Fresenius Medical Care 5008, Руководство по эксплуатации

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Chapter 11: System Description
Fresenius Medical Care 5008 OP 5/09.06 11-43
Caution
When using central venous catheters, the following precautions must
be observed:
1. The dialysis system must be connected to a potential equalization.
2. If additional electro-medical devices are connected to the patient or
they are positioned within the reachable area of the patient, it must
be ensured that all leakage currents of these devices (device
leakage currents, housing leakage currents, earth leakage currents
and patient leakage currents) are below the respective limit for CF
applied parts.
This means:
10 µA maximum in normal conditions, and 50 µA in "single fault
conditions".
This also applies to patient positioning devices (e.g. patient chairs).
Devices with leakage currents within these limits, but with an
application current exceeding the specified leakage currents (e.g. on
electro stimulators) must not be used. This also applies to
defibrillators, which have no applied part type CF.
If all requirements have been fulfilled, these devices may be
operated on the patient or within the reachable area of the patient,
provided they are, like the dialysis system, integrated into the
potential equalization.
If these conditions are not fulfilled, no other additional electro-
medical device must be connected to the patient or positioned within
the reachable area of the patient.
In case of doubt, ask your local technician.
Leakage currents of additional,
electro-medical devices may be
led to the earth via the
central venous catheter.
Additional,
electro-medical
device
Dialysis System
all types!
(B / BF / CF)
Housing
leakage currents
of all types
10 times higher than
"CF" patient
leakage current
Via the blood
and the dialysate
the patient is
electrically
connected to the
earth potential.
Catheter