CN2522053Y

CN2522053Y - External-duct type micro artificial electronic cochlea

Info

Publication number: CN2522053Y
Application number: CN 01243972
Authority: CN
Inventors: 王晶
Original assignee: Individual
Current assignee: Individual
Priority date: 2001-07-19
Filing date: 2001-07-19
Publication date: 2002-11-27
Anticipated expiration: 2011-07-19

Abstract

The utility model discloses an external auditory canal micro artificial electronic cochlear, which can be worn in the cavum conchae of patients. An outer shell of the artificial cochlear is provided with a microphone, a digital integrated circuit module and a stimulating electrode connected in order; the external surface is provided with a reference electrode electroplated by metal ''platinum'' and 1 to N stimulating electrodes; the digital integrated circuit module consists of a vocode processor and a modem integrated circuit. The voice is identified and decomposed into digital signal of different frequency through the vocode processor of the digital integrated circuit module and the modem converts sound signal into DC stimulating signal, respectively stimulating the hearing nerve in different frequency range and making hearing for deaf patients.

Description

The external auditory meatus type cochlear implant that declines

This utility model relates to a kind of cochlear implant device that helps the nerve anacusia patient to produce audition, especially can wear external auditory meatus in the patient's cavity of auricular concha type cochlear implant that declines fully.

At present, known cochlear implant structure is made up of (1) portable boxlike speech processing system (2) stimulating electrode two parts coupling, and stimulating electrode is divided into two kinds of implanted stimulating electrode and non-built-in mode tympanum electrodes.The former incurs great expense (10～200,000 yuans) and complicated hands art; The latter is because stimulating electrode is placed in the tympanum and the tight thigmic stimulus of promontory of tympanum is big, difficulty, very easily accompanying infection are installed.At present, artificial cochlea's manufacturing process complexity still can not domesticize, how by national imports such as Australia, because China people with disability household economy burden is heavy, and expense that seldom can the Zhi Fuqi costliness.

The purpose of this utility model provides low external auditory meatus that the low-income household the accepts type cochlear implant that declines that is easy to of a kind of price, it is whole microstructure, its manufacturing process is simple relatively, be easy to production domesticization, can not only be at the electrical stimulation signal that acoustical signal is modulated into correlated frequency, and can arbitrarily wear or take out, the promontory of tympanum of electrical stimulation signal by external auditory meatus, tympanum or perforation patient conducts to cochlea, finally stimulates auditory nerve, be reduced into sound, reach the purpose of recovering audition

The purpose of this utility model is achieved in that in artificial cochlea's shell, electret microphone, digital integrated electronic circuit module, stimulating electrode are linked in sequence, record ear mold according to patient's external auditory meatus, cavity of auricular concha, and manufacture artificial cochlea's housing with ultraviolet photo-curing ear mold material, its outer surface has metal " platinum " to electroplate reference electrode and 1～N the stimulating electrode that forms, and the digital integrated electronic circuit module is integrated by sound code processor, demodulator circuit.The digital integrated electronic circuit module is installed in artificial cochlea's housing, and signal successor end is connected with miniature electret microphone, with the stimulating electrode welding of electrical stimulation signal outfan and artificial cochlea's shell.Before the use, need instil to penetrate to patient's external auditory meatus and contain antibiotic conductive paste, stimulating electrode promontory of tympanum abundant and external auditory meatus, tympanum and perforation of ear drum patient tympanum is coupled, when the artificial cochlea works, sound discerns and resolves into the digital signal of different frequency by the sound code processor of digital integrated electronic circuit module, demodulator is converted to 15 milliamperes, the galvanic stimulation signal of 125～8000Hz with acoustical signal, stimulate the auditory nerve of different frequency scope respectively, make deafness patient produce audition.

