THE PNEUPAC HYPERBARIC VARIANT HB: A VENTILATOR SUITABLE FOR USE WITHIN A ONE-MAN HYPERBARIC CHAMBER

We describe the performance of the pneuPAC hyperbaric variant HB, a ventilator designed for use in a one-man hyperbaric chamber. The ventilator delivered minute volumes of 11–23 litre at 1 atm abs to 7.6–16 litre at 2.5 atm abs. The delivered minute volume may be controlled easily from outside the chamber by manipulation of the ventilator rate. 11.5–31 b.p.m.