One set of internal paddles was returned to philips for evaluation.A philips quality engineer evaluated the returned internal paddle set.The reported symptom could not be reproduced.The device passed all performance verification testing.The internal paddles were able to deliver a shock into a test load 20 times without a failure.It was noted that the returned internal paddles were almost five years old; the pins on the green connector showed wear and contamination, the gold plating on the pins was worn off and nickel layer was exposed, and the connector gasket was missing.There were no electronic event files or ecg monitoring waveforms of the incident available for review.The sterilizable defibrillator paddles application note has instructions on how to perform mechanical, visual, functional, and continuity checks.It notes that ¿paddle life depends upon the frequency and method of sterilization and handling, rather than age.All buttons, cables and electrodes must be routinely tested, as described in ¿paddle checks¿ on page 2.Replace paddles when they fail testing or when functionality or appearance is questionable.¿ philips was not able to confirm the reported malfunction.Because the problem could not be recreated, the cause cannot be determined.
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