CN2103328U - Embedded audiphone - Google Patents

Abstract

The utility model relates to an embedded hearing aid which can greatly improve the hearing. The embedded hearing aid is characterized in that the auditory ossicle of a human ear is embedded with a vibrator; the sound brought from the outside is firstly converted into an electrical signal by a sound picking device; through the amplification of a speech processing circuit and the amplitude balance, the electrical signal is sent into an activator; an electromagnetic signal is generated by the activator and is applied on the vibrator embedded in the auditory ossicle; the vibrator generates corresponding vibration, which directly drives a stirrup bone to send the sound into the inner ear to arouse the hearing. The embedded hearing aid has the advantage of true and vivid sound. Through the clinical observation, the hearing can be obviously improved; the embedded hearing aid starts a new approach for improving the hearing, and has favorable application foreground.

Description

Embedded audiphone

This utility model relates to a kind of hearing-aids with implant that increases substantially audition, mainly is made up of the circuit of the oscillator of implanting middle ear and excitation oscillator.

Chronic otitis media is a kind of commonly encountered diseases, frequently-occurring disease, and patient usually influences normal live and work because of auditory dysesthesia.Also have some patients to cause audition to descend significantly owing to drug use is excessive.The method that at present generally is used to improve one's hearing mainly is: one, carry out tympanoplasty, can improve part patient's audition, but for those former owing to pathological changes thereby cause auditory dysesthesia patients, the effect that improves one's hearing after its operation is difficult to satisfactory; Two, wear sonifer,,, make patient that tangible feeling of helplessness be arranged, and definition is very poor because sonifer can not verily import this extremely complicated sound wave of language in ear though can strengthen the volume of language.

For fear of above-mentioned the deficiencies in the prior art part, the utility model proposes a kind of sonifer of implanted, its principle is to implant oscillator at the stapes pedal plate of people's middle ear, extraneous sound equipment becomes the corresponding vibration of electromagnetic signal drive vibrator generation through pick up and electronic section, stapes and stapes pedal plate import vibration into internal ear, excite audition, make patient obtain good auditory rehabilitation.

Main thought of the present utility model is to convert external sound to electromagnetic signal by the circuit of being with pick up, act on the oscillator that connects ear bones, consequent vibration reaches internal ear with it, make and suffer that originally destructive transaudient chain is restored, and can increase substantially audition.This utility model comprises that mainly pick up (1) converts outside sound to the signal of telecommunication, through speech processing circuit (2) signal is amplified, and it is characterized in that driving excitation coil (3) by the power signal of speech processing circuit output.

Produce the action of a magnetic field in oscillator (4), in the implanted people's of excitation coil (3) the auditory meatus, oscillator is implanted on people's ear auditory ossicles.The composition of speech processing circuit device is: preamplifier (5) is a kind of low noise amplifier, and the ultra-weak electronic signal that pick up is sent into amplifies; ALC(6), amplifying circuit (7) is to amplify audio signal, and realizes automatic gain control by level control (10), guaranteeing will have enough amplification quantity when the input small-signal, along with the gain of signal boster descends.It is to be regulated by user to make the satisfied volume of controlling oneself that volume is regulated (8), and power amplification (9) is carried out power amplification with the audio amplification signal of prime, exports the excitation coil of enough power drive subordinates.

Oscillator is selected permanent-magnet alloy for use, and its shape adopts the garden ring-type.

Description of drawings:

Fig. 1: theory diagram

Fig. 2: speech processing circuit block diagram

Fig. 3: oscillator shape figure

Fig. 4: embodiment circuit diagram

1,--pick up 2,--speech processes 3,--excitation coil 4,--implantation oscillator 5,--preamplifier 6,--ALC 7,--amplification 8,--volume adjusting 9, the control of--power amplification 10,--level

(accompanying drawing) is further described this utility model now in conjunction with the embodiments:

Pick up is selected comparatively general electret condenser microphone at present for use, and it has advantages such as volume is little, in light weight, price is low, and its frequency response characteristic is good simultaneously, and signal to noise ratio is higher; The Language Processing circuit part is selected integrated Ic1=TA7223 for use, its external bias circuit by R1-R11, C1-C20, D1-D3, and the W1 that regulates volume form, numerical value is seen attached list.Excitation coil is selected high permeability plated film alloy soft magnetic material for use, and core length is 25mm, φ=4mm, and at the high strength enamelled wire coiled of iron core external φ=0.16mm, coil R=8 Ω.Oscillator is selected platinum magnetic permanent magnet material for use, and this material not only has good magnetic performance, also has good performance of technical process, and the overall dimensions of its enforcement is φ=2.8mm, and thickness is 0.2mm, its centre bore φ=0.8mm.

With operation oscillator is implanted in the ear on the auditory ossicles, activator is placed in the external auditory meatus.

Signal of telecommunication process electronic circuit amplification equilibrium when external trigger produces electromagnetic signal by activator again, and oscillator is subjected to the excitation of electromagnetic signal, produces vibration accordingly, directly drives stapes and imports internal ear into, excites audition, the clinical effectiveness highly significant.

This utility model has more truly compared to existing technology, sound advantage clearly, clinical observation, audition improves fairly obvious, its pure tone conductance listens valve (250HZ～2KHZ meansigma methods) between 21db～41.3db, the average valve of listening in operation back is at 26db～68db, the average audition 30.94db that obtains has reached social application level.This hearing-aids with implant is to improve one's hearing to have started new approach, has a good application prospect.

Subordinate list: embodiment component values table

Code name numerical value

C1 2.2μf

C2 1000Pf

C3 22μf

C4 0.01μf

C5 560Pf

C6 330μf

C7 100μf

C8 220μf

C9 47μf

C10 1μf

C11 560Pf

C12 47μf

C13 2200Pf

C14 4.7μf

C15 1000Pf

C16.C19

C17 680Pf

C18 0.047μf

D1 2AP9

D2 2AP9

Red 5 φ of D3

W1 10K

R1 2.2KΩ

R2 3.3KΩ

R3 220Ω

R4 22KΩ

R5 3.3KΩ

R6 1KΩ

R7 360KΩ

R8 6.2KΩ

R9 6.8KΩ

R10 220Ω

R11 2.2KΩ

Claims (5)

1, a kind of hearing-aids with implant that improves one's hearing, comprise pick up (1), signal amplifier (2), it is characterized in that, the back level of signal amplifier (2), connect a driving excitation coil (3) that produces magnetic field, and implant oscillator (4) on the auditory ossicles in people's ear.

2, hearing-aids with implant as claimed in claim 1 is characterized in that speech processing circuit (2) is a kind of low noise preamplifier (5)

3, hearing-aids with implant as claimed in claim 1 is characterized in that oscillator (4) selects permanent magnet material for use, is shaped as the garden ring.

4, hearing-aids with implant as claimed in claim 1 or 2 is characterized in that speech processes amplifier (2) can adopt integrated circuit.

5, hearing-aids with implant as claimed in claim 4 is characterized in that integrated circuit can adopt TA7223.

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