31-03-2010, 02:56 PM
Nano Sensors :To Detect Heart Attack
Prepared by:
Umesh B.P.
About sensors
Sensors are
The Differece B/w Ordi..N Nano
Heart attacks, a cardiac disease, are on the rise in India owing to improper food habits and sedentary lifestyle of the people, especially in urban areas and hazardous occupations causing stress and strain
The device with nano sensors can not only detect a heart attack, but also transmit its signal through a wireless interface to doctors located remotely for quick diagnosis and treatment,
"The three-dimension sensors use Nano Electrical Mechanical System (NEMS) of its polymer material to convert any abnormal movement in the heart muscles into an electrical signal for detecting a cardiac symptom,
a cantilever in the sensor using tiny or nano-particles of the polymer to measure the stress symptom (myocardial infarction) in the heart and convert it into an electrical signal
In a polymer generate electrical current through biochemical process of the enzymes produced in the heart.
"When the heart goes through severe stress or strain, it suddenly releases enzymes (protein molecules) in excess, causing pressure on its blood vessels and exertion, which manifest as chest pain, perspiration or even a cardiac arrest.
