Experimental study of vein heating during endovenous ultrasound obliteration in vitro*

Authors: Borde A.S., Belikov N.V., Sokolova D.Yu
Published in issue: #9(62)/2021
DOI: 10.18698/2541-8009-2021-9-733
Category: Medical sciences | Chapter: Medical equipment and devices
Keywords: varicose veins of the lower extremities, endovenous obliteration, ultrasound surgery, heat transfer, ultrasound instrument, vibration amplitude, temperature field, vascular wall perforation
Published: 08.09.2021

The paper describes vein heating in the process of ultrasonic obliteration. An experimental study of two modes of ultrasonic obliteration in vitro was carried out, including registration of the temperature field distribution on the outer surface of the venous wall and an assessment of the degree of contraction of the venous clearance. It was found that heating to a temperature of 98.55 °C in the contact zone of the ultrasonic instrument with the venous wall leads to its perforation and prevents further contraction of the venous clearance. Conclusions are made about the possibility of eliminating this undesirable effect by increasing the movement speed of the ultrasonic instrument, which also has a positive effect on reducing the time of the obliteration process.

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