René Laennec invents the stethoscope in Paris

Background. René Laennec, a French medical doctor and musician, invented the stethoscope in 1816 while working at the Hôpital Necker. His skill at carving his own wooden flutes led him to invent the device. In the same year, he was consulted by a young woman laboring under general symptoms of diseased heart, in whose case percussion and the application of the hand were of little avail on account of the great degree of fatness.

Mechanism and Naming. Laennec named the device the "stethoscope," derived from Greek terms for chest and look, and described its use as "mediate auscultation." He often referred to it as "the cylinder." The device functioned as an intermediate tool between the individual's body and the physician's ear, allowing for the listening of internal sounds such as heart, lung, and intestinal noises.