Tool grip calibration for robotic surgery
First Claim
1. An apparatus comprising:
- a master input device configured to generate a master input signal; and
a processor configured to receive the master input signal;
a robotic manipulator configured to support a mounted end effector and manipulate the mounted end effector in a plurality of degrees of freedom, the robotic manipulator transmitting a signal to the processor indicating mounting of the end effector onto the robotic manipulator;
wherein the processor is configured to;
calibrate a static configuration of the master input device to a predetermined configuration of the mounted end effector in response to receiving the signal indicating mounting of the end effector onto the robotic manipulator, the calibration generating a calibration offset;
based on the calibration offset, drive the end effector in the plurality of degrees of freedom in response to the master input signal.
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Abstract
Telerobotic, telesurgical, and surgical robotic devices, systems, and methods selectively calibrate end effector jaws by bringing the jaw elements into engagement with each other. Commanded torque signals may bring the end effector elements into engagement while monitoring the resulting position of a drive system, optionally using a second derivative of the torque/position relationship so as to identify an end effector engagement position. Calibration can allow the end effector engagement position to correspond to a nominal closed position of an input handle by compensating for wear on the end effector, the end effector drive system, then manipulator, the manipulator drive system, the manipulator/end effector interfacing, and manufacturing tolerances.
191 Citations
20 Claims
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1. An apparatus comprising:
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a master input device configured to generate a master input signal; and a processor configured to receive the master input signal; a robotic manipulator configured to support a mounted end effector and manipulate the mounted end effector in a plurality of degrees of freedom, the robotic manipulator transmitting a signal to the processor indicating mounting of the end effector onto the robotic manipulator; wherein the processor is configured to; calibrate a static configuration of the master input device to a predetermined configuration of the mounted end effector in response to receiving the signal indicating mounting of the end effector onto the robotic manipulator, the calibration generating a calibration offset; based on the calibration offset, drive the end effector in the plurality of degrees of freedom in response to the master input signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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Specification