Arc based adaptive control system for an electrosurgical unit
First Claim
1. A method for controlling an electrosurgical generator, the method comprising the steps of:
- measuring impedance to obtain at least one measured impedance signal;
filtering the at least one measured impedance signal through a high pass filter to obtain an absolute value thereof; and
filtering the absolute value of the at least one measured impedance signal through a low pass filter to obtain at least one arc detection signal; and
adjusting output of the electrosurgical generator based on the at least one arc detection signal.
5 Assignments
0 Petitions
Accused Products
Abstract
A system and method for performing electrosurgical procedures are disclosed. The system includes an electrosurgical generator adapted to supply electrosurgical energy to tissue in form of one or more electrosurgical waveforms having a crest factor and a duty cycle. The system also includes sensor circuitry adapted to measure impedance and to obtain one or more measured impedance signals. The sensor circuitry is further adapted to generate one or more arc detection signals upon detecting an arcing condition§. The system further includes a controller adapted to generate one or more target control signals as a function of the measured impedance signals and to adjust output of the electrosurgical generator based on the arc detection signal. An electrosurgical instrument is also included having one or more active electrodes adapted to apply electrosurgical energy to tissue.
799 Citations
16 Claims
-
1. A method for controlling an electrosurgical generator, the method comprising the steps of:
-
measuring impedance to obtain at least one measured impedance signal; filtering the at least one measured impedance signal through a high pass filter to obtain an absolute value thereof; and filtering the absolute value of the at least one measured impedance signal through a low pass filter to obtain at least one arc detection signal; and adjusting output of the electrosurgical generator based on the at least one arc detection signal. - View Dependent Claims (2, 3, 4)
-
-
5. An electrosurgical generator:
-
sensor circuitry configured to measure impedance and to obtain at least one measured impedance signal; a high pass filter configured to filter the at least one measured impedance signal to obtain an absolute value thereof; a low pass filter configured to filter the absolute value of the at least one measured impedance signal to obtain the at least one arc detection signal; and a controller configured to adjust output of the electrosurgical generator based on the at least one arc detection signal. - View Dependent Claims (6, 7, 8, 9, 10)
-
-
11. An electrosurgical system comprising:
-
an electrosurgical generator configured to supply electrosurgical energy to tissue; sensor circuitry configured to measure impedance and to obtain at least one measured impedance signal; a high pass filter configured to filter the at least one measured impedance signal to obtain an absolute value thereof; a low pass filter configured to filter the absolute value of the at least one measured impedance signal to obtain at least one arc detection signal; a controller configured to adjust output of the electrosurgical generator based on the at least one arc detection signal; and an electrosurgical instrument including at least one active electrode configured to apply electrosurgical energy to tissue. - View Dependent Claims (12, 13, 14, 15, 16)
-
Specification