MIETHKE proGAV 2.0 Mode D'emploi page 19

proGAV ® 2.0
Fig. 7: proGAV 2.0 Compass
a) open b) closed
The proGAV 2.0 Adjustment Tool is used for
adjusting the valve opening pressure of the pro-
GAV 2.0 from 0 to 20 cmH O.
Fig. 8: proGAV 2.0 Adjustment Tool
Each proGAV 2.0 is calibrated under strict qual-
ity control procedures. The presetting of the
adjustable DP-unit is 5 cmH O, but it must
be checked before implantation. The setting is
changed in the following steps:
1. Locating the valve
If the instrument is opened a template is visible
(fig. 9). Then the valve can be located on the
patient's head with the forefinger.
Fig. 9: Locating the valve
with the proGAV 2.0 Compass
INSTRUCTIONS FOR USE | EN
The proGAV 2.0 Compass must be positioned
centrally on the valve. The markings on the
instrument "proximal" and "distal" show the
flow direction.
2. Verifying the opening pressure
When the compass is closed, the pressure set-
ting is indicated automatically (fig. 11).
Fig. 10: Verifying the pressure setting
with the proGAV 2.0 Compass
CAUTION
Placing the proGAV 2.0 Compass in a non-
central position on the valve can lead to
erroneous readings!
The proGAV 2.0 Compass is sensitive to exter-
nal magnetic fields. To exclude undesirable
interactions the proGAV 2.0 Adjustment Tool
should not be in the immediate vicinity of the
proGAV 2.0 Compass while determining the
opening pressure. We recommend a distance
of about 30 cm.
3. Adjusting the opening pressure
The proGAV 2.0 Adjustment Tool must be posi-
tioned centrally on the valve. For a correct
placement the valve should be palpated with
the forefinger through the opening in the mid-
dle of the instrument. The desired pressure set-
ting must point on the scale in direction of the
inlet connector and the ventricular catheter. By
applying light pressure the rotorbrake will be
released and the pressure of the proGAV 2.0
can be changed.
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