06398779 is referenced by 537 patents.

A method for electrosurgically sealing a tissue includes steps of: (A) applying an initial pulse of RF energy to the tissue, the pulse having characteristics selected so as not to appreciably heat the tissue; (B) measuring a value of an impedance of the tissue in response to the applied pulse; (C) in accordance with the measured impedance value, determining an initial set of pulse parameters for use during a first RF energy pulse that is applied to the tissue; and (D) varying the pulse parameters of individual ones of subsequent RF energy pulses in accordance with at least one characteristic of an electrical transient that occurs during subsequent RF energy pulses. The method terminates the generation of subsequent RF energy pulses upon a determination that the electrical transient is absent or that a minimum output voltage has been reached.

Title
Vessel sealing system
Application Number
9/408944
Publication Number
6398779 (B1)
Application Date
September 30, 1999
Publication Date
June 4, 2002
Inventor
Robert H Wham
Boulder
CO, US
James H Orszulak
Nederland
CO, US
Steven P Buysse
Longmont
CO, US
Assignee
Sherwood Services
US
IPC
A61B 18/18
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