CN201930135U - Artificial cochlea with microstrip filters - Google Patents
Artificial cochlea with microstrip filters Download PDFInfo
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- CN201930135U CN201930135U CN2011200339031U CN201120033903U CN201930135U CN 201930135 U CN201930135 U CN 201930135U CN 2011200339031 U CN2011200339031 U CN 2011200339031U CN 201120033903 U CN201120033903 U CN 201120033903U CN 201930135 U CN201930135 U CN 201930135U
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- microstrip
- filter
- artificial cochlea
- receiving antenna
- electrode
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Abstract
The utility model discloses an artificial cochlea with microstrip filters, which is characterized in that a microstrip filter circuit formed by serially connecting a microstrip receiving antenna with a plurality of common electrodes is provided with a plurality of microstrip filters connected with a stimulating electrode, one end of each microstrip filter is connected with the stimulating electrode, the other end of each microstrip filter is connected with the microstrip filter circuit, and the microstrip receiving antenna, the microstrip filters, the stimulating electrode, the common electrodes and leads are packaged integrally by silicon rubber after being coated with biocompatible insulating materials. Compared with the prior art, the artificial cochlea is simple in structure, the size of the artificial cochlea is decreased, sealing and waterproofing of the circuit are facilitated, reliability and safety of implants are improved, the service life of the artificial cochlea is prolonged, surgical difficulty is reduced further, and comfort of patients is improved greatly.
Description
Technical field
This utility model relates to artificial organ and medical electric device thereof, specifically a kind of microstrip filter artificial cochlea.
Background technology
People's ear can be divided into external ear, middle ear and internal ear three parts.The main effect of external ear and middle ear be with external sound by tympanum and with it in succession 3 auditory ossicles conduct to internal ear.Internal ear is the Semen Glycines size approximately, and the likeness in form Crusta Limax claims cochlea again.Several ten thousand auditory perception cells---hair cell is arranged in the cochlea, and hair cell will convert electrochemical energy to from the acoustic energy (mechanical energy) that middle ear transmit and cause acous excitement, and the acoustic nerve excitement conducts to acoustic information cerebral cortex and produces audition with the form of electricity.Because the deafness that the inner ear hair cells pathological changes causes is a sensorineural deafness, does not still have effective Therapeutic Method at present.For in, the severe sensorineural deafness, adopt the sonifer voice emplifying to improve one's hearing usually.But then do not help much for the anacusia patient that does not have residual hearing.Studies show that the pathological changes of most anacusia patients mainly is positioned at the hair cell of internal ear, and mostly acoustic nerve is intact.The artificial cochlea utilizes the acoustic-electric transducer mount to replace the hair cell of loss of function in deaf person's cochlea, directly stimulates auditory nerve to make the deaf person produce audition.The artificial cochlea comprises that device outside (mainly comprising the speech processor) and body are implanted into device two parts, and the signal transmission that device outside and body are implanted between the device is finished by electromagnetic induction, is separated by for skin between the two, does not have lead to connect.In whole artificial cochlea system, body is implanted into the part that device is a most critical, and device outside has only the recovery that could realize audition by it, and electrod-array is that body is implanted into the of paramount importance ingredient of device.
At present, the artificial cochlea is the multiple tracks artificial cochlea, and promptly according to the position encoded principle of people's ear, external machine with the filtering of voice signal through N wave filter, extracts each band energy earlier, sends to implant through coding, modulation back by radio frequency then.After the implant received signal, carry out the demodulation sign indicating number, extract the energy information of N frequency range respectively, and then stimulate N implant electrode by decoding chip.
The implant of prior art mainly comprises the circuit of decoding chip, because circuit sealing complex process, the volume of decoding chip is bigger than normal, the hermetically-sealed construction of being done is quite complicated for it, increase the thickness of implant, also increased operating difficulty, the implant thickness subjective comfort that also can reduce the patient bigger than normal.And the water-tight of circuit is most important, and this can largely reduce the reliability of implant.
The utility model content
The purpose of this utility model is a kind of microstrip filter artificial cochlea who provides at the deficiencies in the prior art, adopt the submicron microstrip wave filter to replace the decoding chip technology, simplified implantation circuit, reduced artificial cochlea's volume greatly, and the water-tight of circuit is simple in structure, has improved reliability, has prolonged service life, further reduce the difficulty of operation, improved patient's comfort level greatly.
The concrete technical scheme that realizes this utility model purpose is: a kind of microstrip filter artificial cochlea is characterized in that being connected in series little band filter circuit that several public electrodes constitute by Microstrip Receiving Antenna is provided with the microstrip filter that several connect stimulating electrodes; Microstrip filter one end connects stimulating electrode, and its other end is connected with little band filter circuit; Microstrip Receiving Antenna is the ring-type sawtooth that is arranged on the circular radioprotective metallic film; Several microstrip filter and several placed in-line public electrodes that connect stimulating electrode connect into closed circuit by lead serial connection back with the Microstrip Receiving Antenna two ends; Be packaged into one by silica gel behind the insulant of Microstrip Receiving Antenna, microstrip filter, stimulating electrode, public electrode, lead and coating of circular radioprotective metallic film and biocompatibility.
