Arthroplasty components
AssigneeDeltoid, LLC
InventorC. Scott HUMPHREY
Life of this patent
Estimating the term…
Abstract
Systems, kits and methods for long bone arthroplasty that include arrays of humeral head prosthesis components, each having on a first side a bone articulation surface that has an overall generally hemielliptical convex shape defined by a major axis and a minor axis, the bone articulation surface having an apex and a base that each has an non-circular elliptical cross sectional shape, the prosthesis components having on an opposite side, adjacent the base, a bone contact surface. The humeral head prosthesis components in the arrays vary from having a base with a more circular cross sectional shape to a more elongated elliptical cross sectional shape with increasing size.
Claims20
A method for implanting a modular system for long bone arthroplasty comprising:
- (a) providing arthroplasty components comprising:
- i. an array of prosthesis components, the array comprising a plurality of humeral head prosthesis components each comprising on a first side a bone articulation surface that has an overall generally hemielliptical convex shape defined by a major axis and a minor axis and comprises an apex and a base that each has an non-circular elliptical cross sectional shape, and on an opposite side, adjacent the base, a bone contact surface
- wherein, when a selected humeral head prosthesis component is positioned for use in a humerus bone, the major axis is oriented along a frontal plane in the direction from inferior to superior and the minor axis is oriented along a sagittal plane from anterior to posterior.
A kit for long bone arthroplasty, comprising:
- an array of prosthesis components, the array comprising a plurality of convex prosthesis components each comprising on a first side a bone articulation surface that has an overall generally hemielliptical convex shape and comprises an apex and a base that each has an non-circular elliptical cross sectional shape, and on an opposite side, adjacent the base an engagement surface for one or more of contact with a bone and engagement with one of a coupler component and an anchor;
- and
- at least one of:
- (i) at least one generally disc shaped coupler component comprising an convex prosthesis component side comprising a receiving recess for the engagement surface of the convex prosthesis component, and a sidewall that is defined by a lateral edge that bounds the humeral head prosthesis component side and an opposite bone contact side and has a geometry selected from cylindrical, frustoconical and frustohemispherical;
- and
- (ii) at least one anchor component,
- wherein a selected component from the array of convex prosthesis components is engageable directly or indirectly with one of the coupler component and the anchor component to provide an arthroplasty assembly, wherein the position of the convex prosthesis component can be varied rotationally around an engagement axis with the coupler component or the anchor component.
Dependencies are inferred from the claim text.