CLASS II Device recall · Reported 2 May 2018 · FDA Enforcement Report

Proteus 235, ProteusPLUS or Proteus ONE produces recalled

Ion Beam Applications is recalling Proteus 235, ProteusPLUS or Proteus ONE produces and delivers a proton beam for the, distributed in Illinois, New Jersey, Virginia, Washington. The recall was initiated on 26 Jan 2018 and the FDA has classified it as Class II.

Check your package

Lot, batch or date codesAffected version: PTS-7.X.X and PTS-8.X.X Serial numbers PAT.107 (EU); PAT.108, PAT.112, PAT.113, PAT.116 (US)
Quantity recalled5

Stop using the device if the notice says to, and contact the manufacturer or your healthcare provider for the correction or replacement.

Recall details

Recall number
Z-1477-2018
FDA event ID
79605
Recalling firm
Ion Beam Applications, Louvain La Neuve, N/A
Classification
Class II
Status
Terminated
Recall initiated
26 Jan 2018
FDA classified
20 Apr 2018
Reported
2 May 2018
Type
Voluntary: Firm initiated
Customers notified by
Two or more of the following: Email, Fax, Letter, Press Release, Telephone, Visit
Reason category
Other Reasons

Timeline

26 Jan 2018Recall initiated by company
20 Apr 2018Classified by FDA+84 days
2 May 2018Published in enforcement report+12 days

Companies usually start a recall weeks before the FDA classifies and publishes it; the gap above is that lag.

Reason for recall

When switching from Pencil Beam Scanning treatment mode to Uniform Scanning treatment mode, the tuning setpoints of the scanning magnets are not always taken into account when the proton beam is requested. The mismatch between the setpoint and feedback leads to an error message. Depending on user action, two scenarios are possible: 1. The user resumes the treatment field without analyzing the cause for the error message. This may lead to under-irradiation. 2. The user reboots the Scanning Magnets Power Supply Electronic Unit. This may lead to delay in patient treatment and the patient may need to be re-aligned, which leads to an additional X-ray dose.

Product as listed by the FDA

Proteus 235, ProteusPLUS or Proteus ONE produces and delivers a proton beam for the treatment of patients with localized tumors and other conditions susceptible to treatment by radiation.

Where it was distributed

Consignees in four states: VA, IL, NJ, and WA. One consignee located in Germany.

IllinoisNew JerseyVirginiaWashington

Questions about this recall

Why was it recalled?

When switching from Pencil Beam Scanning treatment mode to Uniform Scanning treatment mode, the tuning setpoints of the scanning magnets are not always taken into account when the proton beam is requested. The mismatch between the setpoint and feedback leads to an error message. Depending on user action, two scenarios are possible: 1. The user resumes the treatment field without analyzing the cause for the error message. This may lead to under-irradiation. 2. The user reboots the Scanning Magnets Power Supply Electronic Unit. This may lead to delay in patient treatment and the patient may need to be re-aligned, which leads to an additional X-ray dose.

Which lots are affected?

Affected version: PTS-7.X.X and PTS-8.X.X Serial numbers PAT.107 (EU); PAT.108, PAT.112, PAT.113, PAT.116 (US)

Where was it sold?

Consignees in four states: VA, IL, NJ, and WA. One consignee located in Germany.

What should I do if I have it?

Stop using the device if the notice says to, and contact the manufacturer or your healthcare provider for the correction or replacement.

What does Class II mean?

Class II means the product may cause temporary or medically reversible health problems, or the probability of serious harm is remote.

Read the official FDA notice · Source record retrieved 26 Sep 2026. The FDA describes openFDA data as unvalidated; the official notice takes precedence. This page reports the record and gives no medical advice.

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