Patent ID: 11969353
Assignee: ZIMMER, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 19:
20. A prosthesis system for a joint, comprising:
a tray having a circumferential lip forming a recess, the circumferential lip including a lateral groove disposed in an inner surface of a lateral circumferential portion of the circumferential lip and a medial groove disposed in an inner surface of a medial circumferential portion of the circumferential lip, a superior surface of the medial groove of the tray being formed by a medial locking lip projecting radially inward from the inner surface of the medial circumferential portion of the tray; and
a liner coupleable with the tray with an asymmetrical locking portion, the asymmetrical locking portion comprising a lateral toe configured to engage the lateral groove in the tray and a plurality of medial fingers that are resiliently deformable to engage the medial groove of the tray to lock the liner onto the tray, the lateral toe positioned generally diametrically opposite the plurality of medial fingers, the plurality of medial fingers further comprising snap lips each projecting outward from a distal end of each of the plurality of the medial fingers;
wherein the liner and the tray are engageable in a lateral-to-medial direction so that the plurality of medial fingers resiliently deform to let the snap lips pass the medial locking lip projecting radially inward and return to a neutral position, so as to engage the medial groove subsequent to engagement of the lateral toe within the lateral groove;
wherein the medial circumferential portion further includes a medial tab extending from an upper surface thereof and defining a first shape, and the lateral circumferential portion further includes a lateral tab extending from an upper surface thereof and defining a second shape different than the first shape; and
wherein the liner defines at least three medial female receptacles, each of the medial female receptacles formed as a recess in an outer edge of the liner such that each of the medial female receptacles is mateable with the medial tab of the tray, and the liner proximate the lateral toe defines at least three lateral female receptacles, each of the lateral female receptacles formed as a recess in an opposing outer edge of the liner such that each of the lateral female receptacles is mateable with the lateral tab of the tray.