The invention relates to a device (1) for a controlled cardio-pulmonary resuscitation, said device enabling the user to carry out a quick and uncomplicated resuscitation of a human body in the event of a cardiac arrest. The geometric dimensions of the device (1) according to the invention are comparatively small, ranging approximately from 10 and 25 cm in diameter and approximately 6 to 12 cm in height. During use, a mechanical pressure (F) is exerted onto a first pressure transmitting means (2, 22), said mechanical pressure generating a signal (S3, S4), which is perceptible to human organs, upon reaching a maximal exerted force (Fmax), wherein the signal is triggered by a spring element (24, 44) which is arranged between the pressure transmitting means (2, 22) and the base plate (3, 33).