System and method for retrograde procedure

• US 8,556,902 B2
• Filed: 03/08/2011
• Issued: 10/15/2013
• Est. Priority Date: 12/03/2002
• Status: Expired due to Term

• Current Assignee: Arthrosurface, Inc (Anika Therapeutics Incorporated)
• Original Assignee: Arthrosurface, Inc (Anika Therapeutics Incorporated)
• Inventors: Ek, Steven W., Brightman, Tim, Miniaci, Anthony
• Primary Examiner(s): Woodall, Nicholas
• Assistant Examiner(s): Waggle, Jr., Larry E.
• Application Number:
  US13/043,430
• Publication Number:
  US 20110196434A1
• Time in Patent Office: 952 Days
• Field of Search: 606/79, 606 80- 81, 606/86.R, 606 88- 89, 606 96- 99, 606103-104
• US Class Current: 606/86.R
• 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 17/1684 for the shoulder
• CPC Class Codes: A61B 17/17 Guides or aligning means for drills , mills, pins or wires
• CPC Class Codes: A61B 17/1714 for applying tendons or ligaments implements for applying tendons or ligaments A61F2/0805
• CPC Class Codes: A61B 17/1735 for rasps or chisels
• CPC Class Codes: A61B 17/175 for preparing the femur for hip prosthesis insertion
• CPC Class Codes: A61B 17/1778 for the shoulder
• CPC Class Codes: A61F 2/30756 Cartilage endoprostheses A61F2/3603 takes precedence
• CPC Class Codes: A61F 2/3601 for replacing only the epiphyseal or metaphyseal parts of the femur, e.g. endoprosthetic femoral heads or necks directly fixed to the natural femur by internal fixation devices non-prosthetic internal fixation devices for the femoral head or neck A61B17/74
• CPC Class Codes: A61F 2/4003 Replacing only the epiphyseal or metaphyseal parts of the humerus, i.e. endoprosthesis not comprising an entire humeral shaft replacing only the epiphyseal or metaphyseal parts of the femur A61F2/3601
• CPC Class Codes: A61F 2002/30299 umbrella-shaped or mushroom-shaped
• CPC Class Codes: A61F 2002/30332 Conically- or frustoconically-shaped protrusion and recess
• CPC Class Codes: A61F 2002/3085 with a threaded, e.g. self-tapping, bone-engaging surface, e.g. external surface
• CPC Class Codes: A61F 2002/4007 implanted without ablation of the whole natural humeral head
• CPC Class Codes: A61F 2002/4631 the prosthesis being specially adapted for being cemented
• CPC Class Codes: A61F 2220/0033 made by longitudinally pushing a protrusion into a complementary-shaped recess, e.g. held by friction fit
• CPC Class Codes: A61F 2230/0093 Umbrella-shaped, e.g. mushroom-shaped

Abstract

A system and method may be used for accessing an articular surface and for preparing an implant site on the articular surface. The method may include locating a portion of the articular. An access passage may be drilled towards the articular surface though bone behind the articular surface. An implant site may be excised in the articular surface relative to an axis defined by the access passage.

Claims

1. A method for replacing a portion of an articular surface comprising:

forming a passage through a first bone behind a first articular surface, said passage extending toward said first articular surface;

advancing a cannulated lumen within said passage until a portion of said cannulated lumen is disposed a predetermined depth beneath said first articular surface; and

advancing a rotary cutter to excise an implant site on said first articular surface relative to said passage until a portion of said rotary cutter contacts said portion of said cannulated lumen.

2. A method according to claim 1, wherein forming said passage through bone behind said first articular surface comprises establishing a reference axis extending through said first articular surface.

3. A method according to claim 2, wherein said reference axis intersects said portion of said first articular surface.

4. A method according to claim 2, wherein establishing said reference axis comprises inserting a guide pin extending at least partially into said first bone.

5. A method according to claim 4, wherein forming said passage comprises drilling over said guide pin with a cored drill.

6. A method according to claim 2, wherein said implant site extends radially around said reference axis.

7. A method according to claim 6, wherein excising said implant site comprises rotating a cutter about said reference axis.

8. A method according to claim 1, wherein advancing said cannulated lumen includes installing a threaded element at least partially into said passage, said threaded element having an opening extending therethrough defining said lumen.

9. A method according to claim 8, wherein a depth of said implant site is controlled relative to an upper bearing surface of said threaded element.

10. A method according to claim 1, further comprising installing an implant into said implant site.

11. A method of claim 1, wherein advancing said rotary cutter to excise said implant site further comprises advancing said rotary cutter in a retrograde manner.

12. A method of claim 11, wherein said rotary cutter is coupled to a drive shaft configured to be received within said cannulated lumen.

13. A method of claim 12, wherein said drive shaft and said cannulated lumen are configured to maintain said drive shaft in a desired alignment during excision of said implant site.

14. A method of claim 1, wherein said cannulated lumen includes a screw.

15. A method of claim 1, further comprising securing an implant to said cannulated lumen.

16. A method of claim 15, wherein securing said implant to said cannulated lumen includes advancing a tapered post of said implant into a corresponding tapered portion of said cannulated lumen.

17. A method of claim 16, wherein advancing said tapered post of said implant into said corresponding tapered portion of said cannulated lumen further includes applying an axial pressure to said implant.

18. A method of claim 1, wherein said cannulated lumen includes a fixation element.

19. A method of claim 1, further comprising accessing a second articular surface of a second bone through said passage, said second articular surface facing said first articular surface.