Adjustable provisional articulating device
AssigneeOrthopaedic Innovations, Inc.
InventorTodd J. Hein
Life of this patent
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Abstract
The present invention relates to an adjustable provisional device for aligning a joint center distance of a joint prosthesis to a natural joint center distance. The device includes a neck having a groove and a main body with a bore for receiving the neck.
Claims15
An adjustable provisional device for aligning a joint center distance of a joint prosthesis to a natural joint center distance comprising:
- a bearing;
- a neck attachable to the bearing, the neck having a plurality of grooves cir comferential space apart from one another along the length of the neck;
- and
- a main body with a bore for receiving the neck;
- and
- a retaining mechanism attached to the main body for retaining the neck in the main body at one of the grooves.
A device for provisionally aligning a prosthetic bearing and a neck comprising:
- a neck component attachable to the bearing and having a plurality of grooves spaced apart along the length of the neck;
- and
- a main body including a bore for receiving the neck;
- a locking mechanism on the body for locking the neck to the body that includes a clasp component contacting the neck component at one of the grooves of the plurality of grooves, the clasp component including a U-shaped wafer in reversible contact with the neck, the water at a notch in the body and a spring in communication with the U-shaped wafer.
A method for adjustably determining neck length of a prosthetic implant comprising:
- providing a neck component wherein the neck component has a first groove and a second groove spaced along the length of the neck;
- providing a main body with a bore for receiving the neck component wherein the main body includes a clasp mechanism attached to the main body at the bore for retaining the neck at one of the grooves, wherein the clasp mechanism includes a U-shaped wafer in reversible contact with the neck at a notch and a spring in communication with the U-shaped wafer;
- retaining the neck component in the bore of the main body at the first groove;
- and
- moving the neck component laterally so the clasp mechanism receives the neck at the second groove.
An adjustable provisional device for aligning a joint center distance of a joint prosthesis to a natural joint center distance, comprising:
- a bearing;
- a neck attachable to the bearing, the neck having a plurality of spaced a part, cir cumferential grooves;
- a main body with a bore terminating an annulus for receiving the neck wherein the main body includes a clasp mechanism attached to the main body at the annulus, the clasp mechanism including a U-shaped wafer in reversible contact with the neck the wafer at the and a spring in communication with the U-shaped wafer, wherein the clasp mechanism retains the neck at one of the grooves of the plurality of grooves.
Dependencies are inferred from the claim text.