History of Stethoscope

 

Stethoscope Market

The word stethoscope is derived from the two Greek words, stethos (chest) and scopos (examination). Apart from listening to the heart and chest sounds, it is also used to hear bowel sounds and blood flow noises in arteries and veins.

Since mankind first began to study human physiology, and the physical characteristics associated with various ailments, it has been obvious that the heart plays a crucial role in our bodies. The sounds it makes, as well as the sounds that the surrounding organs, such as the lungs, make can be crucial indicators when examining a patient. The act of listening to these sounds, known as auscultation, has been refined using even more powerful tools to aid physicians in this crucial examination.

In the early 1800’s, and prior to the development of the stethoscope, physicians would often perform physical examinations using techniques such as percussion and immediate auscultation. In immediate auscultation, physicians placed their ear directly on the patient to observe internal sounds.

According to Coherent Market insights the Stethoscope Market Size, Share, Outlook, and Opportunity Analysis, 2019 - 2027.

Rene-Theophile-Hyacinthe Laennec Drawings stethoscope 1819

Drawings of the early stethoscope by Rene Theophile Hyacinthe Laënnec, 1819.

This technique suffered from several drawbacks, the foremost being that it required physical contact between the physician and the patient and proper placement of the ear. In addition, the sounds observed by the physician were not amplified in any way, creating the possibility of missing key sounds that might indicate potential illness. Finally, the act of performing immediate auscultation could be awkward for both the physician and patient.

To resolve the limitations of immediate auscultation, a French doctor named Rene Theophile Hyacinthe Laënnec (1781–1826) at the Necker-Enfants Malades Hospital in Paris invented the first stethoscope in 1816. During an examination of a patient, he was afforded few diagnostic clues from application of a hand to the chest or the commonly used percussion method. Reluctant to perform immediate auscultation on the young female patient, he used a rolled sheet of paper to create an aural tube and facilitate auscultation. He was excited to discover that the heart sounds were clearly audible, and this discovery later lead to the development of the first device specifically for this purpose. The first stethoscope consisted of a wooden tube and was monaural. Similar to a hearing aid known as an ear trumpet, it allowed the physician to more comfortably perform auscultation.