Defibrillator

 

Defibrillator is mainly used for cardiovascular irregularities. Our heart needs electrical pulses from our nerves to beat and pump blood properly. It stops fibrillation, the useless trembling that a person can have caused by the heart.

 

It works by using high-voltage ( 200-1000 volts )  to pass an electric current through the heart to stop the irregular pulses from the nerve and stop the fibrillation. The patient's heart receives around 300 joules of electrical energy. The current must flow through the heart to work. The surface of the paddles of the defibrillator is made up of metal because it is a good conductor of electricity. Metals have sea of electrons that enables them to conduct electricity. But the handle of the paddles are made up of plastic because it is an insulator, which means it is a poor conductor of electricity so the person using it will not get shock.

 

For further information, see the video below :