NKV-550 Series Ventilator System

Ventilator NKV-550

Treasure Every Breath

Nihon Kohden’s core philosophy inherent in the design of the NKV-550 is to Treasure Every Breath. Our focus is to provide clinically relevant innovations and solutions for patients requiring mechanical ventilation.

The NKV-550 Series Ventilator System is a neonatal through adult mechanical ventilator equipped with a comprehensive array of clinically proven modalities and features, the NKV-550 provides the clinician a customizable platform to help improve the patient's outcome while reducing hospital costs.


  • Adult, pediatric, and neonatal (tidal volumes down to 2ml).
  • Comprehensive modes and breath types.
  • Invasive ventilation, non-invasive ventilation, and O2 therapy.
  • Gentle Lung® package for lung protection applications.
  • Protective Control®​ for contagious disease applications and radiologic procedure applications.
  • Airway care apps (inline airway suction app, open airway suction app).
  • Built-in SpO2 and CO2 monitors.
  • Nihon Kohden connectivity (bedside and central monitors).
  • Auxiliary pressure monitor.

Seamless Care: Every Patient – Every Breath

The NKV-550 gives clinicians the tools to provide respiratory support for all patient sizes. Patients can be transitioned throughout the continuum of care quickly, between invasive or non-invasive ventilation and high flow oxygen therapy without changing equipment or breathing circuits.


  • Recruitability Assessment App: helps you determine if the patient lungs are recruitable.

  • Recruitment Maneuver App: may be used to automatically perform a lung recruitment maneuver using the stepwise increase in PEEP technique.

  • PEEP Titration App: will decrease PEEP in a stepwise manner. At the end of the maneuver, the app will indicate the lowest PEEP that provides the highest lung compliance.

  • Transpulmonary Pressure App: monitors the transpulmonary pressure to help individualize a lung-protective treatment strategy.

  • Integrated Monitoring: cap-ONE and BluPRO.




Seamless Care

With the NKV-550, patients can be transitioned seamlessly between invasive and non-invasive ventilation and high flow oxygen therapy and are designed for use with all patient sizes.

Lung Protection

The NKV-550 is created on the lung-protective approach to ventilation and features the Gentle Lung® Suite of applications to provide clinically relevant, easy to use tools for the open-lung approach to ventilation.

Protective Control

Protective Control provides the clinician a safe, fully functional second user interface to easily implement needed ventilator setting changes when treating patients with contagious diseases or who are undergoing a radiologic procedure while remaining within sight of the clinician.



The NKV-550 can transfer critical patient ventilation data to the hospital information system for charting and/or data analytics purposes.

Workflow Optimization

The NKV-550 offers customizable screen configurations enabling the ventilator to fit into your paradigm rather than require you to adapt to it. Our App-based design provides guided processes to help create a more streamlined, systematic way for clinicians to optimize the care of their ventilated patients.

Reduced Cost of Ownership

The NKV-550 requires simple, low-cost preventative maintenance every two years.

Work Effectiveness

  • Recruitability assessment.
  • Recruitment maneuver.
  • PEEP titration.
  • Transpulmonary pressure.
  • Volumetric capnography.
  • Spontaneous breathing trial.
  • SpO2 monitoring.
  • End-tidal CO2 monitoring.
  • Video and screen capture.
  • NIF/PiMax maneuver.
  • P0.1 measurement.
  • Low-flow PV maneuver.


  • Secondary user interface.
  • Aerogen USB nebulizer.
  • Integrated medical air compressor.
  • Pendant or shelf mount.
  • Rolling trolley.
  • Gas cylinder holder for intrahospital transport.



  • Two (2) USB ports.
  • Nurse call.
  • RS-232.
  • Physiologic monitors.


  • 100 – 240V 50/50 Hz A/C.
  • 50-minute internal battery*.
  • 130-minute hot-swappable backup battery.

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