Biological patch for use in medical procedures

• US 20060029633A1
• Filed: 08/03/2004
• Published: 02/09/2006
• Est. Priority Date: 08/03/2004
• Status: Abandoned Application

• Current Assignee: Biomet Sports Medicine LLC (Zimmer Biomet Holdings, Inc.)
• Original Assignee: Arthrotek Incorporated (Zimmer Biomet Holdings, Inc.)
• Inventors: Walters, Troy M., Stone, Kevin T., Kaiser, Ryan A., Bonnarens, Frank O., Troxel, Karen
• Application Number:
  US10/910,796
• Publication Number:
  US 20060029633A1
• Time in Patent Office: Days
• US Class Current: 424/422
• CPC Class Codes: A61F 2/08 Muscles; Tendons; Ligaments sutures A61B17/04
• CPC Class Codes: A61F 2/0811 Fixation devices for tendons or ligaments
• CPC Class Codes: A61F 2002/087 Anchor integrated into tendons, e.g. bone blocks, integrated rings
• CPC Class Codes: A61F 2240/001 Designing or manufacturing processes

Abstract

A method for forming a patch using a laminated material and a process for forming the laminated material. Also a plurality of patches using the laminated material for various implantation purposes into an anatomy. In addition, an implant method for implanting one or a plurality of the selected patches for various reasons.

Claims

1. An implant for use in repairing or reinforcing a tissue of a body, the implant comprising:

a structure defined by at least a first layer and a second layer;

said first layer and said second layer being generally held relative to one another in a generally aligned manner; and

an engagement portion defined by at least a portion of said laminated structure such that said laminated structure is able to be held relative to a selected portion of the tissue;

wherein said laminated structure is able to engage the tissue to assist in holding said tissue in a selected orientation.

2. The implant of claim 1, wherein said engagement portion includes at least one of an aperture and a core defined by said laminated structure.

3. The implant of claim 1, further comprising an engagement member, wherein said engagement portion includes at least one region defined by said laminated structure to allow for a substantially easy passing of said engagement member, wherein said engagement member is operable to interconnect said laminated structure and the tissue.

4. The implant of claim 1, wherein said laminated structure is defined by a number of layers in excess of said first layer and said second layer;

wherein each of said layers is laminated together to form a laminated construct implant for implantation including selected properties.

5. The implant of claim 4, wherein said selected properties include at least one of a strength, a rigidity, a size, a shape, a cross-sectional orientation, and combinations thereof.

6. The implant of claim 1, wherein said first layer and said second layer are formed of a material that is absorbable into the body after a selected period of time.

7. The implant of claim 6, wherein said bio-absorbable material includes collagen provided from a donor.

8. The implant of claim 1, wherein said first layer and said second layer are cross-linked to a selected degree to provide a selected property of the laminated structure prior to implant.

9. The implant of claim 1, wherein said generally aligned manner includes:

said first layer and said second layer each defining a longitudinal axis, and each axis is generally aligned with the other prior to and generally after lamination of the first layer and the second layer to form said laminated structure.

10. The implant of claim 1, wherein said first layer and said second layer include a selected dimension that is generally equivalent to each other, wherein said implant includes at least one dimension no larger than said generally equivalent dimension of said first and second layer.

11. The implant of claim 1, wherein said structure defines at least one:

a substantially “

T”

shaped cross-section formed along a plane generally transverse to a longitudinal axis of the structure;

a perimeter of said structure that includes an elongated portion that terminate in enlarged ends;

a dome including a substantially circular perimeter; and

a dome including a generally oblong shape wherein said dome defines a first radius and a second radius wherein said first radius differs from said second radius.

12. A method of making an implant comprising:

providing a first layer of material defining a first dimension;

positioning a second layer of material defining a second dimension relative to said first layer of material;

providing said first layer and said second layer such that said first dimension and said second dimension are generally co-extensive; and

laminating said first layer to said second layer to form a laminated construct from which the implant is able to be formed.

wherein positioning said second layer relative to said first layer includes substantially aligning a longitudinal axis of said second layer with a longitudinal axis of said first layer.

13. The method claim 12, further comprising:

cross-linking said first layer and said second layer to a selected degree wherein said cross-linking provides a selected property of the implant.

14. The method of claim 13, wherein said cross-linking said first layer and said second layer includes both intra-layer cross-linking and inter-layer cross-linking such that cross-links may be formed within each of the layers and between each of the layers.

15. The method of claim 12, further comprising:

positioning at least a third layer adjacent said first layer or said second layer prior to laminating said first layer or said second layer;

wherein positioning said first layer, said second layer, and said third layer forms a blank which is laminated in said laminating;

wherein each of said first layer, second layer and third layer are laminated to an adjacent layer to substantially form the implant.

16. The method of claim 15, further comprising:

positioning any number of layers relative to said first layer and said second layer and laminating each of the plurality of layers to at least one layer adjacent each layer to form a laminated construct to form the implant.

17. The method of claim 12, further comprising:

forming the implant from the laminated construct to include at least one of a selected size, shape, property, engagement portion and combinations thereof.

18. The method of claim 17, wherein forming the implant includes cutting a portion of the laminated structure such that after each of the selected cuts are made a resultant implant is formed that may be positioned relative to the soft tissue.

19. The method of claim 17, wherein forming the implant includes:

determining the selected position of the implant relative to the soft tissue;

creating a template that is able to generally conform with the soft tissue to provide a selected result; and

cutting said laminated construct using said template as a guide.

