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Recall

Class II — Mevion Medical Systems, Inc.

Recalling firmMevion Medical Systems, Inc.
Registered facilityMEVION MEDICAL SYSTEMS, INC. (the firm's only registered facility)
ClassificationClass II
StatusTerminated
ReasonThe perforated screen that divides the inside of the process water tank has a very sharp edge across the top of the Heat Exchanger leading to potential injury for servicer.
ProductMEVION S250 Proton Radiation Treatment System; intended to deliver proton radiation treatment to patients
Quantity8 units
DistributionMO, NJ, OK, FL, OH, DC, Netherlands
Initiated2020-06-23
Classified2020-07-22
Terminated2020-12-09
Recall numberZ-2686-2020
InitiationVoluntary: Firm initiated

Source: U.S. FDA via openFDA (opens in a new tab) (device registration & enforcement). Data as of 2026-10-06. Verify this recall record at FDA → (opens in a new tab)

Cite this record

RegWarden. “Class II recall — Mevion Medical Systems, Inc. (Z-2686-2020).” Compiled from U.S. FDA public records (openFDA; FDA Data Dashboard). Data as of 2026-10-06. https://regwarden.com/recall/86028/

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