(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.The device is expected to be returned for investigation.It has not yet been received.A follow-up report will be submitted with all additional relevant information.
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(b)(4).Correction: device was not returned.(b)(4).It is indicated that the device is not returning for evaluation; therefore, a failure analysis of the complaint device could not be completed.The investigation was unable to determine a conclusive cause for the reported difficulties.A review of the lot history record identified no manufacturing nonconformities issued to the reported lot that would have contributed to this event.Additionally, a review of the complaint history identified no other incidents reported from this lot.Based on the information reviewed, there is no indication of a product quality issue with respect to the design, manufacture or labeling of the device.
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