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US 6,102,953 AGranted
Shoulder prosthesis
AssigneeAcumed LLC
InventorRandall J. Huebner
Life of this patent
Estimating the term…
Abstract
A shoulder prosthesis having a head and an elongate stem portion including a proximal end connected to the head, a distal section for insertion into a medullary canal of a humeral bone and an alignment section disposed between the proximal end and distal section. The alignment section includes a plurality of reference marks positioned to facilitate placement of the prosthesis in the bone at a previously determined position.
Claims23
A shoulder prosthesis comprising:
- a head having a rear surface;
- an elongate stem portion including a proximal end for connection to the head and a distal section for insertion into a medullary canal of a humeral bone;
- and
- a conical taper lock structure for joining the head to the stem portion whereby the head can be joined to the stem portion without regard for the angular orientation of the head about an axis perpendicular to the rear surface, the taper lock structure including male and female portions, one portion disposed on the rear surface of the head and the other portion being disposed on the proximal end of the stem portion, with the portion of the taper lock structure on the stem portion having a predetermined, fixed offset from an anterior/posterior plane of the stem portion.
1 more element
A shoulder prosthesis comprising:
- a head having a semi-spherical articulation surface bounded by a generally planar articular margin bounding a rear surface disposed generally normal to a head axis, the head further having a tapered cylindrical socket extending inward from the rear surface, where the rear surface is generally circular in planform and the tapered socket is offset relative to the center of the rear surface;
- and
- a stem portion including a proximal end and a distal shaft for insertion into the medullary canal of a humerus, the distal shaft being configured to lie in an anterior/posterior plane when installed in the humerus, the proximal end including a tapered cylindrical stud having an axis which is oriented parallel to and offset from the anterior/posterior plane when the stem portion is installed in the humerus.
A shoulder prosthesis kit comprising:
- at least one head adapted to replace the head of a humerus;
- at least one distal shaft adapted to be inserted into the medullary canal of a humerus;
- and
- left and right body portions adapted to couple the head to the distal shaft at different positions relative to each other.
1 more element
Dependencies are inferred from the claim text.