CN87215502U - Tympanum electrode for use in artificial cochlea in external auditory canal - Google Patents
Tympanum electrode for use in artificial cochlea in external auditory canal Download PDFInfo
- Publication number
- CN87215502U CN87215502U CN 87215502 CN87215502U CN87215502U CN 87215502 U CN87215502 U CN 87215502U CN 87215502 CN87215502 CN 87215502 CN 87215502 U CN87215502 U CN 87215502U CN 87215502 U CN87215502 U CN 87215502U
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- China
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- electrode
- tympanum
- external auditory
- artificial cochlea
- bar
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- Electrotherapy Devices (AREA)
Abstract
The utility model discloses a non-embedding electrode for use in artificial cochlea in external auditory canal which suitable for patients including children whose sensory nerves are as deaf as a stone. The electrode device comprises a referrence electrode on an eardrum and a tympanum stimulating electrode, and outside sounds are transformed into electric signals by a sound processor and summonsed to inner ear residual hearing nerves to make patients generate musicality. The electrode is characterized in that the electrode can be embedded into patient's bodies without clinic operations, and the patients can insert the electrode into the external auditory canal or take out according to needs.
Description
External auditory meatus formula artificial cochlea described in the utility model is a kind of electrode system that makes in the anacusia patient reconstruction hearing devices with tympanum electrode.Be specially adapted to comprise child's sensory nerve anacusia patient.Belong to non-embedded type artificial cochlea and use external auditory meatus formula tympanum electrode.
This usefulness novel on April 14th, 1986 Shen please And authorize on the basis of (application number is 86202153) the sort of implanting type artificial cochlea electrode used therein of single track vicarious artificial cochlea device and grow up.
The used electrode of current various single track formula artificial cochlea devices belongs to embedded type more, promptly needs by the method for operation electrode system to be implanted in patient's the body.This artificial cochlea device is made up of two parts usually, and the one, the Sound Processor Unit that the patient carries, the 2nd, be implanted to intravital electrode system.Electrode system comprises stimulating electrode, reference electrode, receiving coil and electronic circuit.The signal of telecommunication that sound produces through Sound Processor Unit reaches electrode system by induction mode stimulates remaining acoustic nerve, makes the patient produce tone sense.This implantable electrode system major defect is the implant surgery complexity.Electrode material easily constitutes potential threat to human body safety.The physicochemical characteristics of counter electrode material is strict, makes to popularize on a large scale to be restricted.
The purpose of this utility model provides the non-embedded type single track external auditory meatus formula electrode that a kind of artificial cochlea device is used, and the patient can freely insert electrode or take out from external auditory meatus.
This utility model is made by following method; One is loaded on the ear mold that the external auditory meatus fore-end is made by self-solidifying dens supporter resin material in patient's cavity of auricular concha, and the ear mold surface is coated with the high coat of metal of chemical stability---the gold of excellent conductive performance.Its surface can be as the reference electrode like this.A mini jack is equipped with in the outside of ear mold, and the outfan of Sound Processor Unit joins by socket and stimulating electrode and reference electrode.This ear mold pastes closely mutually with skin.Front end (external auditory meatus inner end) at ear mold is equipped with a promontory of tympanum stimulating electrode, and this electrode tip is equipped with the contact made from platinum or conductive rubber, also can add the contact that conductive rubber coats in the metal contact outside.The center of stimulating electrode is the cone-shaped metal core bar, and the flexible good spring electrode bar of external coats with the medical grade silicone rubber tube, in the end near ear mold positioning catheter is housed.Its manufacture method is: pour into the interior external auditory meatus fore-end of patient's cavity of auricular concha with ear shape impression material earlier, obtain patient's ear mold model, turn over it and to make ear mold, ear mold and patient's skin of external auditory canal is closely connected like this, the length of electrode stem can be adjusted according to patient's concrete condition, the stimulating electrode contact withstands on the location for paste of tympanum and promontory of tympanum, and the patient only needs to do by external auditory meatus and moves operation in the tympanum and get final product.Part patient can wear tympanum electrode without this operation.Sound is transformed into the signal of telecommunication through the Sound Processor Unit that carries, and this signal is stimulated remaining acoustic nerve generation tone sense in the cochlea by stimulating electrode and reference electrode, reaches the purpose of rebuilding audition.
Characteristics of the present utility model be safety, convenient, cost is low, improved reliability, enlarged artificial cochlea's indication.Need not complicated electrode implant surgery.This utility model be applicable to because of the internal ear pathological changes cause deaf sensorineural hearing loss, because of in ear disorder cause deaf sensorineural hearing loss and teenage child's sensorineural hearing loss, can change electrode system with making in child's year increasing.
Describe in detail below in conjunction with accompanying drawing:
Fig. 1 uses external auditory meatus formula tympanum electrode for the artificial cochlea.
