Checking The Pressure Setting; Recording The Pressure Selected For The Implantation; Reading And/Or Changing The Valve Pressure After Implantation; Identifying The Valve Model - Sophysa POLARIS Gebrauchsanweisung

NOTE
Do not attempt to turn the Magnet if it is not com-
pletely inserted into the Locator. The unlocking of
the valve rotor and its drive could otherwise be
compromised.
4. Place the Magnet more than 50 cm from the valve.

8.1.6. Checking the pressure setting

Reinsert the Compass in order to check the pressure, or
check the setting visually on the valve.
8.1.7. Recording the pressure selected for the implanta-
tion
Note the pressure value read in the previous step on the Pa-
tient Identification Card (PC-SPV) and make sure to hand the
card to the patient.
8.2. Reading and/or changing the valve pressure after
implantation
CAUTION
The operation scar and/or post-operative edema can
make positioning the Locator painful and inaccurate.
This could then cause difficulties in adjustment or even
make it temporarily impossible.

8.2.1. Identifying the valve model

1. Check the model and pressure range of the Polaris valve
to be adjusted:
– on the Patient Identification Card or in the patient's
medical record (traceability label),
– and/or with an X-ray examination of the valve.
See Instructions for Use Polaris
operative X-ray examination: identification of the valve
model and pressure reading".
2. Check under the Locator that it is compatible with the
valve model used:
– reference is PAK2-LI,
– sentence says "Designed exclusively for use with PO-
®
LARIS SPV series".
®
valve, Section "Post-
8.2.2. Displaying the correct pressure range on the Loca-
tor
CAUTION
Do not use an adjustment kit without ensuring that the
pressure range visible on the Locator corresponds to
the valve model to be adjusted.
1. Check that the pressure range displayed in the Locator
reading area corresponds to the previously identified
valve model.
2. If this is not the case, display the pressure range corre-
sponding to the implanted valve model:
a. Hold the Locator with one hand.
b. Turn the rotating ring until a "click" is heard. This
click guarantees that a complete pressure range is
displayed.
c. Repeat the operation until the valve model used ap-
pears at the left end and the 5 pressures are visible.

8.2.3. Positioning the patient

CAUTION
Make sure the patient stays still during the adjustment
of the pressure.
If the patient moves, it could lead to a slight offset in re-
lation to the valve, when positioning the Locator. Thus,
being off-center could create a gap between the pres-
sure originally selected by the surgeon, and the pres-
sure set in the end, potentially leading to overdrainage
or underdrainage.
Position the patient so that the valve is as horizontal as pos-
sible and the implantation site is easy to access.

8.2.4. Positioning the Locator

1. Palpate the valve implantation site in order to determine
both the location and orientation of the valve.
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