Tissue connector apparatus with cable release

• US 20030093118A1
• Filed: 07/01/2002
• Published: 05/15/2003
• Est. Priority Date: 03/01/1999
• Status: Active Grant

• Current Assignee: Medtronic Incorporated (Medtronic Plc)
• Original Assignee: Coalescent Surgical Inc. (Medtronic Plc)
• Inventors: Gandionco, Isidro Matias, Doan, Nga T., Ho, Liem
• Granted Patent: US 6,960,221 B2
• Time in Patent Office: Days
• US Class Current: 606/224
• CPC Class Codes: A61B 17/06 Needles ; Sutures; Needle-suture combinations; Holders or packages for needles or suture materials puncturing needles A61B17/34; hypodermic needles A61M5/32 ; sewing needles D05B85/00
• CPC Class Codes: A61B 17/06004 Means for attaching suture to needle tipping A61B17/06195; connecting wire to other metallic objects B21F15/00
• CPC Class Codes: A61B 17/083 Clips, e.g. resilient
• CPC Class Codes: A61B 2017/00867 shape memory effect for prostheses A61F2210/0014
• CPC Class Codes: A61B 2017/06057 Double-armed sutures, i.e. sutures having a needle attached to each end
• CPC Class Codes: A61B 2017/06076 helically or spirally coiled for sutures A61B2017/06171
• CPC Class Codes: A61B 2017/1135 End-to-side connections, e.g. T- or Y-connections Y-shaped blood vessel prostheses A61F2002/065
• CPC Class Codes: A61F 2002/30092 using shape memory or superelastic materials, e.g. nitinol
• CPC Class Codes: A61F 2210/0019 operated at only one temperature whilst inside or touching the human body, e.g. constrained in a non-operative shape during surgery, another temperature only occurring before the operation

Abstract

A tissue connector assembly comprising a clip movable between an open configuration and a closed configuration and a mechanical restraining device including a plurality of strands releasably attachable to the clip for restraining the clip in its open configuration. A needle may be releasably attached to the clip. A flexible member may also interconnect the clip and the needle.

Claims

1. A tissue connector assembly comprising a clip movable between an open configuration and a closed configuration, said clip having an enlarged end portion, and a release mechanism comprising a plurality of strands releasably coupled to said enlarged portion.

2. The tissue connector assembly of claim 1, wherein said strands comprise substantially rigid wires.

3. The tissue connector assembly of claim 1, wherein said strands comprise substantially rigid cables.

4. The tissue connector assembly of claim 1, wherein said strands each comprise a notch for receiving part of said enlarged portion.

5. The tissue connector assembly of claim 1, wherein said clip has a generally U-shaped configuration when in said open configuration

6. The tissue connector assembly of claim 1, further comprising a needle connected to said release mechanism and thereby releasably attached to said clip.

7. The tissue connector assembly of claim 6, wherein said plurality of strands are arranged in a circle and substantially parallel to one another to form a tube-like configuration, with proximal end portions of said strands being coupled to said needle.

8. The tissue connector assembly of claim 1, wherein distal end portions of said strands comprise notches configured to receive and lock said enlarged portion within a chamber defined by said notches.

9. The tissue connector assembly of claim 8, further comprising a shrink wrap layer surrounding at least said distal end portions of said strands, said shrink wrap layer adapted to be heat shrunk against said strands, thereby compressing said notches against said enlarged portion.

10. The tissue connector assembly of claim 9, wherein said shrink wrap layer comprises a shrink tubing.

11. The tissue connector assembly of claim 1, wherein compression of said plurality of strands releases said release mechanism from said enlarged portion.

12. The tissue connector assembly of claim 8, wherein distal end portions of said strands comprise notches configured to receive and lock said enlarged portion within a chamber defined by said notches;

and

wherein compression of said plurality of strands in a location between said notches and said coupled proximal end portions, deforms said chamber to enable removal of said enlarged portion from said chamber.

13. The tissue connector assembly of claim 1, further comprising a coil surrounding at least a portion of said clip and biasing said clip toward the open configuration.

14. The tissue connector assembly of claim 13, further comprising a clip retainer fixed at an end portion of said clip opposite said enlarged end portion.

