User guide

MAN 01/EN/01 CRONO S-PID 50 02/13

APPENDIX 2

TIME NEEDED TO SIGNAL AN OCCLUSION

The time needed to signal an occlusion is the interval between the beginning

of the occlusion condition and the recognition of the condition by the pump.

This value depends on the flow rate, because the lower the flow rate, the

longer the time needed by the pump to recognise the occlusion condition.

The values given here consider the time needed jointly by the pump and the

reservoir to signal the occlusion.

• The time needed to signal an occlusion is dependent on the flow rate,

because the lower the flow rate, the longer the pump will take to activate the

occlusion alarm.

• The time needed to signal the occlusion can increase if there is air in the line,

if you are using catheters, filters and extension tubes of other dimensions,

or in an elastic material, or when the line from the pump is connected to

other devices.

• For patients who could suffer severe harm if there is an interruption in

the administration of the drug by the pump, arrangements must be made

for them to be under the strict supervision of a doctor who can take any

immediate corrective action required.

Flow rate Time needed to signal an occlusion

1 ml/h About 2 hours

25 ml/h About 4 minutes

50 ml/h About 2 minutes

WARNINGS

APPENDIX 4