System and method for joint resurface repair

• US 7,678,151 B2
• Filed: 02/24/2003
• Issued: 03/16/2010
• Est. Priority Date: 05/01/2000
• Status: Expired due to Term

• Current Assignee: Arthrosurface, Inc (Anika Therapeutics Incorporated)
• Original Assignee: Arthrosurface, Inc (Anika Therapeutics Incorporated)
• Inventors: Ek, Steven W.
• Primary Examiner(s): Philogene; Pedro
• Application Number:
  US10/373,463
• Publication Number:
  US 20030225456A1
• Time in Patent Office: 2,577 Days
• Field of Search: 623/20.14, 623/20.15, 623/20.11, 623/2.023, 623/20.27, 623/20.29, 623/20.31, 623/18.11, 623/20, 623/20.21, 623/20.18, 623/901, 623/14.12, 623/20.2, 623/20.19, 623/17.11, 623/17.12, 623/17.13, 623/17.14, 623/17.15, 623/17.16, 623/23.72, 623 1911- 1914, 623/20.28, 623/20.33, 623/20.34, 623/20.36, 623/22.12, 623/22.43, 623/23.11, 623/23.14, 623/23.17, 623/23.15, 606/60, 606/62
• US Class Current: 623/20.14
• 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 17/0487 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 17/06166 Sutures suture materials A61L17/00; manufacture of artificial threads D01D; treatment of threads D06M
• CPC Class Codes: A61B 17/1615 Drill bits, i.e. rotating tools extending from a handpiece to contact the worked material
• CPC Class Codes: A61B 17/1635 for grafts, harvesting or transplants
• 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 17/1642 for producing a curved bore
• CPC Class Codes: A61B 17/1675 for the knee
• CPC Class Codes: A61B 17/1764 for the knee
• CPC Class Codes: A61B 17/7098 wherein the implant is permeable or has openings, e.g. fenestrated screw hollow surgical screws A61B17/864
• CPC Class Codes: A61B 17/8615 at the central region of the screw head
• CPC Class Codes: A61B 17/8625 Shanks, i.e. parts contacting bone tissue
• CPC Class Codes: A61B 17/863 with thread interrupted or changing its form along shank, other than constant taper
• CPC Class Codes: A61B 17/8695 Washers surrounding screw head in plate hole A61B17/8047, between bone plate and bone A61B17/8028
• CPC Class Codes: A61B 17/888 the driver bit acting on the central region of the screw head
• CPC Class Codes: A61B 17/8894 holding the implant into or through which the screw is to be inserted A61B17/7082, A61B17/7091 take precedence
• CPC Class Codes: A61B 2017/00238 Type of minimally invasive operation A61B2017/00805 takes precedence
• CPC Class Codes: A61B 2017/00464 for use with different instruments with hole for different instruments A61B2017/22072
• CPC Class Codes: A61B 2017/0404 Buttons
• CPC Class Codes: A61B 2017/0409 Instruments for applying suture anchors for applying suture clamps, clips or locks A61B2017/0488
• 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 2017/0448 : Additional elements on or within the anchor
• CPC Class Codes: A61B 2017/045 : snug fit within the anchor
• CPC Class Codes: A61B 2090/061 : for measuring dimensions, e.g. length
• CPC Class Codes: A61B 5/4528 : Joints A61B5/4533, A61B5/4538 take precedence
• CPC Class Codes: A61B 90/06 : Measuring instruments not otherwise provided for
• CPC Class Codes: A61F 2/30756 : Cartilage endoprostheses A61F2/3603 takes precedence
• CPC Class Codes: A61F 2/30767 : Special external or bone-contacting surface, e.g. coating for improving bone ingrowth
• CPC Class Codes: A61F 2/30942 : for designing or making customized prostheses, e.g. using templates, CT or NMR scans, finite-element analysis or CAD-CAM techniques
• CPC Class Codes: A61F 2/38 : for elbows or knees
• CPC Class Codes: A61F 2/3859 : Femoral components
• CPC Class Codes: A61F 2/4603 : for insertion or extraction of endoprosthetic joints or of accessories thereof
• CPC Class Codes: A61F 2/4618 : of cartilage
• CPC Class Codes: A61F 2/4657 : Measuring instruments used for implanting artificial joints for surgical instruments A61B90/06
