MEDICAL DEVICE FOR REPAIR OF TISSUE AND METHOD FOR IMPLANTATION AND FIXATION

• US 20100036389A1
• Filed: 08/06/2007
• Published: 02/11/2010
• Est. Priority Date: 08/07/2006
• Status: Active Grant

• Current Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Original Assignee: Howmedica Osteonics Corp. (Stryker Corporation)
• Inventors: Schwartz, Herbert Eugene, Proch, Francis S.
• Granted Patent: US 9,289,201 B2
• Time in Patent Office: Days
• US Class Current: 606/108
• 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 17/064 Surgical staples, i.e. penetrating the tissue
• CPC Class Codes: A61B 2017/0403 Dowels
• CPC Class Codes: A61B 2017/0404 Buttons
• CPC Class Codes: A61B 2017/044 with a threaded shaft, e.g. screws
• CPC Class Codes: A61B 2017/0445 cannulated, e.g. with a longitudinal through-hole for passage of an instrument
• CPC Class Codes: A61B 2017/0458 Longitudinal through hole, e.g. suture blocked by a distal suture knot
• CPC Class Codes: A61B 2017/0459 Multiple holes in the anchor through which the suture extends and locking the suture when tension is applied
• CPC Class Codes: A61B 2017/0464 for soft tissue
• CPC Class Codes: A61B 2017/0475 using sutures having a slip knot
• CPC Class Codes: A61B 2017/0496 for tensioning sutures
• CPC Class Codes: A61B 2017/0646 for insertion into cartillege, e.g. meniscus
• CPC Class Codes: A61B 2017/0648 threaded, e.g. tacks with a screw thread

Abstract

The present invention relates to medical devices for repairing tissue and more specifically to devices which facilitate tissue regeneration and to surgical methods for the implantation and fixation of such devices. In one embodiment, the medical device is an elongate conduit that includes a longitudinal bore extending therethrough to facilitate the transfer of blood from a vascular region of tissue to a tear or damaged area located in an avascular and/or semi-vascular region of tissue. A filament and/or filaments are attached to the conduit and are positioned to secure the conduit and fixate the adjacent tear walls in mutual engagement. In another embodiment, a series of conduits are connected via a filament and/or filaments to facilitate the implantation of multiple conduits.

Claims

1-15. -15. (canceled)

16. A method for repairing torn tissue of a patient, the tissue having a first area of vascularity and a second area of vascularity, the vascularity of the second area being less than the vascularity of the first area, the method comprising:

inserting a conduit into the tissue, the conduit having a first end, a second end, and a longitudinal bore;

positioning the conduit such that the first end is adjacent to the tear;

inserting a filament into the tissue and through the longitudinal bore of the conduit;

positioning the filament through the tissue to fixate the tissue in a desired position; and

securing the filament.

17. The method of claim 16 wherein the tear is in the second area of vascularity, and wherein positioning the conduit further includes positioning the second end of the conduit within the first area of vascularity.

18. The method of claim 16 wherein inserting the conduit includes inserting the conduit through a face of the tear.

19. The method of claim 16 wherein inserting the conduit includes inserting the conduit through the articulating surface of the tissue.

20. The method of claim 16 wherein inserting the conduit includes utilizing an all-inside technique.

21. The method of claim 16 wherein inserting the conduit includes utilizing an inside-out technique.

22. The method of claim 16 wherein inserting the conduit includes utilizing an outside-in technique.

23. The method of claim 16 further comprising attaching a stop to the filament, and inserting the stop through the longitudinal bore of the conduit.

24. The method of claim 23 wherein the stop includes at least one aperture, and wherein attaching the stop to the filament includes threading the filament through the at least one aperture.

25. The method of claim 23 further comprising positioning the stop through the outer wall of the tissue.

26. The method of claim 23 wherein the stop is selected from the group consisting of a cylindrical rod, a square rod, and a circular disc.

27. The method of claim 16 wherein the conduit further includes a surface feature selected from the group consisting of ribs and threading, and wherein positioning the conduit further includes fixating the conduit within the tissue such that the surface feature engages the tissue.

28. The method of claim 16 wherein the filament includes a first end and a second end, and securing the filament includes forming a slipknot with the second end, passing the first end through the slipknot, and tightening the slipknot.

29. A method for repairing torn tissue of a patient, the tissue having a first area of vascularity and a second area of vascularity, the vascularity of the second area being less than the vascularity of the first area, the method comprising:

inserting a plurality of conduits into the tissue, the conduits each having a first end, a second end, and a longitudinal bore;

positioning each conduit such that its first end is adjacent to the tear;

inserting a filament into the tissue and through the longitudinal bore of each of the conduits;

positioning the filament through the tissue to fixate the tissue in a desired position; and

securing the filament.

30. The method of claim 29 wherein the tear of the tissue is in the second area of vascularity, and wherein positioning each conduit further includes positioning its second end within the first area of vascularity.

31. The method of claim 29 wherein inserting the plurality of conduits includes inserting each conduit through a face of the tear.

32. The method of claim 29 further comprising attaching at least one stop to the filament, and wherein inserting the filament includes inserting the at least one stop through the longitudinal bore of at least one of the plurality of conduits.

33. The method of claim 32 wherein inserting the at least one stop includes inserting one stop through each of the longitudinal bores.

34. The method of claim 32 wherein the at least one stop includes at least one aperture, and wherein attaching the stop to the filament includes threading the filament through the at least one aperture.

35. The method of claim 32 further comprising positioning the at least one stop through the outer wall of the tissue.

36. The method of claim 29 wherein the filament includes a first end and a second end, and securing the filament includes forming a slipknot with the second end, passing the first end through the slipknot, and tightening the slipknot.

37. A method for repairing torn tissue of a patient, the tissue having a first area of vascularity and a second area of vascularity, the vascularity of the second area being less than the vascularity of the first area, the method comprising:

inserting a conduit into the tissue, the conduit having a first end, a second end, and a longitudinal bore;

attaching a stop to a filament;

inserting the filament and the stop into the tissue and through the longitudinal bore of the conduit;

positioning the filament through the tissue to fixate the tissue in a desired position; and

securing the filament.

38. The method of claim 37 wherein inserting the conduit includes inserting the conduit through a face of the tear.