Method of switching a cordless hand-held ultrasonic cautery cutting device

A method for operating a surgical device, comprising:

• providing
• a control circuit operable to carry out at least two operational conditions of the surgical device;
• and
• effecting the at least two operational conditions with a two-stage switch electrically connected to the control circuit, a first stage of the switch effecting a first of the at least two operational conditions and a second stage of the switch effecting a second of the at least two operational conditions different from the first operational condition, the two-stage switch having a variable resistance such that:
• the first stage occurs when a first depression force is applied to the switch;
• the second stage occurs when a second depression force greater than the first depression force is applied to the switch;
• and
• a holding force lower than at least the second depression force is required to maintain the switch in the second stage.