Negavent – Pegaso Vent

Traditional respiratory system still having an effective role

Negative Pressure Ventilation

Negative Pressure Ventilation is still an effective method of non-invasive external ventilation and represents a valid alternative to traditional ventilation methods.

It works in the same manner as natural breathing as it consists of both Inspiratory and Expiratory phases. Both phases are performed through a Negative Pressure Ventilator and specific accessories to be connected to the latter, such as a Cuirass or a Poncho amongh others.

The ventilator firstly applies a negative pressure forcing the diaphragm moves downwards while the rib muscles pull the ribs out expanding the chest: this process expands the lungs and generates a lower pressure inside the chest cavity (Inspiratory Phase); negative, in fact, means that the pressure decreases below normal atmospheric level, causing air to be sucked into the airways and the lungs. The ventilator then switches to positive pressure and forces air in the chamber so that the chest will be compressed and the lungs will exhale, although the exhalation can also be passive through the ambient, which is often sufficient to deflate the lungs.

This technique can often replace invasive ventilation: this increases the patient’s comfort and, moreover, reduces the risk of side-effects normally associated to other ventilation methods.

Although representing a traditional ventilation system, Negative Pressure Ventilation is still a very well-proven method of ventilation and we at Dima Italia firmly believe in its efficacy.



The brand new soft cuirass offered by Dima Italia is an accessory that enables patients to limit the restrictions that standard ventilation treatment may impose on the patient’s quality of life.

The shell structure, which embraces the patient’s chest, works as a ventilation chamber.

This cuirass is to be used with Dima Italia’s negative pressure ventilator Negavent – Pegaso Vent.

Its edge is covered with a soft foam to minimize any discomfort and reduce the pressure drop.

Cuirasses are available in 8 different sizes (further sizes can be made upon request) depending on body structure.

Weight and height of the patient should be taken into account when choosing the cuirass size, as well as abnormal body features such as scoliosis, curved areas or big breasts.

Studies and References

Biphasic cuirass ventilation for treatment of an air leak after pneumothorax in a patient with nemaline myopathy: a case report
Hino, H., Suzuki, Y., Ishii, E. et al. J Anesth (2016) 30: 1087. doi:10.1007/s00540-016-2250-x
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The Poncho offered by Dima Italia is a comfortable accessory for negative pressure ventilation.

Made of Gore-Tex®, the poncho is to be used with a grid and a backplate when connected to the negative pressure ventilator Negavent – Pegaso Vent.

Easy to use and store, it is washable and allows continuous negative ventilation while sleeping.

Poncho is available in 3 different sizes (M-L-XL).