Implant stability sensor system and method
AssigneeOrthoIQ, LLC
InventorsDonald Eugene Rea, Phillip Ormond Merritt, Sahil Kashyap, Alan Aaron Davidner, Randall Carl Danta, Kimberly Elasky
Life of this patent
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Abstract
A system for detecting motion between an implant and a bone that can optionally include: a bone locator means configured to be coupled to the bone, an implant attachment means configured to be coupled to the implant, and a data analysis means. The implant attachment means includes a detection means, and the implant attachment means defines one or more apertures or surfaces for receiving a force from a force inducing means.
Claims20
A system for detecting motion between an implant and a bone, the system comprising:
- a bone locator configured to be coupled to the bone;
- an implant attachment configured to be coupled to the implant, wherein:
- the implant attachment comprises a detector, and
- the implant attachment defines one or more apertures or surfaces for receiving a force from a force inducer,
- wherein the detector includes a motion detector that is removably attached to the implant attachment and monitors the implant for movement between the bone and the implant when the implant is at rest and when the implant is under force;
- and
- a data analyzer for determining the motion between the implant and the bone when the implant is at rest and when the implant is under force.
A computer-implemented method of measuring implant stability, the method comprising:
- receiving, from a camera to recognize position of a bone locator in a field of view of the camera, a first image of the bone locator affixed to a bone, wherein the camera is removably attached to an implant;
- determining a first location of the bone locator in the first image of the field of view of the camera;
- receiving, from a sensor removably coupled to an implant attachment attached to the implant, force signals indicative of forces induced on an implant being coupled to the bone;
- receiving, from the camera, a second image of the bone locator affixed to the bone;
- determining a second location of the bone locator in the second image of the field of view of the camera;
- determining a relative motion between the implant and the bone based on a difference between the second location when the implant is under force and the first location when the implant is at rest;
- and
- outputting an indication of the implant stability based on the determined relative motion of the motion between the implant and the bone.
A non-transitory computer-readable medium comprising computer-readable instructions, wherein the computer-readable instructions, when executed by a processor, cause the processor to perform operations comprising:
- receiving, from a machine vision camera, a first image of a bone locator affixed to a bone;
- determining a first location of the bone locator in the first image of a field of view of the machine vision camera;
- receiving, from a sensor removably coupled to an implant attachment attached to the implant, force signals indicative of forces induced on an implant being coupled to the bone, wherein the machine vision camera is removably attached to the implant attachment, and the implant attachment receives a force from a force inducer driving the forces on the implant;
- receiving, from the machine vision camera, a second image of the bone locator affixed to the bone;
- determining a second location of the bone locator in the second image of the field of view of the machine vision camera;
- determining a relative motion between the implant and the bone based on a difference between the second location when the implant is under force and the first location when the implant is at rest;
- and
- outputting an indication of implant movement based on the determined relative motion.
Dependencies are inferred from the claim text.