• CPC Class Codes: A61F 2002/30065 : thermoplastic, i.e. softening or fusing when heated, and hardening and becoming rigid again when cooled
• CPC Class Codes: A61F 2002/30069 : elastomeric
• CPC Class Codes: A61F 2002/30113 : circular
• CPC Class Codes: A61F 2002/30143 : hexagonal
• CPC Class Codes: A61F 2002/30225 : Flat cylinders, i.e. discs
• CPC Class Codes: A61F 2002/30299 : umbrella-shaped or mushroom-shaped
• CPC Class Codes: A61F 2002/30324 : differing in thickness
• CPC Class Codes: A61F 2002/30332 : Conically- or frustoconically-shaped protrusion and recess
• CPC Class Codes: A61F 2002/30354 : Cylindrically-shaped protrusion and recess, e.g. cylinder of circular basis
• CPC Class Codes: A61F 2002/30433 : using additional screws, bolts, dowels, rivets or washers e.g. connecting screws
• CPC Class Codes: A61F 2002/30448 : using adhesives
• CPC Class Codes: A61F 2002/30451 : soldered or brazed or welded
• CPC Class Codes: A61F 2002/30563 : having elastic means or damping means, different from springs, e.g. including an elastomeric core or shock absorbers
• CPC Class Codes: A61F 2002/30604 : modular
• CPC Class Codes: A61F 2002/30719 : Means for cleaning prostheses
• CPC Class Codes: A61F 2002/30772 : Apertures or holes, e.g. of circular cross section
• CPC Class Codes: A61F 2002/30831 : perpendicular with respect to each other
• CPC Class Codes: A61F 2002/30858 : Threads interrupted by grooves or sidewalls, e.g. flat sidewalls
• CPC Class Codes: A61F 2002/30871 : Trapezoidal threads
• CPC Class Codes: A61F 2002/30873 : Threadings machined on non-cylindrical external surfaces
• 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 2002/30879 : Ribs
• CPC Class Codes: A61F 2002/30892 : parallel
• CPC Class Codes: A61F 2002/30896 : perpendicular with respect to each other
• CPC Class Codes: A61F 2002/30943 : using mathematical models
• CPC Class Codes: A61F 2002/30948 : using computerized tomography, i.e. CT scans
• CPC Class Codes: A61F 2002/30952 : using CAD-CAM techniques or NC-techniques
• CPC Class Codes: A61F 2002/30957 : using a positive or a negative model, e.g. moulds
• CPC Class Codes: A61F 2002/4635 : using minimally invasive surgery
• CPC Class Codes: A61F 2002/4658 : for measuring dimensions, e.g. length
• CPC Class Codes: A61F 2002/4661 : for measuring thickness
• CPC Class Codes: A61F 2002/4662 : for measuring penetration depth
• CPC Class Codes: A61F 2002/4663 : for measuring volumes or other three-dimensional shapes
• CPC Class Codes: A61F 2002/4681 : by applying mechanical shocks, e.g. by hammering
• CPC Class Codes: A61F 2210/0071 : thermoplastic
• 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 2220/0041 : using additional screws, bolts, dowels or rivets, e.g. connecting screws
• CPC Class Codes: A61F 2220/005 : using adhesives
• CPC Class Codes: A61F 2220/0058 : soldered or brazed or welded
• CPC Class Codes: A61F 2230/0006 : circular
• CPC Class Codes: A61F 2230/0017 : Angular shapes
• CPC Class Codes: A61F 2230/0069 : cylindrical
• CPC Class Codes: A61F 2230/0093 : Umbrella-shaped, e.g. mushroom-shaped
• CPC Class Codes: A61F 2250/0036 : differing in thickness
• CPC Class Codes: A61F 2250/0092 : Means for cleaning prostheses
• CPC Class Codes: A61F 2310/00017 : Iron- or Fe-based alloys, e.g. stainless steel
• CPC Class Codes: A61F 2310/00023 : Titanium or titanium-based alloys, e.g. Ti-Ni alloys
• CPC Class Codes: A61F 2310/00029 : Cobalt-based alloys, e.g. Co-Cr alloys or Vitallium
• CPC Class Codes: A61F 2310/00059 : Chromium or Cr-based alloys
• CPC Class Codes: A61F 2310/00089 : Zirconium or Zr-based alloys
• CPC Class Codes: A61F 2310/00095 : Niobium or Nb-based alloys
• CPC Class Codes: A61F 2310/00203 : containing alumina or aluminium oxide
• CPC Class Codes: A61F 2310/00239 : containing zirconia or zirconium oxide ZrO2
• CPC Class Codes: A61F 2310/00796 : Coating or prosthesis-covering structure made of a phosphorus-containing compound, e.g. hydroxy(l)apatite

