Operating Manual OXI-dive
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Page 6 of 19
3 Description of Major Components
Oxygen Hoseline
The colour coded white oxygen hoseline is fitted with a diameter indexed oxygen
handwheel at each end. One handwheel is attached to a regulator attached to an external
oxygen supply cylinder if available. The other handwheel is fitted to a self- seal valve of
the KDK85 Autovalve. This is used to provide oxygen from an outside source, thus
conserving the contents of oxygen cylinder in the OXI-dive
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KDK85 Autovalve
™
The KDK85 Autovalve is a combined regulator and flowmeter, manufactured by Medical
Developments International Limited. The regulator reduces the cylinder pressure to
approximately 400 kPa and the flowmeter has adjustable oxygen flow rate settings between
0.5 to 8 L/min. An Oxygen Flush valve is incorporated; when depressed it provides an
instantaneous rapid flow of oxygen (in excess of 40 L/min) at all settings.
The KDK85 Autovalve incorporates three
diameter indexed self-sealing valves that can
be used as an inlet for an external oxygen
supply, or as outlets for additional delivery
devices. For example, the 8 L/min flow
restrictor and handwheel assembly can be
attached and used to connect oxygen to
the CPR-PRO resuscitation mask or the non-
rebreathing therapy mask with a safety vent.
The MTV-100/Manually Triggered
Ventilator (optional) is also fitted to a self
seal valve.
The cylinder contents gauge has a range from 0 to 30,000 kPa and is clearly marked
1/4, 1/2, 3/4 and FULL. The scale at the lower and upper ends of the operating range is
coloured red. The cylinder valve connects to the pin-index yoke of the KDK85
Autovalve (Australian Standard AS 2473 Valves for compressed gas cylinders).
Closed Circ
uit ‘Softbag’ Resuscitation System
The Closed Circuit ‘Softbag’ Resuscitation System consists of the KAB circular carbon
dioxide absorber, the Universal Twin Hose lightweight single-patient use breathing circuit,
an elbow fitting which attaches to the facemask and a 2 litre latex- free breathing bag with
or without an extension hose.
Supplemental oxygen enters the breathing circuit through the ’INHALE’ side of the KAB™
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absorber. Two, one-way silicone valves ensure that the fresh gas flows into the
inspiratory limb of the twin hose and the expired gas flows out through the expiratory limb.
The expired gas continues through the carbon dioxide absorbent in the right side of the
KAB™ absorber into the rebreathing bag which inflates. During inspiration the gas passes
from the breathing bag, through the remainder of the absorbent in the left side of the
KAB absorber, to the inspiratory limb of the breathing circuit.
The movement of the breathing bag reflects the patient’s breathing and provides the
operator with an immediate diagnosis of the respiratory pattern, safely and effectively.
