Evaporation Peculiarities of Soft Biological Tissues in the Process of Automated 2D-Scanning of CO2 Laser Radiation

Alexander K. Dmitriev
NRC “Kurchatov Institute”, Moscow, Russian Federation

Alexey N. Konovalov orcid (Login required)
NRC “Kurchatov Institute”, Moscow, Russian Federation

Vladimir N. Kortunov
NRC “Kurchatov Institute”, Moscow, Russian Federation

Valery A. Ulyanov orcid
NRC “Kurchatov Institute”, Moscow, Russian Federation


Paper #9115 received 7 Jun 2024; revised manuscript received 1 Oct 2024; accepted for publication 1 Oct 2024; published online 10 Nov 2024.

DOI: 10.18287/JBPE24.10.040307

Abstract

The peculiarities of laser evaporation of soft biological tissues in the process of two-dimensional scanning of continuous CO2 laser radiation were studied experimentally and numerically. Samples from agar and pig heart muscle in vitro were used as soft biotissue models. The depth of evaporation and the peculiarities of the formed surface of the evaporated zone were studied for different regimes of exposure: radiation power, scanning speed of the laser beam, filling density of the scanned zone. A semi-empirical model of laser evaporation of soft biological tissues with high water content is proposed based on the energy balance and the evaporative mechanism of biotissue removal. Studies have shown good agreement between experimental data and data obtained based on the proposed model.

Keywords

CO2 laser; automated scanning; precision evaporation; biomodel; robot-assist surgery

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