FDA Devices recall · Reported November 5, 2014
Proteus 235 Proton Therapy System for cancer treatment.
While the Proteus 235 is in the pencil beam scanning (PBS) treatment mode, on rare occasions, Low Level Radio Frequency (LLRF) pulsed dee voltage (i.e., voltage applied between tw…
Ion Beam Applications S.a. recalled Proteus 235 Proton Therapy System for cancer treatment. - a moderate-severity action.
Proteus 235 Proton Therapy System for cancer treatment. was recalled by Ion Beam Applications S.a. in November 5, 2014. Reason: While the Proteus 235 is in the pencil beam scanning (PBS) treatment mode, on rare occasions, Low Level Radio…. Check the official notice for the remedy. Verify recall #Z-0020-2015 with the FDA Devices before acting.
The recall
Ion Beam Applications S.a. issued this moderate-severity FDA Devices recall-While the Proteus 235 is in the pencil beam scanning (PBS) treatment mode, on rare occasions, Low Level Radio….
- Moderate
- severity level
- 8 units
- affected scope
- Class II
- classification
- November 5, 2014
- reported
Sourced from official FDA Devices enforcement records. Verify recall #Z-0020-2015 with the agency before acting. Full product description, hazard, remedy, and related recalls are below.
Recall Insight
This recall's affected scope, documented in the Recall Profile below, stays within a single-region or limited-distribution footprint. Distribution scope (see Distribution below) directly affects the consumer exposure window and determines whether a recall remains regional or escalates into a nationwide advisory.
Within the same product category the archive holds 6 closely related recalls, 6 from FDA Devices - clustering in a narrow category often points to a systemic quality-control or supplier issue rather than a one-off defect. Always verify the recall number against the official agency record before acting.
Medical Devices recalls over time
Where this recall sits in its category - 41,021 medical devices recalls on record
Of 88,244 recalls with an agency hazard classification, 19,068 are high severity, 64,652 moderate, and 4,524 low. A further 16,179 CPSC/NHTSA recalls have no agency class and are excluded from this split. This recall is classified moderate severity.
Counts reflect market size and reporting activity, not inherent danger, we do not rank products by risk from raw recall volume.
Product description
Proteus 235 Proton Therapy System for cancer treatment.
Reason for recall
While the Proteus 235 is in the pencil beam scanning (PBS) treatment mode, on rare occasions, Low Level Radio Frequency (LLRF) pulsed dee voltage (i.e., voltage applied between two electrodes in the cyclotron to accelerate protons) may generate a hot spot on a pencil beam position within a tumor, generating a dose that might exceed the prescribed dose on a single voxel.
Recall Profile
| Attribute | Value |
|---|---|
| Agency | U.S. Food and Drug Administration |
| Severity class | Moderate (Class II) |
| Status | Terminated |
| Recall number | Z-0020-2015 |
| Date reported | November 5, 2014 |
| Date initiated | March 27, 2014 |
| Recalling firm | Ion Beam Applications S.a. |
| Firm location | Louvain La Neuve, N/A |
| Affected scope | 8 |
| Distribution | Worldwide Distribution-USA (nationwide) including the states of PA, NJ, IL, WA, and TN, and the countries of Germany, Italy, and Czech Republic. |
Profile values are sourced directly from the official FDA Devices enforcement record. Source: U.S. Food and Drug Administration.
What to do with this recall
Match your product against the recall record, then act on the agency remedy.
- Check the recall number (Z-0020-2015) and product description against the item you own. Search the archive
- Confirm the current status with FDA Devices before acting, recall details can be updated.
- Follow the documented remedy (refund, replacement, repair, or disposal) rather than general advice. What to do next
This page summarizes the official FDA Devices record for research and awareness; it is not legal, medical, or safety advice. Verify with the issuing agency before acting.
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Nationwide recalls with similar severity or category timing
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Similar severity · nearest report date
Same archive severity grade (Moderate), closest by report date among other firms and states.
Similar Medical Devices · nearest report date
Same product category, closest by report date among other firms and states (deduped against the severity set).
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Methodology · Corrections · Archive as of August 2026