JPWO2021138472A5

JPWO2021138472A5 -

Info

Publication number: JPWO2021138472A5
Application number: JP2022540736A
Authority: JP
Publication date: 2024-01-09

Claims

An electrosurgical system for fusing or sealing tissue, the system comprising:
grasping tissue being sealed; and transmitting RF energy to an area of the tissue being grasped configured to fuse or seal the tissue being grasped;
an electrosurgical instrument configured to;
an electrosurgical generator connected to the electrosurgical instrument and providing the RF energy to the electrosurgical instrument used to seal the tissue;
Equipped with
The electrosurgical generator includes:
a plurality of sensors configured to measure electrical current associated with the tissue being grasped by the electrosurgical instrument, the electrical current being measured being transmitted to the tissue by the electrosurgical instrument; the plurality of sensors responsive to the RF energy;
generating an amount of RF energy as commanded by a controller; and transmitting the generated RF energy to the electrosurgical instrument;
an RF amplifier configured as;
receiving the measured current from the plurality of sensors over a predetermined period of time;
identifying a maximum current value and when the maximum current value occurred from the measured current over the predetermined period;
plurality used to characterize different conditions or conditions associated with the tissue being grasped, each indicating how much RF energy is needed to fuse or seal the tissue; generate a threshold value based on the maximum current value,
receiving subsequent current measurements from the plurality of sensors, and transmitting the RF energy being generated in response to the condition or condition of the tissue undergoing fusion or sealing to the plurality of current measurements; instructing the RF amplifier to modify based on crossing one or more of the thresholds of
A controller configured as,
Equipped with
An electrosurgical system characterized by:

The plurality of thresholds generated may depend on one or more of the type, volume, or thickness of the tissue being grasped by the electrosurgical instrument, the type of electrosurgical instrument being used, or the surgical procedure being performed. The electrosurgical system according to claim 1, characterized in that it is based on two or more.

3. The RF energy according to claim 1 or 2, wherein modifying the RF energy comprises adjusting one or more of the voltage, current, or power of the RF energy being generated by the RF amplifier. electrosurgical system.

4. An electrosurgical system according to any preceding claim, further comprising a display configured to display information associated with the electrosurgical generator.

Claim wherein the display is configured to display a status of the electrosurgical generator including a current RF energy output and one or more parameters associated with the current RF energy output. The electrosurgical system according to item 4.

The electrosurgical system of claim 4, wherein the display is configured to display the status of the electrosurgical instrument connected to the electrosurgical generator.

Electrosurgery according to any one of claims 1 to 6, further comprising a user interface configured to receive user input to control operation of one or more of the electrosurgical generators. system.

8. The electrosurgical system of any preceding claim, further comprising an indicator for displaying status information to the user and comprising one or more of an audible, tactile, or visual indicator.

An electrosurgical system for fusing or sealing tissue, the system comprising:
grasping tissue being sealed; and transmitting RF energy to an area of the tissue being grasped configured to fuse or seal the tissue being grasped;
an electrosurgical instrument configured to;
an electrosurgical generator configured to be connected to the electrosurgical instrument to provide RF energy to the electrosurgical instrument, the electrosurgical generator comprising:
at least one sensor configured to measure at least one property associated with the tissue being grasped over a predetermined period of time;
an RF amplifier configured to generate an amount of RF energy for the electrosurgical instrument; and calculating a plurality of threshold values based on the at least one characteristic measured by the at least one sensor;
determining that at least one threshold has been crossed by a subsequent measurement from the at least one sensor; and modifying the RF energy being generated in response to the at least one threshold being crossed. commanding the RF amplifier to
A controller configured as,
the electrosurgical generator comprising;
An electrosurgical system comprising:

The at least one characteristic being measured by the at least one sensor includes: measuring a current or voltage associated with the RF energy currently being generated to the tissue being grasped; calculating a power measurement or phase angle or difference between an RF output voltage and an RF output current during delivery of the RF energy from the electrosurgical generator to the electrosurgical instrument grasping the tissue; 10. The electrosurgical system of claim 9, further comprising: calculating.

11. The electrosurgical system of claim 9 or 10, wherein the plurality of threshold values correspond to different states of the tissue undergoing fusion or sealing.

12. The electrosurgical system of claim 11, wherein one of the different conditions includes when the tissue reaches a dry point.

12. The electrosurgical system of claim 11, wherein one of the different conditions includes determining that the tissue has been previously sealed or is a repeat seal.

The controller comprises: determining whether at least one of the thresholds has been crossed; and commanding the RF amplifier to modify the RF energy being generated for the electrosurgical instrument. 14. Electrosurgical system according to any one of claims 9 to 13, characterized in that the delay is implemented for a predetermined period of time.

The controller is further configured to change the measured value of the parameter obtained from the at least one sensor over different predetermined time periods to predict whether one of the plurality of thresholds will be crossed. The electrosurgical system according to any one of claims 9 to 14, characterized in that the electrosurgical system calculates .

the RF amplifier initially generates RF energy in a ramp manner for an initial period;
the at least one sensor monitors the at least one characteristic for a maximum value or peak during the initial period corresponding to an RF output peak;
The electrosurgical system according to any one of claims 9 to 15.

17. The electrosurgical system of claim 16, wherein the lamp format is based on the type of tissue being fused or sealed.

18. The ramp scheme for initially generating the RF energy corresponds to an initial predetermined value of 35V to a maximum value of 45V over a predetermined period of 500ms. Electrosurgical system described.

further comprising detecting whether a sufficient amount of tissue has been grasped by the electrosurgical instrument,
The detection includes:
generating a low voltage measurement signal with the electrosurgical generator to the electrosurgical instrument that is being transmitted to the tissue;
measuring an impedance of the tissue being grasped associated with the transmitted low voltage measurement signal with the electrosurgical instrument, and determining whether the measured impedance is within an operating range;
carried out by
The electrosurgical system according to any one of claims 9 to 18.

An electrosurgical generator having a memory module embodying thereon a program executable by a processor for implementing a method for managing energy generation, the electrosurgical generator comprising:
The method includes:
receiving sensor data regarding tissue being grasped by the electrosurgical instrument for a predetermined period of time;
generating one or more threshold conditions configured to modify the amount of energy being generated by the electrosurgical generator based on the received sensor data;
receiving subsequent sensor data;
determining that the subsequently received sensor data satisfies at least one of the one or more threshold conditions;
modifying the amount of energy being generated by the electrosurgical generator based on the one or more threshold conditions being satisfied;
Equipped with
An electrosurgical generator characterized by: