INSTRUMENT FORCE SENSOR USING STRAIN GAUGES IN A FARADAY CAGE

    公开(公告)号:US20190069966A1

    公开(公告)日:2019-03-07

    申请号:US16072140

    申请日:2017-01-31

    Abstract: A surgical instrument includes a force sensor apparatus that is immune to noise from arcing cautery without relying on fiber optic strain gauges, and that is autoclabable. The surgical instrument includes a housing, a shaft, the force sensor apparatus, a joint, and an end component. The force sensor apparatus includes at least one strain gauge that is enclosed in a Faraday cage. The Faraday cage includes a sensor capsule that includes one or more strain gauges, a cable shield tube connected to the sensor capsule, and an electronics enclosure connected to the cable shield tube. The sensor capsule is positioned between the joint and the shaft. The cable shield tube extends through the shaft to the electronics enclosure that is within the housing.

    AUTOMATIC MOTION DAMPING OF TELEOPERATED SURGICAL SYSTEM MANIPULATORS

    公开(公告)号:US20230138396A1

    公开(公告)日:2023-05-04

    申请号:US17976510

    申请日:2022-10-28

    Abstract: A teleoperated surgical system includes a manipulator, an electric motor, and a power circuit. The motor is operatively connected to and configured to drive movement of at least a portion of the manipulator. The power circuit includes a plurality of wires and a switch. The wires connect a selectively activated power source to the motor. The switch is connected to the wires between the power source and the motor. On a first condition in which the power source changes from an activated state to a deactivated state, the switch short-circuits the motor to cause the unpowered motor to automatically dampen motion of the at least a portion of the manipulator. On a second condition in which the power source changes from the deactivated state to the activated state, the switch electrically connects the motor to the power source to supply operating power from the power source to the motor via the wires.

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