Methods and devices for controlling motorized surgical devices

A surgical device, comprising:

• a motor;
• an elongate shaft having first and second jaws at a distal end thereof, the first and second jaws being configured to engage tissue therebetween;
• a compression member configured to translate relative to the first and second jaws;
• an actuator configured to have pressure applied thereto by a user and thereby cause the motor to provide power that causes the compression member to translate along the first and second jaws;
• a sensor configured to sense an amount of the pressure applied to the actuator;
• and
• a controller configured to receive a signal from the sensor indicative of the sensed amount of pressure, and the controller being configured to use the signal to control the power provided by the motor that causes the translation of the compression member along the first and second jaws;
• wherein when the sensed amount of pressure is within a first range of pressure the controller is configured to control the power provided by the motor such that the compression member translates proximally along the first and second jaws;
• and
• wherein when the sensed amount of pressure is within a second range of pressure that is greater than the first range of pressure the controller is configured to control the power provided by the motor such that the compression member translates distally along the first and second jaws.

A surgical method, comprising:

• engaging a tissue with first and second jaws of a surgical device;
• sensing with a sensor an amount of pressure applied to an actuator of the surgical device;
• and
• causing a motor to provide power that causes at least one of the first and second jaws to move, the sensed amount of the pressure defining an amount of the power provided by the motor, and the sensed amount of pressure applied defining a drive direction of the motor;
• wherein the sensed amount of pressure being in a first range of pressure defines a first amount of rower provided by the motor and defines a first drive direction of the motor, and the sensed amount of pressure being in a second range of pressure that is greater than the first range of pressure defines a second amount of power provided by the motor that is greater than the first amount of power and defines a second drive direction of the motor that is opposite to the first direction.