IfU TECOTHERM NEO TN300 EN - 01.doc
Page 22 of 76
Ref No. TN300 EN-01
extracted by the cooling mattress and transferred to the circulating fluid. The central
device cooling unit extracts the heat and cools the fluid on demand.
The operator can preselect target rectal temperature within
30°C …. 38°C.
When rectally measured BCT is reaching the target t
emperature
system will reduce the
cooling power automatically. Control board microcomputer determined a sufficiently
small deviation of measured and set temperature to start power reduction.
Control system approaches set temperature without remarkably overshooting/
undershooting.
Treatment section III
Cooling Phase
Reaching set temperature the system continues treatment to automatically hold BCT of
the patient constant. Treatment time and target rectal (BCT) temperature are
preselected by the operator. System continues to hold BCT constant. It permanently
compares measured rectal temperature with set BCT. The central cooling unit is
permanently adjusting temperature of circulating fluid to
hold BCT at selected value
.
Operator may finish treatment or change treatment parameters during treatment
operation (MENU entry “
Modifying Treatment
”.) Then Control board attempts to reach
the new target temperatures as fast as possible.
Elapsed treatment times are shown in the display feature DIAGRAM.
Observing the temperature profiles the operator is able to check the temperature
constancy over the treatment time. Rectal temperature is held within a temperature
range
0,5 °C , say 33,5 °C
0,5 °C. Typical deviations are < 0,2°C.
If during treatment section III BCT of the patient is increasing/ decreasing caused by
disturbances the difference between measured and set rectal temperature increases.
The system initially will respond with more cooling power or increasing warming.
If deviation exceeds 0,5 °C in any direction, for some longer time the internal
monitoring system will detect this discrepancy. TECOTHERM NEO starts alarming.
NOTE
Ending section III TECOTHERM NEO will not alarm the operator !
After finishing this section the operator is requested to select rewarming treatment
parameters following the MENU entry
Modify current treatment
. Selection of target
rectal temperature, say 37°C, and treatment time. Starting treatment rewarming is
automatically run. The rewarming rate is shown on the display screen.
The TECOTHERM NEO system will linearly increase the BCT until selected target
temperature is reached.
System then stops further re- warming and holds BCT at the selected value.
In case of disturbances the system is responding as described in section III.
The operator can continue the treatment. TECOTHERM NEO will automatically
continue to hold patient at the selected BCT or at a modified temperature.
Operator can finish such treatment at any time.
