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Inventor:
McPherson; James W.
Address:
Boulder, CO
No. of patents:
16
Patents:












Patent Number Title Of Patent Date Issued
8231616 Transformer for RF voltage sensing July 31, 2012
An electrosurgical system is disclosed. The electrosurgical system includes a multiple-secondary transformer configured for sensing voltage. The multiple-secondary transformer includes a primary winding coupled to an active terminal and a return terminal of the electrosurgical system
8216222 Temperature sensing return electrode pad July 10, 2012
An electrosurgical return electrode is disclosed. The return electrode includes a conductive pad having one or more temperature monitoring zones and a patient-contacting surface configured to conduct electrosurgical energy and a temperature sensing circuit coupled to the conductive pad.
8182477 Electrosurgical system employing multiple electrodes and method thereof May 22, 2012
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
8113057 Switched resonant ultrasonic power amplifier system February 14, 2012
A switched resonant power amplifier system for ultrasonic transducers is disclosed. The system includes an amplifier that receives and processes a driver output signal for generating a drive signal that is provided to an ultrasonic device for controlling output of the ultrasonic device.
8096961 Switched resonant ultrasonic power amplifier system January 17, 2012
A switched resonant power amplifier system for ultrasonic transducers is disclosed. The system includes an amplifier that receives and processes a driver output signal for generating a drive signal that is provided to an ultrasonic device for controlling output of the ultrasonic device.
8062291 Smart return electrode pad November 22, 2011
An electrosurgical return electrode is disclosed. The return electrode includes a return electrode pad having a patient-contacting surface configured to conduct electrosurgical energy and a sensor circuit coupled to the return electrode pad. The sensor circuit is configured to monitor
8062290 Electrosurgical system employing multiple electrodes November 22, 2011
A system for heat ablation of tissue in which energy is sequentially applied to at least two electrodes inserted into tissue, the system comprising a radiofrequency source configured to supply radiofrequency energy to two or more electrodes, at least one return electrode for returnin
7927329 Temperature sensing return electrode pad April 19, 2011
An electrosurgical return electrode is disclosed. The return electrode includes a conductive pad having one or more temperature monitoring zones and a patient-contacting surface configured to conduct electrosurgical energy and a temperature sensing circuit coupled to the conductive pad.
7794457 Transformer for RF voltage sensing September 14, 2010
An electrosurgical system is disclosed. The electrosurgical system includes a multiple-secondary transformer configured for sensing voltage. The multiple-secondary transformer includes a primary winding coupled to an active terminal and a return terminal of the electrosurgical system
7736359 RF return pad current detection system June 15, 2010
The present disclosure provides an electrosurgical return pad current detection system for use in monopolar surgery as well as a method of using the same. The detection system comprises a plurality of conductive pads which include a plurality of conductive elements. The detection sys
7722603 Smart return electrode pad May 25, 2010
An electrosurgical return electrode is disclosed. The return electrode includes a return electrode pad having a patient-contacting surface configured to conduct electrosurgical energy and a sensor circuit coupled to the return electrode pad. The sensor circuit is configured to monitor
7699842 Electrosurgical system employing multiple electrodes and method thereof April 20, 2010
A system and method for heat ablation of tissue in which energy is sequentially applied to at least two electrodes inserted into tissue. The system is comprised of a radiofrequency (RF) source for supplying RF energy, at least two electrodes configured to apply RF energy to tissue, a
7648499 System and method for generating radio frequency energy January 19, 2010
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 se
7553309 Electrosurgical system employing multiple electrodes and method thereof June 30, 2009
A system and method for heat ablation of tissue in which energy is sequentially applied to at least two electrodes inserted into tissue. The system is comprised of a radiofrequency (RF) source for supplying RF energy, at least two electrodes configured to apply RF energy to tissue, a
7396336 Switched resonant ultrasonic power amplifier system July 8, 2008
A switched resonant power amplifier system for ultrasonic transducers is disclosed. The system includes an amplifier that receives and processes a driver output signal for generating a drive signal that is provided to an ultrasonic device for controlling output of the ultrasonic device.
7282049 Electrosurgical system employing multiple electrodes and method thereof October 16, 2007
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










 
 
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