MAUDE Adverse Event Report: MICROVENTION INC WEB; INTRASACCULAR FLOW DISRUPTION DEVICE

Model Number	W5-4.5-3-MVI-3
Medical Device Problem Code	Separation Failure (2547)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	02/06/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
A search for non-conformances associated with the reported part/lot number combination did not reveal any production-related issues relevant to the complaint that occurred during manufacturing of the device.Potential complications as referenced on the ifu, include but are not limited to the following: hematoma at the site of entry, aneurysm rupture, emboli, vessel perforation, parent artery occlusion, hemorrhage, ischemia, vasospasm, clot formation, device migration or misplacement, premature or difficult device detachment, non-detachment, incomplete aneurysm filling, revascularization, post-embolization syndrome, and neurological deficits including stroke and death.Investigation conclusion the investigation of the returned web system found the proximal connector bent and the heater coil windings stretched.The device failed continuity and resistance testing due to the damaged proximal connector and heater coil windings.However, the heater coil pet and tether were found melted, indicating that the device was activated using a detachment controller during the procedure; therefore, the damage to the proximal connector and heater coil windings likely occurred post-activation.The stretched heater coil windings are an indication that the tether could have been caught in between the coil windings and caused the heater coil to stretch when the delivery system was pulled/retracted during the procedure.The physical evaluation of the device could not identify the conditions or circumstances that led to the proximal connector damage, but the damage is consistent with the device experiencing forces exceeding the pusher's yield strength.
Event or Problem Description
No additional information was received.Please see h6 and h11.
Additional Manufacturer Narrative
The device was returned to the manufacturer for evaluation.The investigation is ongoing and not finalized.Upon completion of the investigation, a supplemental mdr will be submitted.A search for non-conformances associated with the reported part/lot number combination did not reveal any production-related issues relevant to the complaint that occurred during manufacturing of the device.Potential complications as referenced on the ifu, include but are not limited to the following: hematoma at the site of entry, aneurysm rupture, emboli, vessel perforation, parent artery occlusion, hemorrhage, ischemia, vasospasm, clot formation, device migration or misplacement, premature or difficult device detachment, non-detachment, incomplete aneurysm filling, revascularization, post-embolization syndrome, and neurological deficits including stroke and death.
Event or Problem Description
It was reported: during aneurysm embolization procedure the web device would not detach.There was a good connection with detacher as was indicated by the detacher.There was a detachment indication by detacher noise and subsequent red light but no change to device base.There was no change when attempting to abut the via catheter to the base of device to detach.They recaptured the web device, opened another similar size web device and completed the procedure.There was no patient impact or injury, and no intervention was performed.

• Brand Name: WEB
• Common Device Name: INTRASACCULAR FLOW DISRUPTION DEVICE
• Manufacturer (Section D): MICROVENTION INC; 35 enterprise; aliso viejo CA 92656
• Manufacturer (Section G): MICROVENTION INC; 35 enterprise; aliso viejo CA 92656
• Manufacturer Contact: terrence callahan ; 35 enterprise; aliso viejo, CA 92656 ; 7142478000
• MDR Report Key: 21465123
• Report Number: 2032493-2025-00170
• Device Sequence Number: 12971894
• Product Code: OPR
• UDI-Device Identifier: 00842429110805
• UDI-Public: (01)00842429110805(11)230607(17)260531(10)0000368226
• Combination Product (Y/N): N
• Initial Reporter State: VA
• Initial Reporter Country: US
• PMA/510(K) Number: P170032
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Health Professional,User Facility,Company Representative
• Initial Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date (Section B): 03/20/2025

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: 05/31/2026
• Device Model Number: W5-4.5-3-MVI-3
• Device Lot Number: 0000368226
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Date Returned to Manufacturer: 02/13/2025
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 02/06/2025
• Supplement Date Received by Manufacturer: 02/27/2025
• Initial Report FDA Received Date: 02/25/2025
• Supplement Report FDA Received Date: 03/21/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 06/07/2023
• Is the Device Labeled for Single Use? (Y/N): Yes
• Usage of Device: Initial
• Patient Sequence Number: 1
• Concomitant Medical Products and Therapy/Usage Dates: VIA CATHETER, DETAILS UNKNOWN.
• Patient Age: 48 YR
• Patient Sex: Female