| abstract |
A cassette identification system for use with a medication infusion system having disposable cassettes which are mounted onto a main pump unit is disclosed which uses an optical sensor module (670) to read identifying bits (148,150,152) on the cassette. The identification indicia contained on the cassette each either pass light through a portion of the cassette, or diffuse the light to prevent it from passing through the cassette. The optical module (670) is mounted on the main pump unit, and includes light sources (686,688,690) and sensors (692,694,696) for each of the identification indicia on the cassette; the system may use either redundant or non-redundant coding for identifying the cassettes. |