A cochlear implant

Abstract

The application provides a cochlear implant, which comprises an implanted electrode, a decoder, a receiving coil, an implanted magnet, an auxiliary coil, an elastic buckle and encapsulating silica gel; the implanted electrode, the decoder and the receiving coil are connected in series in sequence, the receiving coil covers the auxiliary coil, the implanted magnet is installed inside the auxiliary coil, the encapsulating silica gel is wrapped outside the implanted magnet 11, and the elastic buckle holds the implanted magnet in the cochlear implant; the auxiliary coil is provided with a via hole, a stop edge one and a stop edge two; the elastic buckle comprises a buckle encapsulating silica gel and a clamping jaw; the clamping jaw is provided with a stopper, a limit and a supporting leg, and the limit is arranged on the inner side of the supporting leg; the stopper holds the stop edge, and the stopper abuts against the flange side edge. The application has good biological safety and good mechanical strength, the receiving coil is provided with the auxiliary coil, the implanted magnet is rotationally held on the auxiliary coil and is provided with the elastic buckle, the impact resistance of the implanted magnet is improved, the application has the anti-disengagement function, and the firmness and reliability of the implant are ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of biomedical engineering, in particular, to a long-term implantable cochlear implant, and more particularly to a cochlear implant. BACKGROUND

[0002] The cochlear implant system mainly consists of two parts: an implant in the body and a sound processor outside the body. The sound processor collects sound signals through a microphone and converts the sound signals into electrical signals, which are then transmitted to the receiving coil of the implant in the body by a transmitting coil. The receiving coil transmits the received electrical signals to the decoder part of the implant. The decoder decodes the electrical signals and converts them into corresponding electrical pulse signals. The electrical pulse signals stimulate the ganglion cells in the cochlea through the implanted electrodes of the implant, causing the auditory nerve to be excited and transmit sound information to the brain, resulting in hearing.

[0003] The signal transmission between the sound processor outside the body and the implant in the body of the cochlear implant system is completed by electromagnetic induction, and there is no wire connection between them. In the whole cochlear implant system, the implant is the most critical part, which needs to work safely and reliably in the human body for a long time. The sound processor outside the body can only achieve hearing recovery through it. The receiving coil part of the implant is a very important component, and the electrical signal and energy transmission are realized through the receiving coil. The reliability of the receiving coil and the precise positioning between the implant and the transmitting coil of the sound processor directly affect the safety and effectiveness of the cochlear implant system.

[0004] The receiving coil of the implant in the existing cochlear implant system is usually packaged and coated with silicone. Compared with other materials, silicone has good softness, good biological safety, and good patient comfort. However, the disadvantage is that the strength of silicone is low, and it lacks effective and safe protection for the receiving coil.

[0005] In the current cochlear implant system, the internal and external devices need to use the magnetic pole attraction force of the magnet for positioning in order to interact information and transmit energy between the internal and external devices. The conventional installation and fixation methods of the implant magnet mechanism mainly have two kinds. One method is to directly package a round pie-shaped implant magnet in silicone, and the silicone is provided with an opening for replacing the implant magnet. The disadvantage is that when the implant magnet is subjected to a large external magnetic field, the implant magnet is prone to displacement or even dislocation, causing harm to the patient. The second method is to use threads or buckles to spin and fix the implant magnet. The disadvantage is also that when the implant magnet is subjected to a large external magnetic field, the implant magnet is prone to rotation or even dislocation.

[0006] The artificial cochlea system, due to the magnet implant displacement caused by the above reasons, in addition to affecting the coupling work effect with the external artificial cochlea device, the magnet implant displacement also pulls the human muscle tissue, making the patient feel pain and discomfort, and in severe cases, a local cavity can be generated in the artificial cochlea implant body, causing the accumulation of body fluid, and further causing local infection, and even causing the artificial cochlea implant to fall out, reducing the biological safety and reliability of the implant.

[0007] Therefore, there is an urgent need for an implant magnet fixing mechanism with excellent holding capacity, a transmitting coil part with strong impact resistance, and an implant with high biological safety and reliability. SUMMARY

[0008] In view of this, the purpose of the present application is to provide an artificial cochlea implant, the receiving coil part has high biological safety and mechanical reliability, and the holding capacity of the implant magnet fixing mechanism is strengthened, so that the implant magnet can be firmly fixed on the implant and will not displace.

