System and method for joint resurfacing and repair

• US 10,307,172 B2
• Filed: 10/18/2016
• Issued: 06/04/2019
• Est. Priority Date: 07/03/2012
• Status: Active Grant

• Current Assignee: Arthrosurface, Inc (Anika Therapeutics Incorporated)
• Original Assignee: Arthrosurface, Inc (Anika Therapeutics Incorporated)
• Inventors: Sikora, George, Ek, Steven W.
• Primary Examiner(s): Sevilla, Christian
• Application Number:
  US15/296,772
• Publication Number:
  US 20170281200A1
• Time in Patent Office: 959 Days
• CPC Class Codes: A61B 17/16 Bone cutting, breaking or removal means other than saws, e.g. Osteoclasts; Drills or chisels for bones; Trepans arthroscopic bone cutters A61B17/320016; dental implant drills potentially for other surgical use A61C8/0089; bone grinders A61F2/4644, A22C17/06; A61B17/1662 takes precedence over all other subgroups except A61B17/17
• CPC Class Codes: A61B 17/1637 Hollow drills or saws producing a curved cut, e.g. cylindrical A61B10/025, A61B17/1695 take precedence
• CPC Class Codes: A61B 17/1675 for the knee
• CPC Class Codes: A61B 17/17 Guides or aligning means for drills , mills, pins or wires
• CPC Class Codes: A61B 17/1739 specially adapted for particular parts of the body
• CPC Class Codes: A61B 17/1764 for the knee
• CPC Class Codes: A61F 2/28 Bones joints A61F2/30
• CPC Class Codes: A61F 2/30756 Cartilage endoprostheses A61F2/3603 takes precedence
• CPC Class Codes: A61F 2/3859 Femoral components
• CPC Class Codes: A61F 2002/30232 Half-cylinders
• CPC Class Codes: A61F 2002/30617 Visible markings for adjusting, locating or measuring
• CPC Class Codes: A61F 2002/3082 Grooves
• CPC Class Codes: A61F 2002/30878 with non-sharp protrusions, for instance contacting the bone for anchoring, e.g. keels, pegs, pins, posts, shanks, stems, struts
• CPC Class Codes: A61F 2002/30884 Fins or wings, e.g. longitudinal wings for preventing rotation within the bone cavity
• CPC Class Codes: A61F 2002/3895 unicompartimental
• CPC Class Codes: A61F 2310/00179 Ceramics or ceramic-like structures
• CPC Class Codes: A61F 2310/00982 Coating made of collagen

Abstract

An implant resection system for preparing an implant site to replace a defect in an articular surface of a first bone includes a first guide configured to be coupled generally to the first bone. The first guide includes a body portion defining a channel configured to receive a pin, wherein the pin is configured to penetrate and form a longitudinally disposed bore within the first bone. The implant resection system further includes a second guide configured to be coupled generally perpendicular to the first bone proximate to the defect by way of the bore. The second guide includes a drill bit configured to form an excision site through a portion of the articular surface in preparation of receipt of an implant.

Claims

1. An implant resection system for preparing an implant site to replace a defect in an articular surface of a first bone, said implant resection system comprising:

a first guide configured to be coupled to a first bone, said first guide comprising a body portion defining a first and a second passageway at least one channel defined on a portion thereof, said first and said second passageway configured to extend generally perpendicular to a longitudinal axis of said first bone proximate to said defect;

a first and a second pin configured to be received and retained within said first and said second passageway, respectively, said first and said second pin each having a distal end configured to pierce said first bone and to extend generally perpendicular to said longitudinal axis of said first bone; and

one or more cannulated drills configured to be advanced over said first and said second pin to remove a portion of said articular surface and form a first and a second truncated cylindrical excision site, respectively, in first bone.

2. The implant resection system of claim 1, further comprising:

an arm extending outwardly from a distal face of said body portion of said first guide; and

a spoon disposed about a distal end of said arm, said spoon configured to be disposed between said articular surface of said first bone and an articular surface of a second cooperating bone.

3. The implant resection system of claim 2, wherein said spoon further comprises a generally convex base portion configured to abut against said articular surface of said cooperating bone and a generally concave upper portion configured to abut against said articular surface of said first bone.

