(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 evaluation.It has not yet been received.A follow up report will be submitted with all relevant information.
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Internal file number - (b)(4): the device was returned for analysis.Visual, dimensional, and functional inspections were performed on the returned device.The reported stent damage, difficult to position, and difficult to remove from the guiding catheter were confirmed.The investigation was unable to determine a conclusive cause for the reported difficulty removing the protective sheath.The difficulty removing the protective sheath could not be replicated in a testing environment due to the condition of the returned device.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 similar incidents from this lot.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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