Method and apparatus for use of a metal-metal constrained liner
First Claim
Patent Images
1. An acetabular prosthetic comprising:
- a bone engagement surface;
a first inner integral generally spherical concave bearing surface; and
a locking mechanism configured to couple a second prosthetic implant having a second spherical bearing surface, the second spherical concave bearing surface is configured to substantially surround a head of a femoral component.
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Abstract
An acetabular prosthesis and method for its use in an orthopedic surgery is disclosed. The acetabular prosthesis forms a metal bearing, which articulates with a femoral head. The acetabular prosthesis is also configured so as to accept a polymer constraining ring. Should a revision surgery be necessary, the acetabular prosthesis may accept a polymer bearing liner over the metal bearing. The polymer bearing liner then articulates with the femoral head.
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Citations
43 Claims
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1. An acetabular prosthetic comprising:
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a bone engagement surface;
a first inner integral generally spherical concave bearing surface; and
a locking mechanism configured to couple a second prosthetic implant having a second spherical bearing surface, the second spherical concave bearing surface is configured to substantially surround a head of a femoral component. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21)
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22. A kit of prosthetic components comprising:
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an acetabular prosthetic defining an integral spherical bearing surface and a locking mechanism configured to accept a second prosthetic device;
at least one second prosthetic device having a partially spherical bearing surface, the partially spherical bearing surface is configured to substantially surround a head of a femoral component; and
a femoral prosthetic. - View Dependent Claims (23, 24, 25, 26)
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27. A method for implanting a medical device comprising:
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implanting a first prosthetic having an integral internal bearing surface and a locking mechanism which is configured to fixably accept a second prosthetic having a second bearing surface which substantially surrounds a head portion of a femoral component, to a prepared joint; and
inserting a femoral prosthetic within the integral internal bearing surface of the first prosthetic. - View Dependent Claims (28, 29, 30, 31, 32, 33)
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34. An acetabular prosthetic implant comprising:
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a first member having a bone engagement surface and an integral generally spherical first bearing surface, said first member defining a locking mechanism configured to be coupled to a second prosthetic member; and
a second prosthetic member, coupled to said locking mechanism, said second member defining a second semi-spherical bearing surface, said first and second bearing surfaces defining a generally capsule shaped cavity; and
wherein said generally capsule shaped cavity is configured to rotatably accept a head of a femoral prosthetic and allow the translation of the head along a predetermined axis. - View Dependent Claims (35, 36, 37)
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38. A constraining ring for coupling a femoral prosthetic to an acetabular prosthetic, the constraining ring comprising:
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a locking mechanism configured to couple the constraining ring to the acetabular cup;
a bearing surface configured to slidably interface with the femoral prosthetic; and
a reinforcement ring integrally molded into the constraining ring. - View Dependent Claims (39, 40)
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41. A constraining ring for coupling a femoral prosthetic to an acetabular prosthetic, the constraining ring comprising:
a locking mechanism configured to couple the constraining ring to the acetabular cup, said locking mechanism defining a flange member which is configured to be positioned beneath a locking tab defined by the acetabular cup. - View Dependent Claims (42, 43)
Specification