Patent ID: 9649149
Date: 2017-05-16
CPC Classifications: A61B,H02M

Claim:
1. A method of providing power to an electrosurgical instrument comprising: generating a non-sinusoidal driving voltage having a substantially constant driving frequency; providing the non-sinusoidal driving voltage to a series LC circuit having a resonant frequency of substantially twice the substantially constant driving frequency and configured to present an impedance that limits current spikes and voltage transient spikes during load fluctuations; at least one of upconverting or downconverting the non-sinusoidal driving voltage; generating a constant power having a quasi-sinusoidal current in the series LC circuit from the non-sinusoidal driving voltage; and providing the constant power having the quasi-sinusoidal current to an electrical output, wherein the electrical output has a maximum threshold voltage of about 75 Volts, and wherein the electrical output is configured for coupling to an electrical input of a bipolar tissue-sealing surgical instrument.