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A Littmann stethoscope. David Littmann (July 28, 1906 – January 1, 1981) was an American cardiologist and Harvard Medical School professor and researcher. [1] The name Littmann is well known in the medical field for the patented Littmann Stethoscope reputed for its acoustic performances for auscultation.
This early stethoscope belonged to Laennec. (Science Museum, London) Early stethoscopes A Traube-type stethoscope in ivory. The stethoscope was invented in France in 1816 by René Laennec at the Necker-Enfants Malades Hospital in Paris. [1] [2] [3] It consisted of a wooden tube and was monaural. Laennec invented the stethoscope because he was ...
[2] [3] [4] The term dialysis was first routinely used for scientific or medical purposes in the late 1800s and early 1900s, pioneered by the work of Thomas Graham. The first mass-produced man-made membranes suitable for dialysis were not available until the 1930s, based on materials used in the food packaging industry such as cellophane.
A sphygmomanometer (/ ˌ s f ɪ ɡ m oʊ m ə ˈ n ɒ m ɪ t ə r / SFIG-moh-mə-NO-mi-tər), also known as a blood pressure monitor, or blood pressure gauge, is a device used to measure blood pressure, composed of an inflatable cuff to collapse and then release the artery under the cuff in a controlled manner, [1] and a mercury or aneroid manometer to measure the pressure.
René-Théophile-Hyacinthe Laennec [a] (French:; 17 February 1781 – 13 August 1826) was a French physician and musician.His skill at carving his own wooden flutes led him to invent the stethoscope in 1816, while working at the Hôpital Necker. [1]
[2] [3] It built a permanent home in 1886 at the corner of Church and Norfolk Streets using funds left by Hannah Shuttleworth. [2] The building, made of Dedham Granite and trimmed with red sandstone, opened in 1888. [2] The Dedham Infirmary, also known as the Poor Farm, built a home on Elm Street in 1898. [4] It closed in February 1954. [4]
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