Owing to adopted such scheme, avoided complicated operation and side effect thereof the patient, the type artificial cochlea that can directly external auditory meatus be declined wears in cavity of auricular concha, external auditory meatus, wear attractive in appearance firmly, reduced patient's inferiority complex; Used the digital integrated electronic circuit of economize on electricity more simultaneously, the structure of having dwindled the artificial cochlea has reduced cost of manufacture, is easier to clinical practice; The type artificial cochlea threshold of audibility, resolution are a little less than present embedded type multi-channel artificial cochlea though external auditory meatus declines, but its price only is present import artificial cochlea's 1/10～1/20, few side effects, for ease of maintenaince and upgrading, the barrier people with disability family of listening that helps low income popularizes and early stage Language Training.

Below in conjunction with drawings and Examples this utility model is further specified.

Fig. 1 is the decline structure chart of type cochlear implant of external auditory meatus.

Fig. 2 is the external auditory meatus type cochlear implant profile that declines.

Fig. 3 is the external auditory meatus type cochlear implant circuit block diagram that declines.

The output of 1. battery flats, 2. signals, 11. code processor 12. demodulators of 7. 1～N stimulating electrode of input socket 3. volume adjustment knobs 4. electret microphones, 5. passages, 6. reference electrodes, 8. digital integrated electronic circuit modules, 9. breathers, 10. cochlea shells among the figure

In Fig. 1: external auditory meatus declines and has passage 5 on type cochlear implant cavity of auricular concha exposed parts and the nearly tympanum end housing of the external auditory meatus body, be connected with breather 9, external auditory meatus declines and is separately installed with on the type cochlear implant cavity of auricular concha exposed parts housing: electret microphone 4; Volume adjustment knob 3; Signal output, input socket 2; Battery flat 1.The intensity that volume adjustment knob 3 is regulated electrical stimulation signal, signal accessory power outlet 2 can be drawn electrical stimulation signal to do signal analysis, cochlear implant Performance Detection; The socket that also is convertible into external microphone uses during for speech therapy.Battery flat can load the 1.4V button battery.Cochlear implant and skin of cavity of concha contact surface electroplate a ring layer metal " platinum " and with shell in the reference electrode welding, the external auditory meatus end be electroplate with 1～N belt stimulating electrode 7 that keeps at a certain distance away respectively with shell in the stimulating electrode of corresponding frequencies weld mutually.

In Fig. 2: simply introduced external auditory meatus decline type cochlear implant internal structure and connected mode.

In Fig. 3: introduced the external auditory meatus type cochlear implant circuit block diagram that declines.

Claims

1. external auditory meatus type cochlear implant that declines, this utility model is by electret microphone, the digital integrated electronic circuit module, stimulating electrode is linked in sequence, be installed in the ear mold housing, it is characterized in that: according to patient's external auditory meatus, cavity of auricular concha is recorded ear mold, and with ultraviolet photo-curing ear mold material artificial cochlea housing, the reference electrode that its appearance has metal " platinum " to electroplate to form and 1～N stimulating electrode digital integrated electronic circuit module are by the sound code processor, demodulator circuit is integrated, the digital integrated electronic circuit module is installed in artificial cochlea's shell body, signal imports end into and is connected with miniature electret microphone, the stimulating electrode welding of electrical stimulation signal outfan and artificial cochlea's shell.

2. the external auditory meatus according to claim 1 type cochlear implant that declines is characterized in that: external auditory meatus declines and has passage on type cochlear implant cavity of auricular concha exposed parts and the nearly tympanum end housing of the external auditory meatus body, is connected with breather.

3. the external auditory meatus according to claim 1 type cochlear implant that declines is characterized in that: be separately installed with electret microphone, volume adjustment knob, signal output input socket, battery flat on the cavity of auricular concha exposed parts housing.

4. the external auditory meatus according to claim 1 type cochlear implant that declines, it is characterized in that: artificial cochlea and skin of cavity of concha contact surface electroplate layer of metal " platinum " and with the intravital reference electrode welding of shell, the external auditory meatus end is electroplate with the belt stimulating electrode that 1～N keeps at a certain distance away, respectively with housing in the stimulating electrode of corresponding frequencies weld mutually.