[0009] The present application provides an artificial cochlea implant, comprising: an implant electrode, a decoder, a receiving coil, an implant magnet, an auxiliary coil, an elastic buckle and a packaging silica gel; wherein the implant electrode, the decoder and the receiving coil are electrically connected in series, the receiving coil covers the auxiliary coil, the implant magnet is installed in the auxiliary coil, the packaging silica gel is wrapped outside the implant magnet, and the elastic buckle holds the implant magnet in the overall structure of the cochlea implant;

[0010] The implant magnet comprises: an upper shell, a lower shell, a magnetic core and a flange, the magnetic core is sealingly arranged in the interiors of the upper shell and the lower shell, and the flange is symmetrically arranged on the interiors of the upper shell and the lower shell, and the interiors of the upper shell and the lower shell are coated with a coating material;

[0011] The auxiliary coil is provided with a via hole, and the auxiliary coil is provided with a stop edge one, a stop edge two, a stop position and an observation port along the circumferential direction of the inner circle; the elastic buckle comprises a buckle packaging silica gel and a jaw, and the jaw is arranged outside the buckle packaging silica gel; wherein the jaw is provided with a stop buckle, a limit and a supporting leg, the limit is arranged on the inner side of the supporting leg, the stop buckle holds the stop edge, and the stop buckle abuts against the side edge of the flange;

[0012] The packaging silica gel penetrates through the via hole to enhance the positioning reliability of the auxiliary coil and prevent the displacement of the auxiliary coil; the auxiliary coil forms an entrance and a stop position of the packaging silica gel after being sealed in the packaging silica gel.

[0013] Further, the auxiliary coil and the packaging silica gel are matched in the form of an arc.

[0014] Further, the hardness of the clasp sealing silica gel is less than that of the sealing silica gel, so as to facilitate the deformation of the clasp.

[0015] Further, the side of the stopper is provided with a stopper side, the side of the stopper is provided with a stopper side, and the stopper side and the stopper side are in abutment with each other.

[0016] Further, the number of the stopper is set to 4, which can effectively fix the elastic clasp and the implanted magnet, the inner diameter of the stopper matches the outer diameter of the implanted magnet, and the cooperation gap is less than or equal to 0.05 mm.

[0017] Further, the upper shell and the lower shell are sealingly and fixedly connected, forming a sealing structure, and the magnetic core comprises: a ceramic part one, a ceramic part two and a magnetic material; the magnetic material is arranged inside the ceramic part one and the ceramic part two.

[0018] Further, the ceramic part one comprises: a ceramic shell one, a titanium flange one, a magnetic guide sheet and a brazing material one, the titanium flange one is fixedly connected with the ceramic shell one through the brazing material one, the titanium flange one is provided with a chamfer one, the magnetic guide sheet is arranged on the inner bottom side of the ceramic shell one, and the material of the magnetic guide sheet is selected to be a material with magnetic conductivity such as iron and iron-based alloy; the ceramic part two comprises: a ceramic shell two, a titanium flange two and a brazing material two, the titanium flange two is fixedly connected with the ceramic shell two through the brazing material two, and the titanium flange two is provided with a chamfer two; the titanium flange one and the titanium flange two are laser-welded at the chamfer one and the chamfer two; and the chamfer ensures that the welding seam does not protrude above the surface of the magnetic core.

[0019] The magnetic material can be axially magnetized or radially magnetized.

[0020] The assembly process of the magnetic core is as follows:

[0021] The ceramic shell one is surface metallized, and then the titanium flange one and the magnetic guide sheet are welded with the ceramic shell one through the brazing material to form the ceramic part;

[0022] The ceramic shell two is surface metallized, and then the titanium flange two is welded with the ceramic shell two through the brazing material to form the ceramic part two;

[0023] The magnetic material is adsorbed on the magnetic guide sheet of the ceramic part.

[0024] The titanium flange one and the titanium flange two are laser-welded together to form the magnetic core. Both the titanium flanges (the titanium flange one and the titanium flange two) have chamfers, which can ensure that the welding seam does not protrude above the surface of the magnetic core.

