Method and system for compensating for external impedance of an energy carrying component when controlling an electrosurgical generator

A control system for use with an electrosurgical generator that delivers electrosurgical energy to tissue, the control system comprising:

• a control module including at least one processor, said at least one processor executing an algorithm comprising the steps of:
• determining a sensed voltage value corresponding to a sensed voltage signal output by the electrosurgical generator;
• determining a sensed current value corresponding to a sensed current signal output by the electrosurgical generator;
• determining impedance information corresponding to impedance of at least one energy-carrying component;
• and
• determining a characteristic related to the electrosurgical energy delivered to the patient using the impedance information, the sensed voltage and the sensed current.

An electrosurgical generator comprising:

• a control system including:
• a control module including at least one processor, said at least one processor executing an algorithm comprising the steps of:
• determining at least one of a sensed voltage value corresponding to a sensed voltage signal output by the electrosurgical generator;
• determining a sensed current value corresponding to a sensed current signal output by the electrosurgical generator;
• determining a phase shift value corresponding to a phase shift between the voltage and current signals;
• determining a characteristic related to the electrosurgical energy delivered to the patient using the phase shift value, the sensed voltage and the sensed current;
• and modulating the electrosurgical energy based in part on the characteristic.

A method for regulating electrosurgical energy output by an electrosurgical generator, the method comprising the steps of:

• determining a sensed voltage value corresponding to a sensed voltage signal output by the electrosurgical generator;
• determining a sensed current value corresponding to a sensed current signal output by the electrosurgical generator;
• determining a phase shift value corresponding to a phase shift between the voltage signal and a current signal;
• determining a characteristic related to the electrosurgical energy delivered to the tissue using the phase shift value, the sensed voltage value and the sensed current value;
• and
• determining at least one of voltage, current and power output by the electrosurgical generator in accordance with the determined characteristic related to the delivered electrosurgical energy.

A method for compensating an output of an electrosurgical system for an external device of an electrosurgical system comprising the steps of:

• determining an impedance factor of the external device utilizing a first algorithm;
• determining a voltage factor adjacent an electrode utilizing a second algorithm;
• determining a current factor adjacent said electrode utilizing a third algorithm;
• determining a phase parameter factor of the output utilizing a fourth algorithm;
• determining at least one of the power, current, and voltage lost in the external device using at least one of the impedance factor, the voltage factor, the current factor, and the phase parameter factor to obtain a difference value;
• comparing the difference value to a threshold value related to the external device;
• and
• modulating at least one of the power, the load, and the current, the modulation of the at least one of the power, the load, and the current being dependent on the relationship of the difference value to the threshold value.

An electrosurgical system comprising:

• an electrosurgical generator configured to deliver energy;
• an electrosurgical treatment tool adapted to connect to the generator, said electrosurgical treatment tool including at least one electrode, and an impedance sensor;
• a current sensor configured to measure the output current delivered by the generator, said electrosurgical generator including:
• a microprocessor electrically connected to the current sensor and the impedance sensor that calculates one or more parameters of an electrosurgical energy;
• said electrode of said treatment tool including a conduit defined therein for transmitting electrosurgical energy therethrough, said conduit including:
• an encoded rating capable of being communicated to an input of the electrosurgical generator, said encoded rating relating to a loss of energy from the conduit;
• and wherein the electrosurgical generator outputs a compensated signal attributable to the energy loss from the conduit.