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US 12,758,388 B2Granted
Acetabular apparatuses for hip revision surgery
AssigneesSmith & Nephew, Inc., Smith & Nephew Orthopaedics AG, Smith & Nephew Asia Pacific Pte. Limited
InventorsStephen J. Lee, Jeffrey J. Shea
Life of this patent
Estimating the term…
Abstract
Prostheses, acetabular apparatuses, and methods of use are disclosed. In some embodiments, an acetabular apparatus includes an acetabular cup and an acetabular cage disposed within an interior of the acetabular cup. The acetabular cage may include a central portion including a first section and a second section rotatably coupled together, and a first flange extending from the first section and a second flange extending from the second section. The acetabular prosthesis may further include a fastener extending through each of the acetabular cup and the central portion of the acetabular cage.
Claims19
An acetabular implant comprising:
- an acetabular cup including a body extending from an equatorial rim to an apex, the body having a generally convex exterior surface and an interior cavity having a generally concave interior surface, the body including a plurality of screw holes extending between the interior surface and the exterior surface;
- and
- an acetabular cage including a central portion disposed within the interior cavity of the acetabular cup, the central portion having a generally convex exterior surface and an interior cavity having a generally concave interior surface, the central portion of the cage further including one or more elongated slots formed therein, the one or more slots extending between the exterior surface and the interior surface of the central portion;
- wherein, with the central portion of the cage disposed within the interior cavity of the cup, one or more of the plurality of screw holes formed in the body of the cup are aligned with the one or more elongated slots to enable one or more fasteners to pass therethrough;
- and
- wherein the one or more elongated slots extending circumferentially about the central portion of the cage.
3 more elements
An acetabular implant comprising:
- an acetabular cup including a body extending from an equatorial rim to an apex, the body having a generally convex exterior surface and an interior cavity having a generally concave interior surface, the body including a plurality of screw holes extending between the interior surface and the exterior surface;
- and
- an acetabular cage including a central portion disposed within the interior cavity of the acetabular cup, the central portion having a generally convex exterior surface and an interior cavity having a generally concave interior surface, the central portion of the cage further including one or more elongated slots formed therein, the one or more slots extending between the exterior surface and the interior surface of the central portion;
- wherein, with the central portion of the cage disposed within the interior cavity of the cup, one or more of the plurality of screw holes formed in the body of the cup are aligned with the one or more elongated slots to enable one or more fasteners to pass therethrough;
- and
- wherein the one or more elongated slots include a plurality of slots separated from each other by a support member.
3 more elements
An acetabular implant comprising:
- an acetabular cup including a body extending from an equatorial rim to an apex, the body having a generally convex exterior surface and an interior cavity having a generally concave interior surface, the body including a plurality of screw holes extending between the interior surface and the exterior surface;
- and
- an acetabular cage including a central portion disposed within the interior cavity of the acetabular cup, the central portion having a generally convex exterior surface and an interior cavity having a generally concave interior surface, the central portion of the cage further including one or more elongated slots formed therein, the one or more slots extending between the exterior surface and the interior surface of the central portion;
- wherein, with the central portion of the cage disposed within the interior cavity of the cup, one or more of the plurality of screw holes formed in the body of the cup are aligned with the one or more elongated slots to enable one or more fasteners to pass therethrough;
- and
- wherein the cage includes one or more flanges extending from the rim thereof, each of the one or more flanges including a plurality of screw holes for receiving a fastener.
3 more elements
An acetabular implant comprising:
- an acetabular cup including a body extending from an equatorial rim to an apex, the body having a generally convex exterior surface and an interior cavity having a generally concave interior surface, the body including a plurality of screw holes extending between the interior surface and the exterior surface;
- an acetabular cage including a central portion disposed within the interior cavity of the acetabular cup, the central portion having a generally convex exterior surface and an interior cavity having a generally concave interior surface, the central portion of the cage further including one or more elongated slots formed therein, the one or more slots extending between the exterior surface and the interior surface of the central portion;
- and
- a liner disposed within the interior cavity of the cage, the liner arranged and configured to receive an artificial femoral head;
- wherein, with the central portion of the cage disposed within the interior cavity of the cup, one or more of the plurality of screw holes formed in the body of the cup are aligned with the one or more elongated slots to enable one or more fasteners to pass therethrough.
2 more elements
An acetabular implant comprising:
- an acetabular cup including a body extending from an equatorial rim to an apex, the body having a generally convex exterior surface and an interior cavity having a generally concave interior surface, the body including a plurality of screw holes extending between the interior surface and the exterior surface;
- and
- an acetabular cage including a central portion disposed within the interior cavity of the acetabular cup, the central portion having a generally convex exterior surface and an interior cavity having a generally concave interior surface, the central portion of the cage further including one or more elongated slots formed therein, the one or more slots extending between the exterior surface and the interior surface of the central portion;
- wherein, with the central portion of the cage disposed within the interior cavity of the cup, one or more of the plurality of screw holes formed in the body of the cup are aligned with the one or more elongated slots to enable one or more fasteners to pass therethrough;
- and
- wherein the exterior surface of the cage further includes one or more surface features arranged and configured to provide a minimum distance between the exterior surface of the cage and the interior surface of the cup for receiving a minimum thickness of cement.
3 more elements
An acetabular implant comprising:
- an acetabular cup including a body extending from an equatorial rim to an apex, the body having a generally convex exterior surface and an interior cavity having a generally concave interior surface, the body including a plurality of screw holes extending between the interior surface and the exterior surface;
- and
- an acetabular cage including a central portion disposed within the interior cavity of the acetabular cup, the central portion having a generally convex exterior surface and an interior cavity having a generally concave interior surface, the central portion of the cage further including a plurality of elongated slots formed therein;
- wherein:
- the plurality of elongated slots extend between the exterior surface and the interior surface of the central portion of the cage;
- the plurality of elongated slots extend circumferentially about the central portion of the cage;
- the plurality of elongated slots are separated from each other by a support member;
- and
- with the central portion of the cage disposed within the interior cavity of the cup, the plurality of screw holes formed in the body of the cup are aligned with the plurality of elongated slots to enable one or more fasteners to pass therethrough.
6 more elements
Dependencies are inferred from the claim text.