MAUDE Adverse Event Report: MEDOS INTERNATIONAL SARL CERENOVUS ENTERPRISE; INTRACRANIAL NEUROVASCULAR STENT

Catalog Number	ENC452812
Medical Device Problem Codes	Premature Activation (1484); Failure to Advance (2524)
Health Effect - Clinical Code	No Clinical Signs, Symptoms or Conditions (4582)
Date of Event	07/15/2025
Type of Reportable Event	Malfunction
Additional Manufacturer Narrative
Manufacturer ref#: (b)(4) information regarding patient weight, height, medical history, race, and ethnicity was not reported.Section e1.Initial reporter phone: (b)(6).Section h3 - the device is available to be returned for evaluation and testing.However, it has not been received to date.If the device returns, a device investigation will be performed.The company is seeking this information through the event investigation.This report is being submitted pursuant to the provisions of 21 cfr, part 803 (and/or part 4, as applicable).This report may be based on information which has not been investigated or verified prior to the required reporting date.This report does not reflect a conclusion by cerenovus, or its employees that the report constitutes an admission that the product, cerenovus, or its employees caused or contributed to the potential event described in this report.If information is obtained that was not available for the initial report, a follow-up report will be filed as appropriate.
Event or Problem Description
A health care professional reported that during the endovascular embolization, a 4.5x28mm 12 mm dw tip enterprise vascular reconstruction device (enc452812, 8640237) impeded in proximal of the prowler select plus 150/5cm microcatheter (606s255x, lot unknown) and could not advance any more.The doctor tried to retract the stent, the stent was half released automatically in y connector and the stent was found detached from the delivery wire in the y connector.The doctor removed the microcatheter (mc) and stent from the patient and switched new devices to complete the surgery.
Additional Manufacturer Narrative
Manufacturer ref# (b)(4).Updated sections on this medwatch: b4, b5, g3, g6, h2, h3 and h11.Section b5: additional event information received on 21-jul-2025 indicated that the microcatheter did not kink/bent.There was no excessive force used with the devices.A supplemental report will be submitted if new facts arise which materially alter information submitted in a previous mdr report.
Additional Manufacturer Narrative
Manufacturer ref# (b)(4).Updated sections on this medwatch: b4, d9, g3, g6, h2, h3, h6 and h11.Complaint conclusion: a health care professional reported that during the endovascular embolization, a 4.5x28mm 12 mm dw tip enterprise vascular reconstruction device ((b)(6), 8640237) impeded in proximal of the prowler select plus 150/5cm microcatheter (606s255x, lot unknown) and could not advance any more.The doctor tried to retract the stent; the stent was half released automatically in y connector and the stent was found detached from the delivery wire in the y connector.The doctor removed the microcatheter (mc) and stent from the patient and switched new devices to complete the surgery.Additional event information received on 21-jul-2025 indicated that the microcatheter did not kink/bent.There was no excessive force used with the devices.The device was returned to j&j medtech for further evaluation.A non-sterile 4.5x28mm 12 mm dw tip enterprise was received contained in the decontamination pouch.Upon receiving the device, visual inspection was performed, and the stent was found detached inside of the involved microcatheter [ip-02451136].No appearance of damages was observed.The delivery wire and the introducer components were returned in good condition.The stent was removed without difficulties.The stent was inspected under a microscope, and no damage was found (i.E., no kinks, no bents, or broken struts).Both distal ends can be noted completely flared.The issue documented in the complaint regarding the stent being impeded in the proximal end of the microcatheter could not be evaluated through functional test since the stent became detached during the procedure; however, this condition suggests that the enterprise introducer was not fully seated in the hub of the microcatheter, causing the stent to expand in the microcatheter's hub, causing the resistance and resulting in the stent component being unable to advance further, where push/pull force was applied sufficiently to disengage the stent from the delivery wire.It is possible that clinical and procedural factors, including device manipulation, may have contributed to the reported failure.There is no indication that the issues reported in the complaint result from a defect inherently related to the device.Based on this, the customer complaint was confirmed.Lake region medical reviewed the device history records relative to the manufacturing, inspecting and packaging of the lot 8640237.The history records indicate this product was final inspection tested at lake region medical and was determined to be acceptable.As part of the j&j medtech quality process, all devices are manufactured, inspected, and released to approved specifications.Since there was no evidence to suggest the event was related to a manufacturing or design issue, no capa activity is required at this time.It should be noted that multiple factors could cause product failure.The instructions for use (ifu) do contain the following recommendations: ¿ the introducer must be properly engaged with the infusion catheter hub to enable stent introduction into the infusion catheter.¿ do not apply undue force if resistance is encountered at any point during stent manipulation.Withdraw the unit and advance to a new one.¿ if resistance is felt while recapturing the stent, do not continue to recapture the device.Withdraw the infusion catheter slightly to unsheathe the stent (without exceeding the recapture limit), and then attempt to recapture the stent again.As part of the post market surveillance program, information from this complaint is trended to identify statistical signals for consideration of further correction action.Since there was no evidence to suggest the event was related to a manufacturing or design issue, no corrective actions will be taken at this time.A supplemental report will be submitted if new facts arise which materially alter information submitted in a previous mdr report.

• Brand Name: CERENOVUS ENTERPRISE
• Common Device Name: INTRACRANIAL NEUROVASCULAR STENT
• Manufacturer (Section D): MEDOS INTERNATIONAL SARL; chemin-blanc 38; le locle neuchatel CH-24 00; SZ CH-2400
• Manufacturer (Section G): CERENOVUS INC; 325 paramount dr; raynham MA 02767
• Manufacturer Contact: henry boden ; 31 technology dr; irvine, CA 92618 ; 9497882078
• MDR Report Key: 22530189
• Report Number: 3008114965-2025-00743
• Device Sequence Number: 17994639
• Product Code: NJE
• UDI-Device Identifier: 10886704044031
• UDI-Public: (01)10886704044031(17)250928(10)8640237
• Combination Product (Y/N): N
• Initial Reporter Country: CH
• PMA/510(K) Number: H60001
• Number of Events Summarized: 1
• Summary Report (Y/N): N
• Serviced by Third Party (Y/N): Unknown
• Reporter Type: Manufacturer
• Report Source: Foreign,Health Professional,Company Representative
• Initial Reporter Occupation: Other Health Care Professional
• Type of Report: Initial,Followup,Followup
• Report Date (Section B): 08/21/2025

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: 09/28/2025
• Device Catalogue Number: ENC452812
• Device Lot Number: 8640237
• Was Device Available for Evaluation?: Device Returned to Manufacturer
• Is the Reporter a Health Professional?: Yes
• Type of Report(Section G): Thirty-Day
• Initial Date Received by Manufacturer: 07/15/2025
• Supplement Date Received by Manufacturer: 07/21/2025; 08/07/2025
• Initial Report FDA Received Date: 07/17/2025
• Supplement Report FDA Received Date: 08/05/2025; 08/21/2025
• Was Device Evaluated by Manufacturer? (Y/N): Yes
• Date Device Manufactured: 10/05/2023
• Is the Device Labeled for Single Use? (Y/N): Yes
• Is This a Single-Use Device that was Reprocessed and Reused on a Patient? (Y/N): No
• Usage of Device: Initial
• Patient Sequence Number: 1
• Concomitant Medical Products and Therapy/Usage Dates: PROWLER SELECT PLUS 150/5CM.
• Patient Sex: Unknown