Incident · Recall
Zimmer Biomet ROSA ONE Brain 3.1 Class I recall: software could drive instruments to a wrong trajectory
Class I recall (urgent correction Sep 22 2021; FDA Class I designation Nov 2021): on reboot after an unexpected shutdown following patient registration, selecting 'clear the robotic arm' and running empty-device calibration could drive the device to an incorrect trajectory, sending a tool to the wrong brain location (stroke/serious-injury risk). 119 US devices; 3 complaints (one inaccurate electrode placement); no injuries reported. Software corrective update rolled out 2022.
Occurred 2021-09-22 · ROSA · Zimmer Biomet
How to read this record
Incident records on DEPLOY are compiled from public sources (regulatory filings, news reports, and operator disclosures) and reflect what has been reported and tracked to date. They are not legal findings, determinations of fault, or safety ratings, and may be updated as new information is verified. See the sources below for the underlying references.Machine-readable surfaces
- Markdown mirror: /incidents/rosa-one-brain-trajectory-recall-2021.md
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Outcomes (1)
- regulatory actionverified
Revision history (1)
- 2026-06-05 · outcome_class
Outcome rows carry verification_posture independently. Revision events carry basis (verified_court_filing, verified_insurance, reported_press, estimate, undisclosed). The framework records outcomes only when verifiable; absence is honest absence, not a claim of no-impact.
Sources (2)
Common questions
- What happened in Zimmer Biomet ROSA ONE Brain 3.1 Class I recall: software could drive instruments to a wrong trajectory?
- Class I recall (urgent correction Sep 22 2021; FDA Class I designation Nov 2021): on reboot after an unexpected shutdown following patient registration, selecting 'clear the robotic arm' and running empty-device calibration could drive the device to an incorrect trajectory, sending a tool to the wrong brain location (stroke/serious-injury risk). 119 US devices; 3 complaints (one inaccurate electrode placement); no injuries reported. Software corrective update rolled out 2022.
- When did this incident occur?
- The incident is recorded as occurring on September 22, 2021 on the DEPLOY registry. The date reflects the underlying real-world event, not the registry record's creation date.
- What robot was involved in Zimmer Biomet ROSA ONE Brain 3.1 Class I recall: software could drive instruments to a wrong trajectory?
- ROSA by Zimmer Biomet is the recorded robot involved in this incident.
- Has anyone responded to Zimmer Biomet ROSA ONE Brain 3.1 Class I recall: software could drive instruments to a wrong trajectory?
- No responses to this incident are recorded on the DEPLOY registry. Operators, manufacturers, or affected parties can submit responses to the editorial team; absence is not a guarantee no response was issued.
- What is the current status of Zimmer Biomet ROSA ONE Brain 3.1 Class I recall: software could drive instruments to a wrong trajectory?
- This incident is an active record on the DEPLOY registry; no retraction or correction has been issued.
Methodology: Verified · 2 sources (no primary) · last reviewed 2026-06-24
Verification posture
Verified
Low confidence
Review state
Stable
Last reviewed 2026-06-24
Sources by quality tier
- 2
- unclassified
- Unclassified source
The framework is documented at /methodology. Corrections at /corrections. Reviewer: DEPLOY editorial team.
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Canonical ID 186fb155-6c2e-4812-907c-fd241200cad9