CN101332095A - Stethophone - Google Patents
Stethophone Download PDFInfo
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- CN101332095A CN101332095A CNA2007101261403A CN200710126140A CN101332095A CN 101332095 A CN101332095 A CN 101332095A CN A2007101261403 A CNA2007101261403 A CN A2007101261403A CN 200710126140 A CN200710126140 A CN 200710126140A CN 101332095 A CN101332095 A CN 101332095A
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- amplifier
- stethoscope
- pick
- signal
- sound
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- Measuring And Recording Apparatus For Diagnosis (AREA)
Abstract
The invention relates to an electronic stethoscope that can collect sound made by different human organs and transmit the collected sound to an electronic data memory, such as a computer, and the like, to be stored. The electronic stethoscope comprises a stethoscope head, a sensor and an audio cable provided with an interface.
Description
The present invention relates to a kind of medical apparatus and instruments, particularly a kind of stethoscope.
The stethoscope that known medical diagnosis is used is mechanical, is used for checking diagnosis heart hear sounds, pulmonary's tracheal bronchus and vesicular breathing sound, fetal heart sound, measuring blood pressure etc., and the medical worker has judged whether pathological changes by the sound of listening to these positions.Stethoscope commonly used comprises an oblate hollow pick up, and the sound that will be examined the position by a hollow pipe is sent into the in ear of user, by the judgement to hearing sound, makes diagnosis.This its shortcoming of mechanical stethoscope is: must be that the medical worker directly contacts patient, by the sound that stethoscope obtained is made instant judgement, and its sound of hearing lacks repeatability, if the medical worker does not directly contact patient, just can't obtain patient's pathological changes situation at that time.Therefore it is necessary improving.
The object of the present invention is to provide a kind of shortcoming that can overcome known technology, easy to use, safety makes diagnosis electronic stethoscope more easily.
For achieving the above object, the solution of the present invention is: a kind of electronic stethoscope comprises:
Pick up with reflecting curved surface is connected this pick up with a pick off, with acoustical signal not modified change current signal into.
Article one, tone frequency channel wire connects pick off and audio interface, and current signal is connected to computer, by computer the current signal that is obtained is stored and is propagated.
Adopt such scheme, can realize purpose of the present invention.
Below in conjunction with diagram and specific embodiment scheme is described in more detail.
Fig. 1 is the electronic stethoscope theory diagram;
Fig. 2 is the electronic stethoscope structure chart;
Fig. 3 is a pick off electronics layout in the electronic stethoscope;
Fig. 4 is sensor frequency-voltage response in the electronic stethoscope
As Fig. 1 is the block diagram of electronic stethoscope, comprise pick up (1) collection original sound signal, a pick off (2) converts the collected original sound signal of pick up (1) to current signal, and tone frequency channel wire (3) that has audio interface (5) is sent to the current signal of pick off (2) on the computer (4) by audio connector (5) as required and stores.
Electronic stethoscope structure chart shown in Figure 2 has a pick up (1), the opening of pick up (1) simultaneously has the very thin vibration membrane of one deck, the vibrations that will be examined the position through vibration membrane are by the microphone of air borne to the pick off (2), collect this vibrations and be converted into current signal by the microphone on the pick off (2), be transferred on the computer (4) through tone frequency channel wire (3).
Fig. 3 is the electronic-circuit diagram of pick off in the electronic stethoscope (2), and the signal processing and amplifying device of present embodiment is specially illustrated circuit diagram, and this circuit diagram is a bandpass amplifier.Limited because of the current signal frequency range of pick-up head conversion, so invalid signals (signal outside the frequency band) is decayed, it is proper and effective that useful signal (signal within the frequency band) amplifies.In the design, also can adopt other forms of alternating current-direct current amplifier or band limit (comprising that low pass, high pass, band lead to) amplifier, but also should belong within the application's the protection domain, this considers easily.
In illustrated circuit diagram, MIC is a pick-up head, and effect is to convert acoustical signal to the signal of telecommunication, and the signal of its output amplifies through Q1, and through band filter with the interfering signal filtering, output to audio socket at the Out point at last.R1 is the operating bias resistance of MIC; C1 is a coupling capacitance, prevents that pick-up head circuit and amplifying circuit from interfering with each other; R2 is the biasing resistor of Q1, and the operating point of feedback stability Q1 is provided, and reduces because of the influence of change in voltage to amplifying circuit; R3 is a load resistance, provides current to the conversion of voltage; C2, R4, C3 form band filter, filtering interference signals (its frequency-voltage response characteristic as shown in Figure 4); The signal of Out point output directly is access to tone frequency channel wire (3), and last tone frequency channel wire (3) is received the sound card Mic input of computer by audio connector (5), and record data match with the software of computer end.
Because this device is the collection preposition equipment of sound, its signal can export in any electronic signal collection instrument as: computer, in the various storage devices such as mp3.
Use through this device to show that sound collecting is simple and convenient, collection and storage by to the acoustical signal that is examined the position make the medical worker under the situation that does not contact patient, and patient is carried out remote diagnosis.Make things convenient for patient and doctor, make tele-medicine be able to preliminary convenient succinct realization.
In sum, the present invention is effective.
Claims (10)
1, a kind of stethoscope is arranged, it is characterized in that this stethoscope has pick off and audio interface.
2, stethoscope according to claim 1 is characterized in that the audio jack of this audio interface for being connected with computer.
3, stethoscope according to claim 2 is characterized in that this pick off has an amplifier
4, stethoscope according to claim 3 is characterized in that this amplifier has a bandpass amplifier.
5, stethoscope according to claim 3 is characterized in that this amplifier is a direct current amplifier.
6, stethoscope according to claim 3 is characterized in that this amplifier is an alternative current amplifier.
7, stethoscope according to claim 3 is characterized in that this amplifier is a band-limited amplifier.
8, stethoscope according to claim 7 is characterized in that this amplifier is a low-pass amplifier.
9, stethoscope according to claim 7 is characterized in that this amplifier is the high pass amplifier.
10, stethoscope according to claim 7 is characterized in that this amplifier is a bandpass amplifier.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101261403A CN101332095A (en) | 2007-06-12 | 2007-06-12 | Stethophone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101261403A CN101332095A (en) | 2007-06-12 | 2007-06-12 | Stethophone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101332095A true CN101332095A (en) | 2008-12-31 |
Family
ID=40195169
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101261403A Pending CN101332095A (en) | 2007-06-12 | 2007-06-12 | Stethophone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101332095A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104287772A (en) * | 2014-10-16 | 2015-01-21 | 任瑞 | Digital stethoscope |
-
2007
- 2007-06-12 CN CNA2007101261403A patent/CN101332095A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104287772A (en) * | 2014-10-16 | 2015-01-21 | 任瑞 | Digital stethoscope |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| DD01 | Delivery of document by public notice |
Addressee: Lin Xiaofeng Document name: Notification that Application Deemed to be Withdrawn |
|
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081231 |