CN101744637B - Auscultation sensor - Google Patents
Auscultation sensor Download PDFInfo
- Publication number
- CN101744637B CN101744637B CN2010100004822A CN201010000482A CN101744637B CN 101744637 B CN101744637 B CN 101744637B CN 2010100004822 A CN2010100004822 A CN 2010100004822A CN 201010000482 A CN201010000482 A CN 201010000482A CN 101744637 B CN101744637 B CN 101744637B
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- sound
- adjustable barrier
- housing
- amplifying circuit
- resonant
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- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
The invention discloses an auscultation sensor, which is characterized in that a front resonant chamber and a back resonant chamber with the changeable cavity volume are formed in a case through the arrangement of an adjustable partition board, the front end of a front resonant cavity is provided with an opening, a vibration diaphragm is sealed at the opening, sound sensors are respectively placed in the two resonant cavities, and the sound sensors arranged in the two resonant cavities are fixedly connected to both sides of the adjustable partition board. The signal output ends of the two sound sensors respectively send signals into a mixed amplifying circuit through respective amplifying circuits for forming low-noise output signals to be played by a loudspeaker. The invention can solve the technical problems of difficult discrimination from the normal sound and the abnormal cacophony and small sound vibration frequency range of the traditional stethoscope.
Description
Technical field
The present invention relates to the medical sanitary apparatus device, relate in particular to operating means such as the auscultation heart, lungs sound, blood vessel sound and measurement patient blood pressure.
Background technology
At present, there are following several situations in clinical medical and nursing personnel and medico in using traditional stethoscope: the one, need distinguish normal sound and unusual noise when auscultation heart and lung sounds and blood vessel sound; The 2nd, sound shakes, and scope is smaller frequently; The 3rd, the noise ratio of pick off conduction is more, needs the auscultation personnel to filter noise artificially and distinguishes normal sound.Because above several situations, there is following drawback in traditional stethoscope: the one, and noise is too much excessive during auscultation; The 2nd, be unfavorable for that the medico learns auscultation and distinguishes normal unusual heart and lung sounds and blood vessel sound.
Summary of the invention
The purpose of this invention is to provide a kind of auscultation sensor, distinguish normal sound and unusual noise difficulty and the sound little technical problem of frequency scope of shaking to solve traditional stethoscope.
A kind of auscultation sensor of the present invention realizes that the technical scheme of foregoing invention purpose is: form forward and backward two resonant chambers that can change cavity volume by an adjustable barrier is set in housing, preceding resonator front opening, the opening part envelope has vibration membrane, be equipped with sound transducer respectively in two resonators, the sound transducer in described two resonators is fixedly connected on the both sides of adjustable barrier; The signal output part of described two sound transducers is sent signal into a mixing amplifying circuit by amplifying circuit separately respectively and is formed the low noise output signal for loudspeaker plays.
Aforesaid a kind of auscultation sensor, described adjustable barrier is fixed in the housing by sliding type, the adjustable barrier center is provided with a screw, and an adjustment leading screw passes screw and is mated, and adjusts to be connected on the external knob after the leading screw rear end passes housing.
The invention has the beneficial effects as follows: adjustable barrier is arranged in the cavity that housing surrounds, respectively two pick offs is arranged on the adjustable barrier both sides, can reach the volume that changes cavity, change the effect of the frequency of resonance.When acoustical signal conducted, two pick offs can offset noise, improves clarity of signal, improves the acoustical signal definition when helping medical personnel, medico's auscultation, improves clinical detection rate.
Description of drawings
Fig. 1 is the structural representation of a kind of embodiment of the present invention.
Fig. 2 is the signal output processing circuit of sound transducer of the present invention.
Fig. 3 is a mixing amplifying circuit schematic diagram of the present invention.
The specific embodiment
Structure of the present invention comprises housing, adjustable barrier, 2 pick offs.In housing,, an adjustable barrier forms forward and backward two resonant chambers that can change cavity volume by being set, preceding resonator front opening, the opening part envelope has vibrating diaphragm, be equipped with sound transducer respectively in two resonators, the sound transducer in described two resonators is fixedly connected on the both sides of adjustable barrier.Change cavity volume by adjusting knob.
