MIETHKE M.blue Instrucciones De Manejo página 23

Fig. 12: Insertion of the Adjustment Ring
1. Adjustment Ring 2. Scale Ring
The opening pressure of the M.blue gravita-
tional unit uses the adjustment range of 0 to
40 cmH O of the blue inner scale.
2
Fig. 13: Adjustment of the gravitational unit of M.blue
(in the picture example to 32 cmH 2 O)
By applying slight pressure with the index fin-
ger to the valve diaphragm located in the cen-
tre of the adjustment ring and under the skin,
the rotor brake is released and the opening
pressure of M.blue is changed to the desired
value (fig. 14).
Fig. 14: Adjustment using the
M.blue plus Adjustment Ring
INSTRUCTIONS FOR USE | GB
M.blue is equipped with a feedback mecha-
nism. If targeted pressure is exerted on the
valve, an acoustic signal (a clicking sound)
is audible, or a resistance can be felt to
give, as soon as the rotor brake has been
released due to the valve housing design. In
other words the valve shows both acoustically
and haptically when the pressure is sufficient
for uncoupling of the brake. Once this pres-
sure has been released the rotor is adjust-
ment-proof again. Although the click caused
by releasing the rotor brake is easily audible
before implantation, this can be considerably
reduced after implantation. This can be due to
the CSF filling the valve, its position and the
condition of the implants surroundings. Nor-
mally, however, it should be audible to the
patients themselves or through the use of a
stethoscope.
Adjustment with the
M.blue plus Adjustment Assistant
Alternatively, the M.blue plus Adjustment
Assistant can be used to adjust the opening
pressure. To do this, insert the M.blue plus
Adjustment Assistant into the adjustment ring
aligned to the desired value and press it with
your index finger (fig. 15).
Fig. 15: M.blue plus Adjustment Assistant
WARNING
When adjusting, please ensure that the open-
ing pressure is changed by a maximum of 16
cmH 2 O per adjustment process; otherwise
errors may result.
Example: The opening pressure is to be
changed from 6 to 36 cmH
method is an adjustment in two stages: Initial
adjustment from 6 to 22 cmH
quently from 22 to 36 cmH
O. The correct
2
O and subse-
2
O.
2
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