CN205083509U - Auscultation mode switch automated inspection digit stethoscope - Google Patents
Auscultation mode switch automated inspection digit stethoscope Download PDFInfo
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- CN205083509U CN205083509U CN201520868162.7U CN201520868162U CN205083509U CN 205083509 U CN205083509 U CN 205083509U CN 201520868162 U CN201520868162 U CN 201520868162U CN 205083509 U CN205083509 U CN 205083509U
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- stethoscope
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Abstract
The utility model provides an auscultation mode switch automated inspection digit stethoscope, including double -end body piece, bell earphone, stethoscope voice output hole, diaphragm chamber, sound sensor, bell earphone and diaphragm chamber set up relative both sides on double -end body piece separately, stethoscope voice output installs in the hole in double -end body piece, and when stethoscope voice output hole was rotatory, bell earphone or diaphragm chamber can be aimed at respectively in the sound import of front end, the sound sensor is located the tail end in stethoscope voice output hole for detect the auscultation sound, it mainly improves the part and lies in, still includes an auscultation mode detector, and auscultation mode detector is installed on the outer wall of stethoscope voice output hole, and the orientation of auscultation mode detector and stethoscope voice output hole sound import orientation are unanimous for detect the auscultation mode of discriminating digit stethoscope setting, the utility model discloses can realize measuring mode's automatic switch -over to the extra operation of mode switch in the application of digital stethoscope has been eliminated.
Description
Technical field
This utility model relates to a kind of stethoscope, and especially a kind of auscultation mode switches the digital stethoscope automatically detected.
Background technology
Stethoscope is the most frequently used diagnosis utensil of inside and outside Gynecology & Pediatrics Dept. doctor, is the mark of doctor, is widely used in the auscultation of the heart, lung.Stethoscope is for since clinical before 200 years, and basic structure change is little, mainly comprise for detecting the body part of sound, sound conduction part and audition part with human contact, but stethoscopic performance and occupation mode has had very large change.Initial acoustic stethoscope is from simple wooden monaural receiver; Develop into the ears acoustic stethoscope of hose conduction sound; Body part has bell (low frequency lungs sound), bellows (heart high frequency audio) form.But one of restriction of acoustic stethoscope is that the conduit transmitting sound cannot do very long, generally at 50 centimetres, the catheter length of top product transmission sound can to 58 centimetres, and conduit has very large restriction to the position that doctor is measured in auscultation.Under the promotion of sound transducer and electronic technology, there is simulation electronic stethoscope, larger signal amplification factor can have been obtained than acoustic stethoscope, and by the very large change that made the transmission range of auscultatory sound have of wire and earphone.Shortcoming is the noise that the process of electronic auscultation speech simulation effectively can not process patient's cough, position chanP, environment etc. and brings, this noise may be converted into the very large signal of energy at the stethoscopic earphone of simulation electronic, make the medical worker of measurement very uncomfortable, even injure the audition of medical worker, and higher than acoustic stethoscope a lot of in simulation electronic stethoscope price, so there is no be popularized.
Had under significant progress at the dedicated digital signal processor of voice signal, stethoscopic latest developments are digital stethoscopes.Different with previous simulation electronic stethoscope, digital stethoscope has carried out the process such as quantification, filtering and pattern recognition to the signal of telecommunication that sound transducer conversion auscultatory sound obtains.Particularly pattern recognition, the environment noises such as clothes friction, patient's cough, unexpected impact stethoscope piece can be differentiated, and effectively suppress, effective Digital Signal Processing can make the environment noise of more than 80% suppressed, effective amplification of 24 times, etc., thus making electronic stethoscopic signal amplification factor large, excellent features such as (substantially unrestricted) far away of transmitting is played.
But Contemporary Digital stethoscope still Shortcomings.One of deficiency is that the healthcare givers of needs operation switches hear sounds/lungs sound pattern according to the object measured is manual in the application.This is because current digital stethoscope all adopts single bellows body part structure.Adopt single bellows body part design for the weight reducing digital stethoscope, simplifying sensor maintenance is very easily, but bellows body part compares the auscultation being applicable to heart, therefore time digital stethoscope is used for auscultation of lung, user needs the mode button adjusting electric stethoscope, and shown the pattern of current demand signal process by stethoscopic display for " lungs sound pattern ", in use suitably firmly body part is pressed in the auscultation position of patient to realize the auscultation of lung, arbitrarily can not switch between the measurement of the heart/lung, it is not very convenient to use.
