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James H Orszulak: Electrosurgical radio frequency energy transmission medium. Sherwood Services, Covidien, March 20, 2008: US20080071261-A1

A system and method for transmitting electrosurgical energy from a generator to an electrosurgical instrument are provided. The electrosurgical system includes a generator adapted to generate electrosurgical energy for treating tissue. The generator includes one or more active output terminals which ...


62
Robert Wham, Steven P Buysse, James H Orszulak: Vessel sealing system. Mark Farber Esq, US Surgical, May 12, 2005: US20050101951-A1

A method for electrosurgically sealing a tissue includes steps of: (A) applying a first pulse of RF energy to the tissue; and (B) applying at least one subsequent RF energy pulse to the tissue and keeping constant or varying RF energy parameters of individual pulses in accordance with at least one c ...


63
James H Orszulak, James W McPherson: Electrosurgical system employing multiple electrodes and method thereof. United States Surgical, A Division Of Tyco Healthcare Group, April 13, 2006: US20060079886-A1

A system for heat ablation of tissue in a patient comprises a plurality of electrodes operatively connected to a source of radiofrequency energy and configured to apply RF energy to tissue at a patient site, a plurality of RF current restricting circuits, each circuit coupled between one of the plur ...


64
James H Orszulak: Dual Synchro-Resonant Electrosurgical Apparatus With Bi-Directional Magnetic Coupling. Covidien, Tyco Healthcare Group, September 24, 2009: US20090237169-A1

An electrosurgical generator is disclosed. The electrosurgical generator includes a power supply for generating a DC voltage. The electrosurgical generator also includes a first parallel inductor-capacitor circuit being driven by a first signal at a first predetermined frequency and a second paralle ...


65
James H Orszulak: Electrosurgical Radio Frequency Energy Transmission Medium. TYCO Healthcare Group, January 20, 2011: US20110015629-A1

A system and method for transmitting electro surgical energy from a generator to an electrosurgical instrument are provided. The electrosurgical system includes a generator adapted to generate electrosurgical energy for treating tissue. The generator includes one or more active output terminals whic ...


66
Ronald J Podhajsky, James H Orszulak, Behzad Ghorbani Elizeh, David Dumbauld: Surgical Testing Instrument and System. Covidien, Tyco Healthcare Group, February 12, 2009: US20090039900-A1

The present disclosure describes an instrument for measuring the dielectric properties of biological tissue. The instrument includes a top electrode assembly and a bottom electrode assembly, the top electrode assembly including a top electrode and at least one shaft adjustably positionable to move t ...


67
James H Orszulak: Dual Synchro-Resonant Electrosurgical Apparatus with Bi-Directional Magnetic Coupling. Sherwood Services, Tyco Healthcare Group, June 18, 2009: US20090157073-A1

An electrosurgical generator is disclosed. The generator includes an RF output stage configured to generate a sinusoidal waveform for a selected electrosurgical mode. The RF output stage includes first and second connections, the first connection including a first switching component and a first par ...


68
James H Orszulak: Electrosurgical Apparatus With High Speed Energy Recovery. TYCO Healthcare Group, TYCO Healthcare Group, March 11, 2010: US20100063494-A1

A circuit for controlling the discharging of stored energy in an electrosurgical generator includes a pulse modulator which controls an output of a power supply. At least one comparator is configured to provide an error signal to the pulse modulator based on a comparison between an output signal gen ...


69
James H Orszulak: Electrosurgical Apparatus With High Speed Energy Recovery. TYCO Healthcare Group, TYCO Healthcare Group, March 11, 2010: US20100063497-A1

A circuit for controlling the discharging of stored energy in an electrosurgical generator includes a pulse modulator which controls an output of a power supply. At least one comparator is configured to provide an error signal to the pulse modulator based on a comparison between an output signal gen ...


70
James H Orszulak: Electrosurgical Radio Frequency Energy Transmission Medium. October 27, 2011: US20110264088-A1

A system and method for transmitting electrosurgical energy from a generator to an electrosurgical instrument are provided. The electrosurgical system includes a generator adapted to generate electro surgical energy for treating tissue. The generator includes one or more active output terminals whic ...