[0025] The magnetic core is polished to remove surface metal oxides, and is ground to obtain a higher smoothness, so as to reduce the friction with the upper shell and the lower shell.

[0026] The inner side of the shell and the inner side of the shell are coated with wear-resistant high-lubricity coating materials, including PTFE, ceramics, etc.

[0027] The magnetic core is placed in the shell lower, and the shell upper is covered, and the magnetic core is sealed in the metal shell of the shell lower and the shell upper by laser welding; the magnetic core can obtain accurate size through grinding, the shell lower adopts precision machining, and the gap between the magnetic core and the shell lower is preferably 0.01-0.03 mm.

[0028] Further, the included angle of the single flange is ≤84 degrees.

[0029] Further, the material of the auxiliary ring is a biocompatible metal material, including titanium, titanium alloy and MP35N alloy.

[0030] Further, the material of the elastic buckle is a biocompatible metal material, including titanium, titanium alloy and MP35N alloy.

[0031] The present application has the following advantages:

[0032] 1. The fixation of the implanted magnet is more firm, especially the radial and axial fixation strength is high, even if subjected to an external strong magnetic field, the implanted magnet is not easy to displace and fall out.

[0033] 2. The elastic buckle is pre-packaged with silica gel, which can completely fill the empty parts of the receiving coil and will not cause local cavities to avoid postoperative infection.

[0034] 3. The elastic buckle and the auxiliary ring can effectively disperse the impact on the implanted magnet part, and improve the impact resistance of the implanted magnet.

[0035] 4. The auxiliary ring is located between the implanted magnet and the receiving coil, which can greatly improve the protection ability of the receiving coil.

[0036] 5. The magnetic material is adsorbed on the magnet attracting sheet, and the magnetic material can move together with the ceramic part to avoid the movement wear of the magnetic material.

[0037] 6. The magnetic core is ground, the surface friction coefficient is low, the inner side of the shell upper and the shell lower is coated with a lubricating material, which greatly reduces the friction loss between the magnetic core and the shell upper and the shell lower.

[0038] Compared with the prior art, the present application has the following advantages:

[0039] The artificial cochlea implant of the present application has good biological safety and good mechanical strength, the receiving coil part is provided with an auxiliary ring, the implanted magnet is rotatably held on the auxiliary ring, and the elastic buckle is configured, the impact resistance of the implanted magnet is improved, the implanted magnet has the anti-falling-out function, and the firmness and reliability and the biological safety of the implanted body are ensured. BRIEF DESCRIPTION OF DRAWINGS

[0040] Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The detailed description is made with reference to the accompanying drawings.

[0041] In the drawings:

[0042] Figure 1 A schematic diagram of the overall structure of a cochlear implant according to the present application

[0043] Figure 2 A schematic diagram of the structure of a supplemental ring according to an embodiment of the present application

[0044] Figure 3 A schematic diagram of the structure of a silicone encapsulation according to an embodiment of the present application

[0045] Figure 4 A schematic diagram of the structure of an implanted magnet according to an embodiment of the present application

[0046] Figure 5 An exploded view of the structure of a magnetic core according to an embodiment of the present application

[0047] Figure 6 A schematic diagram of the structure of a magnetic core according to an embodiment of the present application

[0048] Figure 7 A schematic diagram of the structure of an implanted magnet according to an embodiment of the present application

[0049] Figure 8 A schematic diagram of the structure of a resilient clip according to an embodiment of the present application

[0050] Figure 9 A schematic diagram of the structure of a pawl according to an embodiment of the present application

[0051] Figure 10 An exploded schematic diagram of the assembly of components of an implanted magnet according to an embodiment of the present application

[0052] Figure 11 A schematic diagram of the assembly of components of an implanted magnet according to an embodiment of the present application

[0053] Figure 12 A cross-sectional schematic diagram of the assembly of components of an implanted magnet according to an embodiment of the present application

[0054] Figure 13 A schematic diagram of the assembly of components of a resilient clip according to an embodiment of the present application

[0055] Figure 14 A schematic diagram of the assembly of components of a resilient clip according to an embodiment of the present application, in three cross-sectional views A, B and C.

