CN2210626Y - Computor-control heart-sound ausculating instrument - Google Patents
Computor-control heart-sound ausculating instrument Download PDFInfo
- Publication number
- CN2210626Y CN2210626Y CN94239425U CN94239425U CN2210626Y CN 2210626 Y CN2210626 Y CN 2210626Y CN 94239425 U CN94239425 U CN 94239425U CN 94239425 U CN94239425 U CN 94239425U CN 2210626 Y CN2210626 Y CN 2210626Y
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- sound
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- heart
- teaching
- lung sounds
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- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
- Measurement And Recording Of Electrical Phenomena And Electrical Characteristics Of The Living Body (AREA)
Abstract
The utility model relates to a computer-controlled heart-sound auscultating instrument used for auscultation teaching. More than thirty kinds of heart and lung sounds such as the physiologic murmur, the mitral stenosis sound, the aortic insufficiency sound, etc., which are selected from the long-term teaching practice are processed in the digital mode from the simulation recording mode and are stored in the EPROM. The kinds of heart and lung sounds which are needed in teaching are controlled, selected, and replayed by a single-chip microcomputer. The utility model has the advantages of no distortion, low noise, and no influence on the service life in long term storage.
Description
This utility model relates to the medical teaching Instrument technology field, is a kind of computer cardiophony instrument that is used for the auscultation teaching.
The auscultation technology is one of important means of diagnosing the illness of doctor, is emphasis and the difficult point in the clinic always, need can reach the degree that skill comes from practice by repeating.This just needs enough disease kinds and a large amount of patients, just can give the chance that the medico repeats.And for a long time since many, the patient of student and sickly plant fewly can't reach above-mentioned requirement, so have a strong impact on the quality of instruction of auscultation.In order to solve this difficult problem, there are multiple cardiac auscultation disc and audiotape to come out for many years both at home and abroad in succession, for example: U.S.'s carat draws many hear sounds tapes, though improve the practising method environment playing in varying degrees, the effect of improving the quality of teaching, but all exist problems such as distortion and noise be big.Professor Liu Zhongling of domestic Changhai hospital presides over and has developed a series of " multiple tracks electronic auscultation systems " that are used for the auscultation teaching, solved problems such as distortion and noise are big preferably, but similar products at home and abroad still exists following problem:
1. the existing various unusual heart and lung sounds tape of having recorded is because the unfavorable long preservation of factor such as go mouldy;
2. disc or tape sound after repeatedly duplicating then can be decayed and distortion gradually.
Along with medical science applied continuous development, some unusual cardiopulmonary murmur has been difficult to hear, more needs to preserve to set up complete heart and lung sounds teaching archive.
The purpose of this utility model provides a kind ofly can be selected to call multiple heart and lung sounds flexibly in heart and lung sounds auscultation teaching on demand, and undistorted, low noise, can long preservation the heart and lung sounds auscultation instrument.
Task of the present utility model realizes in the following manner, will be through the typical heart and lung sounds of kind more than 30 of long-term record screening in teaching practice, that is: physiological noise, mitral incompetence, mitral stenosis (mid-diastolic), mitral stenosis (before the systole), mitral stenosis+incompetence, the sea-gull ring, aortic stenosis, aortic incompetence, aortic stenosis+incompetence, ventricular septal defect, patent ductus arteriosus, normal cardiac sound, decreased loudness of first sound, first heart sound strengthens, bruit de canon, second heart sound strengthens, splitting of first sound, splitting of second heart sound, the physiological third heart sound, opening snap, protodiastolic gallop, presystolic gallop, ejection sound, clicking sound, quadruple rhythm, sinus rate is uneven, atrial fibrillation, premature ventricular beat, pericardial friction rub, moist rale, wheezing sound, pleuritic rubs etc. are stored in program data memory EPROM(15～23 for 32 kinds after the analog record mode is carried out digitized processing), Single-chip Controlling utilized, select, the heart and lung sounds kind that the playback teaching is required.
Fig. 1 is the panel sketch map of instrument
Fig. 2 is the right flank sketch map of instrument
Fig. 3 is the system structure schematic diagram of instrument
In conjunction with the accompanying drawings this utility model is further described as follows:
1. the double figures sign indicating number shows; 2. on and off switch and voltage indicator lamp; 3. playback button; 4. subtract the counting key; 5. add the counting key; 6. reset key; 7. volume is regulated knob; 8. heart and lung sounds output plughole; 9. supply socket.
