Electrosurgical system
First Claim
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1. An electrosurgical system for performing surgical procedures on body tissue of a patient comprising:
- an electrosurgical generator; and
an electrosurgical tool comprising a memory module storing tool data; and
wherein the electrosurgical generator is configured to receive the tool data from the memory module and apply an electrosurgical signal profile to the electrosurgical tool based on the tool data and comprises a RF amplifier circuit configured to supply radiofrequency energy to the electrosurgical tool and a relay circuit configured to measure tool impedance before radiofrequency energy is supplied by the RF amplifier circuit;
wherein the electrosurgical tool comprises pivotably connected jaws arranged to compress tissue therebetween with at least one jaw having at least two electrodes configurable to operate in a coagulation state and a cutting state and the tool data comprises electrode configuration data indicating which of the at least two electrodes are used in the coagulation state and reconfiguring the at least two electrodes to be used in the cutting state.
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Abstract
An electrosurgical system can include an electrosurgical generator, a feedback circuit or controller, and an electrosurgical tool. The feedback circuit can provide an electrosurgery endpoint by determining the phase end point of a tissue to be treated. The electrosurgical system can include more than one electrosurgical tool for different electrosurgical operations and can include a variety of user interface features and audio/visual performance indicators. The electrosurgical system can also power conventional bipolar electrosurgical tools and direct current surgical appliances.
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Citations
29 Claims
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1. An electrosurgical system for performing surgical procedures on body tissue of a patient comprising:
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an electrosurgical generator; and an electrosurgical tool comprising a memory module storing tool data; and wherein the electrosurgical generator is configured to receive the tool data from the memory module and apply an electrosurgical signal profile to the electrosurgical tool based on the tool data and comprises a RF amplifier circuit configured to supply radiofrequency energy to the electrosurgical tool and a relay circuit configured to measure tool impedance before radiofrequency energy is supplied by the RF amplifier circuit; wherein the electrosurgical tool comprises pivotably connected jaws arranged to compress tissue therebetween with at least one jaw having at least two electrodes configurable to operate in a coagulation state and a cutting state and the tool data comprises electrode configuration data indicating which of the at least two electrodes are used in the coagulation state and reconfiguring the at least two electrodes to be used in the cutting state. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. An electrosurgical generator for performing surgical procedures on body tissue of a patient comprising:
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a power supply; a signal generation module electrically coupled to the power supply, the signal generation module configured to generate a radiofrequency signal; a first tool port configured to interface with an electrosurgical tool having tool data stored therein;
the first tool port adapted to receive the tool data stored on the electrosurgical tool and to supply the radiofrequency signal from the signal generation module to the tool;a power port adapted to couple the generator to a direct current device and to supply direct current voltage to the direct current device, the power port having a micro switch that when activated causes a tool interface circuit to update a user interface display indicating that a direct current device has been coupled to the generator and status of the direct current device; and a microcontroller configured to monitor the phase angle between a voltage and a current of the radiofrequency signal by continuously supplying a measurement signal having a frequency different form the radiofrequency signal and to determine an electrosurgical procedure endpoint indicating fusion of tissue in contact with the electrosurgical tool based on the monitored phase angle, the microcontroller disrupting the supply of the radiofrequency signal and the measurement signal when the monitored phase angle equals or exceeds the electrosurgical procedure endpoint indicating fusion of the tissue. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29)
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Specification