DETECTION OF MISALIGNMENT OF ROBOTIC ARMS
First Claim
1. A system for detecting misalignment of robotic arms, comprising:
- a first robotic arm comprising a first instrument device manipulator (IDM) connected to a distal end of the first robotic arm;
a second robotic arm comprising a second IDM connected to a distal end of the second robotic arm;
a first medical instrument comprising a working channel; and
a second medical instrument, the first robotic arm configured to drive the first medical instrument along a first axis, and the second robotic arm configured to drive the second medical instrument through the working channel of the first medical instrument;
a processor; and
a memory storing computer-executable instructions to cause the processor to;
determine a first force at the first IDM,determine a second force at the second IDM,determine that both of the first and second forces are greater than a threshold force, anddetermine that the first and second robotic arms are misaligned in response to the processor determining that both of the first and second forces are greater than the threshold force.
2 Assignments
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Accused Products
Abstract
Certain aspects relate to systems and techniques for detection of undesirable forces on one or more surgical robotic arms. In one aspect, there is provided a system including a robotic arm, including: two linkages, a joint, a torque sensor, and an instrument device manipulator (IDM). The system may further include a processor configured to measure a first torque value at the joint based on an output of the torque sensor and determine a second torque value at the joint based on a position of the robotic arm. The second torque value may be indicative of a gravitational component of the torque between the two linkages. The processor may be further configured to determine a force at the IDM based a difference between the first and second torque values and determine whether the robotic arm has collided with an object or misaligned based on the force at the IDM.
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Citations
30 Claims
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1. A system for detecting misalignment of robotic arms, comprising:
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a first robotic arm comprising a first instrument device manipulator (IDM) connected to a distal end of the first robotic arm; a second robotic arm comprising a second IDM connected to a distal end of the second robotic arm; a first medical instrument comprising a working channel; and a second medical instrument, the first robotic arm configured to drive the first medical instrument along a first axis, and the second robotic arm configured to drive the second medical instrument through the working channel of the first medical instrument; a processor; and a memory storing computer-executable instructions to cause the processor to; determine a first force at the first IDM, determine a second force at the second IDM, determine that both of the first and second forces are greater than a threshold force, and determine that the first and second robotic arms are misaligned in response to the processor determining that both of the first and second forces are greater than the threshold force. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A non-transitory computer readable storage medium having stored thereon instructions that, when executed, cause at least one computing device to:
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determine a first force at a first IDM connected to a distal end a first robotic arm; determine a second force at a second IDM connected to a distal end a second robotic arm, the first robotic arm configured to drive a first medical instrument comprising a working channel along a first axis, and the second robotic arm configured to drive a second medical instrument through the working channel of the first medical instrument; determine that both of the first and second forces are greater than a threshold force; and determine that the first and second robotic arms are misaligned in response to the determination that both of the first and second forces are greater than the threshold force. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A method of positioning a first robotic arm, comprising:
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determining a first force at a first IDM connected to a distal end of a first robotic arm; determining a second force at a second IDM connected to a distal end of a second robotic arm, the first robotic arm configured to drive a first medical instrument comprising a working channel along a first axis, and the second robotic arm configured to drive a second medical instrument through the working channel of the first medical instrument; determining that both of the first and second forces are greater than a threshold force; and determining that the first and second robotic arms are misaligned in response to the determination that both of the first and second forces are greater than the threshold force. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification