Back to results
US 8,945,229 B2Granted
Reverse shoulder orthopaedic implant having a metaglene component with a screw locking cap
AssigneeDePuy Synthes Products, Inc.
InventorKyle E. Lappin
Life of this patent
Estimating the term…
Abstract
A reverse shoulder orthopaedic implant includes a glenosphere component having a lateral bearing surface configured to articulate with a humeral cup of a humeral prosthesis. A metaglene component includes a platform configured to receive glenosphere component.
Claims18
A reverse shoulder orthopaedic implant, comprising:
- a metaglene component having a platform with (i) a number of screw holes extending therethrough, and (ii) an elongated stem extending outwardly from a medial surface thereof, the elongated stem being configured to be implanted into the scapula of a patient and having a bore formed therein, and
- a screw cap having (i) a shaft positioned in the bore of the metaglene component, and (ii) a locking flange extending outwardly from the shaft so as to at least partially cover each of the number of screw holes of the metaglene component;
- a glenosphere component having a bore formed therein, wherein the screw cap is captured in the bore of the glenosphere component;
- wherein, when the screw cap is positioned within the bore of the metaglene component, an upper surface of the screw cap opposite the shaft of the screw cap is flush with an upper surface of the platform opposite the elongated stem of the metaglene component.
1 more element
A reverse shoulder orthopaedic implant, comprising:
- a metaglene component having a platform with (i) a number of screw holes extending therethrough, and (ii) an elongated stem extending outwardly from a medial surface thereof, the elongated stem having a bore formed therein,
- a glenosphere component having a bore formed therein, and
- a screw cap captured in the bore of the glenosphere component, the screw cap being rotatable relative to the glenosphere component and having (i) a shaft positioned in the bore of the metaglene component, and (ii) a locking flange extending outwardly from the shaft so as to at least partially cover each of the number of screw holes of the metaglene component;
- wherein, when the glenosphere component is attached to the metaglene component, an outermost periphery of the platform engages sidewalls defining the bore of the glenosphere component such that at least a portion of the platform and the screw cap are disposed within the bore;
- wherein the locking flange includes a body having an outer surface and a retaining flange extending outwardly from the outer surface, wherein a retaining ring is positioned around the body adjacent the outer surface of the locking flange and secured to the sidewalls of the glenosphere component defining the bore.
2 more elements
A reverse shoulder orthopaedic implant, comprising:
- a metaglene component configured to be implanted into the scapula of a patient, the metaglene component having a platform with (i) a number of screw holes extending therethrough, and (ii) an elongated stem extending outwardly from a medial surface of the platform, the elongated stem having a bore formed therein,
- a number of compression screws positioned in the number of screw holes of the metaglene component, each of the number of compression screws having a screw head with an outer edge,
- a glenosphere component having a bore formed therein, and
- a screw cap secured to the metaglene component, the screw cap comprising (i) a shaft positioned in the bore of the metaglene component, and (ii) a locking flange having an outer edge that overlaps at least a portion of the outer edge of each of the number of compression screws positioned in the number of screw holes of the metaglene component, wherein, when the screw cap is positioned within the bore of the metaglene component, an upper surface of the screw cap opposite the shaft of the screw cap is flush with an upper surface of the platform opposite the elongated stem of the metaglene component;
- wherein, when the glenosphere component is attached to the metaglene component, an outermost periphery of the platform engages sidewalls defining the bore of the glenosphere component such that at least a portion of the platform and the screw cap are disposed within the bore.
2 more elements
Dependencies are inferred from the claim text.