Fresenius Medical Care 4008 S Service Manual

Chapter 11: Functional description
11-26 Fresenius Medical Care 4008 S (Version V10) SM-EN 7/01.13
Syringe type table
Heparin pump functions:
– RAM and CRC test after power on
– Delivery rate adjustable between 0.1 ml and 10 ml in increments
of 0.1 ml
– Stop time adjustable between 0 min and 2 h in increments of 1 min
– Bolus administration
11.1.3.4 Air Detector
Air entering the patient's extracorporeal blood circuit may cause an air
embolism. In order to catch limited amounts of air and to separate
accompanying air bubbles, the venous blood line is expanded (venous
bubble catcher). A major task of the air detector is to monitor the filling
level in the venous drip chamber.
The protection system against air infusion uses the method of ultrasonic
transmission. Ultrasonic converters are attached on either side of the
venous bubble catcher. At periodic intervals of approx. 90 ms, a
transmitting resonator generates attenuated ultrasonic vibrations at a
natural resonance of approx. 90 kHz, which are absorbed by a receiving
resonator. The amplitude of the signal received is dependent upon the
medium between the converters. Its value is at its minimum with the
venous bubble catcher empty (air) and at its maximum with bubble-free
Hex switch
position
Syringe type Release as part of
overall approval
0 20 ml BD / Fresenius approved
1 30 ml Fresenius not approved
2 50 ml Fresenius not approved
3 10 ml BD not approved
4 30 ml BD not approved
5 50 ml BD not approved
6 20 ml Terumo not approved
7 30 ml Terumo not approved
8 50 ml Terumo not approved
9 20 ml JMS not approved
A 20 ml Nipro not approved
B 20 ml Weigao not approved
C not assigned –
D not assigned –
E not assigned –
F not assigned –

Fresenius Medical Care 4008 S Specifications

General

Brand	Fresenius Medical Care
Model	4008 S
Category	Medical Equipment
Language	English