[0056] Marked in the drawing:

[0057] 11, implanted magnet, 12, auxiliary ring, 13, elastic buckle, 14, implanted electrode, 15, decoder, 16, receiving coil, 17, encapsulated silicone, 111, upper shell, 112, lower shell, 113, magnetic core, 1131, ceramic part one, 1132, ceramic part two, 1133, magnetic material, 11311, ceramic shell one, 11312, titanium flange one, 11313, magnetic sheet, 11314, solder one, 113121, chamfer one, 11321, ceramic shell two, 11322, titanium flange two, 11323, solder two, 113221, chamfer two, 114, flange, 115, coating material, 121, via hole, 122, stop edge one, 123, stop edge two, 1231, stop edge side, 124, blocking position, 125, observation port, 131, buckle encapsulated silicone, 132, clamping jaw, 1321, clamping jaw stop, 13211, clamping jaw stop side, 1322, limit, 1323, support leg, 172, inlet, 173, stop. DETAILED DESCRIPTION

[0058] The exemplary embodiments will be described in detail herein with reference to the attached drawings. The description of the exemplary embodiments is intended to apply to various alternative embodiments as well. It is to be understood that the description of any exemplary embodiment is intended only to be used to assist in understanding the exemplary embodiments and is not intended to limit the scope of the exemplary embodiments. Rather, the scope of the exemplary embodiments is limited only by the claims.

[0059] The terminology used in the disclosure presented herein is for the purpose of describing particular embodiments only and is not intended to be limiting, unless otherwise defined by context. As used in the description of the embodiments and the appended claims, the singular forms "a," "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

[0060] It will be understood that, although the terms first, second, third, etc. can be used herein to describe various information, these terms are not intended to denote a temporal or chronological order. Rather, these terms are used only as a shorthand notation to distinguish one piece of information from another. For example, a first piece of information can also be termed a second piece of information, and similarly, a second piece of information can also be termed a first piece of information without departing from the scope of the present disclosure. Depending on the context, the word "if' as used herein can be interpreted to mean "when" or "in response to determining" or "in response to a determination."

[0061] The embodiments of the present application will be further described in detail with reference to the drawings.

[0062] This invention provides a cochlear implant, see [link to relevant documentation]. Figure 1 As shown, the cochlear implant includes: an implanted electrode 14, a decoder 15, a receiving coil 16, an implanted magnet 11, an auxiliary ring 12, an elastic clip 13, and encapsulating silicone 17; wherein, the implanted electrode 14, the decoder 15, and the receiving coil 16 are connected in series, the receiving coil 16 covers the auxiliary ring 12, the implanted magnet 11 is screwed into the auxiliary ring 12, the encapsulating silicone 17 covers the outside of the implanted magnet 11, and the elastic clip 13 secures the implanted magnet 11 within the overall structure of the cochlear implant.

[0063] See Figure 4 As shown, the implanted magnet 11 includes: an upper outer shell 111, a lower outer shell 112, a magnetic core 113, and a flange 114. The magnetic core 113 is sealed inside the upper outer shell 111 and the lower outer shell 112. The flange 114 is symmetrically arranged on the lower outer shell 112. The interior of the upper outer shell 111 and the lower outer shell 112 is coated with a coating material 115.

[0064] See Figure 2 As shown, the auxiliary ring 12 is provided with a through hole 121, and the auxiliary ring 12 is provided with a first stop edge 122, a second stop edge 123, a stop 124, and an observation port 125 along the inner circumference direction; see also Figure 8 , 9 As shown, the elastic buckle 13 includes: a buckle-encapsulating silicone 131 and a claw 132, the claw 132 being disposed outside the buckle-encapsulating silicone 131; wherein, the claw 132 is provided with a stop 1321, a limit 1322, and a support foot 1323, the limit 1322 being disposed inside the support foot 1323; the stop 1321 fastens the stop edge 123, and the stop 1321 abuts against the side of the flange 114;

[0065] See Figure 3 As shown, the encapsulating silicone 17 penetrates the through hole 121 to enhance the positioning reliability of the auxiliary ring 12 and prevent the auxiliary ring 12 from shifting; after the encapsulating silicone 17 is sealed in, the auxiliary ring 12 forms the entrance 172 and the stop 173 of the encapsulating silicone 17.

