The device was discarded by the hospital following the event; therefore, the device was not returned to the manufacturer for evaluation.Without the return of the device, the reported incident cannot be confirmed.Subsequently, any analysis to determine subcomponent failures or addressing corrective action cannot be initiated.The explosion of the batteries is the spontaneous expulsion of the battery anode.This would most likely occur when there is a short introduced into the power supply.There are too many variables involved that could cause the batteries to overheat, or to short out to adequately speculate on the cause for this incident.Any one of the warning conditions listed in the instructions for use (ifu) could account for the battery anode expulsion.
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