The invention relates to a device for controlled cardiopulmonary resuscitation, which allows the user to reanimate a human body quickly and simply during a cardiac arrest. The geometric dimensions of the claimed device are comparatively small and lie between approximately 10 and 25 cm in diameter and approximately 6 and 12 cm in height. During use, a force K is exerted onto a first force transmission means, a clearly audible signal being generated when a maximum adjustable force exertion Kmax is reached. Said clearly audible signal is primarily generated by the interaction of oscillatory elements of said device.