CN111135459B - Artificial cochlea implant - Google Patents
Artificial cochlea implant Download PDFInfo
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- CN111135459B CN111135459B CN202010046322.5A CN202010046322A CN111135459B CN 111135459 B CN111135459 B CN 111135459B CN 202010046322 A CN202010046322 A CN 202010046322A CN 111135459 B CN111135459 B CN 111135459B
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- magnetic core
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- implant
- magnet
- shaped grooves
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
- A61N1/00—Electrotherapy; Circuits therefor
- A61N1/18—Applying electric currents by contact electrodes
- A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
- A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
- A61N1/36036—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation of the outer, middle or inner ear
- A61N1/36038—Cochlear stimulation
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61F—FILTERS IMPLANTABLE INTO BLOOD VESSELS; PROSTHESES; DEVICES PROVIDING PATENCY TO, OR PREVENTING COLLAPSING OF, TUBULAR STRUCTURES OF THE BODY, e.g. STENTS; ORTHOPAEDIC, NURSING OR CONTRACEPTIVE DEVICES; FOMENTATION; TREATMENT OR PROTECTION OF EYES OR EARS; BANDAGES, DRESSINGS OR ABSORBENT PADS; FIRST-AID KITS
- A61F11/00—Methods or devices for treatment of the ears or hearing sense; Non-electric hearing aids; Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense; Protective devices for the ears, carried on the body or in the hand
- A61F11/04—Methods or devices for enabling ear patients to achieve auditory perception through physiological senses other than hearing sense, e.g. through the touch sense
Abstract
The invention discloses an artificial cochlea implant which comprises an implanted electrode, a decoder, a receiving coil, a coil spring plate, an implanted magnet and encapsulation silica gel thereof, wherein the implanted electrode, the decoder and the receiving coil are sequentially connected, the receiving coil is provided with an outgoing wire, the outgoing wire is electrically connected with the decoder, the coil spring plate is fixed on the inner side of the receiving coil, the implanted magnet is fixed on the inner side of the coil spring plate, and the encapsulation silica gel covers the rest parts except an electrode stimulating end of the implanted electrode. According to the artificial cochlea implant, the coil elastic sheet is arranged, so that the implanted magnet is firmly fixed on the inner side of the receiving coil, displacement cannot occur, the receiving coil and the outer coil have good positioning accuracy, and meanwhile, the structural strength of the receiving coil area is improved, so that the artificial cochlea implant has good shock resistance.
Description
Technical Field
The invention relates to an artificial cochlea, in particular to an artificial cochlea implant.
Background
The artificial cochlea consists of an implant body in the body and a sound processor in the body. The external sound processor collects sound signals through the microphone, converts the sound signals into electric signals, then the transmitting coil transmits the signals to the receiving coil of the internal implant, the receiving coil transmits the received signals to the decoder part of the implant, decodes and converts the received signals into corresponding electric pulse signals, and the implanted electrodes stimulate ganglion cells in cochlea to excite auditory nerves and transmit sound information into brain to generate hearing.
The signal transmission between the external sound processor and the internal implant is completed through electromagnetic induction, and the external sound processor and the internal implant are separated by skin and are not connected by leads. In the whole artificial cochlea, the implant is the most critical part, the implant needs to work in the human body safely and reliably for a long time, and the external sound processor can only realize the functions thereof. The receiving coil of the implant is an important component, electric signals and energy transmission are realized through the receiving coil, and the reliability of the receiving coil and the accurate positioning of the transmitting coil of the implant and the sound processor directly influence the safety and the effectiveness of the artificial cochlea.
In the current artificial cochlea, the receiving coil of the implant is usually encapsulated and coated by silica gel, and the silica gel has good softness compared with other materials, good biological safety and good somatosensory comfort level of a patient, and the defect that the strength of the silica gel is lower and the receiving coil of the implant is lack of effective safety protection.
