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).
Behind the ear (BTE) hearing aids. BTE aids have an earmould that fits snugly inside your ear, while the rest of the aid rests behind your ear. Some models have twin microphones, which let you switch between all-round sound and a more directional setting that helps you focus on what you want to hear in noisy places.