Patent ID: 11857422
Assignee: ENCORE MEDICAL, L.P.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. An acetabular cup system, comprising:
a cup configured to receive any one of a plurality of liners, the cup comprising:
an outer surface configured to engage an anatomy,
a top face at an upper end of the cup, and
a generally concave inner surface, comprising:
a cylindrical band having disposed therein a plurality of inward-facing recessed scallops adjacent to the top face,
a tapered wall disposed adjacent to the cylindrical band, and
an inner spherical surface adjacent to the tapered wall, the inner spherical surface having a substantially uniform radius of curvature and a single groove interrupting the spherical surface; and

a liner having a substantially convex outer surface configured to be received within the concave inner surface of the cup, the liner comprising:
a rim,
a plurality of outward-projecting scallops adjacent to the rim, and
a locking feature configured to be secured within the single groove disposed in the inner spherical surface of the cup, the locking feature comprising:
an angled portion that has a substantially vertical orientation so as to diverge from the convex outer surface of the liner, and
an extension lip extending substantially perpendicularly from the angled portion, the extension lip configured to engage the single groove of the cup,
wherein a first distance between an upper inside surface of the single groove of the cup and an upper surface of the extension lip of the locking feature is greater than or equal to a second distance from the angled portion to the outermost tip of the extension lip of the locking feature; and

wherein, when the liner is seated in the cup, each of the outward-projecting scallops of the liner are configured to engage with a respective one of the inward-facing recessed scallops of the cup.