9
Using Vascular Access Devices and Keeping the System Pressurised
When Blood Has Passed from One Bottle to the Other
5a
5c
5d
5f
5g
5e
To depressurise the system, open the orange cap on the bulb and allow air to
escape.
Remove the pressure release valve from the second bottle by turning it anti-
clockwise and pulling it out of the bottle valve.
Remove the bulb and tube from the first bottle by turning the connector anti-
clockwise and pulling it out of the bottle valve.
Locate the pressure release valve fully into the first bottle valve and turn clockwise
until it locks into place.
Re-charge the system by pumping the bulb until blood begins to flow into the first
bottle.
The arm is now ready for use again.
Swap both the bulb and pressure release valve onto the alternate bottles. Locate
the tube and bulb connector fully into the second bottle valve and turn clockwise
until it locks into place.
5b Once the system has depressurised, close the orange cap again.
4a
4b
A range of vascular access devices may be used to take blood from the arm such as
syringes, vacutainers and cannulae.
Periodically pump the bulb to maintain pressure in the system during use.
It is recommended that 21 gauge or smaller cannulae and needles be used
on the arm to avoid accelerated wear of the skin and veins.
During use, blood will eventually pass from one bottle to the other.
The bulb can easily be swapped to the other bottle so use may continue relatively
uninterrupted.
Before the first bottle is completely empty and air enters the vein system,
discontinue use and depressurise.
