PULSE GENERATING CIRCUIT, AND ELECTROSURGICAL GENERATOR INCORPORATING THE SAME

The present invention relates to a pulse generating circuit for an electrosurgical generator, for generating a waveform suitable for causing electroporation of biological tissue. The pulse generating circuit comprises a voltage source connectable to a load via a switching element, and an open circui...

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Bibliographic Details
Main Authors HANCOCK, Christopher Paul, DAVIES, Ilan, HODGKINS, George
Format Patent
LanguageEnglish
Published 05.01.2023
Subjects
BASIC ELECTRONIC CIRCUITRY
DIAGNOSIS
ELECTRICITY
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MEDICAL OR VETERINARY SCIENCE
PULSE TECHNIQUE
SURGERY
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Summary:The present invention relates to a pulse generating circuit for an electrosurgical generator, for generating a waveform suitable for causing electroporation of biological tissue. The pulse generating circuit comprises a voltage source connectable to a load via a switching element, and an open circuit coaxial transmission line connected between the switching element and the voltage source to be charged by the voltage source when the switching element is in an OFF state and to be discharged when the switching element is in an ON state. The switching element comprises a plurality of series connected avalanche transistors, and a trigger pulse generator configured to generate a trigger pulse to activate the plurality of series connected avalanche transistors. Furthermore, the impedance of the coaxial transmission line is configured to match a sum of (i) the impedance the plurality of series connected avalanche transistors, and (ii) the impedance of the load.
Bibliography:Application Number: US202017781505