Systems and methods for navigation based on ordered sensor records
First Claim
Patent Images
1. A method of tracking a medical instrument in a formation of anatomical passageways, the method comprising:
- receiving, by a control system, a model of the anatomical passageways;
identifying, by the control system, one or more centerlines of the modeled anatomical passageways, the centerlines including a set of candidate match points of the model, wherein each of the candidate match points includes three-dimensional coordinates in a model space;
receiving, by the control system and while the medical instrument is positioned within the anatomical passageways, a set of ordered sensor records generated by one or more sensors of the medical instrument, the set providing a path history of the medical instrument in the anatomical passageways, wherein each sensor record of the set includes three-dimensional coordinates in a patient coordinate space;
determining, by the control system, a relationship between a first sensor record of the set of ordered sensor records, a second sensor record of the set of ordered sensor records, a first candidate match point of the set of candidate match points, and a second candidate match point of the set of candidate match points, wherein the relationship includes a comparison of the three-dimensional coordinates of the first and second sensor records in the patient coordinate space with the three-dimensional coordinates of the first and second candidate match points in the model space;
registering, by the control system, the medical instrument with the model of the anatomical passageways based on the path history and the relationship to locate the medical instrument within the model of the anatomical passageways;
displaying a virtual visualization image in a display system, the virtual visualization image being based on the registering of the medical instrument with the model of the anatomical passageway and depicting a rendered view of the model of the anatomical passageways from a perspective of the medical instrument within the model of the anatomical passageways; and
implementing, by the control system, commands to move the medical instrument based on the registering of the medical instrument with the model of the anatomical passageway.
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Abstract
A method of tracking a medical instrument comprises receiving a model of an anatomical passageway formation and receiving a set of ordered sensor records for the medical instrument. The set of ordered sensor records provide a path history of the medical instrument. The method further comprises registering the medical instrument with the model of the anatomical passageway formation based on the path history.
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Citations
43 Claims
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1. A method of tracking a medical instrument in a formation of anatomical passageways, the method comprising:
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receiving, by a control system, a model of the anatomical passageways; identifying, by the control system, one or more centerlines of the modeled anatomical passageways, the centerlines including a set of candidate match points of the model, wherein each of the candidate match points includes three-dimensional coordinates in a model space; receiving, by the control system and while the medical instrument is positioned within the anatomical passageways, a set of ordered sensor records generated by one or more sensors of the medical instrument, the set providing a path history of the medical instrument in the anatomical passageways, wherein each sensor record of the set includes three-dimensional coordinates in a patient coordinate space; determining, by the control system, a relationship between a first sensor record of the set of ordered sensor records, a second sensor record of the set of ordered sensor records, a first candidate match point of the set of candidate match points, and a second candidate match point of the set of candidate match points, wherein the relationship includes a comparison of the three-dimensional coordinates of the first and second sensor records in the patient coordinate space with the three-dimensional coordinates of the first and second candidate match points in the model space; registering, by the control system, the medical instrument with the model of the anatomical passageways based on the path history and the relationship to locate the medical instrument within the model of the anatomical passageways; displaying a virtual visualization image in a display system, the virtual visualization image being based on the registering of the medical instrument with the model of the anatomical passageway and depicting a rendered view of the model of the anatomical passageways from a perspective of the medical instrument within the model of the anatomical passageways; and implementing, by the control system, commands to move the medical instrument based on the registering of the medical instrument with the model of the anatomical passageway. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 18, 19, 20)
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17. A method of tracking a medical instrument in a formation of anatomical passageways, the method comprising:
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receiving, by a control system, a model of the anatomical passageways; identifying, by the control system, one or more centerlines of the modeled anatomical passageways, the centerlines including a set of candidate match points of the model, wherein each of the candidate match points includes three-dimensional coordinates in a model space; receiving, by the control system, a set of ordered sensor records generated by one or more sensors of the medical instrument while disposed in the anatomical passageways, the set providing a path history of the medical instrument in the anatomical passageways, wherein each sensor record of the set includes three-dimensional coordinates in a patient coordinate space; spatially subsampling the set of ordered sensor records such that no more than one sensor record per unit of spatial resolution is included in a subsampled set of ordered sensor records, the unit of spatial resolution corresponding to a spatial resolution of an imaging technology used in generating the model of the anatomical passageways; determining, by the control system, a relationship between a first sensor record of the subsampled set of ordered sensor records, a second sensor record of the subsampled set of ordered sensor records, a first candidate match point of the set of candidate match points, and a second candidate match point of the set of candidate match points, wherein the relationship includes a comparison of the three-dimensional coordinates of the first and second sensor records in the patient coordinate space with the three-dimensional coordinates of the first and second candidate match points in the model space; registering, by the control system, the medical instrument with the model of the anatomical passageways based on the path history and the relationship; displaying a virtual visualization image in a display system, the virtual visualization image being based on the registering of the medical instrument with the model of the anatomical passageway and depicting a view of the model of the anatomical passageways from a perspective of the medical instrument; and implementing, by the control system, commands to move the medical instrument based on the registering of the medical instrument with the model of the anatomical passageways.
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21. A system for tracking a medical instrument in a formation of anatomical passageways, the system comprising:
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a control system including a processor-readable storage medium and a processor configured to execute programmed instructions stored on the storage medium to; receive a model of the anatomical passageways; identify one or more centerlines of the modeled anatomical passageways, the centerlines including a set of candidate match points of the model, wherein each of the candidate match points includes three-dimensional coordinates in a model space; receive a set of ordered sensor records generated by a sensor system of the medical instrument while the medical instrument is positioned within the anatomical passageways, the set of ordered sensor records providing a path history of the medical instrument in the anatomical passageways, wherein each sensor record of the set includes ordered position and orientation information from the sensor system, the position information including three-dimensional coordinates in a patient coordinate space; determine a relationship between a first sensor record of the set of ordered sensor records, a second sensor record of the set of ordered sensor records, a first candidate match point of the set of candidate match points, and a second candidate match point of the set of candidate match points, wherein the relationship includes a comparison of the three-dimensional coordinates of the first and second sensor records in the patient coordinate space with the three-dimensional coordinates of the first and second candidate match points in the model space; and register the medical instrument with the model of the anatomical passageways based on the path history and the relationship to locate the medical instrument within the model of the anatomical passageways; display a virtual visualization image in a display system, the virtual visualization image being based on registering of the medical instrument with the model of the anatomical passageway and depicting a view of the model of the anatomical passageways from a perspective of the medical instrument; and implement, by the control system, commands to move the medical instrument based on the registering of the medical instrument with the model of the anatomical passageways. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43)
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Specification