CN2143479Y - Stethoscope with amplifying function - Google Patents

Abstract

The utility model discloses a stethoscope with amplifying function with a sound amplifying assembly, characterized in that a sound pick-up [2] arranged in a stethoscope head is connected with an amplifier [3], and the sound is output to an earphone [7] by a conducting wire [10] to be passed into the ears of auscultators through an upper catheter. When the amplifier is not used, a power supply switch [12] is switched off, a plug valve [8] is opened, and the sound is passed to the upper catheter [9] through a lower catheter. A sound recording jack [11] is also arranged on an amplifier shell body [4] of the stethoscope head, which is connected with an amplifier [3]. The utility model has the advantage that weak organ sounds can be amplified and is convenient for accurate diagnosis. The utility model is particularly suitable for obesity type patients, and is suitable for clinical teaching in medical colleges.

Description

Stethoscope with amplifying function

This utility model relates to medical apparatus and instruments, definitely says so to be used to help the stethoscope of diagnosis.

The stethoscope that uses all is directly conduction of sound at present, and when meeting more weak organ sounds, the auscultator then is difficult for judging.Through the inventor's research, stethoscope has been carried out suitable improvement.

The purpose of this utility model provides a kind of novel stethoscope with sound enlarging function.

The purpose of this utility model is to realize like this.Stethoscopic external structure and common stethoscope are basic identical, have can, downcomer, upper conduit, go up the three way cock that downcomer connects.In can, a pick up is set, this pick up connects with audio frequency amplifier, and the audio frequency amplifier outfan links by lead and two earphones that are contained in the three way cock, and the sound that earphone sends imports auscultator's ear into by upper conduit.In order to prevent mutual cross-talk, on the gas circuit in the three way cock of the upper end of downcomer a plug valve is set, when with the earphone playback, this valve cuts out; When without the earphone playback, this valve is opened.

In addition, on can, also be provided with a recording jack and an on and off switch that links with amplifier.

This stethoscopic advantage is under the prerequisite that does not influence former stethoscopic function of use, can make the auscultator be convenient to determine the state of an illness and degree, to help further making a definite diagnosis by output after amplifying for more weak hear sounds (or other organ sounds).The jack of recording simultaneously can amplify output by external amplifier, and is for teaching.And, also hear sounds etc. may be logged in the audiotape, with the X-ray sheet, data such as B ultrasonic are together preserved, in order to consulting (news).

Description of drawings:

Fig. 1 is a stethoscopic structure diagram of the present utility model.

Fig. 2 is the side direction view of the can in 1.

Fig. 3 is the view profile of downcomer.

Fig. 4 is the block diagram of audio frequency amplifying circuit.

In the accompanying drawings, (1) can, (2) pick up, (3) amplifier, (4) amplifier housing, (5) downcomer, (6) three way cock, (7) earphone, (8) plug valve, (9) upper conduit, (10) lead, ［ 11 ］ recording jack, ［ 12 ］ on and off switch.

Describe embodiment in detail below in conjunction with accompanying drawing.With reference to accompanying drawing, the previous section of can (1) is with common stethoscope tin.In its bottom surface, near the other pick up (2), for example small-sized electret capacitor microphone adorned in gas circuit conduction hole.The sound picked up of pick up is input to amplifier (3) by conversion through lead thus.The electrical principle block diagram of amplifier is shown in the accompanying drawing (4).Audio signal after amplifying is delivered to interior two earphones (7) of three way cock (6) through lead (10), is transformed into sound, imports auscultator's in ear into by upper conduit (9).In addition, after lead (10) comes out from the amplifier housing (4) of can, preferably, be fixed together with downcomer (5) as the form of accompanying drawing 3.In the side edge of the amplifier housing (4) of can (1), establish a recording jack ［ 11 ］, this jack links with the outfan of amplifier.Can connect recorder or enlarger by this jack.Also establish an on and off switch ［ 12 ］ on the housing, with the work of control amplifier.If do not use amplifier, stethoscope of the present utility model and common stethoscope have identical functions.Its conversion is by the upper end that is contained in downcomer (5), and plug valve (8) cuts out on three way cock's (6) the intake channel, and the gas circuit of downcomer (5) is obstructed, and sound outputs to upper conduit from earphone.As not using amplifier, plug valve (8) is opened, and the gas circuit of downcomer (5) communicates with the gas circuit of upper conduit (9), uses as common stethoscope.

Inventor's suggestion here, for the obese type patient, the more weak patient of organ sounds uses amplifier, uses amplifier in teaching.Particularly the organ sounds of strong organ sounds and pathology is exported through amplifying, compared, meaningful especially.

Claims (2)

1, a kind of have a can (1), downcomer (5), three way cock (6), the stethoscope with sound amplifying device of upper conduit (9), it is characterized in that having a pick up (2) to connect an audio frequency amplifier (3) in the inside of can (1), audio frequency amplifier (3) links by two earphones (7) in lead (10) and the three way cock (6), on the three way cock's (6) of the upper end of downcomer (5) gas circuit a plug valve (8) is arranged.

2, the described stethoscope of a kind of claim 1 is characterized in that on the amplifier housing (4) of said can (1) a recording jack ［ 11 ］ that links with amplifier (3) outfan being arranged.

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