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US 12,109,126 B1Granted
Alignment guide for humeral or femoral stem replacement prostheses
AssigneeShoulder Innovations, Inc.
InventorStephen B. Gunther
Life of this patent
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Abstract
The disclosure herein provides methods, systems, and devices for assisting alignment of humeral or femoral stems during replacement surgery. In one illustrative embodiment, a slotted disk is configured to position a prosthetic stem into a canal in the humerus when the stem is driven through the slot. In another illustrative embodiment, a similar slotted disk structure is configured to position a prosthetic stem into a canal in the femur.
Claims10
An alignment guide for use with a prosthetic long bone replacement assembly, comprising:
- a support having a peripheral edge at an outer circumference of the support, a superior face and an inferior face opposite the superior face, wherein the inferior face is configured to contact and fit on a bone cut surface of a long bone, wherein the peripheral edge of the support has a thickness defined by a distance from the superior face to the inferior face;
- and
- an aperture within the support configured to guide a prosthetic stem through the aperture into a canal into an operative site,
- wherein the prosthetic stem has an axis extending along a length of the prosthetic stem, wherein the aperture is bounded by sidewalls that define the aperture, the sidewalls having a thickness dimension that extends axially superior or inferior beyond the superior or inferior face of the support in a direction of the prosthetic stem axis,
- wherein the thickness of the sidewalls is greater than the thickness of the peripheral edge of the support;
- and
- a movable structure at the peripheral edge at the outer circumference of the support configured to allow the alignment guide to be disassociated from the prosthetic stem.
4 more elements
Dependencies are inferred from the claim text.