A surgical instrument includes a drive member movable by a drive motor between a home position and an end of stroke. A mechanical stop is disposed at or near the end of stroke and is structured to increase resistance to movement of the drive member from a first position to a second position. A control system detects a current spike associated with the increased resistance and interrupts power to the drive motor.

A method for determining motional branch current in an ultrasonic transducer of an ultrasonic surgical device over multiple frequencies of a transducer drive signal. The method may comprise, at each of a plurality of frequencies of the transducer drive signal, oversampling a current and voltage of the transducer drive signal, receiving, by a processor, the current and voltage samples, and determining, by the processor, the motional branch current based on the current and voltage samples, a static capacitance of the ultrasonic transducer and the frequency of the transducer drive signal.

A surgical system and a method of operating a surgical system are disclosed herein. The surgical system comprises a surgical console, a control device, and a dongle. The surgical console operates a surgical device and comprises a connection port. The control device communicates with the surgical console to remotely control the surgical device. The dongle physically couples to the connection port of the surgical console. The control device comprises a first communication device and a radio frequency (RF) reader, and the dongle comprises a second communication device and a passive RF device. The RF reader receives the pairing information from the passive RF device in response to the passive RF device being with a threshold proximity of the RF reader. The first and second communication devices wirelessly connect based on the pairing information, enabling the control device to wirelessly communicate with the surgical console to remotely control the surgical device.

A surgical instrument including a housing, an endoscopic portion, a shaft portion and an end effector is disclosed. The endoscopic portion extends distally from the housing and defines a longitudinal axis. The shaft portion is selectively connectable to a distal end of the endoscopic portion. The end effector is selectively connectable to a distal end of the shaft portion.

A surgical device drive system comprising a gear coupled to a drive train is disclosed. The gear is configured to transmit a proximal retraction motion to a drive member. The surgical device drive system further comprises a control system coupled to the gear, and a manual input device comprising an input component and a ratchet mechanism. The input component is selectively coupled to the gear by the ratchet mechanism. The drive train is operable in a distal advancement direction and in a proximal retraction direction. In a first state, the control system is configured to drive the gear and the drive train in the distal advancement direction and the proximal retraction direction. In a second state, the manual input device is configured to drive the gear and the drive train in the proximal retraction direction, but not the distal advancement direction, using the ratchet mechanism.

A surgical system includes a power source, a handle housing, a motor, an adapter assembly, an end effector, and a correction unit. The motor is disposed within the handle housing and is in electrical communication with the power source. The adapter assembly is operably coupled to the handle housing and supports an input and an output shaft coupled by the universal joint. The input shaft is in mechanical communication with the motor. The end effector is coupled to the adapter assembly and is selectively articulatable relative to the adapter assembly. The correction unit is in electrical communication with the power source and the motor and is configured to adjust the input shaft speed of the input shaft to maintain a substantially constant output shaft speed of the output shaft as the end effector articulates relative to the adapter assembly.

A surgical robotic system includes a control tower having a first connector coupled to a first controller; and a movable robotic arm cart having a robotic arm and a second connector coupled to a second controller, the second connector being configured to couple to the first connector through a cable. The second controller being configured to transmit an identification signal having identification information of the movable robotic arm cart to the first controller to initialize the movable robotic arm cart for operation with the control tower.

A surgical stapling assembly is disclosed that comprises a retainer that is configured to be removably mounted to a staple cartridge that is configured to be operably seated in a stapling device. The retainer comprises an authentication key that is configured to defeat a first firing member lockout provided the stapling device. The stapling device further comprises a second lockout that is configured to prevent the firing member of the device from advancing through a staple firing stroke when a spent staple cartridge is seated in said stapling device.

A retainer for use with a staple cartridge that is configured for use with a surgical stapling device is disclosed. The retainer comprises a retainer body that is configured to be received on the staple cartridge. A plurality of retention features protrude from the retainer body for releasable engagement with the staple cartridge to form a cartridge assembly. The retainer further comprises an authentication key that is configured to defeat a lockout in the surgical stapling device when the cartridge assembly is seated therein. At least one of the retention features is configured to be removed from the retainer body after the retainer has been removed from the staple cartridge.

An energy module is disclosed. The energy module includes a control circuit and a two wire interface coupled to the control circuit. The two wire interface is configured as a power source and as a communication interface between the energy module and a neutral electrode.