Stethoscope Introduction:
1. Main functions of stethoscope:
It is used to collect and amplify sounds emanating from the heart, lungs, arteries, veins and other internal organs
2. Common types:
Single-use stethoscope, dual-use stethoscope, triple-use stethoscope, multipurpose stethoscope and electronic stethoscope.
The stethoscope is mainly used in:
Mainly used for auscultation from the body to the surface of the sound, through the interpretation of the heard sound, to diagnose and evaluate the patient's condition. For example, through the auscultation of the heart can determine whether the heart has a murmur, abnormal heart rhythm, etc., and can judge the general situation of most heart diseases; Through the stethoscopy of the abdomen, according to the intestinal sounds heard, can initially determine whether there is intestinal obstruction and other conditions: during pregnancy, you can also use a stethoscope to listen to the fetal heart sounds and fetal heart murmurs, etc.
How a stethoscope works:
The principle of all kinds of stethoscopes is that the vibration between substances is transmitted to the aluminum film in the stethoscope, which changes the frequency and wavelength of the sound, so that it can reach the range that the human ear can feel, and at the same time, it shields other sounds, so that people can hear more clearly. Among them, the vibration frequency that the human ear can feel is 20-20000Hz.
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