• Protect every breath


    The S9 VPAP™ ST-A with intelligent Volume-Assured Pressure Support (iVAPS) offers an intelligent option for non-invasive ventilation for patients. Learn more about iVAPS.

    Evidence from a recent study conducted on patients naive to non-invasive ventilation indicated that when treated with iVAPS, they adhered to therapy for 60 minutes longer (per session) than when treated with standard pressure support (PS) modes.1

    60 Minutes More study.

    S9 VPAP ST-A with iVAPS support Learn more about S9 Series

Intelligent, personalised and automatic


Key features

  • iVAPS targets alveolar ventilation for stable gas exchange in a variety of breathing conditions
  • Includes a Learn Targets mode to make it easier to set up with minimal respiratory expertise required
  • Applies intelligent backup rate (iBR) only when needed, maximising spontaneous breathing while providing a safety net
  • Includes Vsync leak compensation and TiControl™ to significantly improve patient-ventilator synchrony

What sets the S9 VPAP ST-A apart?

  • High performance - pressures to 30 cmH2O allow you to treat the full range of NIV patients with a small, portable device
  • Paediatric clearance - cleared to treat paediatric patients weighing more than >13 kg (30 lb) and available in a child-friendly design. iVAPS is cleared for patients weighing more than 30 kg+ (66 lb+)
  • Added security - configurable audio and visual alarms

Seamless from hospital to home

For patients treated on ResMed's AstralTM or StellarTM in a hospital setting, ResMed VPAPTM devices provide a seamless transition to successful treatment in the home on proven ResMed technologies.


  • 01

    Jaye et al. Eur Respir J 2012

How to buy

Please contact our Customer Service department or your local representative for more information on obtaining ResMed products.

More products

S9 bilevel with backup rate provides exceptional patient-ventilator synchrony.

The S9 VPAP ST-A is a non-invasive ventilator that delivers advanced therapy management and monitoring.

S9 VPAP ST with iVAPS is an intelligent, personalised non-invasive ventilation device that provides the security of a back-up rate in hospital or at home.