Method and system for controlling an output of a radio-frequency medical generator having an impedance based control algorithm
First Claim
1. A method for controlling a surgical energy supplied to tissue using a surgical instrument, the method comprising:
- applying a low power pulse of energy to tissue;
determining tissue impedance based on a reaction of the tissue to the low power pulse;
determining an initial set of parameters based on the tissue impedance;
applying a pulse of energy to the tissue according to the initial set of parameters;
measuring a transient pulse width of the pulse of energy; and
determining whether an amplitude of the pulse of energy is less than an ending amplitude.
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Accused Products
Abstract
A system for performing an electrosurgical procedure at a surgical site is disclosed. The system includes a sensor configured to continually sense an electrical and/or a physical property of tissue at a surgical site and to generate a sensor signal as a function thereof. The system also includes a control module configured to process the sensor signal using a processor, an algorithm, and a map having one or more predetermined values. The control module is further configured to compare the sensor signal to a predetermined level to determine reliability of the sensor signal and to signal an electrosurgical generator in response to a reliable sensor signal such that the electrosurgical generator enters energy control mode, wherein the electrosurgical generator matches an output of the control signal with a predetermined value from the map.
955 Citations
14 Claims
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1. A method for controlling a surgical energy supplied to tissue using a surgical instrument, the method comprising:
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applying a low power pulse of energy to tissue; determining tissue impedance based on a reaction of the tissue to the low power pulse; determining an initial set of parameters based on the tissue impedance; applying a pulse of energy to the tissue according to the initial set of parameters; measuring a transient pulse width of the pulse of energy; and determining whether an amplitude of the pulse of energy is less than an ending amplitude. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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Specification