In the prior art, because the magnetic pole adsorption force of the magnet is needed to be used for positioning between the internal device and the external device so as to facilitate the information interaction and the energy transmission between the internal device and the external device, the conventional magnet implanting mechanism comprises a round cake-shaped magnetic core which is packaged in a thin-wall metal shell and is magnetized in the axial direction, and has the advantages that the magnets are positioned accurately, but the metal shell is generally thinner due to the limitation of the size of the product, and the round cake-shaped magnetic core is usually composed of rare earth magnets such as samarium cobalt or neodymium iron boron with low strength and strong brittleness. If the shell is damaged, the rare earth magnets which are not provided with biological safety, such as samarium cobalt, neodymium iron boron and the like, can be contacted with human tissues, and the threat to human health is generated. If the magnetic core is broken, the magnetic pole adsorption force positioning can not be carried out with the external device, so that the artificial cochlea can not work normally. The second method is to arrange a certain number of cylindrical magnetic cores in a thin-wall metal shell, and radial magnetization is adopted for the magnetic cores, so that the disadvantage of the arrangement is that the center positioning function is poor.
Besides the requirements of biological safety and mechanical strength, the implanted magnet also needs good fixing measures in human body, if the implanted magnet displaces in human body, firstly, physiological damage is caused to human body, and secondly, in-vivo and in-vitro devices cannot be effectively positioned, so that the artificial cochlea cannot normally operate.
In the use process of the artificial cochlea, an external transmitting coil needs to be frequently taken off, an existing artificial cochlea implanted magnet is only encapsulated in silica gel, the implanted magnet is not effectively fixed, in the removal process of the transmitting coil, the traditional pie implanted magnet can receive certain torsion force due to different directions and angles, and under severe conditions, the implanted magnet can possibly generate micro displacement to be involved in human muscle tissues, so that patients feel uncomfortable.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention is to provide a cochlear implant that can firmly fix an implant magnet without displacement.
In order to achieve the above object, the present invention provides a cochlear implant, which comprises an implant electrode, a decoder, a receiving coil, a coil spring, an implant magnet and encapsulation silica gel thereof, wherein the implant electrode, the decoder and the receiving coil are sequentially connected, the receiving coil is provided with a lead wire, the lead wire is electrically connected with the decoder, the coil spring is fixed on the inner side of the receiving coil, the implant magnet is fixed on the inner side of the coil spring, and the encapsulation silica gel encapsulates the rest parts except the electrode stimulating end of the implant electrode.
The coil spring is provided with a protruding main protruding part, and the main protruding part is close to the lead-out wire.
The coil spring is also provided with a plurality of auxiliary protruding parts.
The main protruding part is a plane, and the auxiliary protruding part is a cambered surface.
The main protrusion is provided with a main protrusion through hole, and the auxiliary protrusion is provided with an auxiliary protrusion through hole.
Some or all of the auxiliary protruding parts are provided with elastic sheet threaded holes, the implanted magnet is provided with fixing lugs, the fixing lugs are provided with magnet threaded holes matched with the elastic sheet threaded holes, the artificial cochlea implant also comprises screws matched with the elastic sheet threaded holes and the magnet threaded holes, and the screws penetrate through the elastic sheet threaded holes and the magnet threaded holes.
The encapsulation silica gel is provided with a glue reducing groove which is positioned at two sides of the lead-out wire.
The implant magnet includes a housing, a core holder, and a core thereof, wherein the housing includes an upper shell and a lower shell, the core holder is disposed in the housing, and the core is disposed in the core holder.
The bottom of the magnetic core support is provided with a central positioning groove, and the lower shell is provided with a central protruding block matched with the central positioning groove.
The magnetic core support is provided with a plurality of spaced strip-shaped grooves, a circular groove is formed in the center of the magnetic core support, the magnetic core comprises a cylindrical magnetic core and a spherical magnetic core, the cylindrical magnetic core is arranged in the strip-shaped grooves, and the spherical magnetic core is arranged in the circular groove.
As a first alternative embodiment, the magnetic core support is provided with a plurality of spaced elongated grooves, a plurality of circular grooves are arranged in the middle, the magnetic core comprises a cylindrical magnetic core and a spherical magnetic core, the cylindrical magnetic core is arranged in the elongated grooves, and the spherical magnetic core is arranged in the circular grooves.
