US 12,274,623 B2
Ceramic acetabular shell liners with augments
Lewis Butler, Leeds (GB); Ian J. Flatters, Sheffield (GB); Andrew W. Donn, Vancouver (CA); and Alena M. Brandewie, Versailles, OH (US)
Assigned to DEPUY IRELAND UNLIMITED COMPANY, Ringaskiddy (IE)
Filed by DEPUY IRELAND UNLIMITED COMPANY, Ringaskiddy (IE)
Filed on Mar. 4, 2022, as Appl. No. 17/686,823.
Application 17/686,823 is a division of application No. 16/710,641, filed on Dec. 11, 2019, granted, now 11,291,549.
Prior Publication US 2022/0183848 A1, Jun. 16, 2022
Int. Cl. A61F 2/34 (2006.01); A61F 2/30 (2006.01); A61F 2/32 (2006.01)
CPC A61F 2/34 (2013.01) [A61F 2/30734 (2013.01); A61F 2002/30736 (2013.01); A61F 2002/3241 (2013.01); A61F 2002/3441 (2013.01); A61F 2002/3483 (2013.01); A61F 2002/3493 (2013.01); A61F 2310/00023 (2013.01); A61F 2310/00179 (2013.01)] 19 Claims
OG exemplary drawing
 
1. 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.
 
7. 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.