Phonendoscope

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The following article is from The Great Soviet Encyclopedia (1979). It might be outdated or ideologically biased.

Phonendoscope

a medical instrument used for listening to cardiac, respiratory, and other sounds originating within the body (that is, for the same purposes as the stethoscope). A phonendoscope is always binaural, consisting of two tubes whose ends are inserted into the ears. It differs from the flexible stethoscope in that the auscultatory chamber is covered with a rigid membrane for intensifying the sounds.

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References in periodicals archive ?

He began by using an ordinary binaural stethoscope with a Ford's type bell, but soon substituted a Phonendoscope (7).

This is accomplished by strapping the transmitter of a phonendoscope to the precordium.