MAUDE Adverse Event Report: MICROVENTION, INC. WEB SL; INTRASACCULAR DEVICES

Model Number W5-5-2-MVI

Device Problem Difficult or Delayed Separation (4044)

Patient Problem No Clinical Signs, Symptoms or Conditions (4582)

Event Date 11/10/2023

Event Type  malfunction  

Manufacturer Narrative

A search for non-conformances associated with this part/lot number combination did not reveal any production-related issues relevant to the complaint that occurred during manufacturing of the device.The device was implanted and therefore not available for return and investigation by the manufacturer.However, imaging was provided.The investigation is ongoing.Upon completion of the investigation, a supplemental mdr will be submitted.H3 other text : device implanted.

Event Description

It was reported, the physician wanted to implant a web 5x2 for an acute sab.The web fitted perfectly.However, it could not be detached.With the help of a balloon catheter, the physician was able to manipulate the web so that it came off.The event had no influence on the patient outcome.

Manufacturer Narrative

A review of the operative report dated 10-11-2023 was performed.Data review indicates that the patient was treated for an acom aneurysm on 12023.The event occurred during the performance of the procedure when a web sl 17 5x2 mm device was selected for deployment and after the thermo-electrical detachment process, the detachment was determined to be not completely successful which required a scepter c 4 x 10 mm remodeling balloon which was placed over the aneurysm neck.This was successful for assisting detachment of the web device without any problems.The outcome associated with this event was reported as successful endovascular treatment of a complex double lobulated arteria communicans anterior aneurysm with the help of 2 intrasaccular nitinol implants (web 17 sl 5x2 mm and contour 7 mm), a scepter c remodeling balloon was required.A single radiographic image was also provided for review.It is a cropped ap roadmap of the left ica, with contrast.It is not labeled as to date or time.It shows a bilobed acom aneurysm with two equal-sized lobes measuring 2.5 ¿ 3 mm.One lobe projects superiorly, the other one inferiorly.A web is seen in the inferior lobe.A scepter balloon is inflated in the acom across the neck of the aneurysms.The tip of the catheter and guidewire are in the contralateral (right) a2.This image does not explain why the web was difficult to detach as described in the reported event.Without the return and physical evaluation of the device, the investigation cannot definitively determine if a condition existed that would have caused or contributed to the reported event.Visual analysis: a visual inspection of the device captured in this file could not be performed as a physical device was not returned for evaluation.Investigation findings: without the return and physical evaluation of the device, the investigation cannot definitively determine if a condition existed that would have caused or contributed to the reported event.Based on a review of the device¿s risk documentation, the reported event did not indicate there were any potential or new manufacturing, design, quality, or other systemic issues, or non-conformances.The complaint code is monitored through the trending process; corrective action is determined, as needed, through this process.Investigations of historic complaint files with similar complaint category coding are recorded in the complaint handling system; without the ability to perform and analysis of the device, this investigation cannot identify with certainty any potential root causes.Batch review: a search for non-conformances associated with this part/lot number combination did not reveal any production-related issues relevant to the complaint that occurred during manufacturing of the device.Complaint system review: there are no similar complaints based on the complaint category regarding this batch number from the last two years recorded in the complaint system at the time of this investigation.Ifu review (additional information can be found in the ifu): potential complications potential complications 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.Warnings and precautions: ¿ the web aneurysm embolization system is intended for single use only.The detachment control device is intended to be used for one patient.Do not resterilize and/or reuse the device.Reuse and/or resterilization can increase risk of infection, cause a pyrogenic response or other life threatening complications.Reuse and/or resterilization can degrade product performance, leading to device malfunction.Dispose of all devices in accordance with applicable hospital, administrative and/or local government policy.¿ advance and retract the device slowly.Do not advance the delivery device with excessive force.Determine the cause of any unusual resistance.Remove the device if excessive friction is noted and check for damage.¿ do not rotate the delivery device during or after delivery of the embolization device.Rotating the device may result in damage or premature detachment.¿ the embolization device cannot be detached with any other power source other than a microvention inc.Detachment control device.Ensure that at least two detachment control devices are available before initiating an embolization procedure.Procedure detachment of the device: 31.The detachment control device is pre-loaded with batteries and will activate when the delivery device is properly connected.32.Verify that the rhv is firmly locked around the delivery device before attaching the detachment control device to ensure that the embolization device does not move during the connection process.33.Ensure that the delivery device gold connectors are clean and free from blood or contrast.If necessary, wipe the connectors with sterile water and dry before connecting.34.Insert the proximal end of the delivery device into the detachment control device.When the delivery device is properly connected, the light will flash green and an intermittent tone will be heard.35.Verify the embolization device position before pressing the detachment button.36.Push the detachment button.During firing, the light should be solid green and the beep should be continuous.37.Verify detachment by first loosening the rhv valve, then pulling back slowly on the delivery device and verifying that there is not embolization device movement.If the embolization device does not detach, push the detachment button again.If the device is still not detached, obtain a new detachment control device and attempt detachment up to two additional times.If it does not detach, remove the delivery device.38.Verify the position of the embolization device angiographically through the guide catheter.39.Prior to removing the microcatheter from the treatment site, place an appropriately sized guidewire completely through the microcatheter lumen to ensure that no part of the embolization device remains within the microcatheter.H3 other text : device implanted but imaging was provided.

Event Description

It was reported, the physician wanted to implant a web 5x2 for an acute sab.The web fitted perfectly.However, it could not be detached.With the help of a balloon catheter, the physician was able to manipulate the web so that it came off.The event had no influence on the patient outcome.

• Brand Name: WEB SL
• Type of Device: INTRASACCULAR DEVICES
• Manufacturer (Section D): MICROVENTION, INC.; 35 enterprise; aliso viejo CA 92656
• Manufacturer Contact: terrence callahan ; 35 enterprise; aliso viejo, CA 92656 ; 7142478000
• MDR Report Key: 18263093
• MDR Text Key: 329667959
• Report Number: 2032493-2023-01090
• Device Sequence Number: 1
• Product Code: OPR
• UDI-Device Identifier: 00842429102107
• UDI-Public: (01)00842429102107(11)230522(17)280430(10)0000364875
• Combination Product (y/n): N
• Reporter Country Code: US
• PMA/PMN Number: P170032
• Number of Events Reported: 1
• Summary Report (Y/N): N
• Report Source: Manufacturer
• Source Type: Foreign,Health Professional,User Facility,Company Representative
• Reporter Occupation: Physician
• Type of Report: Initial,Followup
• Report Date: 01/30/2024

1 Device was Involved in the Event

1 Patient was Involved in the Event

• Date FDA Received: 12/04/2023
• Is this an Adverse Event Report?: No
• Is this a Product Problem Report?: Yes
• Device Operator: Health Professional
• Device Model Number: W5-5-2-MVI
• Device Lot Number: 0000364875
• Was Device Available for Evaluation?: No
• Is the Reporter a Health Professional?: Yes
• Was the Report Sent to FDA?: No
• Date Manufacturer Received: 01/11/2023
• Was Device Evaluated by Manufacturer?: Device Not Returned to Manufacturer
• Date Device Manufactured: 05/22/2023
• Is the Device Single Use?: Yes
• Is This a Reprocessed and Reused Single-Use Device?: No
• Type of Device Usage: Initial
• Patient Sequence Number: 1
• Treatment: WDC WEB DETACHER.