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Related Experiment Video

Updated: Aug 20, 2025

Assessment of Plasma Coagulation on Liver Tissue in a Large Animal Model In Vivo
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Plasma Scalpels: Devices, Diagnostics, and Applications.

Ao Xiao1, Dawei Liu1,2, Dongcheng He3

  • 1State Key Lab of Advanced Electromagnetic Engineering and Technology, School of Electrical and Electronic Engineering, Huazhong University of Science and Technology, Wuhan 430074, China.

Biomedicines
|November 26, 2022
PubMed
Summary

This study details plasma scalpels used in electrosurgery, analyzing argon plasma coagulation and saline discharge devices. It explores diagnostic methods to optimize plasma parameters for improved surgical efficacy.

Keywords:
argon plasma coagulationdiagnosticsdischarge in salineplasma scalpelsurgery

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Area of Science:

  • Electrosurgery
  • Gas Discharges
  • Plasma Physics

Background:

  • Plasma scalpels leverage gas discharges for electrosurgery.
  • Two primary types exist: single-electrode argon plasma coagulation and two-electrode devices in saline.

Purpose of the Study:

  • To introduce the device structure and physicochemical parameters of plasma scalpels.
  • To detail diagnostic methods for analyzing plasma characteristics.
  • To provide guidance for improving plasma scalpel technology.

Main Methods:

  • Voltage and current characteristics analysis.
  • Optical emission spectroscopy.
  • Electron spin resonance and high-speed imaging.
  • Determination of plasma power, gas temperature, electron density, and active species density.
  • Study of plasma discharge ignition dynamics in water.

Main Results:

  • Characterization of two plasma scalpel types.
  • Identification of critical process parameters influencing efficacy.
  • Understanding of plasma discharge ignition dynamics.
  • Demonstration that physical and chemical effects can be independently adjusted.

Conclusions:

  • Plasma scalpel efficacy relies on combined physical (current, electric field) and chemical (energetic electrons, reactive species) effects.
  • Separate adjustment of these effects can enhance treatment outcomes.
  • The study provides insights for future plasma scalpel device development.