Arthroplasty prostheses with multi-axis fixation
AssigneeCatalyst Orthoscience Inc.
InventorSteven S. Goldberg
Life of this patent
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Abstract
Arthroplasty components include an articular surface and a bone-facing surface. In some examples, the bone-facing surface bears at least one anchoring element adapted for an oblique implantation trajectory. The anchoring element includes a reinforcement plate, a dowel, and surface features. Each surface feature resists forces acting along a different direction. In other examples, the bone-facing surface bears anchoring elements that deform along the primary or longest axis of the anchoring element during insertion. In yet other examples, the bone-facing surface is enlarged relative to the articular surface so that at least a portion of the perimeter of the articular surface is circumscribed by the perimeter of the bone-facing surface.
Claims20
A glenoid arthroplasty prosthesis comprising:
- a body comprising an articular surface and a bone-facing surface opposite the articular surface, wherein the articular surface comprises an articular peripheral edge, wherein the bone-facing surface comprises a bone-facing peripheral edge, wherein the bone-facing peripheral edge has a larger perimeter than the articular peripheral edge.
A glenoid arthroplasty prosthesis comprising:
- a body comprising an articular surface and a bone-facing surface opposite the articular surface, wherein the articular surface comprises an articular peripheral edge, wherein the bone-facing surface comprises a bone-facing peripheral edge;
- wherein in a lateral view of the body, at least a first portion of the articular peripheral edge is circumscribed by a corresponding first portion of the bone-facing peripheral edge.
A glenoid arthroplasty prosthesis comprising:
- a body comprising an articular surface and a bone-facing surface opposite the articular surface, wherein the articular surface has a smaller area than the bone-facing surface;
- wherein in a lateral view of the body, at least a first portion of the bone-facing surface extends outwardly past the articular surface along a first direction selected from the group consisting of an anterior direction, a posterior direction, a superior direction, an inferior direction, an antero-superior direction, an antero-inferior direction, a postero-superior direction, and a postero-inferior direction.
A glenoid arthroplasty prosthesis comprising:
- a body comprising an articular surface and a bone-facing surface opposite the articular surface, wherein the articular surface comprises an articular peripheral edge, wherein the articular surface has a surface normal vector at each point along the articular peripheral edge, wherein each surface normal vector forms an intersection with the bone-facing surface, wherein the bone-facing surface comprises a bone-facing peripheral edge;
- wherein in a lateral view of the body, each point along the bone-facing peripheral edge is outwardly spaced apart from the corresponding intersection of the surface normal vector and the bone-facing surface.
Dependencies are inferred from the claim text.