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Other uncategorized cookies are those that are being analyzed and have not been classified into a category as yet. Stethoscope: Imhotep: Ancient Egypt (circa 2980 B.C.) The use of elevators in everyday life keeps people from facing long climbs up several flights of stairs. He was inspired to create the device after noticing that placing his ear against a woman's chest enabled him to hear her heart and lungs better than when he simply placed his ear on her chest. The Littmann Stethoscope: The Gold Standard For Stethoscopes The stethoscope has two different heads to receive sound, the bell and the diaphragm. Drew also discovered that plasma could be transfused between persons regardless of blood type and helped the British government establish its first national blood bank. He was inspired to create the device after noticing that placing his ear against a womans chest enabled him to hear her heart and lungs better than when he simply placed his ear on her chest. Forgetting to do so led to multiple accidents as people fell down elevator shafts. On Aug. 19, 1819, when Lannecs magnum opus on the stethoscope, De lAuscultation Mdiate, was published, the two-volume book caused hardly a stir in the medical world even at the price of 13 francs, with a stethoscope thrown in for an extra 3 francs. The Stethoscope: An Instrument Born of Embarrassment. An active philanthropist, Walker also was an early champion of employee development and offered business training and other educational opportunities to her workers as a means of helping other Black women achieve financial independence. The stethoscope is a medical device for auscultation, or listening to internal sounds of an animal or human body.It typically has a small disc-shaped resonator that is placed against the skin, and one or two tubes connected to two earpieces. These 10 innovators are just a few of the many Black Americans who have made important contributions to business, industry, medicine, and technology. Poetic Goddess Black Inventors & Their Inventions: Imhotep - The Stethoscope I will be starting a segment of Black Inventors and Their Inventions, featuring the great men and women who contributed and innovated the world we live in.