PROBLEM TO BE SOLVED: To provide an electronic stethoscope suitable for auscultating a cardiac sound, a cardiac noise, and a respiratory sound of a human body without capturing ambient noise.SOLUTION: An electronic stethoscope for amplifying and listening to a vibration sound in an audible range generated from the inside of a human body by being brought into contact with a human body surface is composed of a chest piece, a body part, and an earphone part including a vibrator. The body part includes a microphone arranged at a sound collection part of the chest piece, a signal processing circuit for converting a sound reception signal from the microphone to an electric signal and amplifying it, a drive circuit for driving the vibrator, and a power supply part for driving the microphone, the signal processing circuit, and the drive circuit.SELECTED DRAWING: Figure 1COPYRIGHT: (C)2016,JPO&INPIT【課題】 周囲の雑音を捉えることなく、人体の心音、心雑音、及び呼吸音の聴診に適した電子聴診器を提供する。【解決手段】 人体表面に接触して人体内部から発生する可聴域の振動音を増幅させて聴く電子聴診器において、チェストピースと本体部と振動子を含むイヤホン部から構成されており、さらに、本体部は、チェストピースの集音部に配置されるマイクと、マイクからの受音信号を電気信号に変換して増幅する信号処理回路と、振動子を駆動する駆動回路と、マイク、信号処理回路、及び駆動回路を駆動させる電源部を含む。【選択図】図1
