Stethoscope

Stethoscope Introductions

1. CE and ISO available
2. Color: a variety of colors to choose from (black, red, blue, purple, green, orange, yellow, gray)
3. Ear head: aluminum alloy Diameter: 4.7cm, 3cm
4. Earhook: Aluminum
5. Pipe: PVC
6. The principle of the stethoscope is that the vibration transmission between substances participates in the aluminum film in the stethoscope, and the air alone changes the frequency and wavelength of the sound, reaching the “comfortable” range of the human ear, and at the same time shielding other sounds, and “hearing” more clear. The reason why people hear sound is that the so-called “sound” refers to the mutual vibration of substances, such as the air vibrating the tympanic membrane in the human ear, which is converted into brain currents, and people can “hear” the sound. The vibration frequency that human ears can feel is 20-20KHZ.
7. There is another standard for human perception of sound, which is volume, which is related to wavelength. The intensity range of normal human hearing is 0dB-140dB.
8. The attenuation limit of the frequency response curve of the sound attenuation stethoscope is as follows
   In the range of 100Hz~500Hz:
   The outer diameter of the ear head is ≤35mm, and the attenuation is ≤30dB based on the test sound source;
   The outer diameter of the ear head>35mm, with the test sound source as the reference attenuation <16dB;
   In the range of 500Hz~1000Hz:
   The outer diameter of the ear head is ≤35mm, and the attenuation is ≤25dB based on the full test sound source;
   The outer longitude of the ear head>35mm, with the test sound source as the reference attenuation <20dB;
   The elasticity of the earhook is appropriate. When the two earplugs are separated by 140mm, the elasticity value is in the range of 1.4N~5.0N.
   The earhook has good elasticity. When the two earplugs are separated by 300mm, the deformation distance after recovery is <10mm.
   The wall thickness of the sound guide tube is more than 1.5mm, and the sound insulation and sound transmission effect is good.

Stethoscope Advantages

1. Stethoscope is very small and exquisite
2. It’s very portable and easy to use
3. There are hard PVC earplugs, multiple parts can be replaced, easy assembly.

Stethoscope Indications

1. Stethoscope is used to auscultate the sound changes of the human heart, lungs, and organ activities;
2. The stethoscope is to distinguish vital signs such as heartbeat and blood pressure;
3. Double-headed professional stethoscope can detect heart and breath sounds.

Stethoscope Specifications And Packing

Single box:175 pcs/carton
Gross weight: 16.5KGS/carton
Volume: 52*30*36.5cm/carton
OEM support