Vessel sealing system
AssigneeSherwood Services AG
InventorsRobert H. Wham, Steven P. Buysse, James H. Orszulak
Life of this patent
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Abstract
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 of subsequent RF energy pulses in accordance with at least one characteristic of an electrical transient that occurs during the individual RF energy pulses. The method terminates the generation of the at least one subsequent RF pulse upon a determination that the electrical transient is absent.
Claims15
A method for electrosurgically sealing tissue comprising the steps of:
- providing an electrosurgical generator including an RF energy source and a controller that controls the operation of the electrosurgical generator, the electrosurgical generator having an output which couples to at least one electrode of a surgical instrument;
- instructing the controller to activate the electrosurgical generator to generate an initial pulse of RF energy to tissue to measure a value of an electrical characteristic of the tissue in response to the applied initial pulse;
- determining an initial set of pulse parameters for at least one subsequent pulse based on the initial pulse of RF energy to tissue;
- and
- controlling the pulse parameters of individual pulses of further subsequent RF energy pulses in accordance with a change in the electrical characteristics of the tissue as determined from at least one characteristic of an electrical transient that occurs during at least one RF energy pulse.
Dependencies are inferred from the claim text.