Do you know what kinds of stethoscopes?
With the continuous development of modern technology, the medical equipment used by doctors has also been continuously upgraded. Take the stethoscope as an example. It was invented by French doctor Ren¨¦ Laennec in 1816. It mainlyconsists of wooden hollow straight tubes. Later, it was continuously improved during the clinical application process, but its basic structure did not change.Stethoscope mainly include the pickup part (chest piece), the conductive part (hose) and the listening part (ear piece).
In the past, there was no difference in the auscultation effect of stethoscopes. However, nowadays, there are many kinds of stethoscopes. The different between different grades of stethoscopes are not obvious when hearing normal sounds, but there is a big different when listening to the noise of organ. In general, the higher quality of stethoscope, the stronger ability to distinguish noise and the longer it takes to use. A clinician should have at least one better quality stethoscope.
When you choose to buy a stethoscope, you must understand the difference between the different stethoscopes, what features of the stethoscope you want, and carefully select the stethoscope according the features you need.
At present, the types of stethoscope mainly include: Acoustic stethoscope, Photographing stethoscope, Fetal stethoscope, Doppler stethoscope, and Electronic stethoscope.
Acoustic stethoscope
Acoustic stethoscope is the earliest stethoscope, commonly referred to as traditional stethoscope. The principle is that when the vibration of the body causes the film to make a sound, the probe gathers the sound and then passes through the hose to the ear. Traditional stethoscopes have shortcomings such as get less information, large interference, a small auscultation range and so on.
Photographing stethoscope
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 a stethoscope headset. Doctor can do more in-depth research, even remote diagnosis.
Fetal stethoscope
The fetal stethoscope is a type of acoustic stethoscope, but it is detached from the ordinary acoustic stethoscope. In the future trend, fetal auscultation will be popularized in every family.Pregnant women can detect by themselves. The fetal stethoscope has no radiation, no ultrasound, no coupling agent, which can be proceeded through light-weight clothing and auscultation will not affect the baby.
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. Therefore, Doppler stethoscopes are particularly suited for handling moving objects such as a beating heart.
Electronic stethoscope
The electronic stethoscope uses electronic technology to amplify the sound, overcomes the disadvantages oftraditional stethoscope, whichcan be connected with the terminal to analyze the patient's body sound. Electronic stethoscopes have become the trend of the day. The foreign countries have begun to spread.