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(b)(4).Exemption number: e2016031.Importer site contact and address: (b)(4).Importer site establishment registration number: (b)(4).Pma/510(k) # k051124 /k163169.This follow up report is being submitted due to the evaluation of the device involved in this event and the conclusion of this investigation.The zib6-80-14.0-60 device of lot number c1310732 involved in this complaint was returned for evaluation, without the original packaging.With the information provided, a physical examination and document based investigation was conducted.From customer testimony, it is known that the physician did not encounter resistance when removing the device from the tray.The red safety tab was still in place.There was no damage noted on the package or anywhere else on the device.On evaluation of the returned device, it was observed that the device was returned without the red safety tab, and with the stent fully deployed.A kink was observed in the flexor, 24.5cm from the white cap.The kink could have occurred during transport, as the device was returned without the original packaging.The distance between the stent stop and the proximal end of the white tip was 9cm.The stent was measured as 6cm in length, and there was no damage noted on the stent.There is no evidence to suggest that this incident did not occur.Therefore, the complaint is confirmed based on customer testimony.Possible causes for this occurrence could include the device transport, or device handling.This could cause or contribute to the stent partially deploying the packaging.However, as the circumstances of use cannot be replicated in a laboratory environment, a definitive root cause cannot be determined.There is no evidence to suggest that the customer did not follow the product instructions for use.All zib6 (zilver 635 biliary devices) are subject to visual and functional checks.A review of the relevant manufacturing records did not reveal any discrepancies which could have contributed to this complaint issue.Upon review of complaints, this failure mode has not occurred previously with this lot number.Based on the information provided to date, there is no evidence to suggest any manufacturing issues associated with lot number c1310732.According to the initial reporter, the patient did not experience any adverse effects due to this occurrence.Complaints of this nature will continue to be monitored for potential emerging trends.
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