Power Calibration of Electrosurgical Units

Arencibia, Rosenda Valdés; Silva, Marco T. Alves; Faria, Vinícius Naves Rezende; Rezende, Marcos F. de; Milagre, Selma Terezinha

doi:10.1109/tim.2019.2896552

Cited by 3 publications

(2 citation statements)

References 11 publications

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“…In this way, Eqs. (12) to (18) were obtained. After each equation, the corresponded unit in which the result of the each derivative is expressed is shown.…”

Section: Evaluation Of the Measurement Uncertainty Associated With Thmentioning

confidence: 99%

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Traceability for measurements carried out on incremental step loading equipment

Júnior

Leal

Pires

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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The incremental step loading technique has been widely used for material hydrogen embrittlement characterization. However, due to numerous error sources that can affect the measurement results and to the current lack of standardization, users are facing difficulties in the evaluation of measurement uncertainty as well as in the metrological performance evaluation of incremental step loading equipment. The paper deals with evaluation of the metrological performance of equipment used to characterize the susceptibility of materials to hydrogen embrittlement through use of incremental step loading technique. Additionally, a procedure is developed to estimate the measurement uncertainty associated with the results obtained during the test. Two equipment configurations were verified. The first one, with a load cell of 20 kN, was used for test specimens with nominal dimensions of 30 mm, 30 mm and 200 mm in width, thickness and length, respectively; and the second, with a 1 kN load cell was used for test specimens with nominal dimensions of 10 mm × 10 mm × 60 mm. Three measurands were evaluated in each assemblage (force applied on the specimen, equipment arm positioning angle and stress). Several metrological parameters were estimated (bias, accuracy, expanded uncertainty, repeatability, maximum error, hysteresis and nonlinearity). The effectiveness of the proposed procedure for uncertainty assessment was tested by calculation of the uncertainty associated with lower value for fast fracture strength. From the obtained results, it was concluded that the two equipment configurations had excellent metrological properties, in both the loading and unloading phases. It was shown that the proposed procedure can properly estimate the uncertainty associated with measurement on incremental step loading testing. Considering the widely use of the incremental step loading technique, the results here presented can be particularly useful for ensuring the traceability of results to the International System of Units required by the ISO 17025 standard.

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“…In this way, Eqs. (12) to (18) were obtained. After each equation, the corresponded unit in which the result of the each derivative is expressed is shown.…”

Section: Evaluation Of the Measurement Uncertainty Associated With Thmentioning

confidence: 99%

“…A high-frequency active power calibration system for electrosurgical analyzers in the frequency range of 100 kHz to 1 MHz was proposed based [17]. Performance test to validate the conformity of the cutting and coagulation power values delivered by electrosurgical units was proposed by collaborators in [18].…”

Section: Introductionmentioning

confidence: 99%

Traceability for measurements carried out on incremental step loading equipment

Júnior

Leal

Pires

et al. 2019

J Braz. Soc. Mech. Sci. Eng.

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Systematic error compensation for improving accuracy of the electrosurgical unit

Silva

Müller²,

Vieira³

et al. 2022

Medical Engineering & Physics

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Performance evaluation of linear peristaltic volumetric infusion pump using a flow analyzer

Silva

Arencibia

Oliveira

et al. 2021

J. Phys.: Conf. Ser.

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This paper aims at validating the conformity of linear peristaltic volumetric infusion pump (LPVIP) using as reference a flow analyzer, model IN-300. The IN-300 model has an operating range of 1 ml/h at 1000 ml/h and a resolution of 0.1 ml/h. The standard IEC 60601-2-24 determines that an electronic balance with a resolution of 0.0001 g should be used during pump calibration. Therefore, the technical implementation of a flow analyzer for calibration and periodic verification of LPVIP at Hospital was evaluated. Tests were performed considering tem LPVIP and three values of infusion rates (25 ml/h, 50 ml/h and 100 ml/h). Several metrological parameters were evaluated (bias, repeatability, uncertainty and maximum error). The measurement uncertainty was assessed according to the recommendations of the JCGM 100. The technical viability of the flow analyzer use for calibration and periodic verification of LPVIP was demonstrated. The obtained results showed that only 20 % of the evaluated infusion pumps exhibited maximum errors within the manufacturer criterion for the three evaluated flow rates.

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Power Calibration of Electrosurgical Units

Cited by 3 publications

References 11 publications

Traceability for measurements carried out on incremental step loading equipment

Traceability for measurements carried out on incremental step loading equipment

Systematic error compensation for improving accuracy of the electrosurgical unit

Performance evaluation of linear peristaltic volumetric infusion pump using a flow analyzer

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