Fig. 3 is this machine main circuit part, and native system is center processor, program data memory EPROM(15～23 by large scale integrated circuit 8031 single-chip microcomputers (10)), address latch (24), 318 decoders (25), D/A converter (28), two forward-backward counters (11), (12) and A/V conversion, filter amplifier (27), power amplifier (26) etc. constitute Single Chip Microcomputer (SCM) system.The follow-up work of supply voltage is finished by 412 input nand gates (14).After the start, if when supply voltage is not less than 4.5V, display lamp (7) does not glimmer, and is in normal bright state, and instructed voltage is working properly.Regulate the threshold value that (13) adjustable voltage monitors.Because this system when 4.4V, can also work, so in order to allow some leeway, we are transferred to 4.5V to monitoring threshold.When press add counting key (5) after, by 8031 single-chip microcomputers (10) count pulse is sent into enumerator (11) and count, after full 10 numbers of meter, produce carry and give enumerator (12), when in like manner subtracting counting, (11) reduce to zero after, (12) are produced borrow.Each plus-minus counting value all shows that by the LED charactron plus-minus counting value of this demonstration is the numbering of heart and lung sounds.When pressing playback button (3), 8031 single-chip microcomputers (10) are according to numbering, by 318 decoders (25), to corresponding program data memory EPROM(15～23) the middle data of seeking this heart and lung sounds, then the data that find are accessed, be sent to D/A converter (28) and carry out the D/A conversion, the analogue signal after the conversion is again through behind A/V conversion, the filter amplifier (27), be input to power amplifier (26), to promote the follower playback.If not according to reset key (6), then playback is sustained, till pressing reset key (6).In addition, this instrument adopts AC and DC dual-purpose, and the alternating voltage scope of application is 180
V へ～240
V へ, DC voltage is battery of 6V(4 joints).
This utility model both kept the undistorted and noiseless characteristics of original tape, solved long preservation again preferably, used the problem of sound attenuating.Owing to there is not mechanical transmission mechanism, can uses for a long time and do not influence the life-span.And because of without magnetic tape type sound dish, therefore playback and do not change the trouble of tape continuously.With microcomputerized control and storing technology, for realizing that in the future further multimedia technology lays the first stone, and this technical device advanced person, dependable performance.
Claims (3)
1, a kind of computer cardiophony instrument, by microprocessor, digital demonstration, playback and power supply and be equipped with the control corresponding key and indicating section is formed, the Single Chip Microcomputer (SCM) system that is made of large scale integrated circuit 8031 single-chip microcomputers (10), program data memory EPROM (15～23), address latch (24), 318 decoders (25), D/A converter (28), two forward-backward counters (11), (12) and A/V conversion, filter amplifier (27), power amplifier (26) etc. that is characterised in that of the present utility model.
2, by the described computer cardiophony of claim 1 instrument, it is characterized in that being stored in program data memory EPROM(15～23 after 32 kinds of typical heart and lung sounds digitized processing such as physiological noise, aortic incompetence) in.
3, by the described computer cardiophony of claim 1 instrument, it is characterized in that the follow-up work of supply voltage is finished by 412 input nand gates (14).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94239425U CN2210626Y (en) | 1994-09-30 | 1994-09-30 | Computor-control heart-sound ausculating instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94239425U CN2210626Y (en) | 1994-09-30 | 1994-09-30 | Computor-control heart-sound ausculating instrument |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2210626Y true CN2210626Y (en) | 1995-10-25 |
Family
ID=33846646
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94239425U Expired - Fee Related CN2210626Y (en) | 1994-09-30 | 1994-09-30 | Computor-control heart-sound ausculating instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2210626Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102542864A (en) * | 2011-11-09 | 2012-07-04 | 南京邮电大学 | Achieving method of heart sound signal generator |
-
1994
- 1994-09-30 CN CN94239425U patent/CN2210626Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102542864A (en) * | 2011-11-09 | 2012-07-04 | 南京邮电大学 | Achieving method of heart sound signal generator |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |