Tack anchor systems, bone anchor systems, and methods of use

• US 20080275469A1
• Filed: 03/05/2008
• Published: 11/06/2008
• Est. Priority Date: 03/05/2007
• Status: Active Grant

• Current Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Original Assignee: Tornier Incorporated
• Inventors: Fanton, Gary S., Krumme, John
• Granted Patent: US 8,758,406 B2
• Time in Patent Office: Days
• US Class Current: 606/139
• CPC Class Codes: A61B 17/0401 Suture anchors, buttons or pledgets, i.e. means for attaching sutures to bone, cartilage or soft tissue; Instruments for applying or removing suture anchors A61B17/0642 takes precedence; fixation devices for tendons or ligaments A61F2/0811
• CPC Class Codes: A61B 17/0469 Suturing instruments for use in minimally invasive surgery, e.g. endoscopic surgery
• CPC Class Codes: A61B 17/0487 Suture clamps, clips or locks, e.g. for replacing suture knots; Instruments for applying or removing suture clamps, clips or locks suture anchors A61B17/0401; wound clamps or clips A61B17/08; ligaturing clamps or clips A61B17/122
• CPC Class Codes: A61B 2017/0409 Instruments for applying suture anchors
• CPC Class Codes: A61B 2017/0412 having anchoring barbs or pins extending outwardly from suture anchor body
• CPC Class Codes: A61B 2017/0414 having a suture-receiving opening, e.g. lateral opening
• CPC Class Codes: A61B 2017/0417 T-fasteners
• CPC Class Codes: A61B 2017/0427 having anchoring barbs or pins extending outwardly from the anchor body
• CPC Class Codes: A61B 2017/2918 flexible handles

Abstract

Systems, apparatuses and methods for securing tissue to bone using tack anchors, bone anchoring systems are described. The tack anchor may include a body and a securing element. The body may include one or more compressible flanges, an opening and, a cavity. The cavity may include an opening near or proximate the flanges, and be configured to receive a suture. The securing element may be configured to slide into the opening of the body to secure a portion of one or more sutures in the cavity such that the ends of the sutures are accessible through the cavity opening. In some embodiments, tack anchor tool for insertion of a tack anchor into tissue and/or bone is described.

Claims

1. A tack anchor, comprising:

a body, wherein the body comprises one or more compressible flanges, an opening and a cavity, wherein the cavity comprises an opening near or proximate the flanges, and wherein the cavity is configured to receive a suture; and

a securing element, wherein the securing element is configured to slide into the opening of the body and wherein the securing element is configured to secure a portion of one or more sutures in the cavity such that the ends of the sutures are accessible through the cavity opening.

2. The tack anchor of claim 1, wherein one or more of the flanges comprises nitinol.

3. The tack anchor of claim 1, wherein one or more of the flanges comprises nickel and titanium.

4. The tack anchor of claim 1, wherein the body comprises one or more biocompatible materials.

5. The tack anchor of claim 1, wherein the body comprises at least 2 flanges.

6. The tack anchor of claim 1, wherein the body comprises at least 4 flanges.

7. The tack anchor of claim 1, wherein the diameter of a middle portion of the body ranges from about 1 millimeter to about 4 millimeters.

8. The tack anchor of claim 1, wherein the diameter of a middle portion of the body ranges from about 2 millimeters to about 3 millimeters.

9. The tack anchor of claim 1, wherein a distal end of the body is tapered.

10. The tack anchor of claim 1, wherein a distal end of the body is rounded.

11. The tack anchor of claim 1, wherein a distal end of the body is configured to be removably coupled to a proximal end of the body.

12. The tack anchor of claim 11, wherein the proximal end of the body comprises one or more grooves, wherein the one or more grooves are complimentary to one or more protrusions on an inner surface of the distal end of the body to allow the distal end to couple to the proximal end of the body.

13. The tack anchor of claim 1, wherein the securing element comprises a pin.

14. A tack anchor tool, comprising:

a hollow first elongated member comprising a stop, wherein the stop is coupled to an outer surface of the first elongated member, and wherein a tack anchor is configured to couple to the distal end of the first elongated member;

a hollow second elongated member, wherein the second elongated member is configured to be inserted into the first elongated member;

a handle coupled to the second elongated member, wherein the handle and second elongated member are configured to receive a suture; and

wherein the second elongated member is configured to displace the tack anchor from the distal end of the first elongated member so that at least one of the flanges of the tack anchor opens outward.

15. The tack anchor tool of claim 14, wherein a diameter first elongated member cavity ranges from about 1 millimeter to about 5 millimeters.