As a second alternative embodiment, the magnetic core support is provided with a plurality of spaced elongated grooves, two circular grooves are provided on both sides, the magnetic core comprises a cylindrical magnetic core and a spherical magnetic core, the cylindrical magnetic core is disposed in the elongated grooves, and the spherical magnetic core is disposed in the circular grooves.
As a third alternative embodiment, the magnetic core support is provided with a plurality of elongated grooves, wherein two elongated grooves are located at two sides, the other elongated grooves are arranged in a row and perpendicular to the elongated grooves at two sides, and the magnetic core comprises a cylindrical magnetic core, and the cylindrical magnetic core is arranged in the elongated grooves.
As a fourth alternative embodiment, the magnetic core support is provided with a plurality of elongated grooves along the circumferential direction, a pie-shaped circular groove is arranged in the center, the magnetic core comprises a cylindrical magnetic core and a pie-shaped circular magnetic core, the cylindrical magnetic core is arranged in the elongated grooves, and the pie-shaped circular magnetic core is arranged in the pie-shaped circular groove.
As a fifth alternative embodiment, the magnetic core support is provided with a plurality of elongated grooves along the circumferential direction, the center of the magnetic core support is provided with a plurality of circular grooves which are symmetrically distributed, the magnetic core comprises a cylindrical magnetic core and a spherical magnetic core, the cylindrical magnetic core is arranged in the elongated grooves, and the spherical magnetic core is arranged in the circular grooves.
According to the artificial cochlea implant, the coil elastic sheets are arranged, so that the implanted magnet is firmly fixed on the inner side of the receiving coil, displacement cannot occur, the receiving coil and the outer coil have good positioning accuracy, and meanwhile, the structural strength of the receiving coil area is improved, so that the artificial cochlea implant has good shock resistance.
The conception and technical effects of the present invention will be further described with reference to the accompanying drawings to fully understand the objects, features and effects of the present invention.
Drawings
Fig. 1 is a schematic view of a cochlear implant of the present invention.
Fig. 2 is a schematic view of a coil spring.
Fig. 3 is a schematic view of an implanted magnet.
Fig. 4 is a cross-sectional view of an implant magnet.
Fig. 5 is a schematic diagram of a core layout.
Fig. 6 is a schematic diagram of a first alternative of a core arrangement.
Fig. 7 is a schematic diagram of a second alternative of a core layout.
Fig. 8 is a schematic diagram of a third alternative core arrangement.
Fig. 9 is a schematic diagram of a fourth alternative core arrangement.
Fig. 10 is a schematic diagram of a fifth alternative core arrangement.
Detailed Description
The present invention is further described below.
As shown in fig. 1, the invention provides an artificial cochlea implant, which comprises an implanted electrode 1, a decoder 2, a receiving coil 3, a coil spring 4, an implanted magnet 5 and encapsulation silica gel 6 thereof, wherein the implanted electrode 1, the decoder 2 and the receiving coil 3 are sequentially connected, the receiving coil 3 is provided with a lead-out wire 31, the lead-out wire 31 is electrically connected with the decoder 2, the coil spring 4 is fixed at the inner side of the receiving coil 3 and used for buffering external impact force, the impact resistance is improved, meanwhile, the structural strength of the area of the receiving coil 3 can be improved, the implanted magnet 5 is fixed at the inner side of the coil spring 4, and the encapsulation silica gel 6 covers the rest parts except an electrode stimulating end of the implanted electrode 1.
The encapsulation silica gel 6 is provided with a glue reducing groove 61, and the glue reducing groove 61 is positioned at two sides of the lead-out wire 31 to increase the bending performance of the area of the lead-out wire 31.
As shown in fig. 2, the coil spring 4 is made of titanium metal with high biosafety and high structural strength, and is provided with a protruding main protrusion 41, and the main protrusion 41 is close to the lead-out wire 31, so as to improve the structural strength of the area of the lead-out wire 31, prevent distortion, and protect the lead-out wire 31. It is worth reminding that the titanium metal comprises a pure titanium material and a titanium alloy material.
