Ceramic acetabular shell liners with augments
AssigneeDepuy Ireland Unlimited Company
InventorsLewis Butler, Ian J. Flatters, Andrew W. Donn, Alena M. Brandewie
Life of this patent
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Abstract
An acetabular prosthesis for use in a hip arthroplasty surgical procedure is disclosed. The acetabular prosthesis includes a ceramic acetabular shell liner component configured to be secured to an acetabular shell component. The acetabular prosthesis also includes a metal ring affixed to and encircling the ceramic acetabular shell liner component. The acetabular prosthesis also includes an augment molded to and distally extending from the metal ring. The augment is shaped to modify a range of motion of a femoral prosthetic component when the femoral prosthetic component is fitted into the ceramic acetabular shell liner component. Other embodiments are also disclosed.
Claims19
An acetabular prosthesis for use in a hip arthroplasty surgical procedure, the acetabular prosthesis comprising:
- a ceramic acetabular shell liner component configured to be secured to an acetabular shell component, wherein the ceramic acetabular shell liner component includes a rim having an outer edge that is tapered outwardly in a distal direction;
- and
- an augment, separate from the ceramic acetabular shell liner component, wherein the augment comprises a set of tabs that extend in a proximal direction, wherein each tab includes (i) an inner side that is tapered and configured to interface with the corresponding taper of the outer edge of the rim of the ceramic acetabular shell liner to form an interference lock to secure the augment to the ceramic acetabular shell liner component when the ceramic acetabular shell liner component is fitted into the acetabular shell component and (ii) an outer side, opposite the inner side, that is spaced apart from the ceramic acetabular shell liner component when the augment is secured to the ceramic acetabular shell liner component.
An acetabular prosthesis for use in a hip arthroplasty surgical procedure, the acetabular prosthesis comprising:
- an acetabular shell liner component configured to be secured to an acetabular shell component, the acetabular shell liner component comprising:
- a ceramic inner bearing layer having a ceramic semi-hemispherical body and an integral ceramic augment extending distally from the semi-hemispherical body;
- and
- a metallic outer reinforcement layer affixed to an outer wall of the ceramic semi-hemispherical body and an outer wall of the integral ceramic augment of the ceramic inner bearing layer.
An acetabular prosthesis for use in a hip arthroplasty surgical procedure, the acetabular prosthesis comprising:
- an acetabular shell component;
- a ceramic acetabular shell liner component configured to be secured to acetabular shell component;
- and
- an augment, separate from the ceramic acetabular shell liner component, wherein the augment comprises a set of tabs that extend in a proximal direction and are shaped such that each tab of the set of tabs is interposed between and in contact with each of the ceramic acetabular shell liner component and the acetabular shell component when the ceramic acetabular shell liner component is fitted into the acetabular shell component.
Dependencies are inferred from the claim text.