MAUDE Adverse Event Report: COOK IRELAND LTD ZILVER PTX 35 DRUG-ELUTING STENT; NIU STENT, SUPERFICIAL FEMORAL ARTERY, DRUG-ELUTING

Model Number	G38488
Medical Device Problem Code	Difficult to Remove (1528)
Health Effect - Clinical Code	No Consequences Or Impact To Patient (2199)
Date of Event	05/19/2017
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
Cook ireland ltd (manufacturer) is submitting this report on behalf of cook medical incorporated (cmi)(importer).Exemption number: e2016031.Information pertaining to section g.1 as follows: importer site contact and address: (b)(4) cook medical incorporated (cmi) 1025 acuff road p.O box 4195 bloomington indiana 47402-4195 importer site establishment registration number: 3005580113 pma/510(k) #p100022/s014 the zisv6-35-125-7-80-ptx device of lot number c1335076 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.There are two failure modes linked to this occurrence and device.Reference report# 3001845648-2017-00270 for the investigation into the other failure mode (retraction wire separates from stent retraction sheath).From customer testimony, the device was flushed prior to use.The procedure was 3-5 minutes between advancing the device and the attempted withdrawal.The device was advanced over a non-hydrophilic, cook rosen wire guide.The wire guide had been used previously and was wiped between uses.On evaluation of the returned device, it was noted that the stent was deployed, and not returned with the device.The device was returned with a wire guide still inserted, and the wire guide was measured to be 0.0355¿ diameter.20cm of the wire guide was observed exiting the device distal end, with a kink in the wire at 19.5cm from the distal tip of the wire.There was no tactile damage on the sheath.The engineers made an unsuccessful attempt to remove the wire guide.The device handle was opened, and it was noted that the retraction wire had separated from the stent retraction sheath (srs).The outer sheath was cut, and the two portions of the wire guide were removed with no resistance.The wire guide was uncoiled, and there was congealed blood observed on the wire guide.A new 0.035¿ diameter wire guide was advanced through the delivery system portions, and was unable to pass a point 70cm from the distal white tip.The customer complaint is confirmed as the wire guide was returned stuck inside the device.The lab evaluation determined that there were two failure modes for this device, difficult withdrawal of device and retraction wire separating from the stent retraction sheath.Product development was unable to determine if the two failure modes were linked.Possible causes for this occurrence could include blood congealing on the wire guide.This could cause the wire guide to bind inside the device lumen, causing or contributing to the inability to withdraw the device over the wire guide.However, as the circumstances of use cannot be replicated in a laboratory environment, a definitive root cause cannot be determined.From the product instruction for use: ¿following stent deployment, if resistance is met during the withdrawal of the delivery system, carefully remove the delivery system and wire guide as a unit¿.Prior to distribution all zilver ptx devices are subject to visual inspection and functional checks to ensure device integrity.A review of the relevant manufacturing records revealed no discrepancies that could have contributed to this complaint.Upon review of complaints, this failure mode has not occurred previously with this lot number.Based on the information available to date, there is no evidence to suggest that there are any manufacturing issues associated with lot number c1335076.According to the initial reporter, the patient did not experience any adverse effects due to this occurrence.Quality engineering will continue to monitor complaints of this nature for potential emerging trends.
Event or Problem Description
This initial report is being submitted due to the malfunction precedence: "delivery system cannot be withdrawn".This report forms part of retrospective review of open complaints for a new malfunction precedence for this device family.Stent catheter was flushed and prepped according to ifu, stent catheter tracked into the body fine with no resistance.After stent was deployed, without error, stent catheter became "stuck" on the wire.Stent catheter and wire were then removed.

• Brand Name: ZILVER PTX 35 DRUG-ELUTING STENT
• Common Device Name: NIU STENT, SUPERFICIAL FEMORAL ARTERY, DRUG-ELUTING
• Manufacturer (Section D): COOK IRELAND LTD; o halloran road; limerick
• MDR Report Key: 6810553
• Report Number: 3001845648-2017-00351
• Device Sequence Number: 11202550
• Product Code: NIU
• UDI-Device Identifier: 10827002384887
• UDI-Public: (01)10827002384887(17)171123(10)C1335076
• Combination Product (Y/N): N
• Initial Reporter State: CA
• Initial Reporter Country: US
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Device Implanted Year: 2017
• Reporter Type: Manufacturer
• Report Source: company representative,health
• Initial Reporter Occupation: Other
• Type of Report: Initial
• Report Date (Section B): 07/25/2017

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Operator of Device: Health Professional
• Device Model Number: G38488
• Device Catalogue Number: ZISV6-35-125-7-80-PTX
• Was Device Available for Evaluation?: Yes
• Was the Report Sent to FDA?: No
• Distributor Facility Aware Date: 07/25/2017
• Event Location: Hospital
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 07/25/2017
• Initial Report FDA Received Date: 08/22/2017
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1