Supervision device, outpatient infusion device and method for supervising the administration of liquid drug via a flow channel

摘要

A supervision device (9) is revealed to monitor the flow of liquid drugs in a flow channel (20). The supervisory device (9) includes a flow detector (1),Willing to engage operationally with the flow channel (20) and generate a flow detector signal depending on a flow flow channel (20) flow detector at a flow detection site. The supervisory device (9) also includes a gas detector (8),Willing to engage operationally with the flow channel (20) and generate a signal from the gas detector depending on whether the liquid drug or gas is present in the flow channel (20) at a gas detection site at a distance upstream of the flow detection site. The supervisory device (9) also includes a processing unit (90) in operational coupling with the flow detector (1) and the gas detector (8),Where the processing unit (90) is configured to determine, on the basis of the signal from the gas detector, whether the non -fluent liquid drug is present at the site of flow detection or a gas bubble passes through the flow detector if the flow detector signal does not indicate a flow rate Liquid drug.