Console Components; Controls And Display Screen - ZOLL IVTM Operation Manual

Patient temperature feedback is used to control the console. The patient's temperature is measured by an
indwelling YSI 400 thermistor temperature sensor. In response to the patient's measured temperature, the con-
sole employs both cooling and heating. Cooling occurs when the patient's temperature is above the set point
target temperature. Heating occurs when the patient's temperature is below the set point target temperature.
The amount of heating or cooling power is proportional to the difference in temperature between the set
point target temperature and the patient's measured temperature.
A basic diagram of the System is illustrated in Figure 2.1.
1. Saline bag
2. Peristaltic pump
3. Air trap
4. Heat exchange coil
5. Coldwell
6. Coolant pump
7. Chiller & Heater
8. Catheter
9. Patient
10.Pin wheel flow indicator
Figure 2.1. Simplified Flow Diagram

Console Components

Controls and Display Screen

The display head contains four buttons and one knob used to access functions and adjust settings with the aid
of the menus and messages displayed on the screen. The controls and display screen are illustrated in
Figure 2.2 and explained in the following text.
Display Screen
The display screen is a backlit color LCD panel that can be easily read in all ambient lighting conditions. It is
used to display status, menus, messages, alarms, and patient temperature trend graphs.
The display head is attached to the mast by an adjustable swivel/tilt mounting clamp. You can adjust the tilt
and rotation of the display head and lock it into position by using this clamp.
12