[0066] The auxiliary ring 12 and the encapsulating silicone 17 are matched in shape with an arc.

[0067] To facilitate the deformation of the claw 132, the hardness of the snap-fit ​​encapsulating silicone 131 is less than that of the encapsulating silicone 17.

[0068] The side of the stop buckle 1321 is provided with a stop buckle side 13211, the side of the stop edge 123 is provided with a stop edge side 1231, and the stop buckle side 13211 and the stop edge side 1231 abut each other.

[0069] The number of the stop buckle 1321 is 4, which can effectively fix the elastic buckle 13 and the implanted magnet 11, the inner diameter of the stop 1322 matches the outer diameter of the implanted magnet 11, and the cooperation gap is less than or equal to 0.05 mm.

[0070] The upper shell 111 and the lower shell 112 are sealingly and fixedly connected, forming a sealing structure, as shown in FIG. Figure 5 、 6 、7, the magnetic core 113 comprises ceramic part one 1131, ceramic part two 1132 and magnetic material 1133; the magnetic material 1133 is arranged inside the ceramic part one 1131 and the ceramic part two 1132.

[0071] The ceramic part one 1131 comprises a ceramic shell one 11311, a titanium flange one 11312, a magnetic sheet 11313 and a brazing material one 11314; the titanium flange one 11312 is fixedly connected with the ceramic shell one 11311 through the brazing material one 11314, and the titanium flange one 11312 is provided with a chamfer one 113121; the magnetic sheet 11313 is arranged at the bottom side inside the ceramic shell one 11311, and the material of the magnetic sheet 11313 is selected to be a material with magnetic conductivity, such as iron or iron-based alloy; the ceramic part two 1132 comprises a ceramic shell two 11321, a titanium flange two 11322 and a brazing material two 11323; the titanium flange two 11322 is fixedly connected with the ceramic shell two 11321 through the brazing material two 11323, and the titanium flange two 11322 is provided with a chamfer two 113221; the titanium flange one 11312 and the titanium flange two 11322 are laser welded at the chamfer one 113121 and the chamfer two 113221; the chamfer ensures that the welding seam does not protrude above the surface of the magnetic core 113;

[0072] The magnetic material 1133 can be selected to be axially magnetized or radially magnetized.

[0073] The assembly process of the magnetic core 113 of the application is as follows:

[0074] The ceramic shell one 11311 is surface metallized, and then the titanium flange one 11312 and the magnetic sheet 11313 are welded with the ceramic shell one 11311 through brazing material to form the ceramic part one 1131;

[0075] The ceramic shell two 11321 is surface metallized, and then the titanium flange two 11322 is welded with the ceramic shell two 11321 through brazing material to form the ceramic part two 1132.

[0076] The magnetic material 1133 is adsorbed onto the magnetic sheet 11313 of the ceramic component 1131.

[0077] Titanium flange 11312 and titanium flange 11322 are welded together by laser welding to form magnetic core 113. Both titanium flanges (titanium flange 11312 and titanium flange 11322) have chamfers to ensure that the weld seam does not protrude above the surface of magnetic core 113.

[0078] The magnetic core 113 is polished to remove surface metal oxides and ground to obtain a high degree of smoothness, so as to reduce friction with the upper shell 111 and the lower shell 112.

[0079] The inner sides of the upper shell 111 and the lower shell 112 are coated with a wear-resistant and highly lubricating coating material 115, including PTFE, ceramics, etc.

[0080] The magnetic core 113 is placed in the lower shell 112 and the upper shell 111 is covered. The magnetic core 113 is sealed in the metal shell of the lower shell 112 and the upper shell 111 by laser welding. The magnetic core 113 can be obtained with precise dimensions by grinding. The lower shell 112 is precision machined. The fit clearance between the magnetic core 113 and the lower shell 112 is preferably 0.01 to 0.03 mm.

[0081] In this embodiment, the included angle of a single flange 114 is ≤84 degrees.

[0082] The auxiliary ring 12 is made of a biocompatible metallic material, including titanium, titanium alloy, and MP35N alloy.

[0083] The elastic buckle 13 is made of a biocompatible metallic material, including titanium, titanium alloy, and MP35N alloy.

