Maquet HCU 40, Инструкция по эксплуатации

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| HCU 40 | 3 System Description | 21 |
Instructions for Use | 1.0 | EN | 01
Copyright Maquet Cardiopulmonary GmbH
3 System Description
3.1 How the HCU 40 Functions
The heater-cooler unit HCU 40 can be used to cool or warm a patient during
cardiovascular interventions and to regulate patient temperature.
The system includes two separate water circuits, the temperature of which can be
regulated independently of each other.
Patient water circuit
The patient water circuit is used to regulate the temperature of the patient. The
heat transfer to the patient is effected via a heat exchanger, which is generally
integrated in an oxygenator, and/or via a warming/cooling blanket with water
flowing through it.
Cardioplegia water circuit
The cardioplegia water circuit is used to regulate the temperature of cardioplegic
solution. The heat transfer is effected via a cardioplegia heat exchanger.
The following combinations of circuits and heat exchangers are possible:
Patient water circuit 1 (P1) Patient water circuit 2 (P2) Cardioplegia water circuit
(CPLG)
Oxygenator heat exchanger ­ ­
Oxygenator heat exchanger ­ Cardioplegia heat exchanger
­ ­ Cardioplegia heat exchanger
Oxygenator heat exchanger Warming/cooling blanket Cardioplegia heat exchanger
Pressure reducer Warming/cooling blanket Cardioplegia heat exchanger
In cases of emergency, other combinations are also possible in order to bridge
the failure of a water circuit, for example, (⇨ "Emergency Procedures", page 74
).