Simplified biomedical system for artificial defibrillator

Abstract

Many people al over the world suffer from heart ailments causing premature death n modern times due to stress poor eating habits and also due to hereditary factors as well. Severe changes for the heart beat pattern termed fibrillation is easily identified by using an Electrocardiograph : I C Ci). Of the two well known fibrillation conditions viz. Atrial and Ventricular, the latter is t h e worst just showing a zig - zag ECG pattern, causing death if not reverted back to normal at soon as possible. This reversing process is t e r m e d as defibrillation.// The defibrillator is an equipment designed give a mild electrical impulse in case of atria fibrillation and a large impulse of the order of several hundred joules in case of ventricular fibrillation.// The principle used in the defibrillate or is to store energy by means of a capacitor and to give a shock in a single impulse through two electrodes kept on the chest of t h e patient.// It has been found that such equipment is to expensive and even ineffective for use in developing countries like Sri Lanka. This had resulted in a cardiologist requesting the university to fabricate an equipment which is not too expensive but will meet the local need. By discussing with a few cardiologists it was identified that it would be more appropriate to give a series of shocks at intervals first and f that does not work increase the energy of the next series of pulses.// Taking into consideration the above mentioned factors, aprototype