Cochlear implant device

Abstract

The cochlear implant device provided by the present invention includes a shell, a linear motor, a stepper motor, and a clamping device. A cavity is provided in the shell, and the linear motor is arranged in the cavity. The linear motor drives at least one guide rod to move forward and backward. A guide rod through hole is provided at one end of the shell cavity, and the guide rod extends out from the guide rod through hole; the stepper motor includes a fixed part and a rotor, and the fixed part is installed at one end of the guide rod extending out of the cavity, and can move forward and backward with the guide rod; the rotor rotates around an axis, and the axis is parallel to the movement direction of the guide rod; the clamping device is installed on the rotor and can rotate with the rotor. The present invention is easy to operate, can intelligently and gently complete cochlear implantation in a tiny implantation space, can standardize the cochlear implantation speed, has little damage to the microstructure in the cochlea, and is convenient for protecting the patient's residual hearing.

Description

Technical Field

[0001] The present invention relates to a cochlear implant device, and in particular to a robot-assisted system for artificial cochlear implantation. Background Art

[0002] The cochlear implant is an electronic hearing aid that consists of an external part and an internal part. The internal part includes a receiving coil, a stimulating electrode, a reference electrode, and a processor. The external microphone receives the sound signal, which is digitally encoded by the speech processor and transmitted to the receiving coil implanted in the body. The pulses carrying the corresponding frequency and current are then transmitted to the stimulating electrode, and then transmitted to the auditory center through the auditory nerve for discrimination and processing, thereby producing hearing. As the only treatment for severe hearing loss, cochlear implants are now very popular and have become the most successful biomedical engineering electronic device to date.

[0003] The electrodes must be inserted into the internal part of the cochlear implant through surgery. The traditional implantation method is to implant the electrodes into the cochlea with instruments by hand, which is prone to uneven force, excessive force (implantation too quickly), and skewed force, resulting in damage to the internal structure of the cochlea. In order to reduce damage to the inner ear, the concept of "soft surgery" was proposed, requiring the surgeon to "gently" and "slowly" implant the electrodes deep into the cochlea. However, as a surgical technique to further improve the effect of cochlear implants, the technical standards of "soft surgery" are subject to the interference of the surgeon's subjective factors, resulting in uneven results. Therefore, how to use medical robotics technology to implement precise and minimally invasive "soft surgery" has been a research hotspot in the field of cochlear implants in recent years.

[0004] At present, foreign research on robot-assisted cochlear implantation is only focused on the electrode part of the cochlear implant and is conducted around force feedback. For example, CN201260735Y discloses a cochlear implant device, in which the cochlear-shaped pole array is encapsulated as one with silicone, multiple support segments are provided with through holes, and the support steel core is inserted into the through holes to straighten the cochlear-shaped pole array; CN104622601A discloses a method for implanting a curved electrode of a cochlear implant, in which the guide hose has a tearable structure that runs through the head and tail, and a horn is provided at the tail end to press against the window hole of the temporal bone, and the curved electrode of the cochlear implant is pushed along the guide hose. However, the above research did not consider the influence of the overall structure of the cochlear implant on the electrode clamping, transportation, and force feedback sensitivity, and its experimental results cannot be directly converted and applied. Summary of the invention

[0005] In view of the current problem of lack of effective robot-assisted system for cochlear implant, the present invention provides a cochlear implant (or, also called "cochlear implant electrode") implant device, in particular a cochlear implant device for "soft surgery".

[0006] The cochlear implant device provided by the present invention includes a shell, a linear motor, a stepper motor, and a clamping device. A cavity is provided in the shell, and the linear motor is arranged in the cavity. The linear motor drives at least one guide rod to move forward and backward. A guide rod through hole is provided at one end of the shell cavity, and the guide rod extends out of the guide rod through hole; the stepper motor includes a fixed part and a rotor, and the fixed part is installed at one end of the guide rod extending out of the cavity and can move forward and backward with the guide rod; the rotor rotates around an axis, and the axis is parallel to the movement direction of the guide rod; the clamping device is installed on the rotor and can rotate with the rotor.