Fig. 2 is the external ear middle ear and the inner ear anatomy sketch map of human body.
Fig. 3 is tympanum electrode operation instruction figure.
The embodiment explanation:
Stimulating electrode contact (1) and (2) are one and conduct electricity very well, the stable contact that chemical stability is high, with have can be vertically an end of the dangler bar (3) made of crooked spring join, the other end of dangler bar (3) and positioning catheter (6) join, the outside of dangler bar (3) and positioning catheter (6) is with silicone rubber tube (4), and taper core bar (5) is installed in dangler bar (3) and the positioning catheter (6).One end of positioning catheter (6) is installed in the front end of ear mold (8), and positioning catheter (6) joins by the jack (11) in lead and the socket (9).The metal of ear mold (gold) coating (7) is with conducting electricity very well and stable chemical performance is plated to the non-stimulated metal of human body skin, be coated on the surface of ear mold (8), and the coat of metal (7) links to each other with jack (10) in the socket (9) by lead.Electrode contact (1) is a spherical metal, contact (2) adopts conductive silicon rubber, this will select according to the geometry and the size of patient's external auditory meatus, can select the contact of contact (1) separately for use as stimulating electrode, also contact (2) can be coated on the contact of the outside of contact (1) as stimulating electrode, electrode contact (1) or (2) are that the elastic force that produces when crooked vertically by dangler bar (3) is pressed on the promontory of tympanum (16).Dangler bar (3) is close around forming by thin stainless steel metal wire, can be vertically arbitrarily crooked and produce elastic force, can be with the irregular external auditory meatus bending of geometry, when the reason electrode is not inserted by external auditory meatus external auditory meatus is caused damage, the end face of electrode contact (1) or (2), especially the conductive silicon rubber contact (2) of plane keeps maximum contact area with the promontory of tympanum (16) with certain angle, has improved effect of stimulation.The length of taper core bar (5) and tapering are with the length variations of dangler bar (3).The effect of taper core bar (5) is: improve the stiffness and the irreversible ability that prevents that electrode stem (3) from deforming of dangler bar (3), silicone rubber tube (4) closely cooperates with positioning catheter (6) and dangler bar (3).Prevent that dangler bar (3) from contacting the phenomenon that is short-circuited with positioning catheter (6) with the external auditory meatus wall.
Claims (7)
1, a kind of external auditory meatus formula artificial cochlea of non-embedded type uses the tympanum electrode device, is to be used for the electrode that anacusia patient is rebuild hearing devices.Existing electrode is in the implant into body.It is characterized in that this electrode is by stimulating contact (1) and (2), dangler bar (3), positioning catheter (6), cone-shaped metal core bar (5), medical grade silicone rubber tube (4), ear mold (8), the coat of metal (7) and mini jack (9) to be formed.
2, external auditory meatus formula artificial cochlea tympanum electrode according to claim 1 is characterized in that stimulating the spherical platinum of contact (1) to make, or make by the conduction medical grade silicon rubber with contact (2).
3, external auditory meatus formula artificial cochlea tympanum electrode according to claim 1 is characterized in that the coat of metal (7) of the ear mold (8) made with self-solidifying dens supporter resin material is a reference electrode, and coated metal is a gold.Ear mold (8) also can adopt conductive silicon rubber to make, and gold need not be plated in its surface.
4, external auditory meatus formula artificial cochlea tympanum electrode according to claim 1 is characterized in that the dangler bar adopts the close coiled type of stainless steel metal wire.
5, external auditory meatus formula artificial cochlea tympanum electrode according to claim 1 is characterized in that the tapering of cone-shaped metal core bar (5) and length increase ， And with the growth of dangler bar (3) and places the terminal center of dangler bar (3).
6, artificial cochlea according to claim 1 is characterized in that with outer cochlea tympanum electrode the jack (11) in positioning catheter (6) and the socket (9) is connected, and metal-plated mould (7) is connected with the jack (10) in the socket (9).
7, artificial cochlea according to claim 1 is characterized in that with external auditory meatus formula tympanum electrode silicone rubber tube (4) closely is enclosed within the outer wall of dangler bar (3) and positioning catheter (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87215502 CN87215502U (en) | 1987-11-16 | 1987-11-16 | Tympanum electrode for use in artificial cochlea in external auditory canal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 87215502 CN87215502U (en) | 1987-11-16 | 1987-11-16 | Tympanum electrode for use in artificial cochlea in external auditory canal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN87215502U true CN87215502U (en) | 1988-07-13 |
Family
ID=4829625
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 87215502 Withdrawn CN87215502U (en) | 1987-11-16 | 1987-11-16 | Tympanum electrode for use in artificial cochlea in external auditory canal |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN87215502U (en) |
-
1987
- 1987-11-16 CN CN 87215502 patent/CN87215502U/en not_active Withdrawn
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |