring, each of said staples having a first end and a second end, said first and second ends being opposed to each other and being displaced towards each other to engage cardiac tissue.

21. The mechanical heart valve of claim 20, wherein said ring is a stiffening ring.

22. The mechanical heart valve of claim 20, wherein said plurality of staples are equally spaced around the perimeter of said ring.

23. The mechanical heart valve of claim 20, further comprising a fabric material positioned around at least a portion of said ring and at least some of said staples.

24. The mechanical heart valve of claim 20, wherein said staples have equal radial spacings ranging from approximately 30 to 40 degrees.

25. The mechanical heart valve of claim 20, wherein said staples may vary in number from 9-12, inclusive.

26. The mechanical heart valve of claim 20, wherein said staples have a circular cross-section.

27. The mechanical heart valve of claim 20, wherein, said first and second ends are spaced apart a distance ranging from approximately 0.375″

-0.5″

prior to the heart valve being installed in a patient.

28. A mechanical heart valve comprising:

a valve body;

a backing plate coupled to said valve body;

a plurality of staples extending from and fixedly attached to said backing plate.

29. A mechanical heart valve comprising:

a valve body;

a lock wire;

a stiffening ring coupled to said valve body by said lock wire; and

a plurality of staples extending from and fixedly attached to said stiffening ring.

30. A mechanical heart valve comprising:

a valve body,

a rigid first member coupled to said valve body, and

a plurality of staples extending from and fixedly attached to said first member, each of said staples having a first end and a second end, said first and second ends being opposed to each other and being displaced towards each other to engage cardiac tissue.

31. A mechanical heart valve comprising;

a valve body;

a first member coupled to said valve body;

a plurality of staples for engaging a heart, said staples extending from and fixedly attached to said first member, said first member being coupled to said valve body;

each staple having a first end and a second end, said first and second ends opposing each other and being displaced towards each other to engage the heart; and

a cuff coupled to said valve body.

32. The mechanical heart valve of claim 31, wherein said first member comprises a stiffening ring.

33. The mechanical heart valve of claim 32, wherein said stiffening ring is coupled to said valve body by a lock wire.

34. The mechanical heart valve of claim 31 wherein said valve body has an inflow side and an outflow side and wherein said first ends of said staples are near said inflow side before said first ends are displaced to engage the heart and said second ends of said staples are near said outflow side before said second ends are displaced to engage the heart.