[0007] In a preferred embodiment of the present invention, the cochlear implant device may have an independent power supply system or device inside, or the cochlear implant device may be connected to an external power supply system, for example, provided with a power supply system connection terminal, or a plug connected to an external power supply system.

[0008] In a preferred embodiment of the present invention, the stepper motor is provided with an output shaft, and the rotor can drive the output shaft to rotate; more preferably, the clamping device can rotate with the output shaft.

[0009] In a preferred embodiment of the present invention, the housing is provided with a linear motor fixing part, and the linear motor fixing part can be any one or a combination of bolts, screws, screw holes, nuts, snap-fit ​​structures, plug-in structures, welding, and bonding.

[0010] In a preferred embodiment of the present invention, the housing is provided with a linear motor positioning hole, and the guide rod is through-hole placed in the linear motor positioning hole.

[0011] In a preferred embodiment of the present invention, the side wall of the shell is provided with an opening, and an openable cover is provided at the opening.

[0012] In a preferred embodiment of the present invention, a first connecting flange is provided outside the housing, and the stepping motor is mounted on the guide rod via the first connecting flange.

[0013] In a more preferred embodiment of the present invention, a guide rod socket is provided at one end of the first connecting flange, and the guide rod is inserted into the first connecting flange from the guide rod socket and fixed; a stepper motor mounting structure is provided at the other end of the first connecting flange for mounting the stepper motor.

[0014] The stepper motor mounting structure may be any one or a combination of bolts, screws, screw holes, nuts, snap-fit ​​structures, plug-in structures, welding, and bonding.

[0015] In a more preferred embodiment of the present invention, the mounting structure includes a stepper motor placement hole, and more preferably, further includes fixing holes distributed around the stepper motor placement hole.

[0016] In a more preferred embodiment of the present invention, the first connecting flange is provided with a cochlear electrode placement groove extending toward one end of the stepping motor.

[0017] In a more preferred embodiment of the present invention, it further comprises a clamping device connecting flange, the clamping device connecting flange is provided with an output shaft mounting hole, the output shaft of the stepper motor is inserted into the output shaft mounting hole for fixing; the clamping device connecting flange is provided with a clamping device fixing structure, wherein, preferably, the clamping device fixing structure can be any one or a combination of bolts, screws, screw holes, nuts, snap-fit ​​structures, plug-in structures, welding, and bonding. The output shaft can drive the clamping device connecting flange to rotate, thereby driving the clamping device to rotate.

[0018] In a more preferred embodiment of the present invention, the clamping device connecting flange includes a disk and a protruding portion extending outward from a first plane of the disk, the output shaft through hole is located on the disk; and the clamping device fixing structure is located on the protruding portion.

[0019] In a preferred embodiment of the present invention, it also includes an electro-displacement generator (electrostrictive micro-displacer), and the clamping device includes a displacement amplification structure and a cochlear electrode clamping end. The electro-displacement generator can deform after receiving a loading voltage, and the deformation can amplify the displacement through the displacement amplification structure, thereby adjusting the movement of the cochlear electrode clamping end.

[0020] In a more preferred embodiment of the present invention, the displacement amplification mechanism is provided with a clamping device mounting plate, the clamping device mounting plate is provided with mounting holes, and the mounting holes are aligned with the clamping device fixing structure.

[0021] In a more preferred embodiment of the present invention, the displacement amplification structure is a two-stage displacement amplification mechanism. More preferably, the two-stage displacement amplification mechanism includes an input end driven by an electro-displacement generator, the input end is connected to one end of a first-stage displacement amplification lever through a first-stage input flexible hinge, and the other end of the first-stage displacement amplification lever is connected to a first-stage output flexible hinge; one end of the first-stage displacement amplification lever fulcrum hinge is connected to the clamping device mounting plate, and the other end of the first-stage displacement amplification lever fulcrum hinge is connected to the position between the first-stage input flexible hinge and the first-stage output flexible hinge of the first-stage displacement amplification lever; the first-stage output flexible hinge is connected to one end of the second-stage input flexible hinge through a connecting block; the holding device mounting plate is connected to the second-stage displacement amplification lever fulcrum hinge, and the second-stage displacement amplification lever fulcrum hinge and the first-stage displacement amplification lever fulcrum hinge extend in different directions, preferably perpendicular to each other; the second-stage displacement amplification lever fulcrum hinge and the second-stage input flexible hinge are connected to one end of the second-stage displacement amplification lever from different directions, preferably perpendicular to each other, and the other end of the second-stage displacement amplification lever forms the cochlear electrode clamping end.

