Patent ID: 11931264
Assignee: HOWMEDICA OSTEONICS CORP.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A humeral head system comprising:
an articular body comprising a convex articular surface and a coupling portion, the coupling portion disposed on a side of the articular body opposite the convex articular surface;
a coupler comprising a first portion configured to mate with the coupling portion and a second portion opposite the first portion, the second portion configured to mate with another member of a joint prosthesis;
wherein the coupler is configured to provide a fixed rotational position between the articular body and the coupler to provide a selected degree of offset of the articular surface to the other member of the joint prosthesis, wherein the coupler comprises a threaded channel extending from a first end surface of the coupler to a second end surface of the coupler, the channel providing access to a surface of one or both of the articular body and the other member of the joint prosthesis, and wherein the threaded channel is configured to engage a tool to apply a load to the articular body;
wherein the coupler comprises an offset window disposed between the first portion and the second portion of the coupler;
wherein the coupler comprises a plate extending transverse to the second portion, the offset window comprising a slot formed in the plate configured to uncover indicia indicative of an extent of eccentricity of the articular body to the other member of the joint prosthesis; and

a humeral anchor comprising the other member of the joint prosthesis, the humeral anchor comprising indicia of eccentricity, the slot uncovering different indicia in different rotational positions of the coupler to the humeral anchor, wherein the rotational positions are changed by rotation about a longitudinal axis extending through the second portion of the coupler.