Electrosurgical system for use with non-stick coated electrodes

Patent metadata

Field	Value
Publication number	US-12167884-B2
Application number	US-202117554139-A
Country	US
Kind code	B2
Filing date	Dec 17, 2021
Priority date	Jul 8, 2019
Publication date	Dec 17, 2024
Grant date	Dec 17, 2024

Abstract

An electrosurgical system includes an electrosurgical instrument having an electrode with a polymeric dielectric coating; and an electrosurgical generator, which includes a power converter configured to generate RF energy; a sensor coupled to the power converter and configured to sense a parameter of the RF energy; and a controller coupled to the sensor and the power converter. The controller is configured to control the power converter to output an RF waveform to achieve conductor breakthrough through the polymeric dielectric coating. The controller is further configured to determine whether the conductor breakthrough occurred based on the parameter; and execute a treatment algorithm based on a determination of the conductor breakthrough.

First claim

What is claimed is:

1. An electrosurgical system comprising:
an electrosurgical instrument including an electrode having a polymeric dielectric coating;
an electrosurgical generator configured to generate RF energy;
a sensor configured to sense at least one parameter of the RF energy; and
a controller configured to:
control the electrosurgical generator to output an RF waveform to achieve conductor breakthrough through the polymeric dielectric coating;
determine whether the conductor breakthrough occurred based on at least one parameter of the RF energy; and
execute at least one of a treatment algorithm or output a regrasp alarm based on a determination of the conductor breakthrough.

2. The electrosurgical system according to claim 1 , wherein the controller is further configured to compare the at least one parameter to a set threshold indicative of the conductor breakthrough.

3. The electrosurgical system according to claim 2 , wherein the controller is further configured to control the electrosurgical generator to output the RF waveform for a set period of time.

4. The electrosurgical system according to claim 3 , wherein the controller is further configured to execute the treatment algorithm based on the determination of the conductor breakthrough occurring within the set period of time.

5. The electrosurgical system according to claim 1 , wherein the at least one parameter is measured impedance and the controller is further configured to compare the measured impedance to a set impedance threshold.

6. The electrosurgical system according to claim 5 , wherein the controller is further configured to execute the treatment algorithm in response to the measured impedance being below the set impedance threshold.

7. The electrosurgical system according to claim 6 , wherein the controller is further configured to adjust a power setting of the treatment algorithm prior to the execution of the treatment algorithm in response to the measured impedance being above the set impedance threshold.

8. The electrosurgical system according to claim 6 , wherein the controller is further configured to adjust a power setting of the RF waveform in response to the measured impedance being above the set impedance threshold.

9. The electrosurgical system according to claim 1 , wherein the at least one parameter is measured voltage and the controller is further configured to compare the measured voltage to a set voltage threshold.

10. The electrosurgical system according to claim 1 , wherein the at least one parameter is measured current and the controller is further configured to compare the measured current to a set current threshold.

11. A method comprising:
electrically coupling an electrosurgical instrument to an electrosurgical generator, the electrosurgical instrument including an electrode having a polymeric dielectric coating;
controlling the electrosurgical generator to output an RF waveform to achieve conductor breakthrough through the polymeric dielectric coating;
sensing at least one parameter of the RF waveform at a sensor of the electrosurgical generator;
determining at a controller of the electrosurgical generator whether the conductor breakthrough occurred based on the at least one parameter of the RF waveform; and
executing at least one of a treatment algorithm or output a regrasp alarm based on a determination of the conductor breakthrough.

12. The method according to claim 11 , wherein determining whether the conductor breakthrough occurred further includes comparing the at least one parameter to a set threshold indicative of the conductor breakthrough.

13. The method according to claim 12 , further comprising outputting the RF waveform for a set period of time.

14. The method according to claim 13 , wherein the treatment algorithm is executed based on the determination of the conductor breakthrough occurring within the set period of time.

15. The method according to claim 11 , further comprising:
measuring impedance; and
comparing the measured impedance to a set impedance threshold.

16. The method according to claim 15 , further comprising executing the treatment algorithm in response to the measured impedance being below the set impedance threshold.

17. The method according to claim 16 , further comprising adjusting a power setting of the treatment algorithm prior to the execution of the treatment algorithm in response to the measured impedance being above the set impedance threshold.

18. The method according to claim 16 , further comprising adjusting a power setting of the RF waveform in response to the measured impedance being above the set impedance threshold.

19. The method according to claim 11 , further comprising:
measuring voltage; and
comparing the measured voltage to a set voltage threshold.

20. The method according to claim 11 , further comprising:
measuring current; and
comparing the measured current to a set current threshold.

Assignees

• Covidien Lp

Inventors

• Boucher Todd W
• Robinson William E
• Fry Monte S
• Allen Iv James D
• Mchenry Jennifer R

Classifications

• A61B2018/00892

  Voltage · CPC title

• A61B2018/00875

  Resistance or impedance · CPC title

• A61B2018/00827

  Current · CPC title

• A61B2018/00779

  Power or energy · CPC title

• A61B2018/00702

  Power or energy · CPC title