Riva-rocci sphygmomanometer, circa 1910

Riva-rocci sphygmomanometer, circa 1910

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Credit: SCIENCE PHOTO LIBRARY

Caption: Mercury sphygmomanometer by Scipione Riva-Rocci with its box, owned by Dr. Herbert French. This sphygmomanometer (invented in 1896) was used to measure blood pressure; the cuff (black) would be placed around the patient's upper arm whilst the physician placed their finger on the wrist to feel for the radial pulse. The cuff was inflated using the rubber bulb (black) until the pulse could no longer be felt. The level of the mercury in the vertical glass tube (left) would indicate the pressure in the cuff. The pressure would be released from the cuff slowly and the point at which the radial pulse returned would be read from the level of the mercury and this indicated the systolic blood pressure. This device is English and dates from around

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Keywords: 1900s, 1910, 20th century, antique, apparatus, blood pressure, british, cardiovascular, cuff, device, devices, dr herbert french, english, equipment, glass, green background, historical, history, instrument, instruments, measurement, measures, measuring, medical, medical instrument collection, medicine, mercury, pressure, pulse, riva rocci, riva-rocci, rubber, sphygmomanometer, sphygmomanometers, sphygmometer, sphygmometry, systolic, twentieth century

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