The coil spring 4 is further provided with a plurality of auxiliary protruding parts 42, and the auxiliary protruding parts 42 can further provide enough compression resistance and impact resistance protection for the receiving coil 3, and meanwhile, enough silica gel elastic parts are left to contact with a human body, so that a patient cannot feel that the receiving coil 3 is particularly hard, and the comfort level of the body feeling is improved.
The main protrusion 41 is provided with a main protrusion through hole 411, the auxiliary protrusion 42 is provided with an auxiliary protrusion through hole 421, and the coil spring 4 and the encapsulation silica gel 6 can be better fixed together without displacement through the main protrusion through hole 411 and the auxiliary protrusion through hole 421.
Some or all of the auxiliary protrusions 42 are provided with spring plate threaded holes 422, as shown in fig. 3, the implant magnet 5 is provided with fixing lugs 51, the fixing lugs 51 are provided with magnet threaded holes 511 matched with the spring plate threaded holes 422, the cochlear implant further comprises screws 7 matched with the spring plate threaded holes 422 and the magnet threaded holes 511, and the screws 7 penetrate through the spring plate threaded holes 422 and the magnet threaded holes 511, so that the implant magnet 5 is locked at the inner side of the coil spring plate 4, and therefore, the implant magnet 5 cannot rotate or deflect due to external action, and meanwhile, replacement of the implant magnet 5 is facilitated. It should be noted that the silica gel coating the implant magnet 5 and the silica gel of other components can be packaged separately, that is, the implant magnet 5 is packaged in advance, and the products are packaged at the end, so that the packaged silica gel 6 is not damaged when the implant magnet 5 is replaced.
The main protrusion 41 is planar to conform to the shape of the area of the lead-out wire 31, and the auxiliary protrusion 42 is curved to conform to the shape of the area of the receiving coil 3, i.e., to conform to the shape of the skull when installed, to better withstand external pressure, providing optimal protection to the area of the receiving coil 3 and the area of the lead-out wire 31.
As shown in fig. 4, the implanted magnet 5 includes a housing 52, a core support 53, and a core 54, wherein the housing 52 includes an upper shell and a lower shell, the upper shell and the lower shell are matched to each other in a stepped staggered structure, and are connected by laser welding, and other components can be in clearance fit, the housing 52 is made of titanium metal, which has no magnetic permeability and does not affect the magnetic attraction of the core 54, the core support 53 is disposed in the housing 52, is made of titanium metal, is manufactured by powder metallurgy injection molding, and can also be made of resin non-metallic materials, but has strength and material life slightly lower than titanium, the core 54 is disposed in the core support 53, and is made of rare earth materials, such as samarium cobalt and neodymium iron boron, and the inner surface of the housing 52, the surface of the core support 53, and the surface of the core 54 are coated with a high polymer material with lubricity, such as PTFE, parylene. It should be noted that if the core 54 is large, the upper case may be convex at the center but not higher than the surface of the receiving coil 3.
The bottom of the magnetic core support 53 is provided with a central positioning groove, the lower shell is provided with a central protruding block 521 matched with the central positioning groove so as to position the magnetic core support 53 and ensure that the magnetic core support 53 is positioned at a central position, meanwhile, the central protruding block 521 can serve as a fulcrum of the magnetic core support 53, so that the magnetic core support 53 can rotate in the shell 52, and when an external magnetic field changes, the magnetic core 54 and the magnetic core support 52 can rotate to conform to the external magnetic field changes, and deflection torque is reduced or even offset.
As shown in fig. 5, the magnetic core support 53 is provided with a plurality of spaced elongated grooves, a circular groove is provided in the center, the magnetic core 54 includes a cylindrical magnetic core 541 and a spherical magnetic core 542, the cylindrical magnetic core 541 is disposed in the elongated grooves, the spherical magnetic core 542 is radially magnetized, the spherical magnetic core 542 is disposed in the circular groove, positioning accuracy with the transmitting coil of the external sound processor can be improved, and a plurality of magnetic cores can be distributed to disperse external impact force, and the magnetic core support 53 can improve shock resistance.
