The core devices of stethoscope mainly include pickup, amplification and filtering circuit, processing chip and Bluetooth module.
The main function of pickup is to collect auscultation sound, and its function is equivalent to "microphone". The amplifying and filtering device is a "sound box" for amplifying auscultation sound. The processing chip is used to reduce noise interference and ensure ideal sound data.
Finally, the Bluetooth module transmits the sound signal to the computer for storage. The auscultation sound data collected by Bluetooth stethoscope can be transmitted to the computer or connected to the HIS system (hospital information system) of the hospital to match the patient's medical records. ?
Stethoscope is an acoustic medical device, which is used to auscultate or listen to the internal sounds of animals or human bodies. It usually has a small disk resonator placed next to the chest and two tubes for connecting headphones. Usually used to listen to lung sounds and heart sounds.
It is also used to listen to the blood flow of intestine, arteries and veins. When used with sphygmomanometer, it is usually used to measure blood pressure. Less commonly, a "mechanical stethoscope" equipped with a rod-shaped chest piece is used to listen to internal sounds generated by the machine (for example, sounds and vibrations generated by worn ball bearings).
For example, the internal parts of an automobile engine can be diagnosed by listening to the sound. Stethoscope can also be used to check whether the scientific vacuum chamber leaks or not, and other small acoustic monitoring tasks. A stethoscope that enhances auscultation sound is called a stethoscope.
Extended data
Classification:
1, acoustic stethoscope
Acoustic stethoscope is the earliest stethoscope and a medical diagnostic tool that most people are familiar with. This stethoscope is a symbol of the doctor, who hangs it around his neck every day. Acoustic stethoscope is the most commonly used.
2. Electronic stethoscope
Electronic stethoscope uses electronic technology to amplify gross sound, which overcomes the bug of loud noise of acoustic stethoscope. Electronic stethoscope needs to convert acoustic signals and then amplify them to get the best listening effect.
Compared with the acoustic stethoscope, they are all based on the same physical principle. Electronic stethoscopes can also be used with computer-aided auscultation programs to analyze recorded heart sounds, pathological or harmless heart murmurs. ?
Step 3 shoot a stethoscope
Some electronic stethoscopes are equipped with direct audio output, which can be used to connect external recording devices, such as laptops or MP3 recorders. Save these sounds and listen to the previously recorded sounds through the stethoscope headphones, so that doctors can further study and even diagnose them remotely. ?
4. Fetal stethoscope
In fact, 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 voice of the fetus in the pregnant woman's stomach. It is very beneficial to pregnancy care.
5. Doppler stethoscope
Doppler stethoscope is an electronic device that measures the Doppler effect of ultrasonic waves reflected from body organs. Due to the Doppler effect, the detected change of motion frequency will reflect the wave. Therefore, the Doppler stethoscope is especially suitable for dealing with moving objects, such as the beating heart.
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