(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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It was reported that the procedure was to treat a lesion located in the heavily calcified, mildly tortuous anterior tibial artery.There were no issues noted during preparation of the guide wire prior to use.There was no resistance felt during advancement of the guide wire to the lesion; however, the guide wire felt like it was sticking inside the sheath.It was removed and inspected and the polymer was observed to be lifting of the guide wire.It was confirmed that none of the coating remained in the patient.No adverse patient effects or clinically significant delay in the procedure were reported.No additional information was provided.
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Internal file number - (b)(4): evaluation summary: the device was returned for analysis.Visual and dimensional inspections were performed on the returned device.The damaged polymer was confirmed.The difficult to position could not be replicated in a testing environment due to the conditions of the returned device.It is possible the guide wire was not sufficiently wetted prior to use, therefore the hydrophilic coating was not properly activated, which resulted in the reported resistance with the introducer sheath; however this could not be confirmed.Further manipulation as resistance was encountered would have resulted in the noted polymer damages.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.The investigation was unable to determine a conclusive cause for the reported difficult to position however the damaged polymer appears to be related to circumstances of the procedure.There is no indication of a product quality issue with respect to the design, manufacture, or labeling of the device.
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