CN203591274U - Gastrointestinal sound monitoring system - Google Patents
Gastrointestinal sound monitoring system Download PDFInfo
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- CN203591274U CN203591274U CN201320626765.7U CN201320626765U CN203591274U CN 203591274 U CN203591274 U CN 203591274U CN 201320626765 U CN201320626765 U CN 201320626765U CN 203591274 U CN203591274 U CN 203591274U
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Abstract
The utility model discloses a gastrointestinal sound monitoring system, which is used for solving the problems in the prior art that the gastrointestinal sound signals cannot be acquired directly and effectively, and the gastrointestinal sounds in multiple positions cannot be monitored synchronously. The system comprises a collection device which is used for collecting sounds of a plurality of gastrointestinal monitored positions and transmitting the sounds to a transfer device, the transfer device which is used for transferring the sounds of the plurality of monitored positions collected by the collection device into corresponding digital signals respectively, and a storage and display device which is used for storing and displaying a plurality of acquired digital signals at real time. Through the real-time, dynamic and continuous recording of the gastrointestinal sound signals, the more objective, accurate and comprehensive results capable of being played back are provided, and the changes of the gastrointestinal sound signals can be found timely since the gastrointestinal sound monitoring system can realize the continuous gastrointestinal sound monitoring easily.
Description
Technical field
This utility model relates to medical machinery field, particularly a kind of gastrointestinal sound monitoring system.
Background technology
Gastrointestinal sound (gastrointestinal sounds) is the important indicator of abdominal part assessment, and the diagnosis to celiac disease and the assessment of gastrointestinal motility all have larger help.Because conventional auscultation position is in Right Lower Abdomen or umbilicus week, be referred to as traditionally borborygmus (bowel sounds).
At present, the monitoring of domestic and international clinical gastrointestinal sound generally all adopts common stethoscope to be undertaken by the method for artificial auscultation.It is larger that the method is affected by auscultation personnel's subjectivity, and the measurability of auscultation result is with repeatable poor, has reduced the reliability of gastrointestinal sound monitoring.And, in the monitoring process of critical patient, needing just to carry out at set intervals an auscultation, the operation of this repetition auscultation, has increased the workload that gastrointestinal sound is monitored.
Existing published a kind of gastrointestinal sound monitoring technology---Multi-channel bowel sound collecting system, comprises multiple microphones, for acoustical signal is converted to the signal of telecommunication; Front-end processing circuit, for by signal of telecommunication filtering, amplification and level lifting; A/D conversion equipment, for being converted to digital signal by the signal of telecommunication after amplification, filtering and level lifting; And data transmission module, for sending digital signal.
The microphone that this Multi-channel bowel sound collecting system uses to external world interference tones without special filtration, affect the accuracy of image data, and the data of storing are simple digital signal, this digital signal of identification by human eye and judge that monitoring result has difficulties, be easy to cause monitoring result and clinical appraisal to disconnect, affect clinical practice.
And another kind of published prior art, digitized borborygmus monitoring system, adopts personal computer sound card and self-control auscultation head to gather the gastrointestinal sound at single position, and will collect to such an extent that gastrointestinal sound signal shows by waveshape signal.But this system only can gather single position, and adopt the auscultation head acquired signal without special filter function, also poor to the specific recognition of borborygmus signal, the borborygmus waveshape signal accuracy of demonstration is lower.
Generally speaking, current published prior art still can not meet the needs of clinical practice aspect the collection of gastrointestinal sound and writing function, can not be intuitively, effectively gastrointestinal sound monitoring result is fed back to clinical monitoring personnel.
Utility model content
This utility model embodiment provides a kind of gastrointestinal sound monitoring system, in order to solve in prior art, exist can not intuitively, effectively obtain gastrointestinal sound signal, and cannot carry out to multiple location the problem of synchronous gastrointestinal sound monitoring.
