MEVION S250i, MEVION S250; Proton Radiation Treatment System - Product Usage: intended to deliver...

FDA Device Recall #Z-0485-2021 — Class II — October 19, 2020

Recall Summary

Recall Number Z-0485-2021
Classification Class II — Moderate risk
Date Initiated October 19, 2020
Status Terminated
Voluntary Voluntary: Firm initiated

Recalling Firm

Firm Mevion Medical Systems, Inc.
Location Littleton, MA
Product Type Devices
Quantity 8 units

Product Description

MEVION S250i, MEVION S250; Proton Radiation Treatment System - Product Usage: intended to deliver proton radiation treatment to patients with localized tumors or any other conditions susceptible to treatment by radiation

Reason for Recall

Treatment beam information disappears on Treatment Console screen while beam delivery continues potential for harm to a patient could occur

Distribution Pattern

Worldwide distribution - US Nationwide distribution including in the states of DC, FL, MO, NJ, OK and the country of Netherlands.

Lot / Code Information

Serial Numbers: MEVION S250-0001 MEVION S250-0002 MEVION S250-0003 MEVION S250-0004 MEVION S250-0005 MEVION S250-0006 MEVION S250-0007 MEVION S250-0008 UDI: 01)00864366000100 (11) 131209 (01)00864366000100 (11)150526 (01)00864366000100 (11)150113 (01)00864366000100 (11)150430 (01)00864366000100 (11)160127 (01)00864366000100 (11)160603 (01)00864366000124 (11) 180220 (01)00864366000124 (11) 181219

Other Recalls from Mevion Medical Systems, Inc.

Recall # Classification Product Date
Z-0827-2022 Class II Mevion S250 and S250i Proton Therapy Systems ha... Feb 1, 2022
Z-2686-2020 Class II MEVION S250 Proton Radiation Treatment System; ... Jun 23, 2020
Z-2406-2020 Class II MEVION S250i, MEVION S250; Proton Radiation Tre... May 15, 2020
Z-0705-2019 Class II MEVION S250i Oct 1, 2018
Z-2746-2018 Class II MEVION S250/MEVION S250i Proton Beam Radiation ... Jun 29, 2018

Frequently Asked Questions

Contact your healthcare provider and the device manufacturer immediately. Check whether your specific model number and lot number are included in the recall scope. For external devices, stop using the affected product and arrange a replacement. For implanted devices, do not panic — removal is typically not required unless the risk assessment clearly indicates it. Your physician will guide you based on your individual clinical situation and the FDA's recommended actions. Report any adverse effects you may have experienced to FDA MedWatch at 1-800-FDA-1088.

Class I recalls indicate a reasonable probability of serious adverse health consequences or death from the defect. Class II recalls involve products that may cause temporary or medically reversible adverse health consequences, or where serious consequences are remote. Class III recalls cover products not likely to cause any adverse health consequences, typically involving technical regulatory violations. The classification guides urgency — Class I recalls require immediate action, while Class III may simply involve returning a product or acknowledging a labeling change. Always read the specific recall notice for recommended patient actions.

Report problems with medical devices to the FDA through MedWatch at 1-800-FDA-1088 or online at FDA.gov/safety/medwatch. Healthcare facilities are required by law to report device-related serious injuries and deaths. Patients and consumers can also report voluntarily. Include the device name, manufacturer, model number, and a description of the problem and any patient outcome. Reports from patients and clinicians help the FDA identify emerging safety signals and may trigger investigations that lead to recalls of dangerous devices.

What Should You Do?

Stop using this device if you are affected by this recall. Contact your healthcare provider and the manufacturer immediately for guidance. Report adverse events to FDA MedWatch.