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History of the Stethoscope
Oct 31, 2017

The invention of the world's first stethoscope is more than 190 years old. 1816 Winter, Necker General Hospital of Paris, France (Hôpital Necker) Doctor Renaic (French: René-théophile-hyacinthe Laennec, February 17, 1781 to August 13, 1826) Invented the stethoscope (Stéthoscope), March 8, 1817, he pioneered the use of stethoscope to diagnose various chest diseases.

In 1840, British physician George Phillip Carmen improved the Renneck design of a single ear stethoscope. Carmen believes that binaural diagnosis is more accurate. The stethoscope he invented was to connect two lugs with two flexible rubber tubes to the handset that could be contacted by the body, and the stethoscope was a hollow mirror-shaped cone. Carmen's stethoscope helps physicians to hear the internal sounds of the veins, arteries, hearts, lungs, and intestines, and even the heart sounds of the fetus.

In 1937, Kyle improved Carmen's stethoscope again, adding a second handset that could touch the body, creating a stereo effect called a duplex stethoscope that could pinpoint the patient's lesion. Unfortunately, Kyle's improvements were not widely used. The advent of an electronic stethoscope, which amplifies sound and enables a group of physicians to hear the voice of the person in the diagnosis, can also record the murmur of the heart, close to the normal sound. Although the new stethoscope continues to be available, physicians generally love to use the old stethoscope, which is designed by Renneck and modified by Carmen.

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