15. The tissue connector assembly of claim 1, wherein said clip comprises a wire.

16. The tissue connector assembly of claim 15, wherein said wire is tubular.

17. The tissue connector assembly of claim 15, wherein said wire has a generally circular cross-section.

18. The tissue connector assembly of claim 15, wherein said wire comprises shape memory material.

19. The tissue connector assembly of claim 14, wherein said clip retainer has a cross-sectional area greater than a cross-sectional area of said coil.

20. The tissue connector assembly of claim 1, wherein said clip is in a relaxed state when in said closed configuration.

21. The tissue connector assembly of claim 1, wherein said clip assumes a spiral configuration in said closed configuration.

22. The tissue connector assembly of claim 14, wherein said coil comprises a plurality of adjacent loops, said coil being compressible with said plurality of adjacent loops being spaced closer to one another along one side of said coil than along an opposite side of said coil.

23. The tissue connector assembly of claim 22, wherein coupling of said release mechanism to said enlarged portion compresses said coil between said release mechanism and said retainer clip thereby biasing said clip in said open position.

24. The tissue connector assembly of claim 1, wherein said plurality of strands comprises two to ten strands.

25. A tissue connector assembly comprising a clip adapted to assume an open configuration and a closed configuration, a release mechanism comprising a plurality of strands releasably coupled to said clip, and a needle coupled to said release mechanism.

26. A tissue connector assembly comprising a clip adapted to assume an open configuration and a closed configuration, a coil coupled to said clip, and a release mechanism comprising a plurality of strands releasably coupled to said clip, wherein said coil biases said clip in said open configuration when said release mechanism is coupled to said clip.

27. The tissue connector assembly of claim 26;

further comprising a needle coupled to said release mechanism.

28. The tissue connector assembly of claim 27 wherein said needle is releasable from said clip simultaneously with said release mechanism.

29. The tissue connector of claim 28, wherein said clip assumes said closed position upon release from said release mechanism.

30. The tissue connector assembly of claim 26, further comprising a needle and a flexible member, said flexible member coupling said needle to said release mechanism.

31. The tissue connector assembly of claim 30, further comprising a transition sleeve connecting said release mechanism to said flexible member.

32. The tissue connector assembly of claim 30, wherein said flexible member comprises a suture.

33. The tissue connector assembly of claim 27, wherein said plurality of strands are arranged in a circle and substantially parallel to one another to form a tube-like configuration, with proximal end portions of said strands being coupled to said needle.

34. The tissue connector assembly of claim 33, wherein distal end portions of said strands comprise notches configured to receive and lock an enlarged portion of said clip within a chamber defined by said notches.

35. The tissue connector assembly of claim 34, further comprising a shrink wrap layer surrounding at least said distal end portions of said strands, said shrink wrap layer adapted to be heat shrunk against said strands, thereby compressing said notches against said enlarged portion.

36. The tissue connector assembly of claim 35, wherein said shrink wrap layer comprises a shrink tubing.

37. The tissue connector assembly of claim 26 wherein compression of said plurality of strands releases said release mechanism from said clip.

38. The tissue connector assembly of claim 35, wherein compression of said plurality of strands in a location between said notches and said coupled proximal end portions, deforms said chamber to enable removal of said enlarged portion from said chamber.

39. The tissue connector assembly of claim 26, wherein said plurality of strands comprises two to ten strands.

40. A tissue connector assembly comprising:

a surgical clip having a relaxed state;

a needle;

a release mechanism comprising a plurality of strands releasably coupling said needle to said clip; and

a biasing member associated with said surgical clip;

wherein said plurality of strands, when coupling said needle to said clip, urges said biasing member to bias said clip away from said relaxed state.

41. The tissue connector assembly of claim 40, wherein said plurality of strands comprises two to ten strands.

42. The tissue connector assembly of claim 40, wherein said biasing member comprises a coil surrounding at least a portion of said clip, said coil including a first end restrained from movement in one direction along said clip, and a second movable end, wherein said coupling of said release mechanism with said clip compresses said coil by movement of said second end.

43. A tissue connector assembly comprising a needle, a clip, and a releasing mechanism releasably connecting said needle to said clip, said releasing mechanism comprising a plurality of strands configured to surround and retain an enlarged portion of said clip, wherein compression of said configuration of said plurality of strands adjacent said enlarged portion distorts said configuration to release said enlarged portion.

44. The tissue connector assembly of claim 43, wherein said clip comprises a wire.

45. The tissue connector assembly of claim 44, wherein said wire comprises shape memory material.

46. The tissue connector assembly of claim 43, further comprising a spring for biasing said clip in said open configuration.