CN86208806U

CN86208806U - Clinical electronic stethoscope

Info

Publication number: CN86208806U
Application number: CN 86208806
Authority: CN
Inventors: 高华山
Original assignee: Individual
Current assignee: Individual
Priority date: 1986-11-01
Filing date: 1986-11-01
Publication date: 1987-11-18

Abstract

The utility model belongs to a medical appliance, used for clinical auscultation. The clinical electronic stethoscope is composed of a sound hearing head with a miniature pickup device, earplugs which can convert electrical signals to sound signals and an amplifier comprising electronic components in series; the utility model not only can hear the strong physiological and pathological sound of a human body, but also can hear the slight physiological and pathological sound of the human body, and can send the sound out. Besides, the clinical electronic stethoscope can record in a tape by a recorder to be used for clinical diagnosis analysis and medical history data preservation.

Description

Clinical electronic stethoscope

This utility model belongs to medical apparatus and instruments, is used for clinical auscultation.

Existing common stethoscope is by the spy sound head of plastic sheeting as sensing element, plastic tube is as conducting tube and have the earplug of the approximate tourus of a passage to constitute, in clinical practice, visit the plastic sheeting face of sound head and be close to human body position to be visited, as try to find out the sound of beating of heart, visit the sound head and be close to the cardia of human body, pass to the thin film of visiting in the sound head by the vebrato of heartbeat, its thin film is vibrated with the sound of beating of heart, to making the air vibration of visiting sound head internal cavity part, reach earplug by conducting tube, it can only play conduction to sound this stethoscope, and sound is not had amplification, thereby in clinical practice, do not hear clear to many slight pathologic and physiological noise, even at all not hearing of having, promptly enable the sound heard, also can only lean on examiner's memory to judge, these SoundRecs can not be got off, so that supply the usefulness of clinical analysis of diagnosis and medical history information preservation.

One of task of the present utility model is: in clinical auscultation, not only can only try to find out strong physiological and pathologic noise, but also want to snoop slight physiological and pathologic noise.

Two of task of the present utility model is: not only only solve the problem of listening, also these physiologicals and pathologic noise can easily will be noted, for the usefulness of clinical analysis of diagnosis and medical history information preservation.

Task of the present utility model is finished as follows:

A kind of medical electronic stethoscope has the sound head (1) of spy, earplug (2), it is characterized in that visiting miniature pick up (6) is housed in the sound head (1), earplug (2) is can be the speaker of acoustical signal with electrical signal conversion, visit between sound head (1) and the earplug (2) and be connected in series an amplifier of forming by electronic component (3), visit between sound head (1) and the amplifier (3), and couple together with conductor wire between amplifier (3) and the earplug (2).

According to stethoscope of the present utility model, amplifier (3) is to be made of preposition amplifier section (9), power amplifying part (10), frequency modulation radiating portion (11) and battery (12), the modulation frequency of frequency modulation radiating portion is 88 megahertzes～108 megahertzes, receive the signal that the frequency modulation radiating portion emits with a frequency modulation radio cassette player, the recording part of frequency modulation radio cassette player is recorded in sort signal on the tape, for the usefulness of clinical analysis of diagnosis and medical history information preservation.

Below with reference to accompanying drawing this utility model is described in further detail:

Fig. 1 for the profile of visiting the sound head and with amplifier (3) and earplug (2) connection layout.

Fig. 2 is the schematic diagram of amplifier (3).

With reference to Fig. 1: one has the spy sound head (1) that faint acoustical signal can be converted to the signal of telecommunication is to be combined by housing (5) and case lid (4), case lid (4) is made with metal, the heart has a garden through hole therein, Human Physiology and pathologic murmur reach miniature pick up (6) by this garden through hole, the latter half of miniature pick up (6) of laying in the housing (5), housing (5) inner bottom part has a rubber plantation packing ring (7) to play the insulation antihunt action, miniature pick up (6) is connected with an end of amplifier (3) with two core screening conductive lines, amplifier (3) is contained in the plastic casing, plastic casing forms with the plastics injection or bonds with lucite, the other end of plastic casing is equipped with jack base (8), passes through two core plug, two core screening conductive lines link to each other with speaker.

With reference to Fig. 2: the signal of telecommunication of miniature pick up (6) is connected to the input of preposition amplifier section (9) by two core screening conductive lines, preposition amplifier section (9) has adopted high-amplification-factor, low noise silicon triode, R1, R2, C3 form voltage, current feedback loop, C2 plays the noise suppressed effect, thereby guarantee the low noise of preposition amplifier section (9), W is the potentiometer of belt switch, plays the on and off switch effect on the one hand, plays the volume control action on the other hand.Power amplifying part (10) adopts the dynamic amplifier of the straight coupling of secondary, promotes the speaker sounding.R3 guarantees the work of T energy stabilized frequency in the frequency modulation transmitting boundary, is convenient to the frequency modulation radio cassette player and receives, and tranmitting frequency is adjusted by C6 and L, and tranmitting frequency is in 88 megahertzes～108 megahertz range.

That stethoscope of the present utility model has is highly sensitive, noise is little, can be to hear sounds, cardiovascular noise, lung's breath sound and pathologic capillary bronchophony, the gurgling sound of vesicular breath sounds, pleural friction sound, belly, peristaltic sound, kidney A flow murmur, the fetal heart sound of gynemetrics and cerebral vessels flow murmur etc. can both lean out clearly.

Claims

1, a kind of medical electronic stethoscope has the sound head (1) of spy, earplug (2), it is characterized by to visit in the sound head (1) miniature pick up (6) is housed, earplug (2) is can be the speaker of acoustical signal with electrical signal conversion, visit between sound head (1) and the earplug (2) and be connected in series an amplifier of forming by electronic component (3), couple together with lead between spy sound head (1) and amplifier (3), amplifier (3) and the earplug (2).

2, according to the stethoscope of claim 1 regulation, it is characterized by amplifier (3) is to be made of preposition amplifier section (9), power amplifying part (10), frequency modulation radiating portion (11), battery (12).

3, according to the stethoscope of claim 2 regulation, the tranmitting frequency that it is characterized by frequency modulation radiating portion (11) is 88 megahertzes～108 megahertzes.