Suture locking assembly and method of use

• US 7,959,674 B2
• Filed: 03/03/2004
• Issued: 06/14/2011
• Est. Priority Date: 07/16/2002
• Status: Expired due to Fees

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Medtronic Incorporated (Medtronic Plc)
• Inventors: Campbell, Louis A., Coppin, Chris, Shu, Mark
• Primary Examiner(s): Stewart; Alvin J
• Application Number:
  US10/792,186
• Publication Number:
  US 20040210305A1
• Time in Patent Office: 2,659 Days
• Field of Search: 623 21- 242
• US Class Current: 623/2.4
• CPC Class Codes: A61F 2/2409 Support rings therefor, e.g. for connecting valves to tissue annuloplasty rings A61F2/2442
• CPC Class Codes: A61F 2/2412 with soft flexible valve members, e.g. tissue valves shaped like natural valves check valves with flexible valve members in general F16K15/14
• CPC Class Codes: A61F 2/2415 Manufacturing methods
• CPC Class Codes: A61F 2/2418 Scaffolds therefor, e.g. support stents
• CPC Class Codes: A61F 2/2445 Annuloplasty rings in direct contact with the valve annulus
• CPC Class Codes: A61F 2220/0016 with sharp anchoring protrusions, e.g. barbs, pins, spikes
• CPC Class Codes: A61F 2220/0075 sutured, ligatured or stitched, retained or tied with a rope, string, thread, wire or cable
• CPC Class Codes: A61F 2250/001 for adjusting a diameter
• CPC Class Codes: A61F 2250/006 modular

Abstract

A suture locking assembly for use with a heart valve repair device. The suture locking assembly including a rim and a suture band. The rim defines a first flange and a second flange spaced from the first flange. The rim is configured to extend at least partially around a periphery of the heart valve repair device. The suture band is maintained between the first flange and the second flange. The suture locking assembly is configured to securely maintain a suture segment that is pulled from a first position to a second position relative the suture locking assembly, the second position being at least partially defined near an outer periphery of the rim.

Claims

1. A suture locking assembly for use with a heart valve repair device, the suture locking assembly comprising:

a rim defining a first flange and a second flange spaced from the first flange, the rim configured to extend at least partially around a periphery of the heart valve repair device; and

a suture band maintained between the first flange and the second flange;

wherein relative to a circumferential interface between the rim and the suture band, a radial spacing between the rim and the suture band decreases from a first radial spacing to a second radial spacing, the second radial spacing being circumferential adjacent the first radial spacing;

wherein the suture locking assembly is configured to securely maintain a suture segment that is circumferentially pulled relative to at least one of the flanges from a first position at the first radial spacing to a second position at the second radial spacing, the second position being at least partially defined near an outer periphery of the rim.

2. The suture locking assembly of claim 1, wherein the suture locking assembly is configured such that the suture segment is at least partially positioned between the suture band and the rim in the second position.

3. The suture locking assembly of claim 1, wherein the suture locking assembly is configured such that the suture segment is at least partially positioned between the suture band and the rim in both the first and second positions.

4. The suture locking assembly of claim 1, wherein the rim defines a plurality of recesses, each of the plurality of recesses defining the first position for one of the at least one sutures.

5. The suture locking assembly of claim 4, wherein the rim defines a plurality of stop sites, each of the plurality of stop sites being spaced from each of the plurality of recesses and impeding suture movement from the second position to the first position.

6. The suture locking assembly of claim 5, wherein each of the plurality of stop sites defines the second position for at least one suture segment.

7. The suture locking assembly of claim 1, wherein the rim defines a plurality of segments, each segment defining a recess and at least one stop site.

8. The suture locking assembly of claim 7, wherein the suture locking assembly is configured to receive a suture in each of the plurality of segments.

9. The suture locking assembly of claim 7, wherein the suture locking assembly is configured to receive two sutures in each of the plurality of segments.

10. The suture locking assembly of claim 1, wherein the rim and the suture band are each a closed ring.

11. The suture locking assembly of claim 1, wherein the rim is integrally formed with the heart valve repair device.

12. The suture locking assembly of claim 11, wherein the rim is homogenously formed with a stent of the heart valve repair device.

13. The suture locking assembly of claim 1, wherein the rim is formed separately from the heart valve repair device.

14. The suture locking assembly of claim 1, wherein the rim is formed of plastic.

15. The suture locking assembly of claim 1, wherein the suture band and rim are configured to secure a heart valve repair device to a valvular rim.

16. The suture locking assembly of claim 15, wherein the suture locking assembly is configured to be positioned adjacent a sewing ring of the heart valve repair device.

17. The suture locking assembly of claim 15, wherein the heart valve repair device is a tissue heart valve mechanism.

18. The suture locking assembly of claim 17, wherein the suture band is configured to fit snugly around the stent of the tissue heart valve mechanism.

19. The suture locking assembly of claim 15, wherein the heart valve repair device is a mechanical heart valve mechanism.

20. The suture locking assembly of claim 1, further comprising:

a plastic cover attached to the suture locking assembly opposite the rim, wherein the suture band is maintained between the rim and the plastic cover.

21. The suture locking assembly of claim 1, wherein the suture locking assembly of claim 1, wherein the suture band is formed of a metallic material.

22. The suture locking assembly of claim 1, wherein the rim is at least partially covered by a fabric cover to couple the rim with the heart valve repair device.

23. The suture locking assembly of claim 1, wherein the rim includes a band coupling member to facilitate maintaining the suture band between the first and second flanges.

24. The suture locking assembly of claim 1, wherein the heart valve repair device is an annuloplasty band.

25. The suture locking assembly of claim 1, wherein the heart valve repair device is an annuloplasty ring.

26. The suture locking assembly of claim 1, wherein the rim and the suture band are each arcuately shaped.

27. The suture locking assembly of claim 26, wherein the rim defines a first end and a second end and includes a first end cap on the first end and a second end cap on the second end to facilitate maintaining the suture band between the first and second flanges.

28. The suture locking assembly of claim 1, wherein the suture band defines a cutout configured to securely maintain the suture in the second position.

29. The suture locking assembly of claim 28, wherein the cutout is a U-shaped cutout and the suture is maintained between the cutout and a remainder of the suture band when in the second position.

30. The suture locking assembly of claim 1, wherein the suture band defines an engagement section including a connection body flanked by an outflow cut and an inflow cut, the engagement section being configured to securely maintain the suture segment in the second position over the connecting body.

31. The suture locking assembly of claim 30, wherein the suture band defines at least one lateral stop rib configured to impede suture movement from the second position to the first position.

32. The suture locking assembly of claim 1, wherein a perimeter shape of the first flange differs from a perimeter shape of the second flange.

33. The suture locking assembly of claim 1, wherein the first flange forms a first pattern of radial indentations and the second flange forms a second pattern of radial indentations, the first pattern of radial indentations differing from the second pattern of radial indentations.

34. The suture locking assembly of claim 1, wherein the first flange forms a plurality of recesses and a plurality of grooves, and further wherein a radial depth of the recesses is greater than a radial depth of the grooves, and further wherein at least one of grooves in interposed between two of the recesses.

35. The suture locking assembly of claim 1, wherein the rim forms a plurality of recesses, wherein each of the recesses are non-symmetrical.

36. The suture locking assembly of claim 35, wherein the each of the recesses is defined by a leading surface and a trailing surface each extending from a lateral edge, and further wherein an angle of extension of the leading surface from the lateral edge differs from an angle of extension of the trailing surface from the lateral edge.