OPERATION
BLANKETROL III, Model 233
OPERATION AND TECHNICAL MANUAL
Page 22 of 131
1-4.
REQUIRED ACCESSORIES
Operation of the BLANKETROL III System requires the use of the blanket(s) designed to circulate
warm or cool distilled water, a connecting hose with quick-disconnect male and female fittings and,
if any of the automatic modes are to be utilized, a 400 Series thermistor probe. BLANKETROL III
System Equipment and accessories are listed in Table (6-8.).
1-5.
FUNCTIONAL DESCRIPTION OF THE BLANKETROL III SYSTEM
1-5.1. Theory of Operation
The BLANKETROL III unit can be set so that it operates based on the circulating water temperature
(
MANUAL CONTROL MODE
), or it can be set so that it operates based upon the patient’s
temperature (Automatic Modes). The five Automatic modes include:
1)
AUTO CONTROL MODE
2)
GRADIENT 10C
MODE
3) GRADIENT 10C SMART MODE
4) GRADIENT VARIABLE MODE
5) GRADIENT VARIABLE SMART MODE
In
MANUAL CONTROL MODE,
the operator specifies the circulating water Set Point temperature.
The unit heats / cools the water in the BLANKETROL III equipment to reach this temperature. The
water circulates through the blanket and raises / lowers the pati
ent’s temperature. NOTE: In
MANUAL CONTROL MODE
the BLANKETROL
III System does not read the patient’s temperature.
Because of this, special care must be taken to monitor the patient’s temperature. As in all cases,
the patient's skin integrity must be closely monitored.
In
AUTO CONTROL MODE,
the operator specifies the patient’s Set Point temperature. (In order to
for this mode to function, the operator must first insert or attach a 400 Series probe in or to the
patient and connect the probe / probe connecting cable to the BLANKETROL III unit.) The probe
measures the patient’s temperature, and unit's microprocessor compares the patient’s temperature
reading to the specified Set Point. If the patient’s temperature reading measures below Set Point,
the BLANKETROL III System heats the water in the BLANKETROL III equipment to the highest
allowable water temperature, 42°C (107.6
°F), to raise the patient’s temperature. NOTE: The water
in the BLANKETROL III equipment will remain at 42°C (107.6°F) until the pa
tient’s temperature
reading is raised to Set Point. If the patient’s temperature reading measures above Set Point, the
BLANKETROL III System cools the water in the BLANKETROL III equipment to the lowest
allowable water temperature, 4°C (39.2°F),
until the patient’s temperature is lowered to Set Point.
When the patient’s temperature reading reaches Set Point, the system continues circulating the
water through the system, but stops heating / cooling it. If the patient's temperature reading
deviates from Set Point, the system heats / cools the circulating water again until the patient's
temperature reading reaches Set Point. As in all cases, the patient's skin integrity must be closely
monitored.
In
GRADIENT 10C
MODE,
the operator specifies the pa
tient’s Set Point temperature and the
BLANKETROL III System operates as in
AUTO CONTROL MODE
except for the following. The
system monitors the patient’s temperature and maintains the temperature of the water in the
BLANKETROL III at a maximum of 10°C (18°
F) from the patient’s temperature reading. This will
gradually
raise / lower the patient’s temperature to Set Point. When the patient’s temperature