Methods, systems, and devices for limiting torque in robotic surgical tools
First Claim
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1. A surgical system, comprising:
- a tool driver of a robotic surgical system, the tool driver being configured to releasably and replaceably couple to a surgical tool including an elongate shaft with an end effector at a distal end thereof, and the tool driver including a first motor, a first actuator configured to be driven by the first motor to actuate a first function of the end effector, a first torque limiting mechanism that sets a first torque threshold for the first actuator, a second actuator configured to be driven by the first motor to actuate a second function of the end effector, and a second torque limiting mechanism that sets a second torque threshold for the first actuator that is different from the first torque threshold.
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Abstract
Various exemplary methods, systems, and devices for limiting torque in robotic surgical tools are provided. In general, a surgical tool can be configured to releasably and removably couple to a robotic surgical system. The robotic surgical system can include a motor configured to provide torque to the surgical tool to drive two different functions of the surgical tool. The surgical tool can include two torque limiting mechanisms, each associated with the motor, each associated with one of the functions, and each configured to limit an amount of the torque from the motor that drives the function associated therewith.
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Citations
20 Claims
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1. A surgical system, comprising:
a tool driver of a robotic surgical system, the tool driver being configured to releasably and replaceably couple to a surgical tool including an elongate shaft with an end effector at a distal end thereof, and the tool driver including a first motor, a first actuator configured to be driven by the first motor to actuate a first function of the end effector, a first torque limiting mechanism that sets a first torque threshold for the first actuator, a second actuator configured to be driven by the first motor to actuate a second function of the end effector, and a second torque limiting mechanism that sets a second torque threshold for the first actuator that is different from the first torque threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A surgical system, comprising:
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a surgical tool including an elongate shaft having an end effector at a distal end thereof; and a tool driver of a robotic surgical system, the tool driver being configured to releasably couple to the surgical tool, the tool driver including a first actuator configured to be actuated to cause the end effector to perform a first function, a second actuator configured to be actuated to cause the end effector to perform a second function, a first motor configured to selectively actuate each of first and second actuators, a first torque limiting mechanism configured to limit an amount of torque applied by the motor to the first actuator, and a second torque limiting mechanism configured to limit an amount of torque applied by the motor to the second actuator. - View Dependent Claims (15, 16, 17)
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18. A surgical method, comprising:
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advancing an end effector of a surgical tool into a body of a patient using a robotic surgical system, the surgical tool being releasably and replaceably coupled to the robotic surgical system; actuating a single motor of the robotic surgical system to drive a first actuator of the robotic surgical system and thereby cause the end effector to execute a first function in the body of the patient, the motor having a maximum torque output, and an amount of torque applied by the motor to the first actuator being prevented from exceeding a first torque threshold that is less than the maximum torque output; and actuating the single motor of the robotic surgical system to cause the end effector to execute a second function in the body of the patient that is different from the first function, an amount of torque applied by the motor to the second actuator being prevented from exceeding a second torque threshold that is less than the maximum torque output and that is different from the first torque threshold. - View Dependent Claims (19, 20)
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Specification