Summary of the invention
The purpose of this utility model overcomes the deficiencies in the prior art, provides a kind of auscultation mode to switch and automatically detect digital stethoscope, by adopting the design of double end body part, coordinating specially designed pattern detector, thus realizing the automatization of the heart/lung auscultation; In the application, medical worker only needs to resemble the body part turning to auscultation to measure stethoscope sound output aperture traditional stethoscopic application of binary part, just can realize the automatic switchover of measurement pattern, thus the pattern eliminated in digital stethoscope application switches extra operation.The technical solution adopted in the utility model is:
A kind of auscultation mode switching detects digital stethoscope automatically, comprises double end body part, bell receiver, stethoscope sound output aperture, bellows, sound transducer;
Bell receiver and bellows divide and are located at both sides relative on double end body part; Stethoscope sound output aperture is arranged in double end body part, and can rotate; When stethoscope sound output aperture rotates, the sound import of front end can aim at bell receiver or bellows respectively; Sound transducer is positioned at the tail end of stethoscope sound output aperture, for detecting auscultatory sound;
Its main improvements are, also comprise an auscultation pattern detector, auscultation mode detector is arranged on the outer wall of stethoscope sound output aperture hole, auscultation mode detector towards with the import of stethoscope sound output aperture sound towards consistent, for detect and discriminating digit stethoscope arrange auscultation mode;
Auscultation mode detector is connected digital stethoscope signal process and control circuit with sound transducer by cable.
Further, described auscultation mode detector adopts eddy current sensor; Bell receiver is different relative to eddy current sensor spacing with bellows, and bell receiver and bellows are metal material; This eddy current sensor is connected in an oscillating circuit; According to amplitude bell receiver relative to phase identification eddy current sensor or the bellows of eddy current sensor internal oscillation signal, thus the auscultation mode that corresponding discriminating digit stethoscope is arranged is lungs sound pattern or hear sounds pattern.
An auscultation mode switching detection method for digital stethoscope, comprises the steps:
Step S1, uses one to be arranged on after stethoscope sound output aperture on sector hole outer wall and with the import of stethoscope sound output aperture sound towards consistent auscultation mode detector, detect auscultation mode detector with towards bell receiver or the distance of bellows; And judge that the auscultation mode of digital stethoscope current setting is lungs sound pattern or hear sounds pattern according to the distance of distance;
Step S2, detect according to sound transducer and return to patient's auscultatory sound signal of digital stethoscope signal processing and control circuit, according to the frequecy characteristic comprised in auscultatory sound signal, whether the using forestland represented by determination frequency feature is consistent with the auscultation mode of digital stethoscope current setting; And provide corresponding prompting.
Further, in step S1, auscultation mode detector adopts eddy current sensor, and this eddy current sensor is connected in an oscillating circuit; According to amplitude bell receiver relative to phase identification eddy current sensor or the bellows of eddy current sensor internal oscillation signal, thus the auscultation mode that corresponding discriminating digit stethoscope is arranged is lungs sound pattern or hear sounds pattern;
Be specially: when eddy current sensor is towards bell receiver or bellows, be connected compared with oscillator signal phase and magnitude that oscillating circuit obtains the amplitude of the oscillator signal of acquisition is in free space respectively with phase place during with eddy current sensor,
If amplitude difference is greater than setting amplitude difference upper limit threshold and phase contrast is greater than setting phase contrast upper limit threshold, then judge that eddy current sensor is towards bellows, auscultation mode is hear sounds pattern;
If amplitude difference is less than setting amplitude difference lower threshold and phase contrast is less than setting phase contrast lower threshold, then judge that eddy current sensor is towards bell receiver, auscultation mode is lungs sound pattern.
Further, in step S2, a boundary frequency point specifically can be set, distribute according to the signal frequency below or above boundary frequency point in auscultatory sound signal, judge that current auscultatory sound signal is low frequency lungs sound or high frequency hear sounds; Thus judge that whether the current using forestland of digital stethoscope is consistent with the auscultation mode of digital stethoscope current setting.
The utility model has the advantage of:
1) use of digital stethoscope is convenient, after switching the auscultation mode arranged, can be automatically recognized, without the need to manual adjustment mode button.
