28-02-2013, 11:12 AM
Digital Instrument For Venous Muscle Pump Test
[attachment=52154]
INTRODUCTION:
Like any other part of the body, veins in our body can also become faulty. Faulty veins in the lower part of the body (legs) may lead to ailments such as varicose veins and venous thrombosis.
The functionality of the veins is determined through the venous muscle pump test (VMPT).
In VMPT, the patient being tested is seated on a chair and is made to perform several (normally 8 to 10) dorsal flexions in quick succession thus emptying the veins of the lower limbs.
The amount of blood pumped out provides a measure on the muscle pump capacity (MPC).
Once the dorsal flexions are stopped, the emptied veins of the leg refill with blood coming in from the capillaries. The time taken for the veins to re-fill and attain the same level as was existing at the start of the dorsal flexions is taken as the venous refilling time (VRT) .
PROBLEM DEFINITION
Design and development of a prototype unit to measure venous refilling time (VRT) and muscle pump capacity (MPC) during a venous muscle pump test (VMPT).
Apart from the measurement of VRT and MPC, the prototype unit also provides a measure on the pulse rate
Working
The sensor module sends analog signal to PIC microcontroller which depends on blood flow in the veins.
On receiving the analog signal, PIC microcontroller digitalises it and caliberates to find VRT, MPC and pulse.
The calculated values of VRT,MPC and pulse will be displayed on LCD screen and hyperterminal of PC.
Work Accomplished
Development of hardware block diagram & implementation.
Development of schematic.
Design of PCB.
Development of code for interfacing lcd and sensors.
Program development for calculation of VRT ,MPC and Pulse Rate.
Power supply unit design.
[attachment=52154]
INTRODUCTION:
Like any other part of the body, veins in our body can also become faulty. Faulty veins in the lower part of the body (legs) may lead to ailments such as varicose veins and venous thrombosis.
The functionality of the veins is determined through the venous muscle pump test (VMPT).
In VMPT, the patient being tested is seated on a chair and is made to perform several (normally 8 to 10) dorsal flexions in quick succession thus emptying the veins of the lower limbs.
The amount of blood pumped out provides a measure on the muscle pump capacity (MPC).
Once the dorsal flexions are stopped, the emptied veins of the leg refill with blood coming in from the capillaries. The time taken for the veins to re-fill and attain the same level as was existing at the start of the dorsal flexions is taken as the venous refilling time (VRT) .
PROBLEM DEFINITION
Design and development of a prototype unit to measure venous refilling time (VRT) and muscle pump capacity (MPC) during a venous muscle pump test (VMPT).
Apart from the measurement of VRT and MPC, the prototype unit also provides a measure on the pulse rate
Working
The sensor module sends analog signal to PIC microcontroller which depends on blood flow in the veins.
On receiving the analog signal, PIC microcontroller digitalises it and caliberates to find VRT, MPC and pulse.
The calculated values of VRT,MPC and pulse will be displayed on LCD screen and hyperterminal of PC.
Work Accomplished
Development of hardware block diagram & implementation.
Development of schematic.
Design of PCB.
Development of code for interfacing lcd and sensors.
Program development for calculation of VRT ,MPC and Pulse Rate.
Power supply unit design.