A replacement power adapter was sent to the customer and request the defective power adapter be returned for eval.In f/u with the customer, she indicated that she did get a small shock from the exposed wires, however, there was no medical treatment involved.The product involved in the complaint was not returned for eval/investigation at this time.Therefore, no conclusions can be made as to the cause of the event.The customer reported sparking from exposed wires on her pump in style power adapter.On 04/04/2011, medela issued a pump in style power adapter safety notification.The safety notification was the result of the findings of capa (b)(4), which addressed issues with exposed wires and found the probable root cause to be degradation of the insulation separating the positive and negative wires.The probable causes of the degradation of the insulation have been attributed to the cord being wrapped around the transformer housing and/or being pulled from the outlet by the cord instead of by the transformer housing.As a result, customers were informed not to wrap the cord around the transformer to prevent damage and to discontinue use of any transformer that appears damaged.In addition, medela has upgraded the cord and the transformer material has been changed to a more heat stable material.The updated transformer also contains both electrical and heat thermal fuses so that in the event of a failure, the transformer will fail safe.The subject unit was manufactured prior to the corrective action under ca (b)(4).The customer was either provided with a replacement transformer or referred to an ordering source to resolve this issue.No further action is required.Complaint data trending will continue to be monitored by medela quality mgmt for investigation/capa consideration.
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