2) add the automatic testing process that in use procedure, whether using forestland mates with the auscultation mode of setting, medical worker can be reminded in time.
Accompanying drawing explanation
Fig. 1 is electric theory diagram of the present utility model.
Fig. 2 is lungs sound pattern and the bell pattern of double end body part stethoscope of the present utility model and auscultation mode detector.
Fig. 3 is hear sounds pattern and the bellows pattern of double end body part stethoscope of the present utility model and auscultation mode detector.
Fig. 4 is a kind of auscultation mode detector using eddy current sensor of the present utility model.
Fig. 5 is the amplitude that causes of use eddy current sensor of the present utility model and stethoscope piece metal-back distance and phase place change schematic diagram.
Fig. 6 is the reference flowchart that digital stethoscope signal processing and control circuit process auscultation mode automatically switch.
Detailed description of the invention
Below in conjunction with concrete drawings and Examples, the utility model is described in further detail.
The auscultation mode switching that the present embodiment proposes detects digital stethoscope automatically, and as shown in Figure 1, primary structure as shown in Figures 2 and 3 for electric principle.
Auscultation mode switching detects digital stethoscope automatically, comprises double end body part 10, bell receiver 11, stethoscope sound output aperture 12, bellows 13, auscultation mode detector 14, sound transducer 15, cable 16; In Fig. 2, digital stethoscope is arranged on lungs sound pattern (bell pattern), and in Fig. 3, digital stethoscope is arranged on hear sounds pattern (bellows pattern).
Bell receiver 11 is located at both sides relative on double end body part 10 with bellows 13 points; Stethoscope sound output aperture 12 is arranged in double end body part 10, and can rotate; When stethoscope sound output aperture 12 rotates, the sound import of front end can aim at bell receiver 11 or bellows 13 respectively, thus switches stethoscopic auscultation mode; Sound transducer 15 is positioned at the tail end of stethoscope sound output aperture 12, for detecting auscultatory sound; Auscultation mode detector 14 is arranged on after stethoscope sound output aperture 12 on sector hole outer wall, auscultation mode detector 14 towards with the import of stethoscope sound output aperture 12 sound towards consistent, for detecting and the auscultation mode that arranges of discriminating digit stethoscope;
Auscultation mode detector 14 is connected digital stethoscope signal process and control circuit with sound transducer 15 by cable 16.(some type sound transducer 15 needs a voltage input to the pumping signal of digital stethoscope signal processing and control circuit output sound transducer 15 and auscultation mode detector 14 needs, hereby illustrate), and the sound transducer 15 received and auscultation mode detector 14 output signal.
In the present embodiment, auscultation mode detector 14 adopts eddy current sensor; Different from the contact area of human body due to bellows 13 and bell receiver 11, the height of structure is different, therefore, when stethoscope sound output aperture 12 rotates the bellows 13 or bell receiver 11 selecting to measure correspondence time, spacing between auscultation mode detector 14 and bellows 13 or bell receiver 11 shell is different, and bell receiver 11 wants far away apart from auscultation mode detector 14 relative to bellows 13; Therefore, bellows 13 or bell receiver 11 apply the automatic detection that this attribute realizes auscultation mode.
Such as, adopt metal material, the bellows 13 that aluminum or rustless steel make or bell receiver 11, eddy current sensor can be used to be bellows 13 or the bell receiver 11 of body part to indicate auscultation mode correspondence.Specific works principle is as follows:
As Fig. 4, eddy current sensor has the formations such as coil 1401, magnetic core 142 and skeleton, and coil 141 is around on skeleton; In time being in free space, its inductance is intrinsic; When eddy current sensor near metal derby 9 time, the alternating magnetic field that eddy current sensor internal current is formed can produce eddy current in metal derby 9 inside, thus change the inductance value of eddy current sensor.
For oscillating circuit, when this eddy current sensor is connected in an oscillating circuit; Amplitude according to eddy current sensor internal oscillation signal is relative with phase identification eddy current sensor is bell receiver 11 or bellows 13, thus the auscultation mode that corresponding discriminating digit stethoscope is arranged is lungs sound pattern or hear sounds pattern.As Fig. 5, eddy current sensor from metal more away from, so the amplitude of eddy current sensor internal oscillation signal and phase place are more close to oscillator signal amplitude and the phase place of free space eddy current sensor; Time distance between eddy current sensor and metal is more and more nearer, the amplitude of internal oscillation signal is more and more less, and phase place change is increasing.
