Abstract: A device for delivering a ventilation gas including a T-connector including a cross member adapted to carry a ventilation gas and a tubular stem extending substantially perpendicularly from the cross member; and a plurality of tubes each having a cross section smaller than a cross section of the tubular stem extending transversely through the cross member, and extending through and within the tubular stem, wherein remote ends of the plurality of tubes terminate beyond the tubular stem; and further wherein at least two of the plurality of tubes carry pulsating pressure gases of different frequencies.