16. The tack anchor tool of claim 14, wherein a diameter of the second elongated member cavity ranges from about 0.1 millimeter to about 4.5 millimeters.

17. The tack anchor tool of claim 14, wherein the second elongated member extends at least 0.1 millimeter from the distal end second elongated member, when assembled.

18. The tack anchor tool of claim 14, wherein a diameter of the distal end of the first elongated member is smaller than a diameter of the shaft of the first elongated member.

19. The tack anchor tool of claim 14, wherein at least a bottom portion of the stop comprises a conical shape.

20. The tack anchor tool of claim 14, wherein at least a middle portion of the stop comprises an elliptical shape.

21. The tack anchor tool of claim 14, further comprising a spacer, the spacer being positioned between the handle and the stop, and wherein the handle is configured to abut the spacer.

22. The tack anchor tool of claim 14, further comprising a spacer, wherein the spacer comprises a tapered opening, and wherein at least an upper portion of the first elongated member comprises notches complimentary in shape to the tapered opening.

23. The tack anchor tool of claim 14, further comprising a spacer, wherein the spacer is configured to be removably coupled to the first elongated member, and wherein such that the spacer is positionable between the stop and the handle.

24. The tack anchor tool of claim 14, wherein the handle comprises one or more grooves to assist in gripping the handle.

25. The tack anchor tool of claim 14, wherein the handle comprises one or more polymers.

26. The tack anchor tool of claim 14, wherein the second elongated member comprises stainless steel and/or titanium.

27. The tack anchor tool of claim 14, wherein the first elongated member comprises stainless steel and/or titanium.

28. A method of inserting one or more tack anchors into a bone, comprising:

coupling a portion of a suture to the tack anchor, wherein the tack anchor comprises one or more compressible flanges;

coupling the tack anchor to a tack anchor tool; and

positioning a distal end of the tack anchor on the bone; and

applying force to a handle of the tack anchor tool such that the distal end of the tack anchor is inserted into the bone and the flanges of the tack anchor open outward;

removing the tack anchor tool by sliding the tack anchor tool in a proximal direction along the longitudinal axis of the sutures.

29. The method of claim 28, wherein the tack anchor tool further comprises a stop and a spacer, and the method further comprises positioning the spacer between the stop and the handle to inhibit a second elongated member of the tack anchor tool from displacing the tack anchor from a first elongated member of the tack anchor tool.

30. The method of claim 29, wherein applying force to the handle comprises forcing the handle to contact the stop.

31. The method of claim 28, further comprising inserting at least 2 tack anchors into the bone.

32. The method of claim 28, further comprising inserting at least 3 tack anchors into the bone.

33. The method of claim 28, further comprising positioning at least 2 bone anchors near or proximate one or more of the tack anchors.

34. The method of claim 28, further comprising drilling a hole into the bone and threading a bone anchor system into the bone.

35. A method of connecting tissue to bone, comprising:

pulling tissue onto an area of bone;

inserting a first tack anchor through the tissue and into the bone,

inserting a second tack anchor proximate to the first tack anchor, wherein the first tack anchor and the second tack anchor comprise one or more compressible flanges and one or more sutures, and wherein, upon insertion, at least one of the flanges of the first tack anchor and at least one of the flanges of the second tack anchor opens outward;

inserting a first bone anchor into the bone such that the first bone anchor is positioned proximate to the first tack anchor,

inserting a second bone anchor into a bone such that the second bone anchor is positioned proximate the second tack anchor, and wherein the first bone anchor and second bone anchor comprise a two bar locking assembly at least partially disposed in a cavity of the bone anchor main body, and wherein the two bar locking assembly comprises at least two interacting locking elements;

securing at least one of the sutures of the first tack anchor to the two bar locking assembly of the second bone anchor; and

securing at least one of the sutures of the second tack anchor to the two bar locking assembly of the first bone anchor.

36. A kit comprising;

one or more tack anchors, wherein at least one of the tack anchors comprises one or more compressible flanges;

one or more sutures; and

at least one tack anchor tool.

37. The kit of claim 36, further comprising one or more bone anchors, wherein at least one of the bone anchor comprises a two bar locking assembly at least partially disposed in a cavity of the bone anchor main body, and wherein the two bar locking assembly comprises at least two interacting locking elements.