This utility model embodiment provides a kind of gastrointestinal sound monitoring system, comprising:
Harvester, for gathering the sound at multiple gastrointestinal monitorings position;
Reforming unit, for being separately converted to corresponding digital signal by the sound at multiple monitorings position of harvester collection;
Storage and display device, for storing and show multiple digital signals of acquisition;
This utility model embodiment provides a kind of gastrointestinal sound monitoring system, has adopted the harvester of the sound that can simultaneously gather multiple gastrointestinal monitorings position, and has realized and intuitively, effectively obtained and monitor gastrointestinal sound signal.
Accompanying drawing explanation
Fig. 1 is the gastrointestinal sound detection system schematic diagram in this utility model embodiment;
Fig. 2 is the structural representation of the harvester in this utility model embodiment;
Fig. 3 is the reforming unit schematic diagram in this utility model embodiment;
Fig. 4 is the filter schematic diagram in this utility model embodiment.
The specific embodiment
This utility model embodiment provides a kind of gastrointestinal sound monitoring system, can gather the sound at multiple gastrointestinal monitorings position simultaneously, and realize and intuitively, effectively obtained and monitor gastrointestinal sound signal.
Illustrate this utility model embodiment below in conjunction with accompanying drawing:
As shown in Figure 1, this utility model embodiment has designed a kind of gastrointestinal sound monitoring system, comprising:
Harvester 101, for gathering the sound at multiple gastrointestinal monitorings position, and is sent in reforming unit 102;
Reforming unit 102, is separately converted to corresponding digital signal for the sound at multiple monitorings position that harvester 101 is gathered;
Storage and display device 103, for storing and show multiple digital signals of acquisition;
Structure in the harvester of this utility model embodiment design as shown in Figure 2, comprises multiple acquisition modules 201, the corresponding gastrointestinal monitoring of each acquisition module 201 position.
Each acquisition module in harvester comprises:
In actual applications, the 3M Littmann specialty auscultation head that it is 214L that this utility model embodiment can adopt for the model of auscultative signal feature design, can reduce data acquisition better time, interference tones enters, and the professional auscultation head of the type has improved gastrointestinal sound signal amplification factor by its inner physical arrangement, by the contraction in length of connection tube to 10cm, produce with object around the interference tones that friction causes in order to reduce connection tube in auscultation process, and by inserting in connection tube totally-enclosed mini-loud hailer, reduce the interference of external environment noise to image data.
The structural representation of the reforming unit of this utility model embodiment design as shown in Figure 3, comprises signal processing module 301, and signal conversion module 302.
Signal processing module 301, comprise multiple signal processing chips 303, each signal processing chip 303 obtains the sound at a gastrointestinal monitoring position of acquisition module transmission, be converted into a corresponding audio signal, amplify step by step, and by the low pass filter filtering part mechanical noise of these signal processing chip 303 inside, then filtered audio signal is stored in signal conversion module 302;
Signal conversion module 302, comprise multiple DSP(digital signal processor, digital signal microprocessor) 304, a corresponding signal processing chip of DSP, each DSP is used for filtered corresponding signal processing chip 303 audio signal to be converted into corresponding digital signal, and sends to storage and display device.
In actual applications, reforming unit can adopt polylith to comprise the easy5509 development board of TLV320AIC23 and TMS320C5590A DSP, wherein, signal processing chip in signal processing module can adopt TLV320AIC23, and the DSP in signal conversion module can adopt TMS320C5509A DSP.In this utility model embodiment, can audio signal be amplified to 24 decibels by TLV320AIC23.TMS320C5509A DSP can be sent to storage and display device by corresponding digital signal by USB passage.And storage and display device can be converted into this digital signal oscillogram, in display screen, show.
System in this utility model embodiment also comprises filter, carries out respectively inputting storage and display device after filtering for multiple digital signals that above-mentioned reforming unit is transformed, and comprises band filter 401 and wavelet filtering module 402, as shown in Figure 4.