In digital stethoscope signal processing and control circuit, a MCU can be set to detect amplitude and the phase place change of above-mentioned eddy current sensor internal oscillation signal.Can also arrange a LC oscillating circuit in digital stethoscope signal processing and control circuit, to connect eddy current sensor, the coil 1401 in eddy current sensor is as the inductance L in LC oscillating circuit.
When stethoscope sound output aperture 12 rotates and bellows 13 communicates time, digital stethoscope is used for hear sounds and measures, and auscultation mode correct for stethoscope is transferred to digital stethoscope signal processing to auscultation mode detector 14 and control circuit is used for selecting correct signal handler and shows hear sounds pattern; When stethoscope sound output aperture 12 rotates and bell receiver 11 communicates time, stethoscope is used for lungs sound and measures, and auscultation mode correct for stethoscope is transferred to digital stethoscope signal processing to auscultation mode detector and control circuit is used for selecting correct signal handler and shows lungs sound pattern.
Described in upper, adopt eddy current sensor, just can be easy to judge that the auscultation mode that digital stethoscope is arranged is lungs sound pattern or hear sounds pattern.But when using digital stethoscope, the situation that the auscultation mode of using forestland and setting is inconsistent may be there is in doctor.Otherwise such as use bellows 13 measure lung sounds or, even have selected correct pattern, but the body part bellows of associative mode or bell receiver there is no to contact with correct position.
The auscultation mode switching detection method of digital stethoscope, therefore needs the following step comprised as shown in Figure 6,
Step S1, use one to be arranged on after stethoscope sound output aperture 12 on sector hole outer wall and with the import of stethoscope sound output aperture 12 sound towards consistent auscultation mode detector 14, detect auscultation mode detector 14 with towards bell receiver 11 or the distance of bellows 13; And judge that the auscultation mode of digital stethoscope current setting is lungs sound pattern or hear sounds pattern according to the distance of distance;
In the present embodiment, auscultation pattern detector 14 adopts eddy current sensor, and this eddy current sensor is connected in an oscillating circuit; According to amplitude bell receiver 11 relative to phase identification eddy current sensor or the bellows 13 of eddy current sensor internal oscillation signal, thus the auscultation mode that corresponding discriminating digit stethoscope is arranged is lungs sound pattern or hear sounds pattern;
Be specially: when eddy current sensor is towards bell receiver 11 or bellows 13, be connected compared with oscillator signal phase and magnitude that oscillating circuit obtains the amplitude of the oscillator signal of acquisition is in free space respectively with phase place during with eddy current sensor,
If amplitude difference is greater than setting amplitude difference upper limit threshold and phase contrast is greater than setting phase contrast upper limit threshold, then judge that eddy current sensor is towards bellows 13, auscultation mode is hear sounds pattern;
If amplitude difference is less than setting amplitude difference lower threshold and phase contrast is less than setting phase contrast lower threshold, then judge that eddy current sensor is towards bell receiver 11, auscultation mode is lungs sound pattern.
Step S2, detect according to sound transducer 15 and return to patient's auscultatory sound signal of digital stethoscope signal processing and control circuit, according to the frequecy characteristic comprised in auscultatory sound signal, whether the using forestland represented by determination frequency feature is consistent with the auscultation mode of digital stethoscope current setting; And provide corresponding prompting.
In step S2, a boundary frequency point specifically can be set, distribute according to the signal frequency below or above boundary frequency point in auscultatory sound signal, judge that current auscultatory sound signal is low frequency lungs sound or high frequency hear sounds; Thus judge that whether the current using forestland of digital stethoscope is consistent with the auscultation mode of digital stethoscope current setting.
When the low-frequency component lower than boundary frequency in auscultatory sound signal is more, then what obtain is a low frequency Lung Sounds; Otherwise when the radio-frequency component higher than boundary frequency in auscultatory sound signal is more, then what obtain is a high frequency cardiechema signals.If the frequecy characteristic comprised in auscultatory sound signal does not conform to the frequecy characteristic of low frequency lungs sound or high frequency hear sounds, then illustrate that the position that stethoscope piece is placed is wrong, does not have to contact with correct position.
When the auscultation mode that digital stethoscope using forestland and setting occur is inconsistent, or when there is position placement mistake, digital stethoscope signal processing and control circuit provide corresponding miscue.
