Abstract: An instrument drive unit includes a housing configured to be coupled to a surgical robotic arm, a motor assembly, and a flex spool assembly. The motor assembly is rotatably disposed within the housing. The flex spool assembly includes a first printed circuit board mounted to the housing, a second printed circuit board configured to be non-rotatably coupled to and electrically connected to the motor assembly, and a first flex circuit. The first flex circuit has a first end portion connected to the first printed circuit board, a second end portion connected to the second printed circuit board, and an intermediate portion coiled about the second printed circuit board such that rotation of the motor assembly relative to the housing effects movement of the second end portion of the first flex circuit along an annular path.

Abstract: A torque transducer for mounting a motor includes a mounting flange, a motor flange, a body, and a strain gauge. The mounting flange is configured to secure the torque transducer to a fixed structure. The motor flange is configured to secure to a motor. The body interconnects the mounting and motor flanges. The body defines a channel about a longitudinal axis of the body and is configured to flex in response to the mounting flange and the motor flange rotating relative to one another in response to torque of the motor. The strain gauge is positioned on the body to measure flexation of the body.

Abstract: A torque transducer for mounting a motor includes a mounting flange, a motor flange, a body, and a strain gauge. The mounting flange is configured to secure the torque transducer to a fixed structure. The motor flange is configured to secure to a motor. The body interconnects the mounting and motor flanges. The body defines a channel about a longitudinal axis of the body and is configured to flex in response to the mounting flange and the motor flange rotating relative to one another in response to torque of the motor. The strain gauge is positioned on the body to measure flexation of the body.

Abstract: The present disclosure is directed to an electromechanical surgical system having an end effector and an adapter assembly for selectively interconnecting the end effector and a hand-held surgical instrument. A one-wire bidirectional serial communications interface or bus extends through the end effector, the adapter assembly, and the hand-held surgical instrument. The hand-held surgical instrument includes a master circuit coupled to the bus and configured to identify or control the adapter assembly or the end effector. A power source is couplable to the bus and configured to provide power to the adapter assembly or the end effector. A first switch connects the master circuit to the bus and a second switch connects the power source to the bus. A processor controls operation of the hand-held surgical instrument. The controller has a wake-up pin connected to the bus and is configured to receive a presence pulse from the adapter or end effector.

Abstract: The present disclosure is directed to an electromechanical surgical system having an end effector and an adapter assembly for selectively interconnecting the end effector and a hand-held surgical instrument. A one-wire bidirectional serial communications interface or bus extends through the end effector, the adapter assembly, and the hand-held surgical instrument. The hand-held surgical instrument includes a master circuit coupled to the bus and configured to identify or control the adapter assembly or the end effector. A power source is couplable to the bus and configured to provide power to the adapter assembly or the end effector. A first switch connects the master circuit to the bus and a second switch connects the power source to the bus. A processor controls operation of the hand-held surgical instrument. The controller has a wake-up pin connected to the bus and is configured to receive a presence pulse from the adapter or end effector.

Abstract: A surgical stapler includes a handle assembly, an end effector, a firing rod disposed in mechanical cooperation with the end effector, a drive motor coupled to the firing rod, a sensor, and a controller. The end effector includes a first and second jaw member moveable relative to one another. The first jaw member includes a surgical fastener and the second jaw member includes an anvil. The drive motor is configured to advance the firing rod to cause the first and second jaw members to clamp tissue and to eject a surgical fastener. The surgical stapler includes a sensor that is configured measure a clamping force exerted on tissue by the first and second jaw members. The controller control a speed of the drive motor based on the measured clamping force.

Abstract: The present disclosure is directed to an electromechanical surgical system having an end effector and an adapter assembly for selectively interconnecting the end effector and a hand-held surgical instrument. A one-wire bidirectional serial communications interface or bus extends through the end effector, the adapter assembly, and the hand-held surgical instrument. The hand-held surgical instrument includes a master circuit coupled to the bus and configured to identify or control the adapter assembly or the end effector. A power source is couplable to the bus and configured to provide power to the adapter assembly or the end effector. A first switch connects the master circuit to the bus and a second switch connects the power source to the bus. A processor controls operation of the hand-held surgical instrument. The controller has a wake-up pin connected to the bus and is configured to receive a presence pulse from the adapter or end effector.

Abstract: An end effector includes first and second jaw members moveable relative to one another. Each of the first and second jaw members including a tissue contacting surface opposing the tissue contacting surface of the other jaw member. The end effector includes a detection assembly that is disposed within the first or second jaw member that is configured to detect an attribute of tissue between the first and second jaw members. The detection assembly may include a light source configured to emit light towards tissue between the first and second jaw members or may include an ultrasound transducer configured to emit ultrasound energy towards tissue between the first and second jaw members.

Abstract: A hybrid hydraulic system for a work vehicle is provided that includes a first fixed displacement hydraulic pump whose outlet is connected to a priority valve. The priority valve, in turn, directs the pump's flow to a first group of closed center backhoe valves on a primary circuit and a second group of open center loader valves on a secondary circuit. A second hydraulic pump is provided with independent load sensing capability to supplement fluid flow provided by the first pump.