Device for sensing implant location and impingement
AssigneeZimmer, Inc.
InventorsKenneth D. Johannaber, John Minck, Jr., Rida Hariri, Derek Dalbey
Life of this patent
Estimating the term…
Abstract
Embodiments of a system and method for assessing hip arthroplasty component movement are generally described herein. A method may include receiving data from a sensor embedded in a femoral head component, the femoral head component configured to fit in an acetabular component, determining information about a magnetic field from the data, and outputting an indication of an orientation, coverage, or a force of the femoral head component relative to the acetabular component.
Claims16
A system for assessing orientation and dynamics of a hip arthroplasty implant, the system comprising:
- a femoral head component including:
- a cap and a magnetic sphere positioned within the cap;
- and
- a three-dimensional (3D) magnetometer located within the cap near the magnetic sphere, the 3D magnetometer to:
- obtain initial magnetic field information;
- and
- obtain updated magnetic field information when the femoral head component is moved during a range of motion test;
- a hall effect sensor located within the cap to register an initial orientation of the femoral head component in reference to an acetabular component based on the initial magnetic field information;
- and
- a processor to:
- receive the initial magnetic field information and the updated magnetic field information;
- determine a relative orientation of the femoral head component in reference to the acetabular component based on the initial magnetic field information and registration of the femoral head component;
- determine a range of motion of the hip arthroplasty implant based on the relative orientation of the femoral head component in reference to the acetabular component as the range of motion test is performed;
- and
- output an indication of the range of motion to a user interface.
A system for assessing orientation and dynamics of a hip arthroplasty implant, the system comprising:
- a femoral head component including:
- a cap and a magnetic sphere positioned within the cap;
- and
- a three-dimensional (3D) magnetometer located within the cap near the magnetic sphere, the 3D magnetometer to:
- obtain initial magnetic field information;
- and
- obtain updated magnetic field information when the femoral head component is moved during a range of motion test;
- a processor to:
- receive the initial magnetic field information and the updated magnetic field information;
- determine a relative orientation of the femoral head component in reference to an acetabular component based on the initial magnetic field information and the updated magnetic field information;
- determine a range of motion of the hip arthroplasty implant based on the relative orientation of the femoral head component in reference to the acetabular component as the range of motion test is performed;
- and
- output an indication of the range of motion to a user interface.
Dependencies are inferred from the claim text.