The described microstrip filter that several connect stimulating electrodes and several placed in-line public electrodes are for corresponding and be set in parallel on little band filter circuit one by one.
Described stimulating electrode and public electrode are point-like or the ring electrode that platinum is made.
This utility model is compared with prior art simple in structure, has reduced artificial cochlea's volume, and the water-tight technology of circuit is simple, the reliability and the safety of implant have been improved, prolong service life, further reduced the difficulty of operation, improved patient's comfort level greatly.
Description of drawings
Fig. 1 is this utility model structural representation.
The specific embodiment
This utility model is work like this: Microstrip Receiving Antenna 1 receives the radiofrequency signal that carries voice signal, the form of its antenna can be multiple, concrete size is according to the difference of selected carrier frequency point and different, the mid frequency of each microstrip filter 2 has nothing in common with each other, its bandwidth is also different, auditory properties according to people's ear carries out non-linear division, each microstrip filter 2 is selected the envelope of the signal of design frequency range, and the filtering out of band signal, envelope waveform with inband signaling directly stimulates acoustic nerve by stimulating electrode 3 and public electrode 4 then, lead 5 is the platinum material, is used to connect Microstrip Receiving Antenna 1 and several microstrip filters 2, public electrode 4.
Microstrip Receiving Antenna 1 will receive the whole frequency voice signal that external machine directly modulates transmission through carrier wave and directly send to several microstrip filters 2, each microstrip filter 2 is with a stimulating electrode 3, the speech signal bandwidth difference of each wave filter 2 correspondence, the energy signal that it can directly extract each frequency range stimulates each stimulating electrode 3.According to 15 stimulating electrodes 3 of length operated by rotary motion of implant electrode, its number of electrodes can be adjusted according to parameters such as spacings.Microstrip filter 2 adopts the microwave circuit ADS of simulation software to design, N stimulating electrode 3 is corresponding one by one with N wave filter 2, microstrip filter 2 is the ceramic membrane of microwave-medium, adopt the metallization sputtering technology to make, for preventing the influence of microwave radiation to human body, coil bottom (promptly near brain one side) in Microstrip Receiving Antenna 1 is provided with the circular radioprotective metallic film 6 of one deck, and Microstrip Receiving Antenna 1 is encapsulated by silica gel with circular radioprotective metallic film 6 and be fixing.
More than just this utility model being described further, is not in order to the restriction this patent, and all is that this utility model equivalence is implemented, and all should be contained within the claim scope of this patent.
Claims (3)
1. a microstrip filter artificial cochlea is characterized in that the little band filter circuit that is connected in series several public electrodes (4) formation by Microstrip Receiving Antenna (1) is provided with the microstrip filter (2) that several connect stimulating electrodes (3); Microstrip filter (2) one ends connect stimulating electrode (3), and its other end is connected with little band filter circuit; Microstrip Receiving Antenna (1) is for being arranged on the ring-type sawtooth on the circular radioprotective metallic film (6); Several microstrip filter (2) and several placed in-line public electrodes (4) that connect stimulating electrode (3) connect into closed circuit by lead (5) serial connection back with Microstrip Receiving Antenna (1) two ends; Be packaged into one by silica gel behind the insulant of Microstrip Receiving Antenna (1), microstrip filter (2), stimulating electrode (3), public electrode (4), lead (5) and circular radioprotective metallic film (6) coating and biocompatibility.
2. according to the described microstrip filter artificial cochlea of claim 1, it is characterized in that the described microstrip filter (2) that several connect stimulating electrodes (3) and several placed in-line public electrodes (4) are for corresponding and be set in parallel on little band filter circuit one by one.
3. according to the described microstrip filter artificial cochlea of claim 1, it is characterized in that point-like or ring electrode that described stimulating electrode (3) and public electrode (4) are made for platinum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200339031U CN201930135U (en) | 2011-01-31 | 2011-01-31 | Artificial cochlea with microstrip filters |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200339031U CN201930135U (en) | 2011-01-31 | 2011-01-31 | Artificial cochlea with microstrip filters |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201930135U true CN201930135U (en) | 2011-08-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011200339031U Expired - Lifetime CN201930135U (en) | 2011-01-31 | 2011-01-31 | Artificial cochlea with microstrip filters |
Country Status (1)
| Country | Link |
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| CN (1) | CN201930135U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068337A (en) * | 2011-01-31 | 2011-05-25 | 上海力声特医学科技有限公司 | Micro-strip filter-based cochlear implant |
-
2011
- 2011-01-31 CN CN2011200339031U patent/CN201930135U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102068337A (en) * | 2011-01-31 | 2011-05-25 | 上海力声特医学科技有限公司 | Micro-strip filter-based cochlear implant |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20110817 Effective date of abandoning: 20120919 |