RegWardenFDA facility compliance records
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
StatusOngoing
ReasonMalfunction of the hand pendant controlling movement of the therapy couch and nozzle may result in unintentional motion. Patient injury is possible if they come in contact with the nozzle or other objects in the treatment room.
ProductMevion S250 and S250i Proton Therapy Systems hand pendant (P/N 10263 or P/N 37808)
Quantity39 (36 US, 3 OUS)
DistributionWorldwide distribution - US Nationwide distribution in the states of FL, MO, NJ, OH, OK, UT, DC and the country of Netherlands.
Initiated2022-02-01
Classified2022-03-25
Recall numberZ-0827-2022
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-0827-2022).” Compiled from U.S. FDA public records (openFDA; FDA Data Dashboard). Data as of 2026-10-06. https://regwarden.com/recall/89758/

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