Patent ID: 11877933
Assignee: TORNIER SAS
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 0:
1. A glenoid implant for a shoulder prosthesis for implantation in the glenoid of a scapula of a shoulder joint wherein the shoulder joint includes a humerus, the glenoid implant comprising:
an articular body comprising an articular surface and a plate, wherein the plate comprising:
a first side, a second side, and an external lateral surface, the first side configured to receive a supplemental piece adapted to articulate with the humerus, the second side configured to be oriented toward the glenoid;
a central protrusion extending from the second side, the central protrusion surrounding an opening; and
a plurality of peripheral receptacles extending through the first side and the second side, each of the peripheral receptacles comprises a threaded surface adapted to receive a peripheral screw;

a central fixation element for anchoring the articular body in the glenoid, wherein the central fixation element comprises a lateral external surface that has a threaded portion and is traversed by an opening that extends between a superior end and an inferior end; and
a distal anchor screw for locking rotation of the central fixation element with respect to the glenoid, the distal anchor screw comprising a proximal head and a threaded stem extending distally from the proximal head, the proximal head disposed entirely within the central fixation element,
wherein the threading of the lateral external surface of the central fixation element is in a first direction, while the threading on the stem of the distal anchor screw is in a second direction that is opposite from the first direction, whereby the opposed threading directions result in improved locking, with respect to the glenoid, of a sub-assembly formed by the central fixation element and the distal anchor screw when implanted in the glenoid.