Stethoscope

stethoscope

Single head

Double head

product description

It usually consists of an auscultation head, a sound tube, and an ear hook. A (frequency) nonlinear amplification of the collected sound.

Type of stethoscope

Acoustic Stethoscope: 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.

Electronic Stethoscope: The electronic stethoscope is an electronic technique that amplifies the sound of the body and overcomes 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 murmur. An electronic stethoscope that photographs some of the stethoscope has a direct audio output that can be used to connect to an external recording device, such as a laptop or MP3 recorder. Save these sounds, listen to previously recorded sounds through a stethoscope headset, and the doctor can do more in-depth research, even remote diagnosis.

Fetal Stethoscope: In fact, the fetal stethoscope or fetal mirror is also a kind of acoustic stethoscope, but it is detached from 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.

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.

Stethoscope effect

Stethoscope effect is common in in-ear headphones, that is, the earplug wire or unit is subject to external collision or air friction. The vibration generated is directly transmitted through the earplug wire (the wire in the ear is generally harder, which is beneficial to conduct vibration) and is transmitted to the ear canal. Very unpleasant voice. The rear-mounted headphones can greatly improve the stethoscope effect. Personally, using a clip to clip the headphone cable to the clothes almost completely eliminates the stethoscope effect.