As a first alternative embodiment, as shown in fig. 6, the core holder 53 is provided with a plurality of spaced elongated grooves, a plurality of circular grooves are provided in the middle, the core 54 includes a cylindrical core 541 and a spherical core 542, the cylindrical core 541 is disposed in the elongated grooves, and the spherical core 542 is disposed in the circular grooves.
As a second alternative embodiment, as shown in fig. 7, the magnetic core support 53 is provided with a plurality of spaced elongated grooves, two circular grooves are provided on two sides, the magnetic core 54 includes a cylindrical magnetic core 541 and a spherical magnetic core 542, the cylindrical magnetic core 541 is disposed in the elongated groove, the spherical magnetic core 542 is disposed in the circular groove, and the spherical magnetic cores 542 on two sides can perform a deviation rectifying action on the adjusting magnet of the external sound processor.
As a third alternative embodiment, as shown in fig. 8, the magnetic core support 53 is provided with a plurality of elongated grooves, wherein two elongated grooves are located at two sides, and the other elongated grooves are arranged in a row and perpendicular to the elongated grooves at two sides, the magnetic core 54 includes a cylindrical magnetic core 541, the cylindrical magnetic core 541 is disposed in the elongated grooves, and the cylindrical magnetic cores 541 at two sides can perform a deviation rectifying action on the adjusting magnet of the external sound processor.
As a fourth alternative embodiment, as shown in fig. 9, the magnetic core support 53 is provided with a plurality of elongated grooves along the circumferential direction, a pie-shaped circular groove is provided in the center, the magnetic core 54 includes a cylindrical magnetic core 541 and a pie-shaped circular magnetic core 543, the cylindrical magnetic core 541 is disposed in the elongated groove, the pie-shaped circular magnetic core 543 is disposed in the pie-shaped circular groove, and the pie-shaped circular magnetic core 543 can improve the center positioning accuracy of the transmitting coil of the external sound processor.
As a fifth alternative embodiment, as shown in fig. 10, the core support 53 is provided with a plurality of elongated grooves along the circumferential direction, and a plurality of circular grooves symmetrically arranged in the center, and the core 54 includes a cylindrical core 541 and a spherical core 542, wherein the cylindrical core 541 is disposed in the elongated grooves, and the spherical core 542 is disposed in the circular grooves.
The foregoing describes in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be made in accordance with the concepts of the invention by one of ordinary skill in the art without undue burden. Therefore, all technical solutions which can be obtained by logic analysis, reasoning or limited experiments based on the prior art by the person skilled in the art according to the inventive concept shall be within the scope of protection defined by the claims.
Claims (13)
1. An artificial cochlea implant, characterized in that: the artificial cochlea implant comprises an implanted electrode, a decoder, a receiving coil, a coil spring, an implanted magnet and packaging silica gel, wherein the implanted electrode, the decoder and the receiving coil are sequentially connected, the receiving coil is provided with a lead wire, the lead wire is electrically connected with the decoder, the coil spring is fixed on the inner side of the receiving coil, the implanted magnet is fixed on the inner side of the coil spring, the packaging silica gel covers the rest parts except the electrode stimulating end of the implanted electrode, the coil spring is provided with a plurality of auxiliary protruding parts extending outwards along the periphery, part or all of the auxiliary protruding parts are provided with spring threaded holes, the implanted magnet is provided with fixing lugs, the fixing lugs are provided with magnet threaded holes matched with the spring threaded holes, and the artificial cochlea implant also comprises screws matched with the spring threaded holes and the magnet threaded holes, and the screws penetrate through the spring threaded holes and the magnet threaded holes.
2. The cochlear implant of claim 1, wherein: the coil spring is provided with a protruding main protruding part, and the main protruding part is close to the lead-out wire.
3. The cochlear implant of claim 2, wherein: the main protruding part is a plane, and the auxiliary protruding part is a cambered surface.
4. The cochlear implant of claim 2, wherein: the main protrusion is provided with a main protrusion through hole, and the auxiliary protrusion is provided with an auxiliary protrusion through hole.
