Patent ID: 7300437
Filing Date: 2007-11-27
Classification: A61B

Abstract:
1. A method for regulating the power supplied to an electronic scalpel having an electrode carried by a manipulator, said scalpel for cutting tissue, and having a rectifying circuit for supplying a rectified and direct voltage, and a radio frequency circuit for producing a current signal with substantially constant frequency feeding said manipulator through a radio frequency transformer, said radio frequency circuit having an electronic switch controlled by a circuit having an oscillator and a wide band pass resonant circuit operating at a resonant frequency, comprising the steps of: generating a wave form having a selected resonant frequency and harmonics of at least first and second orders generated by the wide band pass resonant circuit, the wave form including a distorted sinusoidal voltage due to the presence of the harmonics; applying the wave form to the manipulator for carrying power thereto; and transferring to the tissue the manipulator power, such that, the power of the wave form at the resonant frequency and the harmonics, is substantially equal to the sum of energies required to break bonds of molecules forming the tissue.