Anesthesia Absorber Canister Test and Repair
The absorber canister holds carbon dioxide absorption material. The absorbent removes CO2 from expired gases before gases recycle back to the patient.
The 1500cc (1350g) absorber canister, found on the VMS and VMC anesthesia machines, has a transparent plastic canister located between upper and lower metal housings. Gaskets at the top and bottom fit between the canister and metal housings. A screen in the bottom gasket holds granular material in place, and a screen in the top gasket prevents granular material from entering the breathing circuit, if loose absorbent is used.
The absorber canister for the VME and VME2 anesthesia machines has a gasket located under the manifold. The canister attaches to the manifold with a knob accessed on top of the manifold.
Over-tightening the canister knob can strip the canister mounting hole.
1.Fill canister one third full.
2.Gently tap sides of canister to settle absorbent.
3.Fill canister two-thirds full and repeat step 2.
4.Fill canister to fill line and repeat step 2.
1.Peel off all sealing labels and wraps.
2.Place prepack in canister according to manufacturer’s recommendations.
1.Cover threaded hole when filling.
2.Fill both sides of canister 1/2 full.
3.Gently tap sides of canister to settle absorbent.
4.Fill canister to fill line.
The usable volume of absorbent should be not less than 1.5 times the tidal volume, do not wait for complete color change.
Use a solution of mild soap or detergent and warm water, or any acrylic safe cleaner.
Do not use alcohol, bleach, window cleaners, or harsh solvents.