System for determining and tracking movement during a medical procedure
First Claim
1. An image guidance system for tracking a surgical instrument during oral surgery comprising:
- a fixture configured to be removably attached to a patient'"'"'s anatomy in a location spaced apart from a surgical area;
a first tracking assembly including a bracket assembly removably attached to the fixture and a first tracking pattern surface, the first tracking pattern surface including a first optically visible pattern, the bracket assembly positioning the first tracking pattern at a location spaced apart from the surgical area;
a tool for use in the surgical procedure, the tool having a proximate tip end to which a drill bit is attached, an intermediate portion adapted to be held by a user, and a distal end opposite from the tip end;
a second tracking assembly including a second tracking pattern surface mounted to the tool at a location spaced apart from the tip end of the tool so as to be spaced apart from the surgical area and positioned external to the oral cavity during use, the second tracking pattern surface including a second optically visible pattern;
a plurality of cameras mounted at a location spaced apart from the surgical area and the first and second tracking assemblies at a position that permits the cameras, when activated, to capture images of the optically visible patterns on the first and second tracking pattern surfaces;
a reference dataset including the location and orientation of the fixture with respect to a CT scan of the surgical area;
a processing system to process the captured images and configured to recognize the optically visible patterns and triangulate the locations and orientations of the first and second tracking assemblies, the processing system determining the location and orientation of the tracked tool based on the reference dataset and analyzing relative transforms between each camera of the optically visible patterns on the first and second tracking pattern surfaces.
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Accused Products
Abstract
An image guidance system for tracking a surgical instrument during a surgical procedure. The image guidance system includes a plurality of cameras adapted to be located external to a surgical area for capturing images of optically visible patterns. A processing system receives and processes the images to recognize the patterns and triangulate the locations and orientations of each pattern relative to a camera. The processing system uses a reference dataset which defines a reference coordinate system based on alignment to a portion of the oral anatomy. The processing system determines the location and orientation of the tracked instrument based on the reference dataset.
68 Citations
19 Claims
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1. An image guidance system for tracking a surgical instrument during oral surgery comprising:
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a fixture configured to be removably attached to a patient'"'"'s anatomy in a location spaced apart from a surgical area; a first tracking assembly including a bracket assembly removably attached to the fixture and a first tracking pattern surface, the first tracking pattern surface including a first optically visible pattern, the bracket assembly positioning the first tracking pattern at a location spaced apart from the surgical area; a tool for use in the surgical procedure, the tool having a proximate tip end to which a drill bit is attached, an intermediate portion adapted to be held by a user, and a distal end opposite from the tip end; a second tracking assembly including a second tracking pattern surface mounted to the tool at a location spaced apart from the tip end of the tool so as to be spaced apart from the surgical area and positioned external to the oral cavity during use, the second tracking pattern surface including a second optically visible pattern; a plurality of cameras mounted at a location spaced apart from the surgical area and the first and second tracking assemblies at a position that permits the cameras, when activated, to capture images of the optically visible patterns on the first and second tracking pattern surfaces; a reference dataset including the location and orientation of the fixture with respect to a CT scan of the surgical area; a processing system to process the captured images and configured to recognize the optically visible patterns and triangulate the locations and orientations of the first and second tracking assemblies, the processing system determining the location and orientation of the tracked tool based on the reference dataset and analyzing relative transforms between each camera of the optically visible patterns on the first and second tracking pattern surfaces. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 19)
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13. An image guidance system for tracking a surgical instrument during oral surgery comprising:
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a fixture configured to be removably attached to a patient'"'"'s anatomy in an oral cavity at a location spaced apart from a surgical area; a first tracking assembly including a bracket assembly having a first end adjustably attached to the fixture and extending away from the oral cavity, the bracket assembly having a second end attached to a first tracking pattern surface, the bracket assembly permitting the first tracking pattern to be adjustable with respect to the fixture, the first tracking pattern surface including a first optically visible pattern, the bracket assembly positioning the first tracking pattern at a location spaced apart from the oral cavity; a surgical tool for use in the surgical procedure, the tool having a proximate tip end, an intermediate portion adapted to be held by a user, and a distal end opposite from the tip end; a second tracking assembly including a second tracking pattern surface, the second tracking assembly configured to mount to a surgical tool for use in the oral surgery at a location spaced apart from the tip end of the tool so as to be spaced apart from the surgical area and positioned external to the oral cavity during use, the second tracking pattern surface including a second optically visible pattern; a plurality of cameras mounted at a location spaced apart from the surgical area and the first and second tracking assemblies at a position that permits the cameras, when activated, to detect images of the optically visible patterns on the first and second tracking pattern surfaces; a reference dataset including the location and orientation of the fixture with respect to a CT scan of the oral cavity; and a processing system to process the captured images and configured to recognize the optically visible patterns and triangulate the locations and orientations of the first and second tracking assemblies, the processing system determining the location and orientation of the tracked tool based on the reference dataset and analyzing relative transforms between each camera of the optically visible patterns on the first and second tracking pattern surfaces. - View Dependent Claims (14, 15, 16, 17, 18)
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Specification