Yes, artificial heart is there but it doesn't work for a long time. The maximum validity of the artificial heart is maximum of 17 months. Scientists have been researching about this matter since long time but till now no any artificial heart is replacable to our natural heart.
It is distinct from a cardiac pump, which is an external device used to provide the functions of both the heart and the lungs. Thus, the cardiac pump need not be connected to both blood circuits. Artificial heart does the same role as your natural heart does. It keeps everything running. Basically, the heart is a muscular pump that maintains oxygen and blood circulation through your lungs and body. In a day, your heart pumps about 2,000 gallons of blood.
It has several devices which controlls different functions:
- Hydraulic pump - The basic idea with this device is similar to the hydraulic pumps used in heavy equipment. Force that is applied at one point is transmitted to another point using an incompressible fluid. A gear inside the pump spins at 10,000 revolutions per minute (rpm) to create pressure.
<!--[if !supportLists]-->· <!--[endif]-->Porting valve - This valve opens and closes to let the hydraulic fluid flow from one side of the artificial heart to the other. When the fluid moves to the right, blood gets pumped to the lungs through an artificial ventricle. When the fluid moves to the left, blood gets pumped to the rest of the body.
<!--[if !supportLists]-->· <!--[endif]-->Wireless energy-transfer system - Also called the Transcutaneous Energy Transfer (TET), this system consists of two coils, one internal and one external, that transmit power via magnetic force from an external Battery across the skin without piercing the surface. The internal coil receives the power and sends it to the internal battery and controller device.
<!--[if !supportLists]-->· <!--[endif]-->Internal battery - A rechargeable battery is implanted inside the patient's abdomen. This gives a patient 30 to 40 minutes to perform certain activities, such as showering, while disconnected from the main battery pack.
<!--[if !supportLists]-->· <!--[endif]-->External battery - This battery is worn on a Velcro-belt pack around the patient's waist. Each rechargeable battery offers about four to five hours of power.
<!--[if !supportLists]-->· <!--[endif]-->Controller - This small electronic device is implanted in the patient's abdominal wall. It monitors and controls the pumping speed of the heart.
