The Sabre Dive O

and a positive pressure resuscitation demand valve.

The demand valve allows a breathing patient to selfadminister

100% oxygen if required. Should a casualty be

in need of artificial ventilation or CPR, the practice has been

to use a pocket mask with a constant supply of oxygen to

enrich the exhaled gas from the first aider. The Dive 0

demand valve incorporates a manual trigger mechanism

and when depressed will allow flow of up to 40 litre per

minute into the casualty’s lungs. The trigger is used with the

frequency and duration that is recommended for manual

CPR. To avoid over-inflation of the lungs, the demand valve

is fitted with a pre-set pressure relief valve that vents excess

gas to atmosphere if the maximum airway pressure of

45cmH

1: 100% oxygen concentration from the cylinder is used, which is of maximum benefit such as

decompression sickness and respiratory problems.

2: The trigger minimises exertion on the carer by removing the need to breathe into the casualty

which is particularly useful during extended duration CPR. Requiring only one handed operation,

they are free to carry out other tasks.

3: The pressure relief valve ensures that the lungs and airway of the casualty are not compromised

by over-inflation. The outlet of the demand valve will fit to a standard oxygen mask and

incorporates an integral exhalation valve.