Stethoscope head structure with adjustable voice frequency

Abstract

The invention relates to an accessory of a medical appliance, in particular to an accessory of a stethoscope, which comprises a stethoscope head body, a membrane and a fastener. The membrane is provided with an annular step and an anchor; the membrane is arranged on a sound collection surface of the front side of the stethoscope head body and is fixed on the stethoscope head body through the fastener; the annular step is arranged at the outer edge part of the front side of the stethoscope head body; a thread is arranged on the step surface of the annular step; an annular groove is arranged onthe sound collection surface at the inner side of the annular step; an obtuse angle gamma is formed by the inside surface of the annular groove and the bottom surface of the annular groove; the anchor of the membrane is arranged in the annular groove; the fastener consists of a circular ring A and a circular ring B, the upper surfaces of which are in the same plane; the circular ring B is arranged in the circular ring A and the outer diameter of the circular ring B is the same with the inner diameter of the circular ring A; and the inner wall of the circular ring A is provided with a thread matched with the thread on the step surface. The stethoscope head structure with adjustable voice frequency has the advantage of being convenient for assembly and capable of continuously adjusting the audition effect.

Description

technical field [0001] The invention relates to a medical device accessory, in particular to a stethoscope accessory. Background technique [0002] Such as figure 1 As shown, the stethoscope is composed of listening head 1, rubber tube 2, listening tube 3 and earplug 4. When listening to multi-band sounds, it is mostly realized by changing the volume of the listening head sound collecting cavity. That is, when you need to listen to high-frequency sounds or low-frequency sounds, you only need to switch between different volumes of the listening head sound collection cavity. [0003] Existing technologies such as figure 2 , image 3 As shown, the diaphragm 12 is placed on the earpiece body 14, and then fixed by a fastener 12, which is an annular rubber ring. The fastener 12 is wrapped on the ring-shaped step 121 of the diaphragm and the earpiece body 14 , so that the diaphragm 12 is fixed on the earpiece body 14 . [0004] When in use, to switch from low-frequency sound ...

AI Technical Summary

Problems solved by technology

[0004] When in use, to switch from low-frequency sound to high-frequency sound, you only need to press the diaphragm 12 so that the diaphragm 12 is in contact with the annular shoulder 145. At this time, the λ angle of the diaphragm changes, but due to the lower surface of the annular step 128 is fixed on the platform 149 of the listening head body by the fastener 12, making it difficult to change the λ angle, so the user needs to expend a lot of force to press the listening head body 14 to change the λ angle, resulting in being used Those who are unwell

[0005] Secondly, due to the different hearing of each person, there will be different preferences when using it, and the long-term clinical auscultation habit. The existing technology cannot adjust the audio intensity heard, and can only use different audio settings.

[0006] Furthermore, the structure of the stethoscope earpiece of the existing dual-band technology is very inconvenient during assembly, and requires careful assembly by professionals to ensure the listening effect;

[0007] Thirdly, if a deviation occurs during use, resulting in a decline in the listening effect, the user generally cannot repair the listening effect

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