The reported device, intended for use in treatment, was received for evaluation.A visual inspection was performed on the product and button assembly is missing from housing.There was a relationship found between the returned device and the reported incident.Product failed functional testing with blade stall error and overheating using footswitch.Footswitch was used because button assembly is missing.Cause of overheating and errors is a corroded motor/gearbox.The housing and the gearbox were removed from the motor.The gearbox was found to be jammed.The complaint was confirmed and the root cause has been determined to be corrosion of the motor and gearbox assembly.A blade stall condition will result in increased current draw from the control unit which will heat the motor and hand piece housing.Factors which can contribute to gearbox corrosion include cleaning and sterilization methods and the chemicals involved.A review of the device history records showed there were no indications to suggest that the product did not meet manufacturing specification or would not be able to perform as intended.A complaint history review concluded this was a repeat issue.No containment or corrective actions are recommended at this time.
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