US 11,925,562 B2
Lateralized dual-mobility assembly
David W. Rister, Nesbit, MS (US); Stephen J. Lee, Memphis, TN (US); and Jeffrey Lee, Memphis, TN (US)
Assigned to SMITH & NEPHEW, INC., Memphis, TN (US)
Filed by Smith & Nephew, Inc., Memphis, TN (US)
Filed on May 23, 2022, as Appl. No. 17/750,774.
Application 17/750,774 is a continuation of application No. 17/149,068, filed on Jan. 14, 2021, granted, now 11,369,475.
Application 17/149,068 is a continuation of application No. 16/342,120, granted, now 11,013,604, issued on May 25, 2021, previously published as PCT/US2017/056917, filed on Oct. 17, 2017.
Claims priority of provisional application 62/409,064, filed on Oct. 17, 2016.
Prior Publication US 2022/0280304 A1, Sep. 8, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. A61F 2/34 (2006.01); A61F 2/32 (2006.01); A61F 2/36 (2006.01); A61F 2/46 (2006.01); A61F 2/30 (2006.01)
CPC A61F 2/34 (2013.01) [A61F 2/32 (2013.01); A61F 2/36 (2013.01); A61F 2/4684 (2013.01); A61F 2002/30332 (2013.01); A61F 2002/30495 (2013.01); A61F 2002/305 (2013.01); A61F 2002/30614 (2013.01); A61F 2002/30616 (2013.01); A61F 2002/3069 (2013.01); A61F 2002/30769 (2013.01); A61F 2002/3208 (2013.01); A61F 2002/3401 (2013.01); A61F 2002/3403 (2013.01); A61F 2002/3414 (2013.01); A61F 2002/344 (2013.01); A61F 2002/345 (2013.01)] 15 Claims
OG exemplary drawing
 
1. An acetabular system comprising:
an acetabular cup configured for implantation in a patient's acetabular socket, the acetabular cup including an end face, an apex, a cup opening defining a cavity having an inner surface, and a geometric axis defining a medial direction and an opposite lateral direction, the geometric axis extending through the apex and intersects a plane of the end face at a reference point;
a dual-mobility assembly defining a dual pivot including a first pivot point and a second pivot point, wherein the dual-mobility assembly comprises:
a generally hemispherical liner positionable with the cavity of the acetabular cup, the liner including a liner outer surface and a liner cavity defining a liner inner surface;
an insert positionable within the liner cavity, the insert including an insert outer surface and an insert cavity defining an insert inner surface; and
a head positionable within the insert cavity, the head including a head outer surface and a head cavity defining a head inner surface; and
a femoral component including a body and a neck extending at an angle relative to the body, wherein an end portion of the neck is received in the head cavity such that the cup and the femoral component are movable relative to one another about the dual pivot;
wherein the dual-mobility assembly is adjustable between a plurality of configurations, the plurality of configurations including a first configuration and a second configuration;
wherein, with the dual-mobility assembly in the first configuration, the liner is of a first liner species, and the second pivot point has a first position relative to the reference point;
wherein, with the dual-mobility assembly in the second configuration, the liner is of a second liner species, and the second pivot point has a second position relative to the reference point;
wherein the first position is different from the second position, and at least one of the first position or the second position is offset from the reference point in the lateral direction;
wherein the offset has a non-zero value;
wherein the insert inner surface and the head outer surface define an inner articular interface having an inner articular interface diameter, and wherein the inner articular interface facilitates relative pivotal movement of the head and insert about the first pivot point; and
wherein the liner inner surface and the insert outer surface define an outer articular interface having an outer articular interface diameter, and wherein the outer articular interface facilitates relative pivotal movement of the insert and liner about the second pivot point.