Electrosurgical generator apparatus

US7846156B2 · kind B2 · utility

Assignee

• Synergetics USA, Inc. · US

Inventors

• Jerry L. Malis · King of Prussia, US
• Leonard L. Malis · Queens, US
• Robert R. Acorcey · Cherry Hill, US
• David L. Solt · Fort Washington, US
• Anthony John Groch · Mantua, US

Key dates

• Filing date: Apr 5, 2006
• Grant date: Dec 7, 2010
• Expiry date: Oct 7, 2029

Classification

• Technology area (CPC A): Human Necessities
• CPC primary: A61B2018/00875
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An electrosurgical generator apparatus controls a variable output signal to electrodes. The generator apparatus operates in a cut mode, a coagulation mode or a stimulate mode. The generator apparatus comprises a DC power supply that provides regulated low voltage and high voltage outputs and a radio frequency (RF) waveform generator circuit that provides pulse duration modulation (PDM) of a carrier signal. The carrier signal directly affects the variable output signal to the electrodes. A control circuit controls a variable output signal to electrodes used in electrosurgical procedures. The control circuit comprises a DC power supply circuit that provides regulated low voltage and high voltage outputs and an RF waveform generator circuit that provides pulse duration modulation of a carrier signal. The carrier signal directly affects the variable output signal to the electrodes.