Appeal No. 98-0194 Page 8
Application No. 08/132,940
Claim 13 recites the same elements as set forth in claim
1 but in addition thereto recites that (1) the clock sets
units of time which are about a millisecond, and (2) the
feedback signal is used to terminate the electrosurgical
generator's supply of energy to the active and return leads by
altering a drive circuit thereof.
Claim 18 recites a method of automatically controlling an
electrosurgical generator in response to the level of tissue
impedance between active and return electrodes of the
electrosurgical generator during tissue desiccation. The
steps recited in claim 18 include, inter alia, (1) using an
electrosurgical generator to supply energy to an active
electrode and a return electrode; (2) setting the amount of
energy desired for electrosurgery on a user control; (3)
sensing the voltage level between the active and return leads;
(4) sensing current flowing through the active or return lead;
(5) calculating power flow with a multiplier receiving the
sensed voltage level and current flow; (6) calculating with an
integrator energy supplied through the leads per unit of time
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