Codman EDS 3 Manual De Instrucciones página 5

CAUTION: Close the clamp below the atmospheric vent to prevent
wetting the vent when the bag is laid down, such as during patient
transport. If the vent becomes wet, it may prevent the flow of CSF into
the bag. Once the system is set up on an IV pole or other support, open
the clamp below the vent.
1. Loosen the white screw and slide the black Drip Chamber pressure
reference line to the appropriate pressure setting in mm Hg or cm H
Turn the white screw clockwise to secure. DO NOT OVERTIGHTEN
THE SCREW (see Figure 9).
Note: The Drip Chamber pressure reference line corresponds to the fluid
outlet within the Drip Chamber. The inlet tubing has no effect on the pressure
setting because both sides of the tubing are equidistant to its peak from the
pressure setting arrow.
2. Refer to Operating the EDS 3 CSF External Drainage System to set the
stopcocks to perform the appropriate procedure.
3. If you are using intracranial pressure monitoring lines (not supplied),
attach them to the system stopcock or to the patient line stopcock. Refer
to Monitoring ICP for instructions on setting the respective stopcock to
the Monitoring Only position. Note: The design of the CODMAN EDS 3
system permits air to enter at the Drip Chamber microbial retentive
atmospheric vent. This allows setting of the drainage pressure by means
of the Drip Chamber height and prevents suction or backpressure from
the downstream line or collection bag from affecting the setting. It is
normal to have air in the tubing downstream from the Drip Chamber.
Operating the EDS 3 CSF External Drainage System
The EDS 3 system allows you to perform several patient drainage and
monitoring procedures. These are:
• D raining CSF into the Drip Chamber;
• D raining CSF into the collection bag from the Drip Chamber;
• M onitoring ICP with a fluid coupled transducer (FC transducer);
• I njecting medication into the system;
• S ampling CSF.
Operating the three stopcocks enable each of these procedures. This
section describes the correct operation of the stopcocks.
Note: The following procedures assume the EDS 3 system has been
properly installed, and leveled.
Note: The EDS 3 system is shipped with the stopcocks in the Null position.
Using the Patient Line Stopcock
(Refer to Figure 10)
The Patient Line stopcock controls the flow of CSF from the patient line to
the other components of the EDS 3 system. The following describes how
you can set the patient line stopcock. Since the patient line is flexible and is
sometimes looped, the patient line stopcock should always be positioned
relative to the monitoring port.
• D rainage Only Position – This allows the patient line to communicate
with the system stopcock. This position disables the monitoring port. This
is the position for drainage of CSF.
• Monitoring Only Position – This allows the patient line to communicate
with the monitoring port. This position stops the flow of CSF to the system
stopcock. This is the position for monitoring ICP with an FC transducer.
• Closed Position – This stops the flow of CSF to the system stopcock and
disables the monitoring port.
• N ull Position – This position may result in inaccurate ICP readings and
therefore it is not recommended.
Using the System Stopcock
(Refer to Figure 11)
The System stopcock controls the flow of CSF to the Drip Chamber. It also
provides a port that can be used to connect an ICP monitor (FC transducer).
The following describes how you can set the system stopcock.
• Drainage Only Position – The system stopcock communicates with
the Drip Chamber. This position disables the monitoring port. This is the
position for drainage of CSF.
• Monitoring Only Position – This allows the patient line to communicate
with the monitoring port. This position stops the flow of CSF to the Drip
Chamber. This is the position for monitoring ICP with a FC transducer.
• Closed Position – This stops the flow of CSF to the Drip Chamber and
disables the monitoring port.
• N ull Position – This position may result in inaccurate ICP readings when
using an FC transducer and therefore it is not recommended.
Using the Drip Chamber Stopcock
(Refer to Figure 12)
The Drip Chamber stopcock controls whether CSF flows into the collection
bag or accumulates in the Drip Chamber. It also provides a port for sampling.
The following describes how you can set the Drip Chamber stopcock.
• Drainage Only Position – This allows fluid from the Drip Chamber
O.
to empty into the collection bag. In this position, the sampling port is
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disabled. This is the position for draining CSF into the collection bag.
WARNING: Monitoring ICP with an FC transducer at the Drip Chamber
stopcock gives you readings that are clinically irrelevant. Do not
monitor ICP at the Drip Chamber stopcock.
• Sampling Only Position – This allows the Drip Chamber to communicate
with the sampling port, but does not allow fluid to drain into the collection
bag. This is the position for sampling collected CSF.
• D rip Chamber Position – This stops the flow of CSF to the collection bag
and disables the sampling port. In this position, CSF accumulates in the
Drip Chamber, but cannot be sampled.
• Null Position – This position is not recommended.
Priming the EDS 3 System
Note: The stopcocks are shipped in the Null position.
Note: It is important to use aseptic technique while priming the EDS 3 system.
1. Fill a LUER-LOK syringe with sterile physiological saline solution. It is
recommended that a 10 ml syringe be used.
2. Place the Patient Line stopcock in the Monitoring Only position (see
Using the Patient Line Stopcock).
3. Remove the LUER-LOK cap from the catheter connector (proximal end)
of the Patient Line.
4. Remove the cap from the monitoring port of the patient line stopcock.
5. Connect the syringe to the monitoring port of the patient line stopcock.
6. Depress the syringe slightly and flush the small length of line from the
patient line stopcock to the catheter connector.
7. Place the patient line stopcock into the Closed position. Depress the
syringe and flush the system through to Drip Chamber. Verify absence
of leaks. Verify there is a free flow of fluid to the Drip Chamber.
8. Verify that fluid drains from the Drip Chamber into the collection bag.
9. Place the patient line stopcock into the Drainage Only position and
remove the syringe. Replace the cap on the monitoring port of the
Patient Line stopcock.
Connecting the EDS 3 Unit to the Patient Catheter
Remove the caps from the ventricular or lumbar catheter and from the
patient line. Attach the female connector of the catheter to the patient line.
CAUTION: Take care when removing and replacing the LUER-LOK cap
to prevent contamination.
Draining CSF into the Drip Chamber
1. Loosen the white screw by turning it counter-clockwise. Slide the
Drip Chamber arrow to the appropriate pressure setting in mm Hg
or cm H O. Turn the white screw clockwise to secure. DO NOT
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OVERTIGHTEN THE SCREW.
2. Rotate the patient line stopcock until it is in the Drainage Only position.
3. Rotate the system stopcock until it is in the Drainage Only position.
4. Rotate the Drip Chamber stopcock until it is in the Drip Chamber position.
5. Verify that CSF drains from the patient to the Drip Chamber, and that
the Drip Chamber fills with CSF. Monitor the Drip Chamber and record
collected volumes as required.
Draining CSF into the Collection Bag from the Drip Chamber
1. To ensure an accurate measure of the fluid contained in the Drip
Chamber, rotate the system stopcock until it is in the Closed position.
2. Rotate the Drip Chamber stopcock until it is in the Drainage
Only position.
3. Verify that CSF drains from the Drip Chamber to the collection bag and
that the collection bag fills with CSF.
4. Rotate the system stopcock until it is the Drainage Only position.
5. Monitor the collection bag as required.
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