20. A method of forming an implant for implanting into a body, the method comprising:

selecting an implant characteristic including a generally three-dimensional contour;

forming a mold to generally define said generally three-dimensional contour;

positioning an implant material relative to said mold; and

curing said implant material to generally conform to said mold;

wherein said implant material includes a first layer and a second layer;

wherein said curing includes lamination.

21. The method of claim 20, further comprising:

positioning at least a first layer and a second layer relative to the mold, wherein said mold positions said at least said first layer and said second layer in a selected position; and

laminating said at least first layer and said second layer while said first layer and said second layer are positioned on said mold such that said laminated construct is formed to generally compliment said mold.

22. The method of claim 20, wherein said mold includes at least a piercing member able to pierce at least a portion of one of a first layer and a second layer to provide a selected aperture in said first layer or said second layer.

23. The method of claim 22, wherein said mold is able to provide a pore in said implant material in a substantially selected orientation or position.

24. The method of claim 22, further comprising:

providing a plurality of said projections to form a plurality of pores in said implant material;

wherein said pores are able to allow a selected material to enter said implant material.

25. The method of claim 20, wherein selecting an implant characteristic includes at least one of determining a contour to generally nestingly engage a rotator cuff and a contour to engage a condyle.

26. A method of providing an implant for a selected site in a soft tissue from which an autograft is taken, comprising:

selecting a position from which an autograft is to be harvested;

removing the autograft and forming a harvest site;

positioning an implant in said harvest site;

forming said implant including;

positioning a first layer relative to a second layer; and

laminating said first layer and said second layer to form a generally laminated construct;

wherein said first layer and said second layer are generally of equivalent in size prior to said laminating.

27. The method of claim 26, wherein selecting the position from which the autograft is to be taken includes:

selecting an appropriate soft tissue portion that is able to be used in a selected autograft implant site;

wherein said soft tissue interconnects a first bone portion and a second bone portion.

28. The method of claim 26, wherein removing the autograft includes removing an autograft portion from the tissue, wherein the removal of the autograft portion generally results in defining of a gap in the tissue.

29. The method of claim 26, further comprising forming said implant to substantially compliment said repair site.

30. The method of claim 26, further comprising:

fixing said implant relative to said repair site.

31. The method of claim 26, wherein forming an implant includes:

forming an aperture in the laminated construct that allows a selected fixation member to pass through said laminated construct to substantially interact with the tissue at a selected position relative to said repair site.

32. The method of claim 31, further comprising cross-linking a selected portion of said first layer and said second layer to provide a selected property to said laminated construct.

33. The method of claim 26, wherein forming an implant includes at least one of:

positioning said first layer relative to said second layer such that said laminated construct substantially compliments said repair site; and

cutting said laminated construct to substantially compliment said repair site;

wherein said implant substantially compliments said repair site for a generally customized fit.

34. A method of implanting an implant relative to a selected tissue portion using a generally less invasive procedure, the method comprising:

forming the implant to include a selected dimension;

forming a portal to achieve access to the selected tissue portion;

passing said implant through said portal;

providing a suture through said implant prior to passing said implant through said portal; and

engaging said selected soft tissue portion with said suture.

35. The method of claim 34, wherein forming an implant includes:

positioning a blank laminate relative to a jig and laminating said material such that said blank laminate forms a shape that is substantially complimentary to the jig.

36. The method of claim 35, wherein said jig includes at least one piercing element that is able to pierce the material either before or during the lamination process to allow the formation of a bore in said implant.

37. The method of claim 34, further comprising:

defining a structure in said implant that allows a selected portion of the soft tissue to grow into said implant over a selected period of time.

38. The method of claim 34, further comprising providing a sleeve through said portal;

passing said implant through said portal, wherein said implant is deformed from said selected dimension to pass through said portal and is able to re-obtain said selected dimension after passing through said sleeve.

39. The method of claim 34, further comprising:

tying said suture to the soft tissue after the implant has passed through said portal to generally fix said implant relative to the soft tissue.

40. The method of claim 34, wherein engaging said soft tissue portion with said suture occurs before passing said suture through the implant;

wherein after said suture is provided through said implant said implant is passed over said suture to a selected position relative to the soft tissue;

wherein a knot is passed over the suture to substantially hold the implant relative to the soft tissue.

41. The method of claim 40, wherein said knot and said implant are passed over said suture substantially concurrently.

42. The method of claim 34, wherein providing a suture through said implant includes passing said suture through a bore defined by the implant.

43. The method of claim 34, further comprising:

forming a bore in said implant to receive an anchor; and

anchoring the implant with the anchor to a portion of the soft tissue relative to said soft tissue area.

44. An implant for use in repairing or reinforcing a tissue of a body, the implant comprising:

a structure that has a discrete three-dimensional shape and has at least a first layer and a second layer;

said first layer substantially held relative to said second layer in a generally aligned manner; and

an engagement portion defined by at least a portion of said structure such that said structure is able to be held relative to a selected portion of the tissue;

wherein said structure is substantially manufactured with said discrete three-dimensional shape.

45. The implant of claim 44, wherein said discrete three dimensional shape is defined by an implantable substructure;

wherein said structure is overlaying said implantable substructure to maintain said discrete three dimensional shape.

46. The implant of claim 45, wherein said implantable substructure includes a stent.

47. The implant of claim 44, wherein said discrete three dimensional shape includes at least one of a dome, a T-shape, a tube, a condylar shape and combinations thereof.