38. A two-part suture anchor comprising:

a first anchor component comprising a first body, an opening formed within the first body and defining a first stop surface, and apparatus for engaging bone surrounding the first body of the first anchor component; and

a second anchor component comprising a second body defining a second stop surface, the second body being inwardly compressible, and a pair of sliding rings secured to the second body so as to be independently movable relative to the second body, wherein the rings are configured to receive suture therethrough;

wherein the second body of the second anchor component is configured to be compressed and advanced into the opening formed within the first body of the first anchor component until the second stop surface of the second body engages the first stop surface of the first body, whereupon to secure the second body to the first body.

39. A two-part suture anchor according to claim 38 wherein the opening extends from the distal end of the first body to the proximal end of the first body.

40. A two-part suture anchor according to claim 38 wherein the first body comprises a tubular structure.

41. A two-part suture anchor according to claim 38 wherein the first stop surface comprises an annular surface.

42. A two-part suture anchor according to claim 38 wherein the first stop surface comprises the distal end of the first body.

43. A two-part suture anchor according to claim 38 wherein the apparatus for engaging bone surrounding the first body of the first anchor component comprises screw threads.

44. A two-part suture anchor according to claim 38 wherein the apparatus for engaging bone surrounding the first body of the first anchor component comprises ribs.

45. A two-part suture anchor according to claim 38 wherein the apparatus for engaging bone surrounding the first body of the first anchor component comprises barbs.

46. A two-part suture anchor according to claim 38 wherein the first stop surface on the first body faces in a distal direction, and further wherein the second stop surface on the second body faces in a proximal direction.

47. A two-part suture anchor according to claim 38 wherein the second body comprises a bifurcated distal end having a first leg and a second leg separated by a void, and further wherein the first leg and second leg are compressible relative to one another.

48. A two-part suture anchor according to claim 47 wherein the second stop surface is formed on at least one of the first leg and the second leg.

49. A two-part suture anchor according to claim 47 wherein the second stop surface is formed on both the first leg and the second leg.

50. A two-part suture anchor according to claim 47 wherein the pair of sliding rings are secured to the second body using at least one pin.

51. A two-part suture anchor according to claim 50 wherein the pair of sliding rings are secured to the second body by the same pin.

52. A two-part suture anchor according to claim 50 wherein at least a portion of each sliding ring is disposed in the void, and further wherein the at least one pin extends between the first leg and the second leg.

53. A method for securing suture to bone, the method comprising:

providing a two-part suture anchor comprising;

a first anchor component comprising a first body, an opening formed within the first body and defining a first stop surface, and apparatus for engaging bone surrounding the first body of the first anchor component; and

a second anchor component comprising a second body defining a second stop surface, the second body being inwardly compressible, and a pair of sliding rings secured to the second body so as to be independently movable relative to the second body, wherein the rings are configured to receive suture therethrough;

wherein the second body of the second anchor component is configured to be compressed and advanced into the opening formed within the first body of the first anchor component until the second stop surface of the second body engages the first stop surface of the first body, whereupon to secure the second body to the first body;

securing suture to one of the pair of sliding rings;

deploying the first anchor component in bone; and

advancing the second body of the second anchor component into the opening formed within the body of the first anchor component until the second stop surface of the second body engages the first stop surface of the first body whereby to secure the second body to the first body.

54. A method according to claim 53 wherein the opening extends from the distal end of the first body to the proximal end of the first body.

55. A method according to claim 53 wherein the first body comprises a tubular structure.

56. A method according to claim 53 wherein the first stop surface comprises an annular surface.

57. A method according to claim 53 wherein the first stop surface comprises the distal end of the first body.

58. A method according to claim 53 wherein the apparatus for engaging bone surrounding the first body of the first anchor component comprises screw threads.

59. A method according to claim 53 wherein the apparatus for engaging bone surrounding the first body of the first anchor component comprises ribs.

60. A method according to claim 53 wherein the apparatus for engaging bone surrounding the first body of the first anchor component comprises barbs.

61. A method according to claim 53 wherein the first stop surface on the first body faces in a distal direction, and further wherein the second stop surface on the second body faces in a proximal direction.

62. A method according to claim 53 wherein the second body comprises a bifurcated distal end having a first leg and a second leg separated by a void, and further wherein the first leg and second leg are compressible relative to one another.

63. A method according to claim 62 wherein the second stop surface is formed on at least one of the first leg and the second leg.

64. A method according to claim 62 wherein the second stop surface is formed on both the first leg and the second leg.

65. A method according to claim 62 wherein the pair of sliding rings are secured to the second body using at least one pin.

66. A method according to claim 65 wherein the pair of sliding rings are secured to the second body by the same pin.

67. A method according to claim 65 wherein at least a portion of each sliding ring is disposed in the void, and further wherein the at least one pin extends between the first leg and the second leg.