1
David S Keppel: Circuit for controlling arc energy from an electrosurgical generator. Sherwood Services, May 16, 2006: US07044948 (239 worldwide citation)

A circuit is disclosed which minimizes the amount of tissue vaporized during a first half (positive half cycle) of an electrosurgical current cycle and minimizes the amount of current applied to tissue during a second half (negative half cycle) of the electrosurgical current cycle to control thermal ...


2
David S Keppel: Electrosurgical electrode having a non-conductive porous ceramic coating. Sherwood Services, May 29, 2007: US07223265 (190 worldwide citation)

An electrosurgical electrode assembly and method utilizing the same are disclosed capable of controlling or limiting the current per arc in real-time during an electrosurgical procedure. The conductive electrosurgical electrode is configured for being connected to an electrosurgical generator system ...


3
David S Keppel: Electrosurgical electrode having a non-conductive porous ceramic coating. Sherwood Services, April 25, 2006: US07033354 (187 worldwide citation)

An electrosurgical electrode and electrosurgical generator system utilizing the same are disclosed capable of controlling or limiting the current per arc in real-time during an electrosurgical procedure. The conductive electrosurgical electrode is configured for being connected to an electrosurgical ...


4
David S Keppel: Electrosurgical electrode having a non-conductive porous ceramic coating. Covidien, December 2, 2008: US07458972 (137 worldwide citation)

An electrosurgical electrode assembly and method utilizing the same are disclosed capable of controlling or limiting the current per arc in real-time during an electrosurgical procedure. The conductive electrosurgical electrode is configured for being connected to an electrosurgical generator system ...


5
David S Keppel: Variable output crest factor electrosurgical generator. Sherwood Services, August 14, 2007: US07255694 (78 worldwide citation)

An electrosurgical generator is disclosed capable of controlling the output crest factor, as well as the output power of the electrosurgical generator across a range of tissue impedances during electrosurgery. The control occurs automatically, in real time and continuously during the duration of ele ...


6
David S Keppel: Circuit for controlling arc energy from an electrosurgical generator. Covidien, November 2, 2010: US07824400 (14 worldwide citation)

A circuit is disclosed which minimizes the amount of tissue vaporized during a first half (positive half cycle) of an electrosurgical current cycle and minimizes the amount of current applied to tissue during a second half (negative half cycle) of the electrosurgical current cycle to control thermal ...


7
David S Keppel: Polarity control of electrosurgical generator. Covidien, January 28, 2014: US08636730 (7 worldwide citation)

A method for controlling an electrosurgical generator is contemplated by the present disclosure. The method includes applying an electrosurgical waveform to tissue through an electrode. The electrosurgical waveform includes one or more positive half-cycles one or more negative half-cycles. The metho ...


8
Steven P Buysse, Bret S Felton, David N Heard, David S Keppel, Ronald J Podhajsky, Dale F Schmaltz, Robert H Wham, Edward C Meagher, Kate R Lawes, David A Schechter, Chelsea Shields, Philip M Tetzlaff, Jeremy S James: Method and system for controlling output of RF medical generator. Covidien, August 25, 2015: US09113900 (4 worldwide citation)

A system for monitoring and/or controlling tissue modification during an electrosurgical procedure is disclosed. The system includes a sensor module and a control module operatively coupled to the sensor module and configured to control the delivery of electrosurgical energy to tissue based on infor ...


9
David S Keppel: Circuit for controlling arc energy from an electrosurgical generator. Covidien, September 3, 2013: US08523855 (3 worldwide citation)

A circuit is disclosed which minimizes the amount of tissue vaporized during a first half (positive half cycle) of an electrosurgical current cycle and minimizes the amount of current applied to tissue during a second half (negative half cycle) of the electrosurgical current cycle to control thermal ...


10
David S Keppel: Circuit for controlling arc energy from an electrosurgical generator. United States Surgical a division of, November 18, 2004: US20040230189-A1

A circuit is disclosed which minimizes the amount of tissue vaporized during a first half (positive half cycle) of an electrosurgical current cycle and minimizes the amount of current applied to tissue during a second half (negative half cycle) of the electrosurgical current cycle to control thermal ...