CN208988887U - Transformation pure tone test device - Google Patents
Transformation pure tone test device Download PDFInfo
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- CN208988887U CN208988887U CN201821091218.2U CN201821091218U CN208988887U CN 208988887 U CN208988887 U CN 208988887U CN 201821091218 U CN201821091218 U CN 201821091218U CN 208988887 U CN208988887 U CN 208988887U
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- mcu controller
- earmuff
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Abstract
The utility model discloses transformation pure tone test devices, including sealing earmuff, earphone, audiometer, aerating and exhaust device, MCU controller and pressure sensor, the earphone and pressure sensor are both secured in sealing earmuff, the earphone is connect with audiometer, the aerating and exhaust device connect with sealing earmuff and can be inflated for deflated into sealing earmuff, the aerating and exhaust device is connect with MCU controller, and the pressure sensor is connect with MCU controller.The utility model is using easy device and method, air pressure adjustment can be carried out during pure tone test, it realizes auditory function monitoring and more diagnostic messages is provided, improve testing efficiency, and a kind of means are provided to improve hearing test accuracy, and improve verification tool for other hearing test methods.It is the new equipment and method of a kind of easily test middle ear acoustic state.
Description
Technical field
The utility model relates to Audiometry field, in particular to a kind of transformation pure tone test device.
Background technique
Hearing test is that most conventional and most important inspection item, result can reflect the journey of hearing loss in otology outpatient service
The position of degree, property and lesion is widely used on the clinic diagnosis such as ear-nose-throat department and experience.Conventional hearing test item at present
Mesh has pure tone test and the anti-test of acoustic conductance (resistance) etc..
Pure tone test is the test auditory acuity, standardized subjective behavior reaction audiometry, it includes air conduction hearing threshold and bone conduction
Threshold of audibility test.By observation conductance and bone conduction threshold as a result, may infer that the factor of hearing impairment is phonosensitive nerve, conduction
It is property or Combination.But in clinical trial, it is found that the test result of many conductibility hearing impaired listeners is rendered as
Phonosensitive nerve, this is because Hearing caused by conduction factor often has in low frequency region, and human ear is to low-frequency sound
Sensibility is relatively weak, and large error can be generated when testing using osophone, so as to cause the deviation of testing result.
The anti-test of acoustic conductance (resistance) is also known as middle ear analysis, is generally used for identifying conductive hearing loss and Combination hearing damage
It loses.Wherein tympanogram is the acoustic immittance project most often done, and the shape by observing tympanogram may infer that with the presence or absence of middle ear pathology
Become, but the test item is an objective examination, subject does not have to make behavior response as doing pure tone test when test, directly
It is measured by instrument as a result, according to the literature, some experts think under current technology, the accuracy of tympanogram result may not
Foot 50% is easy large error occur due to misoperation or subject mismatch.
Utility model content
The utility model provides a kind of transformation pure tone test device that testing efficiency and test accuracy can be improved.
One aspect according to the present utility model provides transformation pure tone test device, which is characterized in that including sealing ear
Cover, earphone, audiometer, aerating and exhaust device, MCU controller and pressure sensor, the earphone and pressure sensor are both secured to
It seals in earmuff, the earphone is connect with audiometer, and the aerating and exhaust device connect with sealing earmuff and can be into sealing earmuff
Inflated for deflated, the aerating and exhaust device connect with MCU controller and is controlled by MCU controller, the pressure sensor and MCU
Controller connects and can be to MCU controller sending pressure signal.Earphone can play test sound to receptor as a result, and audiometer can
The Hearing Threshold of test subject.The pressure signal that MCU controller is transmitted according to pressure sensor controls aerating and exhaust device to close
It is inflated or loses heart in envelope earmuff, carry out test process under the continually changing state of pressure, substantially increase test
Efficiency and accuracy.