Abstract

An implant for installation into a portion of an articular surface includes an implant shell component having a proximal load bearing wall with an outer proximal load bearing surface. A peripheral rim extending distally relative to the load bearing wall may provide a bone-facing distal pocket on the shell component. An inner implant component may be received in the bone-facing distal pocket of the implant such that a proximal surface of the inner component is spaced apart from a distal surface of the load bearing wall. The contour of the load bearing surface may be based on an original surface contour of an articular surface, and the load bearing wall of the shell component may be a deflectable wall, so that the load bearing surface can deflect under an applied load. The space between the load bearing wall and the inner implant may include a compressible fluid such as elastomeric gels.

Claims

1. An implant comprising:

a first component comprising a resiliently deformable load bearing wall including a load bearing surface, distal facing surface, a projecting peripheral rim and a pocket defined by said load bearing wall and an inside diameter of said peripheral rim, wherein said projecting peripheral rim extends generally outwardly and away from said load bearing surface and said distal facing surface;

a second component including a distal bone facing surface and an outer surface, wherein said second component is configured to be received in said pocket such that at least a portion of said projection peripheral rim extends beyond at least a portion of said distal bone facing surface of said second component, said first and said second components defining a gap between said distal facing surface of said load bearing wall and said outer surface of said second component, wherein at least a portion of said resiliently deformable load bearing wall at least partially deflects into said gap generally towards said second component under an applied load from an adjacent, interacting articular surface.

2. An implant according to claim 1, said second component further comprising a distal bone-facing surface including a mounting feature.

3. An implant according to claim 1, said peripheral rim comprising a plurality of radial slots spaced about a distal circumference of said rim.

4. An implant according to claim 1, wherein said peripheral rim comprises a radius portion proximate a transition between said load bearing wall and said peripheral rim to prevent localized stress.

5. An implant according to claim 1, wherein said portion of said second component is spaced from said load bearing wall to prevent deflection of said resiliently deformable load bearing wall at a predetermined position.

6. An implant according to claim 1, wherein said gap between said first and second component includes a compressible fluid material.

7. An implant for installation into a portion of an articular surface, said implant comprising:

a shell component comprising a resiliently deformable load bearing wall and a peripheral rim defining a pocket, said load bearing wall including a distal facing surface and an outer surface having a contour based on an original surface contour of an excised portion of said articular surface, wherein said peripheral rim extends generally outwardly and away from said load bearing surface and said distal facing surface,

an inner component comprising an outer surface and a bone-facing surface configured to mate with an implant site created by said excised portion of said articular surface, said inner component configured to be at least partially disposed in said pocket such that at least a portion of said peripheral rim extends beyond at least a portion of said distal bone facing surface; and

a gap between at least a portion of said outer surface of said inner component and said distal facing surface of said shell component, wherein at least a portion of said resiliently deformable load bearing wall at least partially deflects into said gap generally towards said inner component under an applied load from an adjacent, interacting articular surface.

8. An implant according to claim 7, wherein said load bearing proximal surface is a proximal surface of a load bearing wall, said load bearing wall being generally unsupported about a central portion of said wall.

9. An implant according to claim 8 wherein said load bearing wall is only supported about a perimeter of said load bearing wall.

10. An implant according to claim 7, wherein said gap between said shell component and said inner component includes a compressible fluid material.

11. An implant comprising:

a first component having a resiliently deformable load bearing wall having a distal facing surface, a proximal surface having a contour based on an original surface contour of an excised portion of an articular surface, and a peripheral rim extending generally outwardly and away from said load bearing surface and said distal facing surface;

a second component having an outer surface and a bone-facing surface;

a gap between said distal facing surface of said load bearing wall and said outer surface of said second component filled with a compressible fluid material, wherein at least a portion of said resiliently deformable load bearing wall at least partially deflects into said gap generally towards said second component under an applied load from an adjacent, interacting articular surface and wherein at least a portion of said projection peripheral rim extends beyond at least a portion of said distal bone facing surface of said second component.

12. An implant according to 11, wherein said distal bone-facing surface includes a mounting feature.

13. An implant according to claim 11, wherein said distal facing surface defines a cavity, and wherein said second component is sized to be at least partially received in said cavity.

14. An implant according to claim 11, wherein said first and second components being adapted to mate together;

and wherein second component comprising stop features dimensioned to position said first component with respect to said second component.

15. An implant according to claim 11, wherein said gap between said first and second component includes a polymer material.