Listening to the sounds of the body is an old diagnostic technique, reported as early as the 16th century BC in an ancient Egyptian work known as the Ebers Papyrus. For centuries though, the only way to assess the sounds of the human body was to use an unaided ear on the patient’s chest. René Théophile Hyacinthe Laennec introduced mediated auscultation by inventing a stethoscope, a device to aid a physician in listening to the chest sound.
The invention was born in 1816 when the young doctor, reluctant to use a direct auscultation method on a person with a higher weight, rolled a piece of paper into a tube in the moment of need and carved the tool from wood shortly thereafter. The sound not only travelled through the improvised tool, but it was also easily and clearly audible. Thus, Laennec started to use the new device from that moment on.