2 Setting up
41
DISPOSABLE PATIENT CIRCUIT
The disposable patient circuit consists of an inspiratory limb with a connector at
one end of corrugated tubing, and a one-way valve connected to the Patient Wye
at the other end (Figure 13).
Figure 13: Patient Circuit Connections (Breathing Circuit)
The Patient Wye contains a flow sensor which is connected by two sensor tubes
to the luer connectors on front of the ventilator.
The Expiratory Limb fastens to the Patient Wye and leads to the Exhalation Valve,
which connects to a blue tube, the Control Line, and leads back to the ventilator
front panel. (See Figure 1)
To connect a disposable patient circuit:
1. Twist the knurled connector of the inspiratory limb onto the ventilator outlet.
The connector should fit snugly.
2. Connect the Flow Sensor tubing (the clear tubes) to their connectors. Ensure
correct connection of the Male and Female luer connectors on the flow
sensor tubing.
3. Connect the external Exhalation Valve control tube (the blue tube) to its
connector (marked with a blue dot).
4. Ensure that all connections are secure and airtight. Perform an Operation
Verification Test (O.V.T.), as described on page 60.
REUSABLE PATIENT CIRCUIT
The reusable patient circuit contains the same components as the disposable
circuit. It should be sterilized by a stem autoclave. The Versamed reusable Patient
Circuit can be sterilized up to 40 cycles.
CAUTION Prior to use, examine the patient circuit carefully. Should any damage,
discoloration or other abnormality appear on any part of the patient circuit, do
not use it. Replace the patient circuit.
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