Codman HAKIM Bedienungsanleitung Seite 22

3.
Bring the end of the distal catheter level with the fluid level in the
manometer (Figure A-4).
Note: The CODMAN HAKIM Valves with SIPHONGUARD Device
must lie on a sterile surface and remain undisturbed for the duration
of the test.
Figure A-4
4. Hold the catheter distal tip adjacent to the manometer and slowly lower
the end of the distal catheter until the fluid level in the manometer
begins to drop.
5.
Continue to lower the catheter tip at a rate that exceeds the drop
rate of the fluid level in the manometer. As you do so, you will note
a corresponding increase in the rate of descent of the fluid level in
the manometer.
6.
A point will be reached where the rate of descent of the fluid level
in the manometer dramatically decreases, but does NOT stop. This
is the point at which the SIPHONGUARD Device primary pathway
closes and flow diverts to the higher resistance secondary pathway.
This confirms proper functioning of the SIPHONGUARD Device.
7. Repeat Steps 3 through 6 as necessary to reconfirm SIPHONGUARD
Device function.
8.
Remove distal catheter for manometer testing of valve.
Manometer Testing
Note: Performing a manometer test is not recommended as this test
is susceptible to environmental factors and yields a result that is not
physiologic in nature and for which manufacturers do not specify
performance ranges.
Note: Perform this test only on devices that have been prepared according
to Steps 1 through 8 in Flushing Procedure.
Equipment Required (use all sterile equipment, perform testing under
sterile conditions)
One manometer, wide-bore (e.g. 3.5 mm), graduated in mm (available in
lengths from 38 to 60 cm)
One 4-way stopcock
One syringe, 5 mL
One syringe filter, 5 µm
Tubing adapters
Silicone tubing
One male luer connector with 1/16 in. barb
Saline solution
Flushing Procedure
Prepare the valve following Steps 1 through 8 in SIPHONGUARD Device
Functional Testing, Flushing Procedure.
Equipment Setup
1.
Disconnect the valve from the tubing leading to the stopcock.
Perform this step with the valve submerged in a water bath so as not
to reintroduce air into the valve.
2.
Place the end of the tubing leading from the stopcock into the water
bath. Position the tubing so that the end does not come into contact
with the sides of the bath.
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