4. The implant resection system of claim 1, wherein said first and said second passageway is configured to align said first and said second pin such that said first and said second excision site formed by said one or more cannulated drills partially overlap.

5. The implant resection system of claim 1, further comprising:

a rod member;

a second guide configured to be coupled generally perpendicular to said second bone proximate to said defect, said second guide comprising;

a body portion having a handle member disposed at one end; and

a first passageway and a second passageway defined on an opposing end of said body portion, said passageways each defining a generally cylindrical core pathway configured to extend generally perpendicular to said second bone; and

a drill bit configured to be received within and extend through said second passageway and proximate to said defect in said second bone;

wherein said rod member is configured to be received within said first passageway and advanced along said generally cylindrical core pathway into a portion of said bore in said second bone; and

wherein said second guide is configured to pivot about said rod member from a first position to a second position relative said second bone and said defect such that said drill bit moves along an arcuate path to form a first excision site in said second bone.

6. The implant resection system of claim 5, wherein said rod member provides a generally longitudinal axis generally perpendicular to said second bone about which said body portion of said second guide rotates when said second guide moves from said first position to said second position.

7. The implant resection system of claim 6, wherein said drill bit is configured to rotate about said generally longitudinal axis of said rod member and remove a portion of articular surface said second bone to define said first excision site when said second guide moves from said first position to said second position.

8. The implant resection system of claim 1, further comprising an implant comprising:

a load bearing surface having a contour substantially corresponding to a contour of said removed portion of said articular surface; and

a bone facing surface having a contour substantially corresponding to a contour of said first and said second truncated cylindrical excision site formed in said first bone.

9. The implant resection system of claim 8, wherein said bone facing surface further comprises a plurality of relief cavities configured secure said implant to said bone.

10. The implant resection system of claim 8, wherein said implant comprises an upper portion configured to be secured to a lower portion, said upper portion comprising said load bearing surface and said lower portion comprising said bone facing surface.

11. The implant resection system of claim 1, wherein said first bone is a femur and said second bone is a tibia.

12. The implant resection system of claim 1, wherein said one or more cannulated drills comprise a plurality of cannulated drills having different diameters.

13. The implant resection system of claim 1, wherein said first and said second pin each comprise indicia configured to indicate an insertion depth of said one or more cannulated drills into said first bone.

14. The implant resection system of claim 5, wherein said drill bit is configured to rotate within said second passageway of said second guide to form said first excision site in said second bone as said second guide pivots about said rod member.

15. The implant resection system of claim 5, further comprising surface reamer configured to remove a portion of said second bone and form a second excision site, said second excision site overlapping with said first excision site.

16. An implant resection system for preparing an implant site to replace a defect in an articular surface of a first bone, said implant resection system comprising:

a rod member;

a first guide configured to be secured generally perpendicular to said first bone proximate to said defect, said second guide comprising;

a body having a handle member disposed at one end; and

a first passageway and a second passageway defined on an opposing end of said body, said passageways each defining a generally cylindrical core pathway configured to extend generally perpendicular to said first bone; and

a drill bit configured to be received within and extend through said second passageway and proximate to said defect in said first bone;

wherein said rod member is configured to be to be received within said first passageway and advanced along said generally cylindrical core pathway into a portion of a bore in said first bone to secure said first guide to said first bone; and

wherein said first guide is configured to pivot about said rod member from a first position to a second position relative said bone and said defect such that said drill bit moves along an arcuate path to form said excision site.

17. The implant resection system of claim 16, wherein said drill bit is configured to rotate within said second passageway of said second guide to form said first excision site in said second bone as said second guide pivots about said rod member.

18. The implant resection system of claim 16, further comprising surface reamer configured to remove a portion of said second bone and form a second excision site, said second excision site overlapping with said first excision site.

19. The implant resection system of claim 18, further comprising an implant comprising:

a load bearing surface having a contour substantially corresponding to a contour of said articular surface of said first and said second excision sites; and

a bone facing surface having a contour substantially corresponding to a contour of said first and said second excision sites.