Sampling The Csf And Injection; Adjustment Of A Polaris® Valve After Implantation: Reading And/Or Changing The Operating Pressure Setting - Sophysa POLARIS SPV-140 Gebrauchsanweisung

Pinch the catheter with a fi nger just before the reservoir, then with another fi nger
press the reservoir to push the CSF through the valve and distal catheter. A reservoir
that cannot be compressed easily may indicate an obstruction either of the valve or
the distal catheter.
P :
RECAUTION
D
O NOT RELY ONLY ON THE CHARACTERISTICS OF THE PATENCY TEST TO DIAGNOSE AN OBSTRUCTION
. O
IN THE SHUNT SYSTEM BSTRUCTION OF A SHUNT SYSTEM CAN OCCUR IN ANY OF ITS COMPONENTS
AND SHOULD BE DIAGNOSED FIRST OF ALL BY THE CLINICAL DATA AND ADDITIONAL EXAMINATIONS

Sampling the CSF and injection

Access to the CSF is obtained by pricking the reservoir with a 24G (or smaller diameter)
Huber needle. The integral reservoir on the SPVA and SPVB type models is designed
for occasional use. Its watertight performance is reduced after very frequent pricking
into the dome.
- To inject in the proximal direction, compress the catheter just after the valve
outlet connector.
- To inject in the distal direction, compress the catheter upstream of
the reservoir.
N :
OTES
E
LECTIVE INJECTION IN THE DISTAL DIRECTION IS NOT POSSIBLE WITH A MODEL OF THE
( )
BURR HOLE RESERVOIR BECAUSE THERE IS NO ACCESS TO THE VENTRICULAR CATHETER UPSTREAM
.
OF THE RESERVOIR
E
NSURE THAT THE BASE OF THE RESERVOIR IS NOT CROSSED WITH THE NEEDLE
P :
RECAUTIONS
D ,
O NOT INJECT INTO OR TAKE SAMPLES FROM
.
PATENCY
S
IGNIFICANT OVERPRESSURE COULD DAMAGE THE SHUNT IF IT IS KNOWN THAT THERE IS
.
AN OBSTRUCTION
D
O NOT INJECT TOO FAST OR INJECT TOO GREAT A VOLUME
T
HE INCREASE IN PRESSURE COULD DAMAGE THE SHUNT
D
O NOT USE A SYRINGE WITH A VOLUME OF LESS THAN
T
OO GREAT A PRESSURE COULD DAMAGE THE SHUNT
Adjustment of a Polaris® valve AFTER IMPLANTATION:
reading and/or changing the operating pressure setting
The Polaris® adjustment kit is designed specifi cally for setting Polaris® valve
pressure.
P :
RECAUTION
C
HANGING THE VALVE PRESSURE MUST ONLY BE DONE BY A NEUROSURGEON
.
PERSON
N :
OTE
I -
F A VALVE IS PRE CONNECTED TO A
WHEN ADJUSTING TAKE INTO ACCOUNT THE FACT THAT THE
.
THE VALVE OPERATING PRESSURE
For the adjustment, the patient should be positioned such that the valve implantation
site is easy to access. Having valve horizontal is recommended.
.
, CSF
THE WITHOUT HAVING TESTED THE SHUNT
.
.
10
CC FOR INJECTIONS OR TAKING SAMPLES
.
,
OR OTHER QUALIFIED
S X® -
IPHON GRAVITATIONAL ANTI SIPHON DEVICE
S X® 200
IPHON ADDS UP TO
Figure 17
.
1) Identifi cation of the valve model
Identify the reference and/or the pressure range of the Polaris® valve to be adjusted:
Refer to the Patient Identifi cation Card or the patient record (traceability label)
and/or perform an X-ray examination of the valve (cf. §10 - Post-operative X-ray
examination).
SPVB
TYPE
2) Choice of Locator reading area
Use the Locator, by default adapted to valves with standard calibration
(30-200mmH O).
2
For a " special pressure " valve model (10-140, 50-300 or 80-400mmH
ring corresponding to the pressure range of the valve model identifi ed in Step 1 on
the Locator, by positioning the holes in the ring on the two pins on the Locator.
W :
ARNING
D P
O NOT USE A OLARIS
MAKING SURE THAT THE PRESSURE RANGE SHOWN ON THE
O -
VER DRAINAGE OR UNDER
ADJUSTMENT WITH A DIFFERENT PRESSURE RANGE ON THE
.
VALVE MODEL
.
3) Positioning the Locator
Palpate the valve implantation site in order to determine both the location and
orientation of the valve.
The inlet and outlet connectors at each end of the valve and the reservoir (if fi tted)
are the easiest components to locate. Locate these fi rst.
Place the Locator on the implant site with its axis aligned with that of the valve
connectors, and with the green arrow pointing in the direction of the CSF fl ow.
Center the Locator at best above the valve: Locate the valve by palpating it through
the cut-out in the center of the Locator.
Press the Locator fi rmly against the valve so as to center and immobilize the valve.
Figure 18
,
H O
MM TO
2
14
®
ADJUSTMENT KIT WITHOUT PREVIOUSLY IDENTIFYING THE VALVE MODEL AND
L
OCATOR CORRESPONDS TO THIS MODEL
-
DRAINAGE CAN RESULT FROM TAKING A READING AND
L
OCATOR FROM THAT OF THE IMPLANTED
O), fi x the reading
2
.
/
OR MAKING AN