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Published on: November 11, 2013
Electrode performance beyond the manufacturer's recommended lifespan using the Dornier MFL 5000 lithotripter
1Division of Urology, Saint Michael's Hospital and University of Toronto, Canada. rjohn.honey@utoronto.ca
Background And Purpose:
Electrodes used by the Dornier MFL 500 lithotripter have a specified lifespan, after which, the manufacturer recommends replacing the electrode before continuing the treatment. The aim of this study was to investigate whether electrodes continue to function effectively beyond 100% consumption by measuring the pressure output of electrodes up to 300% consumption or until electrode failure.
Materials And Methods:
We assessed new, refurbished, and twice-refurbished electrodes to compare their respective performances.
Results:
Rather than a decrease, there was a trend toward increased pressure output beyond 100% electrode consumption, with no drop in pressure prior to 300% consumption or electrode failure. All three types of electrodes functioned adequately above 100% consumption.
Conclusion:
These observations suggest that discarding the electrode before the completion of the treatment or electrode failure is not warranted. Using a single electrode rather than multiple electrodes to complete a treatment has the potential to save both time and cost.
