Sphygmomanometer, circa 1920 C017 / 6944
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Sphygmomanometer, circa 1920 C017 / 6944
Martins Improved Sphygmomanometer with its case, dating from 1920. This instrument is made from glass and mercury by S. Maw, Son and Sons. The sphygmomanometer was originally invented by Samuel Siegfried Karl Ritter von Basch in 1881. It was used to measure blood pressure; the cuff (brown) would be placed around the patients 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 glass tube (centre) 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
Science Photo Library features Science and Medical images including photos and illustrations
Media ID 9229149
© SCIENCE PHOTO LIBRARY
1900s 1920 1920s Antique Apparatus Blood Pressure Cardiovascular Cuff Device Devices Glass Green Background Instrument Instruments Measurement Measures Measuring Mercury Pressure Pulse Rubber Sphygmomanometer Sphygmometer Sphygmometry Twentieth Century Martins
EDITORS COMMENTS
This print showcases a remarkable piece of medical history - the Sphygmomanometer, circa 1920. Manufactured by S. Maw, Son and Sons, this instrument is an exquisite combination of glass and mercury. Originally invented in 1881 by Samuel Siegfried Karl Ritter von Basch, the sphygmomanometer revolutionized blood pressure measurement. In this image, we see the complete set with its case, giving us a glimpse into medical practices from the early 20th century. The brown cuff would be securely placed around the patient's arm while the physician carefully felt for their radial pulse on the wrist. Using the black rubber bulb attached to it, they would inflate the cuff until no pulse could be detected. The central feature of this apparatus is undoubtedly the glass tube filled with mercury. As pressure was released slowly from the cuff, physicians closely observed at what level in this tube did the radial pulse reappear. This indicated crucial information about blood pressure levels. With its green background providing a striking contrast to its intricate design and historical significance, this antique measuring device transports us back to an era when cardiovascular health assessment relied on such ingenious instruments. As we admire this relic from medical history captured beautifully in print form by Science Photo Library, let us appreciate how far we have come in our understanding and monitoring of blood pressure today thanks to advancements in technology and innovation within healthcare systems worldwide.
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