Appeal No. 98-0194 Page 9
Application No. 08/132,940
utilizing the calculated power flow and a clock which
establishes the units of time;
(7) providing a correlation circuit to generate a feedback
signal when the amount of energy calculated equals the user
control setting (from step (2)); and (8) altering the supply
of energy to the active and return leads in accord with the
feedback signal.
Bowers discloses an electrosurgical generator with a
high-frequency pulse width modulated feedback power control.
As shown in Figure 1, the electrosurgical generator 10
includes
a control panel 12 having the typical switches and other
control devices for controlling the mode of operation of the
generator 10 and the amount of power to be delivered in each
mode and may include means for adjusting the blend or relative
amounts of cutting and hemostasis which occurs during the
cutting with hemostasis mode of operation. A power output
control signal 18 is supplied from the control panel 12 to
control and generally limit the DC power output 20 from the
supply 16 according
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Last modified: November 3, 2007