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The Stethoscope

99% Invisible

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Leinneck's Cylindrical Stethoscope

Leinneck's original stethoscope looks pretty different from the ones we're used to today. It's a long tube-like cylinder that looks like a small handheld telescope. Leinneck started using his new invention to listen to the heart sounds and the breathing sounds of all of the patients in his hospital. And he started to invent words to describe the sounds because nobody had heard these sounds before.

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