Abstract: Limb blood as a flow permanent flow per beat and the volume of cardiac output Safe method Non-reactive Advance analog amplifier Microprocessor controller Flexible output signal

1. Design an Impedance
Plethysmography System for
Measuring Limb Blood Flow
C. CORCIOVA1 , R. CIORAP1 , D. MATEI1 AND A.
SALCEANU2 1 „GR. T. POPA” UNIVERSITY OF MEDICINE
AND PHARMACY, FACULTY OF MEDICAL
BIOENGINEERING IASI, ROMANIA 2 „GH. ASACHI”
TECHNICAL UNIVERSITY OF IASI, ROMANIA

2. Abstract
 Limb blood as a flow permanent flow per beat and the volume of cardiac output
 Safe method
 Non-reactive
 Advance analog amplifier
 Microprocessor controller
 Flexible output signal

3. Material and Methods:
It is depend upon 3 blocks:
 Microcontroller
 Acquisition circuit
 Processing block

4.  Periodic current signal to the body part
 Develop a pulse tile impedance variable of the tissue

5.  MSP430
 Ultra low power
 Combine controller and flexible clock signal
 16 bit wide
 Inter changeably
 Similar like 8 bit

6.  Easy to operate
 NI USB 6009
 Converter

7. Result
 Calculate algorithm by using MATLAB
 20 clinical volunteers
 Community of the ethics
 Calculate limb blood parameter flow per beat and measure in percentage
 Average over 6 heartbeats

8. E2 and E3 by electrodes of the dynamics