Method and system for controlling output of RF medical generator
First Claim
1. An electrosurgical generator configured to generate electrosurgical energy delivered to a patient for performing an electrosurgical procedure for sealing tissue, the generator comprising:
- at least one sensor configured to sense at least one of a physical and electrical property related to the delivery of the electrosurgical energy;
at least one processor configured to receive sensed data corresponding to the at least one of the physical and electrical property and to process at least a portion of said received sensed data to control the electrosurgical generator, the at least one processor further configured to continuously compare the received sensed data to a mapping having a time-based plot of desired progression of the at least one of the physical and electrical property, the at least one processor configured to generate at least one control signal as a function of the comparison of the sensed data with the mapping for regulating electrosurgical energy output from said electrosurgical generator; and
the at least one processor including a first control module for controlling an inner control loop for controlling the electrosurgical generator in accordance with a first mapping of the mapping and a second control module for controlling an outer control loop for controlling the second control module in accordance with a second mapping of the mapping.
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Accused Products
Abstract
A system and method are provided for controlling an electrosurgical generator generating electrosurgical energy which is delivered to a patient for performing an electrosurgical procedure for sealing tissue. The system includes a control module executable on a processor for receiving sensed data corresponding to at least one physical or electrical property related to delivery of the electrosurgical energy. The control module processes the received sensed data and controls the electrosurgical generator including generating at least one corresponding control signal in accordance with the processed sensed data for regulating electrosurgical energy output from the electrosurgical generator. The controlling the electrosurgical generator further includes regulating at least one control variable, a respective control variable of the at least one control variable corresponding to sensed data corresponding to a property of the at least one physical or electrical property to follow at least one mapping for optimizing the tissue sealing.
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Citations
35 Claims
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1. An electrosurgical generator configured to generate electrosurgical energy delivered to a patient for performing an electrosurgical procedure for sealing tissue, the generator comprising:
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at least one sensor configured to sense at least one of a physical and electrical property related to the delivery of the electrosurgical energy; at least one processor configured to receive sensed data corresponding to the at least one of the physical and electrical property and to process at least a portion of said received sensed data to control the electrosurgical generator, the at least one processor further configured to continuously compare the received sensed data to a mapping having a time-based plot of desired progression of the at least one of the physical and electrical property, the at least one processor configured to generate at least one control signal as a function of the comparison of the sensed data with the mapping for regulating electrosurgical energy output from said electrosurgical generator; and the at least one processor including a first control module for controlling an inner control loop for controlling the electrosurgical generator in accordance with a first mapping of the mapping and a second control module for controlling an outer control loop for controlling the second control module in accordance with a second mapping of the mapping. - 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 configured to generate electrosurgical energy delivered to a patient for performing an electrosurgical procedure for sealing tissue, the generator comprising:
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at least one sensor configured to sense at least one of a physical and electrical property related to the delivery of the electrosurgical energy; at least one processor configured to receive sensed data corresponding to the at least one of the physical and electrical property and to process at least a portion of said received sensed data to control the electrosurgical generator, the at least one processor further configured to continuously compare the received sensed data to a mapping having a time-based plot of desired progression of the at least one of the physical and electrical property, the at least one processor configured to generate at least one control signal as a function of the comparison of the sensed data with the mapping for regulating electrosurgical energy output from said electrosurgical generator; the at least one processor further configured to receive and process additional data and generate the at least one control signal in accordance with the received and processed additional data, wherein the additional data is selected from at least one of an actual optical characteristic of tissue proximate the surgical site selected from the group of characteristics consisting of absorption properties, reflectivity properties, transmissivity properties and opaqueness properties, actual volume of tissue between jaws of an electrosurgical instrument delivering the electrosurgical energy, an actual elastomeric property of tissue proximate the surgical site, actual viability of tissue proximate the surgical site, actual pressure reactivity of tissue proximate the surgical site, actual moisture content level of tissue proximate the surgical site;
actual thickness of tissue proximate the surgical site, actual gap between electrodes of the electrosurgical instrument, actual pressure applied by the electrosurgical instrument, actual leakage current, a desired optical characteristic of tissue proximate the surgical site selected from the group of characteristics consisting of absorption properties, reflectivity properties, transmissivity properties and opaqueness properties, desired volume of tissue between jaws of the electrosurgical instrument, a desired elastomeric property of tissue proximate the surgical site, desired viability of tissue proximate the surgical site, desired viability of sealed tissue, desired pressure reactivity of tissue proximate the surgical site, desired moisture content level of tissue proximate the surgical site;
desired thickness of tissue proximate the surgical site, desired gap between electrodes of the electrosurgical instrument, desired pressure applied by the electrosurgical instrument type of electrosurgical instrument, type of tissue being sealed, patient profile data, patient'"'"'s disease profile data, at least one mapping of the at least one mapping, allowed leakage current, applied voltage, applied current, at least one predetermined threshold value and at least one target parameter for a corresponding parameter of the electrosurgical energy;the at least one processor further configured to determine a change in values of the data over a variable a rate of change of the data over the variable and a change of rate of change of the data over the variable, and to determine when an event has occurred, the event being selected from the group of events consisting of exceeding a predetermined threshold value by the data, by the change in values of the data over the variable, by the rate of change of the data over the variable, by the change of the rate of change of the data over the variable, by a difference between the data and a predetermined value, by a determined seal quality value, by a determined seal completion value, by a difference between the sensed data and a corresponding target value obtained from the at least one mapping, and by a timing value generated by a timing device; and the at least one processor further configured to determine when the quality of a seal is below a predetermined threshold level, and upon determining that the seal quality is below the predetermined threshold level the at least one processor initiates a new electrosurgical procedure for sealing tissue. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35)
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Specification