Name/Title
STETHOSCOPE, BAZZI BIANCHIEntry/Object ID
2020.19.15Description
1894 - Eugenio Bazzi, an Italian physicist and Aurelio Bianchi, a Professor of Pathology developed the Phonendoscope.. It was the first stethoscope to incorporate the use of a rigid diaphragm membrane. The Phonendoscope was a small round unit with two diaphragm membranes placed next to each other. A small solid rod which had a small gutta-percha chest piece was attached to the diaphragm. The unit could be used with or without the localizing rod. There were two long runner earpieces that attached to the top of the unit. It was completely collapsible and measured only three inches in diameter. Bianchi developed this with the idea that the small chest piece could fit between the ribs and convey better sounds. The Phonendoscope was marketed in America by the G. Pilling Company of Philadelphia. In spite of these advantages, its use never became widespread.
