Quick Answer. Cardiotonic drugs are substances that increase the contracting mechanism within the heart, thereby causing more blood to be pumped throughout the circulatory system. These drugs usually affect intracellular calcium levels in the heart muscle to achieve the desired increase in muscle action.
Miniaturized hearing aids that will fit into the ear canal. Miniaturization tech could also be used to monitor pulse, blood-pressure, glucose, ECG via wireless, be used in implants, pacemakers. February 17, 2014. Fraunhofer researchers pack a total of 19 hearing-aid components (left) into their new microsystem (right).
You can wear hearing aids behind your ear, in your outer ear, in your ear canal , or completely implanted in the ear. The kind of hearing aid you choose depends on many things, including your degree of hearing loss, your doctor or audiologist's advice, and what kind of hearing aid you want. See a picture of different styles of external hearing aids .