In some embodiments, the sealing earmuff includes earmuff and air bag sealing ring, and the air sac sealing circle is fixed
It is connected to the edge of earmuff.Earmuff can shroud completely the external ear of subject as a result, and air bag can be close to the face with subject,
Prevent air internal or external after inflating or losing heart from entering.
In some embodiments, the aerating and exhaust device includes air inlet pipe, gas outlet, three-way magnetic valve and air pump, institute
It states air inlet pipe and gas outlet is connect with three-way magnetic valve, the three-way magnetic valve is connect with air pump.Air pump can be to earmuff as a result,
Inside addition excludes air, changes air pressure.
In some embodiments, the aerating and exhaust device further includes driving circuit for electromagnetic valve, the solenoid-driven electricity
Road is connected between three-way magnetic valve and MCU controller, and the air pump connect with MCU controller and controlled by MCU controller.By
This, driving circuit for electromagnetic valve can drive three-way magnetic valve to work, and MUC can control air pump and by driving circuit for electromagnetic valve control three
The work of three-way electromagnetic valve.
In some embodiments, further include serial communication module and host computer, the serial communication module respectively with MCU
Controller, audiometer are connected with host computer.Serial communication module is able to achieve logical between host computer and MCU and audiometer as a result,
News.
The beneficial effects of the utility model are: the utility model provides a kind of device of simplicity, it can be in pure tone test
Air pressure adjustment is carried out in the process, then allows subjects subjective to react and record as a result, realizing auditory function monitoring and providing more
Diagnostic message, first is that improve testing efficiency, second is that for improve hearing test accuracy provide a kind of means, third is that for its
He improves verification tool at hearing test method.Such as when air pressure change subjects subjective describe stimulation sound loudness change or
Do not change the state that Hearing Threshold state judges middle ear acoustic efficiency or sound conduction function that can be combined with, and is examined with other auditory functions
The fruit that comes to an end mutually is confirmed, and is the new equipment and method of a kind of easily test middle ear acoustic state.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the transformation pure tone test device of one embodiment of the utility model；
Fig. 2 is the sealing earmuff and associated connecting member structural schematic diagram of transformation pure tone test device shown in Fig. 1.
Specific embodiment
Utility model is described in further detail with reference to the accompanying drawing.
Embodiment 1
Fig. 1 and Fig. 2 schematically shows a kind of transformation pure tone test device of embodiment according to the present utility model.
Referring to Figures 1 and 2, transformation pure tone test device include sealing earmuff 1, earphone 2, audiometer 3, aerating and exhaust device 4,
MCU controller 5, pressure sensor 6, serial communication module 7 and host computer 8.
Sealing earmuff 1 includes earmuff 11 and air bag sealing ring 12, and air sac sealing circle 12 is fixedly connected on the edge of earmuff 11.
Earmuff 11 is in semicircle sphere type, and earmuff 11 can shroud completely entire human ear, and seals earmuff 11 using air sac sealing circle 12
Edge.Air sac sealing circle 12 is a ring-shaped cylinder, and air sac sealing circle 12 can be close to and subject's head and face, prevent from inflating or
Internal or external air enters after losing heart.
Earphone 2 is fixed in sealing earmuff 1, and earphone 2 is conductance earphone, and earphone 2 is connect by conducting wire with audiometer 3.Ear
Machine 2 can play test sound, the Hearing Threshold of 3 energy test subject of audiometer to the ear of the subject covered in sealing earmuff 1.
Aerating and exhaust device 4 with sealing earmuff 1 connect and can to seal earmuff 1 in it is inflated for deflated, aerating and exhaust device 4 and
The connection of MCU controller 5 is simultaneously controlled by MCU controller 5.Air pump 44 connect with MCU controller 5 and is controlled by MCU controller 5.
