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US 7,708,781 B2Granted
Lateral elbow prosthesis—proximal radioulnar joint
AssigneeAptis Medical, LLC
InventorLuis Roman Scheker
Life of this patent
Estimating the term…
Abstract
A proximal radioulnar joint (lateral elbow) prosthesis includes a radial brace member to be secured to the radius bone and an ulna brace member to be secured to the ulna bone. The radial brace member has a ball at its proximal end, and the ulnar brace member defines a curved cavity which receives and rotationally supports the ball.
Claims8
A proximal radioulnar joint prosthesis, comprising:
- a radial brace member including a rod defining a longitudinal axis and distal and proximal ends;
- and a ball at the proximal end of said rod;
- an ulnar brace member having an upper end and a lower end and including
- a downwardly-extending elongated portion defining an elongated abutment surface shaped to abut and conform to the outer surface of the human ulna bone near its proximal end;
- a projection from said downwardly-extending elongated portion defining a downwardly opening curved recess including means for receiving and supporting said ball for rotation;
- and
- means for mounting said ulnar brace member on a human ulna near the proximal end of the ulna so as to place the projection that defines the downwardly opening curved recess in the proximal radial notch of the human ulna while leaving the proximal ulna intact.
4 more elements
A proximal radioulnar joint prosthesis for mounting to the humerus, radius, and ulna bones of a patient, comprising:
- a radial brace member, including an upwardly-projecting ball and means for mounting said radial brace member on the proximal end of a human radius;
- and
- an ulnar brace member including a projection defining a downwardly opening curved recess which includes means for receiving and rotationally supporting said ball;
- said projection including a base portion having a curved outer surface portion adapted to be received in the proximal radial notch and including at least one part that is separate from the base portion and that, when secured to the base portion, provides at least a portion of the downwardly opening curved recess;
- and including means for fixing said at least one separate part to said base portion;
- said ulnar brace member also including a downwardly extending elongated portion which extends downwardly from said base portion and includes mounting means for mounting said ulnar brace member on an ulna, wherein said ulnar brace member defines an elongated vertical recess between said projection and said downwardly elongated portion, said recess being shaped to receive the front and rear edges of the proximal radial notch.
3 more elements
Dependencies are inferred from the claim text.