MAUDE Adverse Event Report: WILLIAM COOK EUROPE ZENITH ALPHA¿ THORACIC ENDOVASCULAR GRAFT PROXIMAL COMPONENTS; MIH SYSTEM, ENDOVASCULAR GRAFT, AORTIC ANEURYSM TREATMENT

Model Number G35369

Device Problems Kinked (1339); Activation, Positioning or Separation Problem (2906)

Patient Problem No Code Available (3191)

Event Date 04/11/2018

Event Type  Injury  

Manufacturer Narrative

(b)(4).Name and address for importer site: (b)(4).Investigation is still in progress.

Event Description

Description of event according to initial reporter: "the device, upon deployment (specifically deployment of the trigger wires) enfolded on itself.Device was in the patient already, and enfolded in a way that another piece was added and which extended both proximally and distally from the original device; this bypassed the enfolding issue.Physician determined it would be too dangerous to try to straighten by the balloon".Patient outcome: the failing device did make the aorta smaller.

Manufacturer Narrative

Exemption number (b)(4).William cook europe aps (manufacturer) is submitting this report on behalf of cook medical incorporated (cmi) (importer).Manufacturer ref# (b)(4).G1) name and address for importer site: cook medical incorporated (cmi) 400 daniels way bloomington, in 47404.Registration no.: 3005580113.H6) ec method code: 4109 - historical data analysis.4112 - analysis of data provided by user/third party.4117 - device not accessible for testing.Ec conclusion code: 4315 - cause not established.Summary of investigational findings: according to the reported information the complaint device enfolded on itself during deployment when the trigger wires were released.The folding of the device made the aortic lumen diameter smaller.Subsequently another device was added which extended from the complaint device, to bypass the folding issue.According to the imaging review, because the bare stent and sealing stent were opposed to the greater curvature of the descending thoracic aorta by the guide wire and delivery cannula, the bare stent along the inner curvature opening tipped towards and perched on the inner aortic curvature.The perching was partially secondary the off center position of the graft, its release in a curve, and the relatively short bare stent length relative to the aortic diameter.Because the bare stent apices were perched on the inner aortic curvature, the bare and sealing stent formed a ridge along the inner aortic curvature, projecting into the aortic lumen.A second zta-p-44-125-w was implanted parallel more proximally, where the aortic diameter was slightly smaller and the seal zone relatively straight.Although completion angiography demonstrated a 40% inner aortic curvature stenosis as a result of the perched stents, minimum lumen diameter was still 24mm.There was no evidence of delivery system advancement during release that could have aggravated the tipping.According to the reported information, the patient did not experience any adverse effects.Based on the provided information and imaging, the performed investigation did not reveal any failures relating to deployment or manufacturing of the product and it was not possible to determine the possible cause of this event.Cook medical will continue to monitor for similar events.This report is required by the fda under 21 cfr part 803.This report is based on unconfirmed information submitted by others.Neither the submission of this report nor any statement made in it is intended to be an admission that any cook device is defective or malfunctioned; that a death or serious injury occurred; or that any cook device caused or contributed to; or is likely to cause or contribute to a death or serious injury if a malfunction occurred.

Event Description

Description of event according to initial reporter: "the device, upon deployment (specifically deployment of the trigger wires) enfolded on itself.Device was in the patient already, and enfolded in a way that another piece was added and which extended both proximally and distally from the original device; this bypassed the enfolding issue.Physician determined it would be too dangerous to try to straighten by the balloon".Patient outcome: the failing device did make the aorta smaller.

• Brand Name: ZENITH ALPHA¿ THORACIC ENDOVASCULAR GRAFT PROXIMAL COMPONENTS
• Type of Device: MIH SYSTEM, ENDOVASCULAR GRAFT, AORTIC ANEURYSM TREATMENT
• Manufacturer (Section D): WILLIAM COOK EUROPE; sandet 6; bjaeverskov 4632 ; DA 4632
• MDR Report Key: 7482247
• MDR Text Key: 107188496
• Report Number: 3002808486-2018-00503
• Device Sequence Number: 1
• Product Code: MIH
• UDI-Device Identifier: 10827002353692
• UDI-Public: (01)10827002353692(17)200926(10)E3633946
• Combination Product (y/n): N
• PMA/PMN Number: P140016
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: company representative
• Type of Report: Initial,Followup
• Report Date: 08/09/2018

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?: No
• Device Operator: Health Professional
• Device Expiration Date: 09/26/2020
• Device Model Number: G35369
• Device Catalogue Number: ZTA-P-44-125-W
• Device Lot Number: E3633946
• Was Device Available for Evaluation?: No
• Distributor Facility Aware Date: 04/11/2018
• Device Age: 7 MO
• Initial Date Manufacturer Received: 04/11/2018
• Initial Date FDA Received: 05/03/2018
• Supplement Dates Manufacturer Received: 07/19/2018
• Supplement Dates FDA Received: 08/09/2018
• Is This a Reprocessed and Reused Single-Use Device?: No
• Patient Sequence Number: 1
• Patient Outcome(s): Life Threatening