| abstract |
An infusion pump for association with a fluid carrying tube is described.nThe pump has a tubeway defined therein and a tube present sensorncomprising a first sensor arm which is pivotable about an axis andncomprises a blade which is operable to engage the tube and a sensor flagnassociated with the first sensor arm and operable to actuate an opticalnswitch when a tube is in engagement with the sensor arm blade. |