How to choose a medical stethoscope
Add Time£º2019/6/28 14:04:46
1, the difference in folding effect
In general terms, the bigger and heavier the stethoscope, the better the sound pickup effect; on the contrary, the smaller and lighter the lighter, the more convenient the carrying, the dazzling new stethoscope is designed to solve this contradiction.
2, folding auscultation size
The larger the contact surface between the auscultation head and the body, the better the sound picked up. However, the surface of the human body has a curvature. If the chest piece is too large, the head cannot be completely in contact with the human body. The sound can not only be picked up well, but also leaks out of the gap. Therefore, the size of the auscultation head should be based on clinical needs. At present, the diameter of the stethoscope chest is almost uniform between 45-50 mm, and the special diameter such as the pediatric chest is 30 mm, and the newborn is 18 mm.
3, folding auscultation material
The material plays an important role in the sound. The sound is transmitted through air or matter, and eventually the heat is lost. The transmission of sound waves has almost no attenuation in heavy metals, and is easily attenuated in lighter metals or plastics. Therefore, high-grade stethoscopes must use heavy metals such as stainless steel or titanium.
4, folded conductive part
The sound pipeline is also very important. The larger the inner diameter of the tube, the shorter the length, and the thicker the tube wall, the better the effect of the stethoscope. The international standard length is 27 inches.
In general terms, the bigger and heavier the stethoscope, the better the sound pickup effect; on the contrary, the smaller and lighter the lighter, the more convenient the carrying, the dazzling new stethoscope is designed to solve this contradiction.
2, folding auscultation size
The larger the contact surface between the auscultation head and the body, the better the sound picked up. However, the surface of the human body has a curvature. If the chest piece is too large, the head cannot be completely in contact with the human body. The sound can not only be picked up well, but also leaks out of the gap. Therefore, the size of the auscultation head should be based on clinical needs. At present, the diameter of the stethoscope chest is almost uniform between 45-50 mm, and the special diameter such as the pediatric chest is 30 mm, and the newborn is 18 mm.
3, folding auscultation material
The material plays an important role in the sound. The sound is transmitted through air or matter, and eventually the heat is lost. The transmission of sound waves has almost no attenuation in heavy metals, and is easily attenuated in lighter metals or plastics. Therefore, high-grade stethoscopes must use heavy metals such as stainless steel or titanium.
4, folded conductive part
The sound pipeline is also very important. The larger the inner diameter of the tube, the shorter the length, and the thicker the tube wall, the better the effect of the stethoscope. The international standard length is 27 inches.