Stethoscopes usually consist of an auscultation head, a guide tube, and an ear hook. It is used to collect and amplify sounds from the heart, lungs, arteries, veins, and other internal organs.
Types of stethoscope:
The Acoustic Stethoscope is the earliest stethoscope and a medical diagnostic tool familiar to most people. Acoustic stethoscopes are the most commonly used.
The electronic stethoscope uses electronic technology to amplify the body's sound, overcoming the bug of high noise of acoustic stethoscope. The electronic stethoscope needs to convert the electrical signal of the sound of sound waves and then be amplified and processed for optimal listening.
Some electronic stethoscopes have direct audio output that can be used to connect to external recording devices, such as laptops or MP3 recorders. Save these sounds, listen to previously recorded sounds through stethoscope headset, and the doctor can do more in-depth research, even remote diagnosis.
In fact, the fetal stethoscope or fetal endoscope 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.
A Doppler stethoscope is an electronic device that measures the Doppler effect of ultrasonic waves reflected from body organs. Doppler stethoscopes are particularly well suited for handling moving objects.