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AssigneeStryker European Holdings I, LLC
InventorsBernd Simon, Arno Blau
Life of this patent
Estimating the term…
Abstract
A method and a corresponding device is proposed, for determining a location on a bone surface and for performing a simulation of an insertion of an implant based on the determined location. The simulation may comprise the steps of identifying an implantation axis of the bone in the first image, and aligning a visualization of the implant with the implantation axis, with respect to the determined location.
Claims22
A method for assisting an insertion of an implant, the method comprising the steps of:
- determining a location on a bone surface in a first image generated from a first direction by means of an imaging unit;
- performing a first simulation of an insertion of an intramedullary rod based on the determined location, the first simulation comprising:
- identifying an implantation axis of the bone in the first image,
- aligning a virtual visualization of the intramedullary rod with the implantation axis, with respect to the determined location;
- comparing the positioning of the virtual visualization of the intramedullary rod according to the simulated insertion with an optimal virtual visualization of the intramedullary rod overlaid on the first image on an intended positioning;
- determining a deviation between the positioning of the virtual visualization of the simulated insertion and the positioning of the optimal virtual visualization of the intramedullary rod;
- resecting the bone after making a determination that the deviation falls within a predetermined range;
- and
- inserting the intramedullary rod into the resected bone at the determined location.
A method for assisting an insertion of an implant, the method comprising:
- obtaining a first image of the bone generated from a first direction by means of an imaging unit;
- determining a location on a bone surface in the first image;
- performing a first simulation of an insertion of an intramedullary rod based on the determined location, the first simulation comprising:
- identifying an implantation axis of the bone in the first image, using a virtual visualization of the intramedullary rod at the determined location;
- obtaining a second image of the bone generated from a second direction by means of the imaging unit;
- identifying the location, determined in the first image, in the second image based on a bone model showing the bone from the second direction;
- performing a second simulation of an insertion of the intramedullary rod based on the identified location, the second simulation comprising:
- identifying the implantation axis of the bone in the second image,
- aligning a virtual visualization of the intramedullary rod with the implantation axis of the second image, with respect to the identified location;
- comparing the positioning of the virtual visualization of the intramedullary rod according to the simulated insertion with an optimal virtual visualization of the intramedullary rod overlaid on the first and second images on an intended positioning;
- determining a deviation between the positioning of the virtual visualization of the simulated insertion with the positioning of the optimal virtual visualization of the intramedullary rod;
- resecting the bone after making a determination that the deviation falls within a predetermined range;
- and
- inserting the intramedullary rod into the resected bone at the determined location.
A device for assisting an insertion of an implant, the device comprising:
- a monitor for visualizing an image of a bone;
- a pointing device including a tip and a shaft for determining a location on a bone surface in the image, which location is a possible entry point, the tip being radiopaque;
- and
- a processing unit adapted for performing a simulation of an insertion of an intramedullary rod into the bone with respect to the determined location, the simulation including identifying an implantation axis of the bone in the image, aligning a virtual visualization of the implant with the implantation axis, with respect to the determined location, comparing the positioning of the virtual visualization of the intramedullary rod according to the simulated insertion with an optimal virtual visualization of the intramedullary rod overlaid on the first image on an intended positioning, and determining a deviation between the positioning of the virtual visualization of the simulated insertion and the positioning of the optimal virtual visualization of the intramedullary rod, wherein a visualization of the intramedullary rod is shown in relation to the bone in the image.
Dependencies are inferred from the claim text.