Modular acetabular surgical implant assembly
AssigneeDePuy Synthes Products, Inc.
InventorsPaul P. Lewis, Ian J. Flatters
Life of this patent
Estimating the term…
Abstract
An orthopaedic prosthetic system includes a plate having one or more flanges and an acetabular shell component. Each flange includes a surface configured to engage a patient's bone. The plate also includes a central ring that engages a lip extending from an outer surface of the shell component. The ring may be mechanically attached to the lip using multiple fasteners. The system may include multiple plates each having a different configuration from other plates, and may also include multiple shell components each having a different configuration from other shell components. Methods for assembling and using the prosthetic system are also disclosed.
Claims14
An orthopaedic prosthetic system comprising:
- a plate comprising a central ring and one or more flanges, wherein a plurality of apertures are defined in the central ring, and wherein each flange of the one or more flanges extends radially away from a corresponding predetermined position on the central ring, and wherein each of the one or more flanges includes a proximal surface to engage a patient's bone;
- and
- an acetabular shell component comprising a distal rim, a convex outer wall extending from the distal rim, and a circumferential lip positioned on the outer wall and extending away from the outer wall, wherein the lip is separated from the distal rim by a lateralization distance, and wherein the lip defines a first imaginary plane and the distal rim defines a second imaginary plane, the first and second imaginary planes being non-parallel to each other to define an inclination angle therebetween that is greater than zero, and wherein a plurality of apertures are defined in the lip;
- wherein the plate is configured to be positioned on the acetabular shell component such that each aperture of the central ring is aligned with a corresponding aperture of the lip of the acetabular shell component;
- wherein when the plate is positioned on the acetabular shell component, a proximal surface of the central ring engages a distal surface of the lip, and the central ring receives the distal rim of the acetabular shell component;
- and
- wherein the acetabular shell component comprises a concave curved inner wall that extends inwardly from the distal rim to define a hemispherical cavity sized to receive an acetabular bearing.
A method for assembling an orthopaedic prosthesis, the method comprising:
- selecting a first plate from a plurality of plates, wherein each plate of the plurality of plates comprises a central ring and one or more flanges, wherein each flange of the one or more flanges extends radially away from a corresponding predetermined position on the central ring, and wherein each of the one or more flanges includes a proximal surface to engage a patient's bone;
- selecting a first shell component from a plurality of acetabular shell components, wherein each acetabular shell component of the plurality of acetabular shell components comprises a distal rim, a convex outer wall extending from the distal rim, a concave curved inner wall that extends inwardly from the distal rim to define a hemispherical cavity sized to receive an acetabular bearing, and a circumferential lip positioned on the outer wall and extending away from the outer wall, and wherein the lip of each acetabular shell defines a first imaginary plane and the distal rim of each acetabular shell defines a second imaginary plane, the first and second imaginary planes being non-parallel to each other to define an inclination angle therebetween that is greater than zero;
- and
- mechanically attaching the lip of the first shell component to the central ring of the first plate, comprising engaging a proximal surface of the central ring of the first plate with a distal surface of the lip of the first shell component, wherein the central ring of the first plate receives the distal rim of the first shell component.
Dependencies are inferred from the claim text.