Virtual implant placement in the OR
First Claim
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1. A virtual implant placement system for determining a first cut plane to resect a first bone, the first bone and a second bone being part of a joint, the system comprising:
- a first tracking assembly adapted to be supported by the first bone and operable to generate a first position data corresponding to a plurality of first positions of the first tracking assembly as the joint is articulated;
a second tracking assembly adapted to be supported by the second bone and operable to generate a second position data;
a first implant model of a first implant, the first implant model linked to the first tracking assembly, the first implant model having at least two versions;
a second model of one of a second implant and the second bone, the second model linked to the second tracking assembly; and
a processing device determining the first cut plane by;
digitally linking at least a first version of the first implant model to the first bone to construct a virtual joint defining a relationship between articulating surfaces of the first implant model and the second model;
modelling a movement of the virtual joint based on movements of the first bone relative to the second bone based on a tracking of the first and the second tracking assemblies;
repeating the digitally linking and the modelling with a second version of the first implant model; and
determining the first cut plane based on a selected version of the first implant model, the first position data, the second model, and the second position data through said movement of the virtual joint; and
a viewing device displaying data related to the first cut plane.
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Abstract
A virtual implant placement method and system comprising models of implants and/or bones linked to tracking assemblies mounted onto the bones. A joint model is constructed intraoperatively based on the positions of the tracking assemblies to determine the positions of cut planes.
126 Citations
38 Claims
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1. A virtual implant placement system for determining a first cut plane to resect a first bone, the first bone and a second bone being part of a joint, the system comprising:
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a first tracking assembly adapted to be supported by the first bone and operable to generate a first position data corresponding to a plurality of first positions of the first tracking assembly as the joint is articulated; a second tracking assembly adapted to be supported by the second bone and operable to generate a second position data; a first implant model of a first implant, the first implant model linked to the first tracking assembly, the first implant model having at least two versions; a second model of one of a second implant and the second bone, the second model linked to the second tracking assembly; and a processing device determining the first cut plane by; digitally linking at least a first version of the first implant model to the first bone to construct a virtual joint defining a relationship between articulating surfaces of the first implant model and the second model; modelling a movement of the virtual joint based on movements of the first bone relative to the second bone based on a tracking of the first and the second tracking assemblies; repeating the digitally linking and the modelling with a second version of the first implant model; and determining the first cut plane based on a selected version of the first implant model, the first position data, the second model, and the second position data through said movement of the virtual joint; and a viewing device displaying data related to the first cut plane. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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Specification