Automated alignment
First Claim
1. A method for registering an elongate medical instrument relative to nearby anatomical structures, comprising:
- moving a distal portion of a robotically controlled elongate medical instrument between a first position in situ and a second position in situ relative to an instrument coordinate reference frame;
tracking movement of the distal portion of the medical instrument relative to the instrument coordinate reference frame using a kinematic model;
tracking movement of the distal portion of the medical instrument relative to a localization coordinate reference frame using one or more localization sensors coupled to the distal portion of the medical instrument;
determining an orientation of the instrument distal end portion relative to both the instrument coordinate reference frame and the localization coordinate reference frame; and
adjusting an orientation of the instrument coordinate reference frame to minimize a difference between the determined orientations using the kinematic model and localization sensors.
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Accused Products
Abstract
Systems and method are disclosed whereby elongate medical instruments may be registered to adjacent tissue structures and other structures, and may be navigated and operated in a coordinated fashion to maximize ranges of motion, ease of use, and other factors. A method for registering an instrument relative to nearby structures may comprise moving a portion of the instrument between two in situ positions, tracking movement during this movement with both a kinematic model and also a localization sensor based configuration, determining the orientation of the tracked portion relative to both the instrument coordinate system used in the kinematic modeling and also a localization coordinate reference frame, and adjusting the orientation of the instrument coordinate reference frame to minimize the difference between determined orientations using the kinematic model and localization sensors. Methods and configurations for navigating coupled and registered instrument sets are also disclosed.
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Citations
18 Claims
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1. A method for registering an elongate medical instrument relative to nearby anatomical structures, comprising:
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moving a distal portion of a robotically controlled elongate medical instrument between a first position in situ and a second position in situ relative to an instrument coordinate reference frame; tracking movement of the distal portion of the medical instrument relative to the instrument coordinate reference frame using a kinematic model; tracking movement of the distal portion of the medical instrument relative to a localization coordinate reference frame using one or more localization sensors coupled to the distal portion of the medical instrument; determining an orientation of the instrument distal end portion relative to both the instrument coordinate reference frame and the localization coordinate reference frame; and adjusting an orientation of the instrument coordinate reference frame to minimize a difference between the determined orientations using the kinematic model and localization sensors. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method for registering an elongate flexible catheter instrument relative to nearby anatomical structures, comprising:
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moving a distal portion of a robotically controlled elongate flexible catheter instrument between a first position in situ and a second position in situ relative to an instrument coordinate reference frame, wherein the catheter is at least partially disposed in a lumen of an elongate flexible sheath instrument; tracking movement of the distal portion of the medical instrument relative to the instrument coordinate reference frame using a kinematic model; tracking movement of the distal portion of the medical instrument relative to a localization coordinate reference frame using one or more localization sensors coupled to the distal portion of the medical instrument; determining an orientation of the instrument distal end portion relative to both the instrument coordinate reference frame and the localization coordinate reference frame; and adjusting an orientation of the instrument coordinate reference frame to minimize a difference between the determined orientations using the kinematic model and localization sensors, wherein in the first position in situ, the distal portion of the catheter instrument is substantially coincident with a coordinate axis representing a substantially unloaded, substantially straight, longitudinal axis of the distal portion of the catheter instrument, and the second position in situ is a curved position for the distal portion of the catheter instrument. - View Dependent Claims (17, 18)
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Specification