08591506 is referenced by 101 patents and cites 1669 patents.

An electrosurgical system is disclosed. The electrosurgical system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue. The electrosurgical generator includes impedance sensing circuitry which measures impedance of tissue, a microprocessor configured to determine whether a tissue reaction has occurred as a function of a minimum impedance value and a predetermined rise in impedance, wherein tissue reaction corresponds to a boiling point of tissue fluid, and an electrosurgical instrument including at least one active electrode adapted to apply electrosurgical energy to tissue.

Title
Vessel sealing system
Application Number
13/652932
Publication Number
8591506 (B2)
Application Date
October 16, 2012
Publication Date
November 26, 2013
Inventor
James H Orszulak
Nederland
CO, US
Steven P Buysse
Niwot
CO, US
Robert H Wham
Boulder
CO, US
Assignee
Covidien
CH
IPC
A61B 18/14
View Original Source