[0084] The specific assembly process of the cochlear implant in this embodiment is as follows:

[0085] 1. See Figure 10 , 11 As shown, the implanted magnet 11 is inserted into the inlet 172 of the encapsulated silicone 17 and rotated clockwise until the flange 114 of the implanted magnet 11 abuts against the stop 124 of the auxiliary ring 12. The observation port 125 can be used to determine whether the implanted magnet 11 has been rotated into place. At this time, the stop edge 122 of the auxiliary ring 12 completely locks the biological flange 114 of the implanted magnet 11, preventing it from falling out and ensuring the axial positioning of the implanted magnet 11.

[0086] 2. Insert the elastic buckle 13 into the inlet 172 of the encapsulating silicone 17, see [reference]. Figure 9 , 12As shown, the elastic buckle 13 is pressed down to be deformed, the stopper 1321 of the clamping jaw 132 buckles the stop edge 123 of the auxiliary ring 12, the side edge 13211 of the stopper 1321 abuts against the side edge 1231 of the stop edge 123, and therefore the clamping jaw 132 and the elastic buckle 13 cannot rotate. Meanwhile, the stopper 1321 also abuts against the flange 114 of the implanted magnet 11 from the side edge, preventing the implanted magnet 11 from rotating out, and ensuring the radial positioning of the implanted magnet 11. Referring to Figure 13 、 14 As shown, four stoppers 1321 are arranged in the embodiment, which can effectively fix the elastic buckle 13 and the implanted magnet 11. The inner diameter of the limit 1322 of the elastic buckle 13 matches the outer diameter of the implanted magnet 11, the gap is controlled to be less than or equal to 0.05 mm, which can effectively prevent the radial displacement of the elastic buckle 13 and avoid the elastic buckle 13 from being pulled out, resulting in fixation failure. Four limits 1322 are arranged in the embodiment. The supporting leg 1323 of the elastic buckle 13 abuts against the stop edge 122 of the auxiliary ring 12, and the stop edge 123 can buffer and protect the implanted magnet 11 by deforming the encapsulating silica gel 131 between the elastic buckle 13 and the implanted magnet 11 when an external impact is applied, and can also disperse the impact force to the auxiliary ring 12 through the supporting leg 1323 of the elastic buckle 13. The area of the auxiliary ring 12 is large, which can greatly reduce the pressure damage of the impact and improve the impact resistance of the implanted magnet 11. Four supporting legs 1323 are arranged in the embodiment.

[0087] 3, titanium flange one 312, ceramic piece one 311 and magnetic induction sheet 313 are brazed through brazing material one 314 to form inner shell one 31, titanium flange two 322 and ceramic piece two 321 are brazed through brazing material two 323 to form inner shell two 32, titanium flange two 322 is provided with chamfer two 3221, titanium flange one 312 is provided with chamfer one 3121, the material of magnetic induction sheet 313 is selected from materials with magnetic conductivity such as iron and iron-based alloy, brazing material two 323 and brazing material one 314 are selected from materials with biological safety such as gold, platinum and titanium metal, titanium flange one 312 and titanium flange two 322 are preferably titanium and titanium alloy with long-term biological safety.

[0088] The embodiment of the present application has the following advantages:

[0089] 1, the implanted magnet 11 is fixed more firmly, especially the radial and axial fixing strength is high, and even if subjected to an external strong magnetic field, it is not easy to displace and pull out.

[0090] 2, the elastic buckle 13 is pre-encapsulated with silica gel, which can completely fill the hollow parts of the receiving coil 16 and will not cause local cavities to avoid postoperative infection.

[0091] 3, the elastic buckle 13 and the auxiliary ring 12 can effectively disperse the impact on the implanted magnet 11, and improve the impact resistance of the implanted magnet 11.

[0092] 4. The auxiliary coil 12 is located between the implanted magnet 11 and the receiving coil 16, which can greatly improve the protection capability of the receiving coil 16.

[0093] 5. The magnetic material 1133 is adsorbed on the magnet attracting sheet 11313, and the magnetic material 1133 can move together with the ceramic part 1131, avoiding the movement wear of the magnetic material 1133.

[0094] 6. The magnetic core 113 is ground, the surface friction coefficient is low, the inside of the upper shell 111 and the lower shell 112 is coated with lubricating material, which greatly reduces the friction loss between the magnetic core 113 and the upper shell 111 and the lower shell 112.

