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BubbleCPAP® nCPAP systemMedin

Easy application

In the case of the BubbleCPAP, positive pressure is applied to the airways during inspiration and expiration. Pressure is generated through the expired breathing gas being directed into a water container (bubbler). A dip tube (surge chamber) is on the end of the expiratory ventilation tube. The level of the CPAP pressure depends on how deep the end of the cylinder is immersed into the sterile water.


Medin BubbleCPAP with HAMILTON-H900

  • Classical nCPAP system – used worldwide
  • All the advantages of nCPAP therapy
  • Economical and universally applicable
  • Easy to use


This simple CPAP system was used for the first time in the early 1970s (Gregory 1971) and it has been used worldwide since then. In 1987, it was demonstrated (Avery 1987) that the incidence of BPD (bronchopulmonary dysplasia) can be reduced using BubbleCPAP. As a result, the system presumably became the most frequently used CPAP application by this time at the latest.


It consists only of:

  • Air/oxygen blender: medinBLENDER
  • Bubble bottle for CPAP pressures of 0 to 9.5 cm H2O
  • Breathing circuit: 2-tube system 5801 HAMILTON-H900
  • Respiratory gas humidifier HAMILTON-H900
  • nCPAP interface: medin Miniflow® with masks and prongs


The mechanisms of action of the CPAP pressure are:

  • Holding the airways open through positive pressure
  • Increasing the FRC (functional residual capacity)
  • Increasing the respiratory drive through improved oxygenation
  • Reducing the breathing effort