MAUDE Adverse Event Report: MICRO THERAPEUTICS, INC. DBA EV3 CONCERTO COIL; DEVICE, EMBOLIZATION, VASCULAR

Model Number	NV-2-8-HELIX
Medical Device Problem Code	Separation Failure (2547)
Health Effect - Clinical Code	No Known Impact Or Consequence To Patient (2692)
Date of Event	03/17/2020
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
The device was not returned; the reported event could not be confirmed.The cause of the event could not be conclusively determined from the reported information.Mdrs related to this event: 2029214-2020-00350, 2029214-2020-00351.If information is provided in the future, a supplemental report will be issued.
Event or Problem Description
Medtronic received report that the concerto coil encountered detachment issues.
Additional Manufacturer Narrative
The concerto coil was returned without a dispenser coil and within an introducer sheath.There was no instant detacher returned with the device.No damages or irregularities were found with the introducer sheath.The actuator interface was securely attached to the coupler tube.No evidence of mechanical detachment using an instant detacher was found at this location.The concerto pushwire was found kinked and broken between the positive load indicator and break indicator with the release wire found broken.This is indicative that a manual detachment was performed at this location.The break indicator was found intact.The concerto pusher was found bent and bent/kinked.The coin was found still against the lumen stop.The shield coil was found intact with the implant coil still attached.The implant coil was found stretched and damaged with the polypropylene filament broken.A manual detachment was then attempted by retracting the release wire and the release wire was found stuck.The distal outer jacket was removed, and the release wire was retracted, successfully detaching the device with no resistance encountered.No other anomalies were observed.Based on the analysis performed, the concerto coil was confirmed to have non-detachment as the pushwire was returned with the implant coil still attached.The likely cause for the non-detachment are the bends and kinks found on the pushwire, causing the release wire to become stuck.Retracting the release wire distal to the bends/kinks successfully detached the implant coil with no resistance and no issues.The implant coil was found damaged/stretched and the pusher was found bent/kinked.Possible causes for coil and pushwire damage are patient vessel tortuosity, device was not hydrated, continuous flush was not administered during procedure, advancing device against resistance or damaged during shipment as the device was returned without its defensive dispenser coil.Since the instant detacher was not returned, any contribution of the instant detacher to the non-detachment could not be determined.Linked mdrs: 2029214-2020-00349 2029214-2020-00350 2029214-2020-00351 medtronic is submitting this report to comply with fda reporting regulations under 21 cfr parts 4 and 803.This report is based upon information obtained by medtronic, which the company may not have been able to fully investigate or verify prior to the date the report was required by the fda.Medtronic has made reasonable efforts to obtain more complete information and has provided as much relevant information as is available to the company as of the submission date of this report.This report does not constitute an admission or a conclusion by fda, medtronic, or its employees that the device, medtronic, or its employee caused or contributed to the event described in the report.In particular, this report does not constitute an admission by anyone that the product described in this report has any ¿defects¿ or has ¿malfunctioned¿.These words are included in the fda 3500a form and are fixed items for selection created by the fda to categorize the type of event solely for the purpose of regulatory reporting.Medtronic objects to the use of these words and others like them because of the lack of definition and the connotations implied by these terms.This statement should be included with any information or report disclosed to the public under the freedom of information act.Any required fields that are unpopulated are blank because the information is currently unknown or unavailable.A good faith effort will be made to obtain the applicable information relevant to the report.If information is provided in the future, a supplemental report will be issued.
Event or Problem Description
Medtronic received additional information: the 3 concerto coils failure to detach.There was only difficulty detaching the coils.An instant detacher (id) was used.The model and lot number of the id is unknown.The number of manual attempts is unknown.The model and lot number of the catheter used is unknown.A continuous flush was used.

• Brand Name: CONCERTO COIL
• Common Device Name: DEVICE, EMBOLIZATION, VASCULAR
• Manufacturer (Section D): MICRO THERAPEUTICS, INC. DBA EV3; 9775 toledo way; irvine CA 92618
• MDR Report Key: 9941927
• Report Number: 2029214-2020-00349
• Device Sequence Number: 3882123
• Product Code: KRD
• UDI-Device Identifier: 00847536013346
• UDI-Public: 00847536013346
• Combination Product (Y/N): N
• Initial Reporter Country: KS
• PMA/510(K) Number: K090046
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Reporter Type: Manufacturer
• Report Source: company representative,foreig
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 05/06/2020

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 Expiration Date: 06/13/2020
• Device Model Number: NV-2-8-HELIX
• Device Lot Number: A475420
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 04/13/2020
• Initial Date Received by Manufacturer: 03/17/2020
• Supplement Date Received by Manufacturer: 05/03/2020
• Initial Report FDA Received Date: 04/08/2020
• Supplement Report FDA Received Date: 05/06/2020
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Patient Sequence Number: 1