Stethoscope is the most commonly used diagnostic tool for internal and external women and children physicians. It is the symbol of physicians. Modern medicine begins with the invention of stethoscope. Stethoscope has been continuously improved since its application in clinical practice on March 8, 1817, but its basic structure has not changed much. It mainly consists of the pickup part (chest piece), the conductive part (hose) and the listening part. (earpieces) composition.

Types of stethoscope

1.Acoustic Stethoscope

The Acoustic Stethoscope is the earliest stethoscope and a medical diagnostic tool familiar to most people. This stethoscope is a symbol of the doctor, who wears it around his neck every day. Acoustic stethoscopes are the most commonly used.

2.Electronic Stethoscope

The electronic stethoscope uses electronic technology to amplify the body's sound, overcoming the high noise of the acoustic stethoscope. The electronic stethoscope needs to convert the electrical signal of the sound of the sound and then be amplified and processed for optimal listening. They are based on the same physical principles as acoustic stethoscopes.

The electronic stethoscope can also be recorded with a computer-assisted auscultation plan to record the heart's sound pathology or innocent heart murmurs.

3.Fetal Stethoscope

In fact, the fetal stethoscope or fetal mirror is also a kind of acoustic stethoscope, but it is beyond the ordinary acoustic stethoscope. The fetal stethoscope can hear the sound of the fetus in the belly of the pregnant woman. It is very beneficial for the care during pregnancy.

4.Doppler Stethoscope

A Doppler stethoscope is an electronic device that measures the Doppler effect of reflected waves from ultrasound waves in body organs. The motion is detected as a change in frequency due to the Doppler effect, reflected waves. Therefore, Doppler stethoscopes are particularly well suited for handling moving objects such as beating hearts.