LE 5002 Non Invasive Blood Pressure Meter
USER MANUAL
7
4. INTRODUCTION
The LE 5002 is a microprocessor-based instrument with memory, specifically designed
to take non-invasive blood pressure readings on experimental animals (mice, rats or
dogs).
Figure 6. LE 5002 Non-Invasive Blood Pressure Meter.
The system used for taking measurements is based on the sphygmomanometric
technique (used to take pressure in human beings). Thus, the unit features a pressure
cuff, whose function is to occlude the passage of blood in the animal’s tail, and a
transducer, which captures blood pulses. Generally, both are placed on the animal’s tail
to operate over the caudal artery.
The LE 5002 detects the systolic or maximum pressure (SP) values, diastolic or
minimum pressure (DP) values and the mean value calculated as:
)
·(
33
.
0
DP
SP
DP
MP
+
+
=
1
Moreover, heart rate (HR) is also picked up by the transducer. Its value is displayed
continuously, and then stored along with the corresponding systolic, diastolic and mean
pressure values. A measurement is comprised of the blood pulse (heart rate) and systolic
and diastolic pressure values.
All measurements (up to 6000 data) are memorised internally (they are not deleted
when the unit is switched off) so they can be retrieved and displayed in the LE 5002 or
sent to a PC using the RS 232 communication protocol and the
SEDACOM program
(option to be purchased separately).
Note: the RS232 communication cable provided with the device is used for any
connection of the device with associated software (SEDACOM, etc.). When the device
is used without software in first instance, this cable need to be preserved and kept in
secure place in case the need of using the system with a software is required in the
future. In this last case, if the user lost the cable, a new one should be purchased to his
local sales delegate, ref. CONRS232). The warranty time of this cable is the same than
the warranty time of the device.
1
From Ciba Geidy Scientific tables , Ed. C Lenther, 1990
