A method of creating a mechanical force switch to be disposed along a longitudinal axis of a medical device, comprising providing a hollow body (30) defining a body interior cavity (32, 34), moveably disposing a switching piston (10) along the longitudinal device axis in the body interior cavity to define a switch-making piston position or a switch-breaking piston position, coupling an electrically-conductive contact (80, 160) to the switching piston such that it is moveable between the two piston positions to define a switch-making state, and imparting a variable longitudinal bias to the switching piston at a bias-device contact with a bias device (50) to retain the switching piston in the switch-making piston position and the switch-breaking piston position, respectively, until an external force imparted to the switching piston exceeds the longitudinal bias.
