Devices and methods are provided for facilitating closing and clamping of an end effector of a surgical device. In general, the devices and methods can be configured to increase a moment arm of the end effector, thereby increasing a closure force of the end effector. In an exemplary embodiment, a surgical device can include a closure mechanism configured to provide an increased moment arm at the device's end effector, such as at a proximal end thereof.

An electromechanical surgical device includes a motor system configured to drive drive-shafts and a steering cable arrangement. A control system may be provided for controlling the motor system. A remote control unit may also be provided for controlling the motor system via the control system. Optical or Hall-effect devices, may be provided for determining the position of the elements of the surgical instrument based on the detected rotation of the drive-shafts. A memory unit stores a plurality of operating programs or algorithms, each corresponding to a type of surgical instrument attachable to the electro-mechanical surgical device. The control system reads or selects from the plurality of operating programs or algorithms, the operating program or algorithm corresponding to the type of surgical instrument attached to the electromechanical surgical device.

A surgical device is provided that includes a tool assembly having an anvil assembly and a cartridge assembly configured to grasp tissue therebetween, the cartridge assembly including a plurality of surgical fasteners. A motor is configured to fire one or more surgical fasteners. A sensor determines a first parameter of the tool assembly and a control system adjusts a second parameter of the motor used to fire the one or more surgical fasteners based on the first parameter detected by the sensor.

An adapter assembly includes a switch actuator, an actuation bar, and a latch. The switch actuator is movable between a proximal position, in which the switch actuator actuates a switch, and a distal position. The latch is movable between a first position, in which the latch permits proximal movement of the switch actuator, and a second position, in which the latch prevents proximal movement of the switch actuator. The latch is configured to move from the first position toward the second position in response to the actuation bar moving toward a proximal position.

A surgical instrument. The surgical instrument includes an elongated channel, an anvil pivotably connected to the elongated channel, a closure member mechanically coupled to the anvil, an electric motor mechanically coupled to the closure member, a motor controller electrically coupled to the electric motor and a control circuit electrically connected to the motor controller. The control circuit is configured to monitor a first predefined event, monitor a second predefined event, provide a stop signal to the motor controller to stop a closing motion of at least one of the elongated channel and the anvil after an occurrence of the first predefined event, and provide a start signal to the motor controller to start the closing motion of the at least one of the elongated channel and the anvil after an occurrence of a second predefined event.

A surgical instrument. The surgical instrument includes an elongated channel configured to support a staple cartridge, an anvil pivotably connected to the elongated channel, a knife mechanically coupled to the staple cartridge, an electric motor and a control circuit electrically connected to the electric motor. The control circuit is configured to change a firing motion of the surgical instrument based on a combination of events.

Various examples are directed to systems and methods for operating and controlling a modular surgical instrument comprising an operating mode. A controller may receive electrical signal associated with an activation of at least one user-actuated input device electrically coupled to the controller and override the operating mode of the surgical instrument upon receiving the electrical signal.

A surgical instrument is disclosed herein. The surgical instrument can include an end effector that includes jaws configured to transition between an opened condition and a closed condition, a plurality of electrodes positioned within the jaws of the end effector, a control circuit, and a memory configured to store an algorithm configured to cause the control circuit to determine an impedance signal based on signals received from the plurality of electrodes, detect a media positioned between the jaws of the end effector based on the determined impedance signal, determine a position of the detected media based on the received signals, and generate an alert associated with the detected media and the determined position.

A surgical instrument system comprising a completely replaceable cartridge jaw is disclosed.

A surgical instrument comprising a handle and a rotatable shaft is disclosed. The handle comprises a rotatable actuator configured to rotate the shaft. In various instances, the rotatable actuator is mounted to the handle in proximity to a grip of the handle so that a clinician can easily rotate the actuator while holding the handle. The direction in which the actuator is rotated corresponds to the direction in which the shaft is rotated.