Nihon Kohden NKV-550-SRecalls & reported problems
Nihon Kohden Orangemed, Inc. · The Nihon Kohden NKV-550-S is a continuous use ventilator that is designed to meet the gas delivery and performance requirements for pediatric through adult patients. The NKV-550 Series Ventilator System is intended to provide continuous ventilation using medical oxygen and external sources of compressed medical air to deliver oxygen concentrations of 21% to 100%. The ventilator design is comprised of two major components, the Breath Delivery Unit (BDU) and the Graphic User Interface (GUI). · Class 2
Data updated Oct 18, 2026 from official FDA records · Editorial policy
- Adverse event reports
- 1
- Deaths reported
- 0
- Injuries reported
- 0
- Recalls naming it
- 0
Summary
The FDA's MAUDE database contains 1 adverse event report that list this exact device (DI 00843685100005), received between Sep 29, 2026 and Sep 29, 2026 — classified as 1 malfunction.
The most frequently reported specific device problem is “Inappropriate or Unexpected Reset” (1 report).
1 other recall cover devices cleared under the same FDA submission (K181695, K192307); they may or may not involve this specific model.
Reports come from manufacturers, hospitals and patients and are not verified by the FDA. A report does not prove the device caused the event, and counts can't be used to compare devices or estimate failure rates. What reports can and can't tell you · How this data works · Data updated Oct 18, 2026.
Reports received per month
Most reported problems
Device problems
- Inappropriate or Unexpected Reset1
Patient problems
- No Clinical Signs, Symptoms or Conditions1
Recent adverse event reports
The 1 most recent of 1 reports, in the reporter's own words as published by the FDA.
MalfunctionSep 29, 2026Inappropriate or Unexpected Reset
Patient problems: No Clinical Signs, Symptoms or Conditions
MAUDE report 50940495 ↗
Recalls under the same FDA submission
These recalls involve devices cleared under K181695, K192307. One submission often covers many models, so check the product and lot details in each record.
- Z-2435-2021 · Jul 20, 2021 · TerminatedNihon Kohden NKV-550 Ventilator, REF: NKV-550-U, CE 0344, UDI: (01) 00843685100012 The Nihon Kohden NKV-550 Series Ventilator System is intended to provide continuous ventilation
Other Ventilator, Continuous, Facility Use devices
- Trilogy Trilogy100 Ventilator, United StatesRespironics, Inc. · VENTILATOR, CONTINUOUS, FACILITY USE92 deaths8,161 reports
- Trilogy Evo Trilogy Evo, USARespironics, Inc. · Ventilator, continuous, facility use6 recalls50 deaths4,393 reports
- Trilogy 100 Trilogy 100 W/ Bluetooth, USARespironics, Inc. · VENTILATOR, CONTINUOUS, FACILITY USE65 deaths4,569 reports
- CARESCAPE R860Datex-Ohmeda Inc · VENTILATOR, CONTINUOUS, FACILITY USE1 recall1 death4,346 reports
- HAMILTON-C1 161001Hamilton Medical AG · Ventilator, Continuous, Facility Use2 recalls12 deaths1,849 reports
- Trilogy Trilogy O2 Ventilator JapanRespironics, Inc. · VENTILATOR, CONTINUOUS, FACILITY USE7 deaths1,900 reports
- Trilogy Trilogy 202 Ventilator InternationalRespironics, Inc. · VENTILATOR, CONTINUOUS, FACILITY USE11 deaths1,564 reports
- HAMILTON-C6 160021Hamilton Medical AG · Ventilator, Continuous, Facility Use5 recalls10 deaths1,175 reports
Sources and updates
- Device record: FDA GUDID, file dated Oct 13, 2026 · View this device in AccessGUDID ↗
- Adverse event reports: FDA MAUDE, file dated Oct 14, 2026 · each report above links to its original FDA record
- Recalls: FDA Medical Device Recalls, file dated Oct 16, 2026
- Page last rebuilt: Oct 18, 2026. Data downloaded through openFDA, which notes it is not validated for clinical or regulatory use.
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