The VDR®-4  s designed specifically for hospital use. The Volumetric Diffusive Respirator unit (VDR®-4) is a flow-regulated and time-cycled ventilator that provides high-frequency percussive ventilation (HFPV).

Get Help Locate a Distributor

This HFPV system supports both diffusive and convective flow by stacking breaths in cumulative subtidal volumes, allowing for air exchange, airway clearance, and lung recruitment for most hospital patient populations, neonatal to adult.  The VDR®-4 can be used to treat respiratory conditions including hypoxemia, hypercapnia, aspiration, smoke inhalation, and ARDS. This unit is paired with the Monitron® II Waveform Analyzer, which provides accurate, real-time visual waveform, pressures, and alarms, making the VDR®-4 a versatile tool for critical and intensive care respiratory ventilation.

Patients who may benefit include those with the following conditions:  

  • ARDS (Including H1N1)
  • Atelectasis
  • Pneumonia
  • Pre-ECMO patients
  • Burns
  • NICU patients 
  • PICU patients
  • Adult patients (including bariatric)
Pulmonary complications of:
  • Cystic Fibrosis
  • Alpha-1
  • SMA
  • ALS
  • Burns

Download Spec Sheet

  • Improves outcomes for patients on ECMO
  • Ventilates patients failing other modes of ventilation
  • Restores FRC and may reduce need for ECMO
  • Assists with weaning from ECMO
  • Improves Oxygenation and reduces PaCO2
  • Improves airway clearance (such as meconium)
  • May be used non-invasively, particularly in the NICU


  • Independent time controls
  • Demand CPAP
  • Biphasic ventilation
  • Additional lung recruitment tools available
  • Built-in Air O2 blender

How Can We Help?

Do you have a clinical support question, or need more information about our respiratory products? Please contact our Customer Support Team for more information.

iconContact Us