Experimental study on electroreactivity and electrocoagulation of interventional materials

Abstract

Objective To investigate the difference of electroreactivity and electrocoagulation of commonly used interventional materials. Methods The resistance of different types of micro⁃guide wire and spring coil are measured with a multimeter to obtain the physical parameters reflecting the conductivity. The in vitro electrolytic gas production experiment was carried out with physiological saline and isolated arterial blood of New Zealand white rabbits as the medium, the gas production data were obtained, and the thrombus adhesion on the surface of the materials was observed by scanning electron microscopy. Results The resistance measurement results showed ASAHI, SilverSpeed, Traxcess micro⁃guide wire and Axium spring coil have good conductivity, the electrolytic gas production could occur after power⁃up, and the voltage was positively correlated with gas production speed (P＜0.05, for all). The results of in vitro arterial blood electrocoagulation showed that better thrombosis quality could be obtained by increasing the voltage. Conclusions The micro⁃guide wire and spring coil used for intra⁃arterial electrocoagulation can preliminarily selected by resistance measurement, and the voltage is the key factor to determine the electrical reaction intensity and thrombosis quality.

doi：10.3969/j.issn.1672⁃6731.2022.11.009