Importance

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Abstract

An electronic stethoscope is disclosed having a palm sized electronic component case with operating switches provided on opposite sides of the case for ease of operation. The stethoscope includes a pickup head coupled to an electronic microphone by means of a flexible tubular acoustic member. A battery powered amplifier and filter circuit is provided within the component case and the amplified and filtered output of the microphone is coupled to a miniature speaker sealed within an airtight container within the case. A rotatable tubular member having radial apertures therein is coupled through the sealed container and out each side of the component case. A binaural headpiece is acoustically coupled to each end of the rotatable member and is thus free to rotate with respect to the case, allowing the stethoscope to fold for storage. In a preferred embodiment of the present invention, electronic timing means are provided for automatically removing electrical power from than amplifier circuit after a predetermined period of time and for generating an audible tone at preselected intervals for pulse rate measurement.

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First Claim