Aerating and exhaust device 4 includes air inlet pipe 41, gas outlet 42, three-way magnetic valve 43, air pump 44 and driving circuit for electromagnetic valve
45.The end of air inlet pipe 41 and gas outlet 42 be respectively positioned on sealing earmuff 1 in, the other end of air inlet pipe 41 and gas outlet 42 respectively with
Three-way magnetic valve 43 connects, and three-way magnetic valve 43 is connect with air pump 44.Air pump 44 passes through the control and conversion of three-way magnetic valve 43
Air can be added or excluded by the inside of 42 pairs of sealing earmuffs 1 of air inlet pipe 41 and gas outlet, made to seal the air pressure in earmuff 1 and connected
Continue and equably changes.Driving circuit for electromagnetic valve 45 is connected between three-way magnetic valve 43 and MCU controller 5, MCU controller 5
Three-way magnetic valve 43 is controlled by driving circuit for electromagnetic valve 45 to work.
Pressure sensor 6 is fixed in sealing earmuff 1, and pressure sensor 6 is connect with MCU controller 5, pressure sensor 6
The pressure in sealing earmuff 1 can be detected and transmit real-time pressure signal to MCU controller 5.MCU controller 5 is according to receiving
44 cooperating of three-way magnetic valve 43 and air pump of pressure signal control aerating and exhaust device 4.
Serial communication module 7 can be connect respectively with MCU controller 5, audiometer 3 and host computer 8, it can be achieved that host computer 8 with
Communication between MCU controller 5 and audiometer 3.The data that audiometer 3 and MCU controller 5 measure pass through serial communication module 7
It is transmitted to host computer 8, the data received can be sent again to MCU controller 5 and audiometer 3 to control each component work by host computer 8
Make and plays suitable test tone.Host computer 8 may also display and adjust the parameter such as air pressure in testing, the test sound intensity, test frequency
Rate etc..
Embodiment 2
The transformation pure tone test method of the transformation pure tone test device using embodiment 1 is present embodiments provided, including such as
Lower step:
Pure tone conductance Hearing Threshold under S1, acquisition normal pressure: to seal earmuff 1 on subject wears, do not changing earmuff
In the case where interior pressure, test sound is played to subject with earphone 2, is tested by audiometer 3, the pure of subject can be measured
Sound conductance Hearing Threshold.Multiple frequencies are selected to carry out the survey of pure tone conductance Hearing Threshold under normal pressure to subject for test frequency
Examination；The frequency of Hearing Threshold include: 125Hz, 250Hz, 500Hz, 750Hz, 1000Hz, 1500Hz, 2000Hz, 3000Hz,
4000Hz, 6000Hz and 8000Hz.
S2, setting test tone intensity: the pure tone conductance Hearing Threshold measured in selection step S1 increases by a predetermined sound intensity value
For test tone intensity.The predetermined sound intensity is 10dB~20dB, preferably 10dB.The sound of 10dB higher than the threshold of audibility stimulates in multiple times for a long time
Human ear will not damage, and in specific implement, given stimulating sound maximum is no more than the intensity of threshold of audibility 30dB, avoid into one
Walk hearing damage.
S3, carry out hearing test under transformation and record test result: opening aerating and exhaust device 4 makes the test ear of subject
External auditory canal in pressure from being just pressed onto negative pressure consecutive variations, while with the test tone intensity under a test frequency and the frequency to
Test ear plays test tone and records the feedback result of tester；Pressure is tested to connect in 2 seconds from+400daPa to -600daPa
Continuous even variation.
The pressure limit that+400daPa arrives -600daPa is generallyd use in conventional Impedance audiometry, such as worries that pressure limit becomes
In the case that change greatly may damage subject very much, tester can also carry out the selected of pressure limit in equipment.
In actual operation, it is desirable that the minimum+200daPa of pressure controllable range arrives -200daPa；In+200daPa to+400daPa
Any 1daPa is optional；Any -1daPa is optional in -600 to -200daPa.
