Hand-free stethoscope head with sound insulation and noise reduction functions

Abstract

The invention discloses a hand-free stethoscope head with sound insulation and noise reduction functions. The stethoscope head comprises a sound insulation body, a sound pick-up head and a vibration membrane, wherein the sound insulation body is a cylindrical body and is internally provided with a mounting cavity, the sound pick-up head is arranged in the mounting cavity of the sound insulation body, the inner bottom of the sound pick-up head is provided with a funnel-shaped sound pick-up cavity, the bottom of the sound pick-up cavity is provided with the vibration membrane, the sound pick-uphead is seamlessly jointed with the vibration membrane to seal the sound pick-up cavity, the sound insulation body wraps the sound pick-up head and the vibration membrane, so that the vibration membrane is positioned in the middle position of the bottom surface of the sound insulation body, the bottom surface of the vibration membrane is flush with the bottom surface of the sound insulation body,and two-sided application patches are adhere to the bottom surfaces of the vibration membrane and the sound insulation body. When in application, the stethoscope head can effectively reduce the interference of external noise on audio acquisition, can realize wireless unmanned monitoring at the same time, and is more convenient to use.

Description

Technical field [0001] The invention relates to the technical field of stethoscopes, in particular to a hands-free auscultation head with sound insulation and noise reduction functions. Background technique [0002] At present, auscultation heads of various structures can better solve the problem of sound pickup. However, in the actual clinical auscultation process, there are often different degrees of environmental background noise. When doctors use acoustic stethoscopes, they rely on experience. "Filter" environmental background noise; but when using an electronic stethoscope, the frequency range of external environmental noise that can be distinguished by human ears is generally 20hz-20khz, covering the effective frequency range of bowel sounds from 100hz-1000hz. When the bowel sound signal is weak and the environmental noise signal is too strong, the bowel sound signal has been completely "overwhelmed" by the environmental noise signal, and such weak bowel sound signal cannot...

AI Technical Summary

Problems solved by technology

In addition, the use of conventional filtering methods, while filtering out the noise signal, will also lose the useful signal of bowel sounds to a certain extent, making the filtered bowel sound signal distorted and reducing the accuracy of diagnosis

Compared with the traditional auscultation head, the current medical electronic auscultation head uses a microphone for sound-electric conversion, and outputs it through the earphone interface for the auscultation personnel to identify. This audio collection technology has higher audio frequency than the physical amplification of the traditional auscultation head. The amplification function greatly improves the efficiency and accuracy, and there are many such devices with wireless transmission technology and audio-visual technology. However, the current doctor's application angle of electronic stethoscope is the same as that of traditional stethoscope. It is applied in short-term manual diagnosis and During the synchronizing process of auxiliary equipment, as the diagnosis (examination) is completed, the equipment is also used synchronously. Therefore, the exclusive diagnostic installation technology is not considered in the operation process. The doctor usually places the auscultation head on the relevant part of the patient to be examined by hand. After the auscultation is completed Take it down, stay under the feature of short-term synchronization to assist human inspection

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