Key result
Systematic error correction cuts electrosurgical cutting power error ~84% and improves coagulation accuracy.
Why the study?
To improve the accuracy of electrosurgical units through systematic error correction, enabling safer operation for surgeons and patients.
Does systematic error correction improve the accuracy of electrosurgical units?
Does systematic error correction improve the accuracy of electrosurgical units?
Systematic error correction using regression analysis significantly improves the accuracy of electrosurgical units, bringing error values below IEC 60601-2-2 standard limits.
Error correction may improve ESU accuracy in lab tests; leaves open clinical validation and practice change.
This paper presents an approach to systematic error correction for improving the accuracy of the electrosurgical unit (ESU), through a method that enables safer operation for both surgeons and patients. The equations for systematic errors encountered during the calibration of the eight ESUs were obtained using regression analysis. The ESU calibration was performed using a power analyzer and the reference power value was selected on the ESU panel; the power value indicated by the ESU was noted from the power analyzer and recorded. The fitted regression models were suitable for predicting systematic errors associated with ESU output power values, as a reduction of about 84 % was noted in cutting power (CuP) and about 74 % for coagulation power (CoP). After correction, systematic error values remained below 1.9 W and 0.4 W in cutting and coagulation power, respectively. The maximum error values obtained were less than those specified for the IEC 60601-2-2 standard for all evaluated ESUs.
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Silva et al. (2022) studied Electrosurgical unit (ESU) calibration (n=8). Systematic error correction using regression analysis vs. Uncorrected ESU output was evaluated on Systematic error in cutting power (CuP) and coagulation power (CoP). Systematic error correction using regression analysis reduced cutting power error by about 84% (to <1.9 W) and coagulation power error by about 74% (to <0.4 W) in electrosurgical units.
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