7
DO NOT USE:
•
Glutaraldehyde solutions containing surfactants (e.g., Cidex 7 or Cidex Plus 28 Day)
•
Solutions containing hydrogen peroxide (e.g. Sporox)
•
Cidex PA solution
Water Resistant Connector Caps
Each catheter has water-resistant caps to protect electrical pins and circuitry. Place caps over the open
end of the connectors before cleaning. Remove caps prior to sterilization. Save and reuse these caps
each time the catheter is cleaned.
Cleaning Procedure
CAUTION:
DO NOT submerge the connector. This will damage the catheter and void its
warranty! Wipe with cleaner and gauze.
CAUTION:
DO NOT pull on the sensor tip end of the catheter while cleaning, wiping, or
drying the catheter.
CAUTION:
Use only the listed cleaners for the times/temperatures indicated.
CAUTION:
Delays in rinsing greatly reduce cleaning effectiveness!
1.
Wipe catheter with wetted gauze.
2.
Submerge only the distal contaminated portion of the catheter in room-temperature
water (DO NOT use hot water) up to the connector’s strain relief.
3.
Wipe the proximal outer surface of the catheter (including connector) with soft
gauze.
4.
Prepare cleaning solution. Place the distal portion of the catheter in the cleaning
solution.
5.
Wet soft surgical gauze with the cleaning solution. Wipe the outer surface of the
catheter with gauze.
6.
Soak distal portion of the catheter in a cleaning solution for the time specified, and
then remove.
7.
Gently wipe the catheter and sensor clean with a soft, wet gauze or tissue.
8.
Immediately rinse the catheter and sensor(s) at least three times with sterile,
pyrogen-free water. Do not reuse the water from each rinse, as it will contain
residuals from the cleaner.
9.
Dry the outside of the catheter with soft gauze.
10.
Package for sterilization.
11.
Failure to clean and sterilize according to directions may void catheter warranty.
4
Connector(s) and Cable(s)
The connector(s) should be routinely inspected for corrosion or bad contacts. Liquid entering the
connector(s) can cause electrical hazard, erratic operation and components corrosion.
Transducer Verification and Setup
CAUTION:
DO NOT handle or squeeze the pressure transducers during catheter manipulation!
Each transducer is calibrated for a standardized sensitivity of
5
μ
V/V/mmHg (37.6
µ
V/V/kPa)
.
To verify system outputs, apply a reference pressure signal to adjust sensitivity or to specific monitor
requirement. Use a mercury manometer or pressure reference device, as shown in Figure 3a or 3b.
Apply a known pressure to the Millar catheter and verify the signal at the monitor.
Follow the instructions for the Millar pressure control unit being used. Set up the mercury manometer
as shown in 3a or 3b and compare the 100 mmHg (13.3 kPa) output produced using the mercury
manometer with the electrical 100 mmHg (13.3 kPa) produced by the control unit.
Reading errors at or near the 0 mmHg (0kPa) manometer indication can be minimized by offsetting
the manometer zero indication to 20 mmHg (26.6 kPa) and using the 100 mmHg (133 kPa)
increments from the 20-120 mmHg (26.6 – 160 kPa) pressure indication rather than the 0-100 mmHg
(0-133 kPa) pressure indication.
Errors due to inconsistent meniscus shape between consecutive readings can be minimized by
adjusting the pressure at each reading to maintain a consistent curve at the top of the meniscus. These
errors may be avoided by using an electronic pressure meter as shown in Figure 3b.
Operating Instructions
When Using a Millar Pressure Control Unit
(see Control Unit’s IFU)
1.
Soak the sensor in room-temperature sterile water or sterile saline for 30 minutes prior to
use to minimize drift.
2.
Connect the Millar pressure control unit to the monitor.
3.
Turn the pressure control unit function switch to STANDBY 0 and adjust the monitor to
zero baseline.
4.
Turn the pressure control unit function switch to 100 mmHg and adjust the monitor
sensitivity.
5.
Connect the extension cable to the pressure control unit.
6.
Connect the catheter to the extension cable.
7.
Turn the pressure control unit function switch to TRANSDUCER. Shield the sensor from
light. Adjust the TRANSDUCER BALANCE CONTROL to zero baseline. LOCK the
catheter balance.
8.
The catheter system is now ready for use.
Monitor ZERO-REFERENCE can be verified by setting the Millar pressure control unit selector
switch to STANDBY 0 to reproduce the original zero baseline. Monitor zero baseline adjustment can
be performed at this time if required. Monitor GAIN can then be verified by setting the selector
switch to the 100 mmHg (13.3 kPa) position on the control unit. Monitor GAIN adjustments can be
made at this time if required.
CAUTION:
The “zero” output produced by placing the control unit function switch in the
STANDBY 0 position is an electrical zero, not an atmospheric zero!