Test sound is played while pressure change records the anti-to the sense organ of test sound of subject after test sound stops
It answers；Sense organ reaction refers to that stimulating sound has been changed or remained unchanged during subject feels to sound, the spy of variation
It is big after small when big when sign includes:, first big after small, first small, from becoming smaller greatly, become larger from small.To prevent subject to experience not true
It is fixed, it repeats to sound 2~3 times, next operation can be entered if subject experiences consistent twice.
S4, the test result that step S2~S3 obtains full frequency band is repeated, to each Hearing Threshold selected in step S1
Frequency is tested, the test result of full frequency band.
The principle of above-mentioned test method are as follows: by changing the pressure of external auditory canal, the position of eardrum is made to change while band
Dynamic auditory ossicular chain, makes the transaudient state of middle ear change, in barotropic state, the transaudient efficiency of middle ear can be improved, threshold of audibility meeting
At trend is improved, when negative pressure state, the transaudient efficiency of middle ear can be reduced, and the threshold of audibility can be at the trend of exacerbation.In general, middle ear function is normal
Subject, whether its hearing is normally, will not because external auditory canal it is slight pressure continuity variation due to cause Hearing Threshold
Change, so in pressure change will not sensory stimuli sound change；But if then can there are the subject of Middle Ear Diseases
There is more apparent changes of threshold due to this faint pressure change.Under different test frequencies, it is this variation have compared with
For apparent difference, the clinically present Low Medium Frequency region (125-1000Hz) of the abnormal multilist of middle ear function.
Such as: the conductibility hearing impairment subject of otopiesis, is mostly to cause to rouse due to its dysfunction of eustachian tube
Air pressure imbalance inside and outside film causes, i.e. the pressure of external auditory canal is higher, and the pressure of middle ear is relatively low.Change external auditory canal pressure at this time,
As external auditory canal pressure is lower, eardrum is gradually restored to normal location status, and transaudient ability improves, the threshold of audibility of subject with
Improve, subject can react the stimulating sound heard and then reduce again from small become larger, this to change closer to low frequency region more
Obviously.By observation change pressure before and after conductance threshold value situation of change, can reflect subject's auditory sensitivity state, in
Ear function state and the middle ear factor or possibility that the symptoms such as tinnitus, ear muffle, hyperakusis can be excluded.
Embodiment 3
The present embodiment is the specific operation process of embodiment 2, is included the following steps:
1), subject puts on the sealing earmuff 1 of test, then routinely pure tone test method obtain subject pure tone
Conductance Hearing Threshold.The frequency of Hearing Threshold include: 125Hz, 250Hz, 500Hz, 750Hz, 1000Hz, 1500Hz, 2000Hz,
3000Hz, 4000Hz, 6000Hz and 8000Hz.
2), selecting a test frequency, above threshold 10dB carries out pressure change test.Such as the regulatory thresholds of 500Hz are
30dBHL then selectes 500Hz, 40dBHL and carries out pressure change test.
3), operator illustrates test method to subject: next you can hear that earphone issues a pure tone stimulating sound, together
When earmuff in pressure can change 2 seconds, you may feel some discomforts, such as bored swollen sense, but such case will not cause you
Any damage, stimulating sound could you tell me whether feel that sound changes during pressure change after stopping.
4), operator clicks the control button in pertinent instruments, and earphone 2 is made to play the same of 500Hz, 40dBHL pure tone
When, MCU controller 5 controls the air pump 44 of aerating and exhaust device 4 and three-way magnetic valve 43 works, and pressure sensor 6 transmits real-time letter
Number give MCU controller 5 so that MCU controller 5 in real time adjust aerating and exhaust device 4 working condition.Make to seal earmuff 1 in 2 seconds
Interior pressure continuous and even variation from+400daPa to -600daPa.
5) after, pure tone stops, operator inquires whether subject feels that stimulating sound changes, what kind of variation, such as
Subject's significant reaction feels that stimulating sound first becomes larger, and then gradually becomes smaller again, and operator's record is as a result, when discovery subject's
Reaction is uncertain, can repeat to sound 2~3 times.
