(b)(4).During processing of this complaint, attempts were made to obtain complete event, patient and device information.Concomitant medical products: the udi is unknown because the part number was not provided.The device was not returned for analysis.A review of the lot history record and complaint history of the reported lot could not be conducted because the part number was not provided.As the device was not returned for analysis, a conclusive cause for the reported difficulties cannot be determined, however, the product risk assessment identifies this as a foreseeable event.Based on the information reviewed and provided, there is no indication of a product quality issue with respect to manufacture, design or labeling.
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