Test Procedure - DePuy Synthes Codman Neuro CERTAS Plus Manual Del Usario

5. Adjust the stopcock to connect the syringe to the
6. Using the syringe, flush the stopcock and tubing with
7. Turn the stopcock to connect the fluid pathway from
8. Using the syringe, fill the manometer to a minimum of
Zeroing the Manometer
1. After filling the manometer, turn the stopcock to
2. Allow the water column in the manometer to fall.
3. If necessary, adjust the height of the manometer to

Test Procedure

1. Adjust the valve to desired setting while the valve
2. Remove valve from the sterile package, and connect
3. Adjust the stopcock to connect the syringe to the
4. Position the valve vertically with the outlet
5. Using the syringe, gently flush saline through the
6. Once all air has been removed from the valve,
7. Adjust the stopcock to connect the syringe to the
8. Turn the stopcock to connect the manometer to the
9. The water column in the manometer will start to fall.
206521-001-G-INS.indd 21
tubing in the water bath (Figure A-2).
sterile fluid to purge the system of air.
the syringe to the manometer (Figure A-6).
10 cmH O.
2
connect the manometer with the bath (Figure A-7).
The water column should stop at the zero level of the
manometer (Figure A-8).
bring the water level in the manometer to the same
level as the fluid in the water bath.
remains in its sterile package.
the valve to the manometer/syringe assembly using
the tubing placed in the water bath.
valve assembly (Figure A-2 above).
pointed downward.
system while gently pressing the reservoir to purge air
bubbles from the valve assembly. Once fluid begins
flowing through the valve mechanism, the outlet of
the valve can be pointed upward to further assist in
evacuating air from the system.
Note: An excessive flow rate (>0.75 mL/min)
activates the SIPHONGUARD Device and creates
the impression that the valve is distally occluded. In
reality, flow is being diverted to the high resistance
secondary pathway.
submerge the valve completely in the water bath. For
valves with a distal catheter, submerge the end of the
catheter in the water bath to obtain accurate results.
Confirm that there are no bubbles attached to the end
of the distal catheter and that the water bath does not
obstruct the end of the catheter.
manometer (Figure A-6 above) and refill the manometer
to a height equal to the operating pressure of the next
highest setting above the valve setting being tested, or
to 60 cmH O if one is testing Setting 8. Refer to Table 1
2
for operating pressure specifications.
valve (Figure A-7 above).
Allow the water column to drop for 2 minutes and
then read the resultant pressure.
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