[0095] The cochlear implant of the embodiment has good biological safety and good mechanical strength, the receiving coil part is provided with an auxiliary coil, the implanted magnet is rotatably held on the auxiliary coil, and the elastic buckle is configured, so that the impact resistance of the implanted magnet is improved, the implanted magnet has the anti-falling function, and the firmness, reliability and biological safety of the implant are ensured.

[0096] Thus, the technical scheme of the present application has been described in combination with the preferred embodiments shown in the drawings, but it is easy for those skilled in the art to understand that the protection scope of the present application is obviously not limited to these specific embodiments. Those skilled in the art can make equivalent changes or replacements to the related technical features without departing from the principles of the present application, and the technical scheme after the changes or replacements will fall within the protection scope of the present application.

[0097] The above description is only the preferred embodiments of the present application and is not used to limit the present application; for those skilled in the art, the present application can have various changes and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A cochlear implant, characterized by The utility model relates to a cochlear implant structure, including: The implant electrode, decoder, receiving coil are connected in series in proper order, the receiving coil covers the auxiliary ring, the implant magnet is screwed into the inside of the auxiliary ring, the encapsulation silica gel is wrapped outside the implant magnet, the elastic buckle holds the implant magnet in the overall structure of the cochlear implant; The implant magnet includes: shell top, shell bottom, magnetic core, flange, the magnetic core is sealed in the inside of the shell top and shell bottom, the flange is symmetrically arranged on the shell bottom, the inside of the shell top and shell bottom is coated with coating material; The auxiliary ring is provided with a via hole, and the auxiliary ring is provided with a stop edge one, a stop edge two, a gear position and an observation port along the circumferential direction of the inner ring; the elastic buckle includes a buckle encapsulation silica gel and a jaw, and the jaw is arranged outside the buckle encapsulation silica gel; wherein the jaw is provided with a stop buckle, a limit and a supporting leg, the limit is arranged on the inner side of the supporting leg; the stop buckle buckles the stop edge, and the stop buckle abuts against the side edge of the flange; The encapsulation silica gel penetrates the via hole to prevent the auxiliary ring from moving; the auxiliary ring forms an encapsulation silica gel inlet and a stop position after being encapsulated in the encapsulation silica gel; The side edge of the stop buckle is provided with a stop buckle side edge, the side edge of the stop edge two is provided with a stop edge side edge, and the stop buckle side edge and the stop edge side edge abut against each other; The shell top and the shell bottom are fixedly connected in a sealed manner, and the magnetic core includes a ceramic part one, a ceramic part two and a magnetic material; the magnetic material is arranged in the ceramic part one and the ceramic part two; The ceramic part one includes a ceramic shell one, a titanium flange one, a magnetic guide sheet and a brazing material one, the titanium flange one is fixedly connected with the ceramic shell one through the brazing material one, the titanium flange one is provided with a chamfer one, and the magnetic guide sheet is arranged on the inner bottom side of the ceramic shell one; the ceramic part two includes a ceramic shell two, a titanium flange two and a brazing material two, the titanium flange two is fixedly connected with the ceramic shell two through the brazing material two, and the titanium flange two is provided with a chamfer two; the titanium flange one and the titanium flange two are laser welded at the chamfer one and the chamfer two.

2. The cochlear implant of claim 1, wherein, The auxiliary ring and the encapsulation silica gel are matched in an arc type.

3. The cochlear implant of claim 1, wherein, The hardness of the buckle encapsulation silica gel is less than that of the encapsulation silica gel.

4. The cochlear implant of claim 1, wherein, The number of the stop buckles is four, the inner diameter of the limit matches the outer diameter of the implant magnet, and the fitting gap is less than or equal to 0.05 mm.

5. The cochlear implant of claim 1, wherein, The included angle of the single flange is less than or equal to 84 degrees.

6. The cochlear implant of claim 1, wherein, The material of the auxiliary ring is a biocompatible metal material, including titanium, titanium alloy and MP35N alloy.

7. The cochlear implant of claim 1, wherein, The material of the elastic buckle is a biocompatible metal material, including titanium, titanium alloy and MP35N alloy.

Images