Above-described specific embodiment, further describes the purpose of this utility model, technical scheme and beneficial effect.Be understood that, the foregoing is only specific embodiment of the utility model, be not limited to this utility model, such as, embodiment of the present utility model have employed eddy current sensor and metallic object part coordinates the detection realizing auscultation mode, also can use photoelectric sensor, capacitance kind sensor, even the sensor of contact realizes, and can be selected flexibly voluntarily by design engineer according to product design specification (PDS) and application scenarios.All within spirit of the present utility model and principle, any amendment made, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (2)
1. auscultation mode switching detects a digital stethoscope automatically, comprises double end body part (10), bell receiver (11), stethoscope sound output aperture (12), bellows (13), sound transducer (15);
Bell receiver (11) and bellows (13) point are located at the upper relative both sides of double end body part (10); Stethoscope sound output aperture (12) is arranged in double end body part (10), and can rotate; When stethoscope sound output aperture (12) rotates, the sound import of front end can aim at bell receiver (11) or bellows (13) respectively; Sound transducer (15) is positioned at the tail end of stethoscope sound output aperture (12), for detecting auscultatory sound;
It is characterized in that, also comprise an auscultation pattern detector (14), auscultation mode detector (14) is arranged on the outer wall of stethoscope sound output aperture (12) hole, auscultation mode detector (14) towards with stethoscope sound output aperture (12) sound import towards consistent, for detect and discriminating digit stethoscope arrange auscultation mode;
Auscultation mode detector (14) is connected digital stethoscope signal process and control circuit with sound transducer (15) by cable (16).
2. auscultation mode switching as claimed in claim 1 detects digital stethoscope automatically, it is characterized in that:
Described auscultation mode detector (14) adopts eddy current sensor; Bell receiver (11) is different relative to eddy current sensor spacing with bellows (13), and bell receiver (11) and bellows (13) are metal material;
This eddy current sensor is connected in an oscillating circuit; According to amplitude bell receiver (11) relative to phase identification eddy current sensor or the bellows (13) of eddy current sensor internal oscillation signal, thus the auscultation mode that corresponding discriminating digit stethoscope is arranged is lungs sound pattern or hear sounds pattern.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520868162.7U CN205083509U (en) | 2015-11-03 | 2015-11-03 | Auscultation mode switch automated inspection digit stethoscope |
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| CN201520868162.7U CN205083509U (en) | 2015-11-03 | 2015-11-03 | Auscultation mode switch automated inspection digit stethoscope |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105266842A (en) * | 2015-11-03 | 2016-01-27 | 江苏物联网研究发展中心 | Auscultation mode switching automatic detection digital stethoscope and auscultation mode switching detection method |
| CN107550515A (en) * | 2017-09-15 | 2018-01-09 | 中国科学院微电子研究所 | Stethoscope system |
| CN108784679A (en) * | 2018-02-26 | 2018-11-13 | 河南善仁医疗科技有限公司 | The heart sound transducer position of multichannel heart sound identifies correcting method |
| CN113679408A (en) * | 2020-05-14 | 2021-11-23 | 广达电脑股份有限公司 | Auscultation device and auscultation method using same |
-
2015
- 2015-11-03 CN CN201520868162.7U patent/CN205083509U/en not_active Withdrawn - After Issue
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105266842A (en) * | 2015-11-03 | 2016-01-27 | 江苏物联网研究发展中心 | Auscultation mode switching automatic detection digital stethoscope and auscultation mode switching detection method |
| CN105266842B (en) * | 2015-11-03 | 2018-02-06 | 江苏物联网研究发展中心 | Auscultation mode switches automatic detection digital stethoscope and auscultation mode switching detection method |
| CN107550515A (en) * | 2017-09-15 | 2018-01-09 | 中国科学院微电子研究所 | Stethoscope system |
| CN108784679A (en) * | 2018-02-26 | 2018-11-13 | 河南善仁医疗科技有限公司 | The heart sound transducer position of multichannel heart sound identifies correcting method |
| CN108784679B (en) * | 2018-02-26 | 2021-03-23 | 河南善仁医疗科技有限公司 | Position recognition and correction method for multi-channel heart sound sensor |
| CN113679408A (en) * | 2020-05-14 | 2021-11-23 | 广达电脑股份有限公司 | Auscultation device and auscultation method using same |
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