In actual applications, because the frequency of gastrointestinal sound mainly concentrates between 60～1500Hz, therefore, this utility model embodiment can be by the FIR band filter based on the design of THE DESIGN OF WINDOW FUNCTION method, the signal of rejection frequency outside 60～1500Hz, and by storage and display device, waveform corresponding filtering result is shown.This FIR band filter can adopt kaiser window design to carry out filtering to digital signal, its sample frequency can be fs=8000Hz, passband lower-cut-off frequency can be fc1=60Hz, upper cut-off frequency cut-off frequency can be fc2=1500Hz, transition band width can be 20Hz, and logical stopband fluctuation can be 0.01.
In actual applications, for making the analysis result of gastrointestinal sound signal more consistent with the artificial auscultation widely of clinical practice at present, the only point of articulation in gastrointestinal sound signal can be denoted as to a bunchiness gastrointestinal sound wave with playing point of articulation interval time adjacent two or more waveforms in 400ms, and it is as follows to obtain the indices of bunchiness gastrointestinal sound wave by the device of this utility model embodiment:
Bunchiness borborygmus wave number amount (its unit is: individual/per minute, and cpm): the number N of gastrointestinal sound wave in the unit interval;
Bunchiness borborygmus sound wave percentage of time (its unit is: %): the holding time summation T of gastrointestinal sound wave in the unit interval
m, divided by T detection time
1be multiplied by the result after 100%, i.e. T
m/ T
1* 100%;
Bunchiness borborygmus ripple average time (its unit is: ms): the holding time summation T of gastrointestinal sound wave in the unit interval
m/ gastrointestinal sound number N, i.e. T
m/ N;
(its unit is bunchiness borborygmus wave power: w): the quadratic sum of the amplitude of all borborygmus in the unit interval.
In order to guarantee the accuracy of collection, storage and Real time dynamic display of gastrointestinal sound signal, the gastrointestinal sound monitoring system of this utility model embodiment adopts multithreading processing mode, one route journey is called collecting thread, be responsible for collection and the storage of signal, gather audio signal with the sample frequency of 8KHz, and according to high byte at rear, low byte the coded system storage data at front (LittleEndian); Another route journey is called demonstration thread, is responsible for the real-time demonstration of signal data, and according to the demonstration yardstick setting in advance, to image data, key point is extracted in sampling, and connects key point and form corresponding waveform.Between above-mentioned multithreading, there is message synchronization mechanism, collecting thread was notified and is shown that thread upgrades the signal data showing in display screen before data buffering overflows, show that thread is after demonstration is complete, can notify immediately collecting thread cleaning buffering, to deposit the signal data of new collection.The advantage of this processing mode is to gather exactly and shows signal data, and can not seize because of resource, and causes the disappearance of signal data.
This utility model embodiment provides a kind of gastrointestinal sound monitoring system, can gather the sound at multiple gastrointestinal monitorings position simultaneously, and realized and intuitively, effectively obtained and monitor gastrointestinal sound signal after harvester is improved.
Particularly, the gastrointestinal sound monitoring system of the automatization of this utility model embodiment design can be carried out in real time gastrointestinal sound, dynamically, continuous record, simultaneously can be to the persistent period of single gastrointestinal sound waveform, the gastrointestinal sound such as sound frequency and power wave character parameter quantizes, accurate various dimensions calculate and compare, thereby provide more objective, accurately, comprehensively, result that can playback, and because this system can realize lasting gastrointestinal sound monitoring easily, find in time change of illness state, reduce medical personnel's operating procedure and time, improve medical personnel's work efficiency, gastrointestinal sound monitoring for critical patient has more feasible practicality, also be conducive to clinical gastrointestinal sound monitoring formulates unified simultaneously, measurable standard.
Although described preferred embodiment of the present utility model, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to be interpreted as comprising preferred embodiment and fall into all changes and the modification of this utility model scope.
