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1. (WO2017035479) DIRECTIONAL LOCKING REVERSE SHOULDER PROSTHESES AND SYSTEMS

Pub. No.:    WO/2017/035479    International Application No.:    PCT/US2016/049015
Publication Date: Fri Mar 03 00:59:59 CET 2017 International Filing Date: Sat Aug 27 01:59:59 CEST 2016
IPC: A61F 2/40
A61F 2/30
Applicants: ZIMMER, INC.
Inventors: HUMPHREY, Steven
WERNLE, James D.
HUCKY, Joanna
HOAG, Stephen H.
DYE, Donald W.
WALZ, Kenton A.
WAGNER, Terry W.
MACKE, Kathleen
GILLARD, Duane
BYRD, Brian D.
YAMAGUCHI, Ken
Title: DIRECTIONAL LOCKING REVERSE SHOULDER PROSTHESES AND SYSTEMS
Abstract:
The present disclosure relates to prosthesis systems having trays and liners having an asymmetrical locking mechanism to bias the strength of the liner to resist loading forces and associated methods. The tray (202) has a lateral groove (206) disposed in an inner surface of a lateral circumferential portion (210) of the tray and a medial groove (208) disposed in an inner surface of a medial circumferential portion (212) of the tray. The liner (204) has an upper segment and a lower segment. The liner has a locking portion for lockingly engaging the tray that includes the lower segment. The locking portion has a lateral toe (218) positioned generally diametrically opposite a plurality of resiliently deformable medial fingers (220) defined therein. The liner and the tray are engageable in a lateral-to-medial direction so that the plurality of medial fingers can resiliently deform to engage the medial groove subsequent to engagement of the lateral toe within the lateral groove.