One embodiment of the present of invention please refer to Fig. 1.Resonator 8 and back resonator 9 before adjustable barrier 3 is divided into housing 1.Adjustable for the cavity volume of resonator before making 8 and back resonator 9, adjustable barrier 3 by the fit form of slideway and slide rail or other flexible connection form, is placed in the housing 1.The front opening place envelope of preceding resonator 8 has vibrating diaphragm 7. Sound transducer 4,5 in described two resonators 8,9 is fixedly connected on the both sides of adjustable barrier 3.Referring to Fig. 2, the signal output part of described two sound transducers is sent signal into a mixing amplifying circuit by amplifying circuit separately respectively and is formed the low noise output signal for loudspeaker plays.Mix circuit theory and the structure of amplifying circuit, form, the outfan output low noise output signal of hybrid circuit U3 by two-way amplifying circuit U1, U2 and hybrid circuit U3 referring to Fig. 3.
Passed in the screw at adjustable barrier 3 centers by an adjustment leading screw 6, this adjustment screw mandrel 6 is connected on the external knob 2, changes cavity volume by adjusting knob 2.Described vibrating diaphragm 7 can be selected the polyester plastics material for use or be had other thin-film materials of identical functions.The other materials that separator material can be selected acrylic or Corvic material for use or have identical functions.
Auscultation sensor of the present invention can be exported the signals of telecommunication such as auscultation heart and lung sounds and blood vessel sound, finishes auscultation work by amplifying circuit, speaker.The Hz-KHz 20-1000Hz of auscultation sensor of the present invention.
Claims (2)
1. auscultation sensor, it is characterized in that: in housing, form forward and backward two resonant chambers that can change cavity volume by an adjustable barrier is set, preceding resonator front opening, the opening part envelope has vibration membrane, be equipped with sound transducer respectively in two resonators, the sound transducer in described two resonators is fixedly connected on the both sides of adjustable barrier; The signal output part of described two sound transducers is sent signal into a mixing amplifying circuit by amplifying circuit separately respectively and is formed the low noise output signal for loudspeaker plays.
2. a kind of auscultation sensor as claimed in claim 1, it is characterized in that: described adjustable barrier is fixed in the housing by sliding type, the adjustable barrier center is provided with a screw, an adjustment leading screw passes screw and is mated, and adjusts to be connected on the external knob after the leading screw rear end passes housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100004822A CN101744637B (en) | 2010-01-11 | 2010-01-11 | Auscultation sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100004822A CN101744637B (en) | 2010-01-11 | 2010-01-11 | Auscultation sensor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101744637A CN101744637A (en) | 2010-06-23 |
| CN101744637B true CN101744637B (en) | 2011-07-27 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010100004822A Expired - Fee Related CN101744637B (en) | 2010-01-11 | 2010-01-11 | Auscultation sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101744637B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103986993A (en) * | 2014-05-10 | 2014-08-13 | 苗延明 | Sound box bass compensator |
| CN104146727A (en) * | 2014-08-27 | 2014-11-19 | 苏州承乐电子科技有限公司 | Resonance type two-sided stethoscope |
| CN104757991B (en) * | 2015-03-24 | 2017-06-20 | 衣明 | Absorption stethoscope |
| CN111839582B (en) * | 2020-06-17 | 2022-08-09 | 西北工业大学 | Isolation type ear-covering electronic stethoscope |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4387784A (en) * | 1981-10-06 | 1983-06-14 | Hill Raymond R | Stethoscope with improved resonant cavity amplification |
| US4409983A (en) * | 1981-08-20 | 1983-10-18 | Albert David E | Pulse measuring device |
| CN2184405Y (en) * | 1994-03-12 | 1994-12-07 | 郭振桥 | Closed chest mutifunction stethoscope |
| CN101332094A (en) * | 2007-06-29 | 2008-12-31 | 成谢锋 | Two-path heart sound detection device of two auscultation heads |
| CN201328826Y (en) * | 2009-01-09 | 2009-10-21 | 王芳 | Novel stethoscope for children |
-
2010
- 2010-01-11 CN CN2010100004822A patent/CN101744637B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4409983A (en) * | 1981-08-20 | 1983-10-18 | Albert David E | Pulse measuring device |
| US4387784A (en) * | 1981-10-06 | 1983-06-14 | Hill Raymond R | Stethoscope with improved resonant cavity amplification |
| CN2184405Y (en) * | 1994-03-12 | 1994-12-07 | 郭振桥 | Closed chest mutifunction stethoscope |
| CN101332094A (en) * | 2007-06-29 | 2008-12-31 | 成谢锋 | Two-path heart sound detection device of two auscultation heads |
| CN201328826Y (en) * | 2009-01-09 | 2009-10-21 | 王芳 | Novel stethoscope for children |
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| Publication number | Publication date |
|---|---|
| CN101744637A (en) | 2010-06-23 |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110727 Termination date: 20140111 |