Method for usage of the shroud as an aspect of sensing or controlling a powered surgical device, and a control algorithm to adjust its default operation

A method for controlling a surgical instrument, comprising:

• operating, with a motor control circuit, an electric motor;
• sensing, with a strain gauge, strain experienced by the surgical instrument;
• communicating, from the strain gauge, the sensed strain to the motor control circuit;
• sensing, with a force sensor, a force experienced by the surgical instrument;
• communicating, from the force sensor, the sensed force to the motor control circuit;
• and
• changing, with the motor control circuit, the speed of the electric motor based on the sensed strain and the sensed force.

A method for controlling a surgical instrument, comprising:

• operating, with a motor control circuit, an electric motor;
• sensing, with a first strain gauge, a first strain experienced by the surgical instrument along a first axis;
• communicating, from the first strain gauge, the sensed first strain to the motor control circuit;
• sensing, with a second strain gauge, a second strain experienced by the surgical instrument along a second axis that is transverse to the first axis;
• communicating, from the second strain gauge, the sensed second strain to the motor control circuit;
• and
• changing, with the motor control circuit, the speed of the electric motor based on the sensed first strain and the second strain.