6) after, testing, operator is combined as a result, judging subject with the presence or absence of factors such as Functional Impairment of Middle Ears.
It changes because subjects subjective experiences stimulating sound, it is believed that its middle ear especially eardrum function has exception, and then it is felt
Stimulating sound is first big after small, meets with the illness of otopiesis, and consideration may be otopiesis.
The utility model can carry out air pressure adjustment using easy method during pure tone test, realize auditory function
More diagnostic messages are monitored and provided, improve testing efficiency, and provide one kind to improve hearing test accuracy
Means, and verification tool is improved for other hearing test methods.It is a kind of new equipment of easily test middle ear acoustic state
And method.
Above-described is only some embodiments of the utility model.For those of ordinary skill in the art,
Without departing from the concept of the present invention, various modifications and improvements can be made, these belong to practical new
The protection scope of type.
Claims (5)
1. transformation pure tone test device, which is characterized in that including sealing earmuff (1), earphone (2), audiometer (3), inflation/deflation dress
(4), MCU controller (5) and pressure sensor (6) are set, the earphone (2) and pressure sensor (6) are both secured to sealing earmuff
(1) in, the earphone (2) connect with audiometer (3), and the aerating and exhaust device (4) connect with sealing earmuff (1) and can be to sealing
Inflated for deflated in earmuff (1), the aerating and exhaust device (4) connect with MCU controller (5) and is controlled by MCU controller (5),
The pressure sensor (6) connect with MCU controller (5) and can be to MCU controller (5) sending pressure signal.
2. transformation pure tone test device according to claim 1, which is characterized in that the sealing earmuff (1) includes earmuff
(11) and air bag sealing ring (12), the air sac sealing circle (12) are fixedly connected on the edge of earmuff (11).
3. transformation pure tone test device according to claim 2, which is characterized in that the aerating and exhaust device (4) include into
Tracheae (41), gas outlet (42), three-way magnetic valve (43) and air pump (44), the air inlet pipe (41) and gas outlet (42) are with three
Three-way electromagnetic valve (43) connection, the three-way magnetic valve (43) connect with air pump (44).
4. transformation pure tone test device according to claim 3, which is characterized in that the aerating and exhaust device (4) further includes
Driving circuit for electromagnetic valve (45), the driving circuit for electromagnetic valve (45) be connected to three-way magnetic valve (43) and MCU controller (5) it
Between, the air pump (44) connect with MCU controller (5) and is controlled by MCU controller (5).
5. transformation pure tone test device according to any one of claims 1 to 4, which is characterized in that further include serial communication
Module (7) and host computer (8), the serial communication module (7) respectively with MCU controller (5), audiometer (3) and host computer (8)
Connection.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821091218.2U CN208988887U (en) | 2018-07-10 | 2018-07-10 | Transformation pure tone test device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821091218.2U CN208988887U (en) | 2018-07-10 | 2018-07-10 | Transformation pure tone test device |
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| CN208988887U true CN208988887U (en) | 2019-06-18 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009151A (en) * | 2018-07-10 | 2018-12-18 | 佛山市威耳听力技术有限公司 | Transformation pure tone test device and method |
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2018
- 2018-07-10 CN CN201821091218.2U patent/CN208988887U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109009151A (en) * | 2018-07-10 | 2018-12-18 | 佛山市威耳听力技术有限公司 | Transformation pure tone test device and method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20210816 Address after: 518000 Room 903, 9 / F, No. 54 and 56, Zhongshan Second Road, Yuexiu District, Guangzhou, Guangdong Patentee after: Guangzhou Shangting Medical Instrument Co.,Ltd. Address before: 528000 Room 201, block 13, 17 Yingyin Road, Chancheng District, Foshan City, Guangdong Province Patentee before: FOSHAN WEIER HEARING TECHNOLOGY Co.,Ltd. |