Obviously, those skilled in the art can carry out various changes and modification and the spirit and scope that do not depart from this utility model embodiment to this utility model embodiment.Like this, if within these of this utility model embodiment are revised and modification belongs to the scope of this utility model claim and equivalent technologies thereof, this utility model is also intended to comprise these changes and modification interior.
Claims (6)
1. a gastrointestinal sound monitoring system, is characterized in that, comprising:
Harvester, for gathering the sound at multiple gastrointestinal monitorings position;
Reforming unit, for being separately converted to corresponding digital signal by the sound at multiple monitorings position of harvester collection;
Storage and display device, for storing and show multiple digital signals of acquisition.
2. the system as claimed in claim 1, it is characterized in that, described harvester further comprises multiple acquisition modules, the corresponding gastrointestinal monitoring of each acquisition module position, wherein, connection tube and totally enclosed type that each acquisition module comprises auscultation head, be connected with auscultation head are inserted the mini-loud hailer in described connection tube, wherein:
Auscultation head, for gathering the sound at corresponding gastrointestinal monitoring position, and transfers to mini-loud hailer by connection tube;
Mini-loud hailer, for carrying out physics amplification by the sound at corresponding gastrointestinal monitoring position.
3. system as claimed in claim 2, is characterized in that, the length of described connection tube is 10cm, the 3M Littmann auscultation head that the model of described auscultation head is 214L.
4. the system as claimed in claim 1, is characterized in that, described reforming unit further comprises:
Signal processing module, comprises multiple signal processing chips, and wherein, the corresponding gastrointestinal monitoring of each signal processing chip position, for the sound at corresponding monitoring position is converted into a corresponding audio signal, amplifies step by step, and carry out filtering;
Signal conversion module, comprise multiple digital signal microprocessor DSP, a corresponding signal processing chip of DSP, each DSP is used for filtered corresponding signal processing chip audio signal to be converted into corresponding digital signal, and sends to described storage and display device.
5. the system as described in any one in claim 1～4, is characterized in that, also comprises:
Filter, carries out respectively filtering for multiple digital signals that described reforming unit is transformed, and filtered multiple digital signals are inputted to described storage and display device.
6. system as claimed in claim 5, is characterized in that, described filter specifically comprises:
Band filter, carries out respectively bandpass filtering for multiple digital signals that described reforming unit is transformed, remove in waveform wherein exist significantly, the interfering signal of random fluctuation;
Wavelet filtering module, carries out secondary filtering for the signal to after bandpass filtering, by the target signal filter lower than threshold value wherein, and inputs described storage and display device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320626765.7U CN203591274U (en) | 2012-10-31 | 2013-10-11 | Gastrointestinal sound monitoring system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201220570277 | 2012-10-31 | ||
| CN201220570277.4 | 2012-10-31 | ||
| CN201320626765.7U CN203591274U (en) | 2012-10-31 | 2013-10-11 | Gastrointestinal sound monitoring system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174278A (en) * | 2017-06-20 | 2017-09-19 | 重庆睿凡科技发展有限公司 | A kind of mental and physical efforts monitoring system and method for being used to eliminate interference |
| CN113081028A (en) * | 2021-04-19 | 2021-07-09 | 中国人民解放军联勤保障部队第九0四医院 | Gastrointestinal peristalsis sound and patient sign monitoring system |
-
2013
- 2013-10-11 CN CN201320626765.7U patent/CN203591274U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107174278A (en) * | 2017-06-20 | 2017-09-19 | 重庆睿凡科技发展有限公司 | A kind of mental and physical efforts monitoring system and method for being used to eliminate interference |
| CN113081028A (en) * | 2021-04-19 | 2021-07-09 | 中国人民解放军联勤保障部队第九0四医院 | Gastrointestinal peristalsis sound and patient sign monitoring system |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140514 Termination date: 20151011 |
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| EXPY | Termination of patent right or utility model |