MEVION S250 Radiation therapy system

FDA Device Recall #Z-0767-2016 — Class II — November 18, 2015

Recall Summary

Recall Number Z-0767-2016
Classification Class II — Moderate risk
Date Initiated November 18, 2015
Status Terminated
Voluntary Voluntary: Firm initiated

Recalling Firm

Firm Mevion Medical Systems, Inc.
Location Littleton, MA
Product Type Devices
Quantity 4

Product Description

MEVION S250 Radiation therapy system

Reason for Recall

The treatment table positioning belt can slip gear positions, resulting in deviation of patient setup and treatment positions from the time of slippage until the discovery of slippage and the halting of treatment.

Distribution Pattern

US nationwide distribution including FL, NJ, OK, and MO.

Lot / Code Information

Manufacturing Lot or Serial Number: S250-0004

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-0485-2021 Class II MEVION S250i, MEVION S250; Proton Radiation Tre... Oct 19, 2020
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

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.