5. The cochlear implant of claim 1, wherein: the encapsulation silica gel is provided with a glue reducing groove which is positioned at two sides of the lead-out wire.
6. The cochlear implant of claim 1, wherein: the implant magnet includes a housing, a core holder, and a core thereof, wherein the housing includes an upper shell and a lower shell, the core holder is disposed in the housing, and the core is disposed in the core holder.
7. The cochlear implant of claim 6, wherein: the bottom of the magnetic core support is provided with a central positioning groove, and the lower shell is provided with a central protruding block matched with the central positioning groove.
8. The cochlear implant of claim 6, wherein: the magnetic core support is provided with a plurality of spaced strip-shaped grooves, a circular groove is formed in the center of the magnetic core support, the magnetic core comprises a cylindrical magnetic core and a spherical magnetic core, the cylindrical magnetic core is arranged in the strip-shaped grooves, and the spherical magnetic core is arranged in the circular groove.
9. The cochlear implant of claim 6, wherein: the magnetic core support is provided with a plurality of spaced strip-shaped grooves, a plurality of round grooves are formed in the middle of the magnetic core support, the magnetic core comprises a cylindrical magnetic core and a spherical magnetic core, the cylindrical magnetic core is arranged in the strip-shaped grooves, and the spherical magnetic core is arranged in the round grooves.
10. The cochlear implant of claim 6, wherein: the magnetic core support is provided with a plurality of spaced strip-shaped grooves, two sides of the magnetic core support are provided with two circular grooves, the magnetic core comprises a cylindrical magnetic core and a spherical magnetic core, the cylindrical magnetic core is arranged in the strip-shaped grooves, and the spherical magnetic core is arranged in the circular grooves.
11. The cochlear implant of claim 6, wherein: the magnetic core support is provided with a plurality of strip-shaped grooves, wherein two strip-shaped grooves are positioned at two sides, the rest strip-shaped grooves are arranged in a row and are perpendicular to the strip-shaped grooves at two sides, the magnetic core comprises a cylindrical magnetic core, and the cylindrical magnetic core is arranged in the strip-shaped grooves.
12. The cochlear implant of claim 6, wherein: the magnetic core support is provided with a plurality of strip-shaped grooves along the circumferential direction, the center of the magnetic core support is provided with a cake-shaped circular groove, the magnetic core comprises a cylindrical magnetic core and a cake-shaped circular magnetic core, the cylindrical magnetic core is arranged in the strip-shaped groove, and the cake-shaped circular magnetic core is arranged in the cake-shaped circular groove.
13. The cochlear implant of claim 6, wherein: the magnetic core support is provided with a plurality of strip-shaped grooves along the circumferential direction, the center of the magnetic core support is provided with a plurality of circular grooves which are symmetrically distributed, the magnetic core comprises a cylindrical magnetic core and a spherical magnetic core, the cylindrical magnetic core is arranged in the strip-shaped grooves, and the spherical magnetic core is arranged in the circular grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010046322.5A CN111135459B (en) | 2020-01-16 | 2020-01-16 | Artificial cochlea implant |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010046322.5A CN111135459B (en) | 2020-01-16 | 2020-01-16 | Artificial cochlea implant |
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| CN111135459A CN111135459A (en) | 2020-05-12 |
| CN111135459B true CN111135459B (en) | 2023-06-20 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112870551A (en) * | 2021-01-15 | 2021-06-01 | 上海力声特医学科技有限公司 | Artificial cochlea implant |
| CN113499540A (en) * | 2021-07-07 | 2021-10-15 | 上海力声特医学科技有限公司 | Artificial cochlea outer machine |
| CN114632262B (en) * | 2022-03-25 | 2023-08-08 | 江西旺来科技有限公司 | Plastic general cochlea |
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| CN108245776A (en) * | 2017-12-28 | 2018-07-06 | 佛山市第人民医院 | A kind of novel artificial cochlea electrode |
| CN108815699A (en) * | 2018-04-16 | 2018-11-16 | 浙江诺尔康神经电子科技股份有限公司 | Improve the artificial cochlear implant of coil |
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