[0022] In a more preferred embodiment of the present invention, the displacement amplification structure is a symmetrical two-stage displacement amplification mechanism; wherein, a first-stage displacement amplification lever is respectively provided at the left and right ends of the clamping device mounting plate, and is respectively connected to the first-stage displacement amplification lever through the first-stage displacement amplification lever fulcrum hinges on the left and right sides; at least two second-stage displacement amplification lever fulcrum hinges are provided in front of the clamping device mounting plate, and one end of the two second-stage displacement amplification levers is respectively connected to the front of the clamping device mounting plate through the second-stage displacement amplification lever fulcrum hinges; more preferably, the other ends of the two second-stage displacement amplification levers form a clamping end for clamping the cochlear electrode.

[0023] In a more preferred embodiment of the present invention, the connecting flange of the clamping device is provided with a cochlear electrode placement groove extending from the second plane of the disc to the first plane.

[0024] In a more preferred embodiment of the present invention, the primary input flexible hinge, the secondary input flexible hinge, the primary output flexible hinge, the primary displacement amplification lever fulcrum hinge, and the secondary displacement amplification lever fulcrum hinge are each independently preferably a straight beam type flexible hinge.

[0025] In a more preferred embodiment of the present invention, the first-level displacement amplification lever fulcrum hinge, the second-level displacement amplification lever fulcrum hinge and the first-level input flexible hinge, the second-level input flexible hinge, and the first-level output flexible hinge are not in the same plane. More preferably, the first-level displacement amplification lever fulcrum hinge and the second-level displacement amplification lever fulcrum hinge are located in a first plane, and the first-level input flexible hinge, the second-level input flexible hinge, and the first-level output flexible hinge are located in a second plane. The first plane and the second plane are different planes, preferably two upper and lower parallel planes.

[0026] In a more preferred embodiment of the present invention, a second connecting flange is further included; the second connecting flange is arranged between the stepper motor and the clamping device, more preferably, between the connecting flange of the clamping device and the stepper motor. The second connecting flange includes a stepper motor positioning hole, and more preferably, a stepper motor fixing structure distributed around the stepper motor positioning hole. Preferably, the stepper motor fixing structure can be any one or a combination of bolts, screws, screw holes, nuts, snap-fit ​​structures, plug-in structures, welding, and bonding.

[0027] In a preferred embodiment of the present invention, it also includes a front tube of the shell, which is a hollow structure, and the first connecting flange, the stepper motor, and the second connecting flange are preferably independently located in the hollow structure of the front tube of the shell; the surface of the front tube of the shell is provided with a cochlear electrode placement groove extending toward the clamping device.

[0028] In a preferred embodiment of the present invention, the cochlear implant device also includes a guiding device, one end of which is annular, one end of the annular shape is connected to the shell (preferably, connected to the front tube of the shell), and the other end is provided with a guide groove, and the clamping device is located between the end of the guiding device provided with the guide groove and the stepping motor.

[0029] In a more preferred embodiment of the present invention, a cochlear electrode placement groove is provided at one annular end of the guide device.

[0030] In a more preferred embodiment, the cochlear electrode placement slot of the front tube of the shell, the cochlear electrode placement slot at one end of the guide device ring, the cochlear electrode placement slot of the second connecting flange, and the cochlear electrode placement slot of the clamping device connecting flange are connected in sequence.

[0031] The present invention takes the objective and accurate realization of the "soft surgery" technology for cochlear implantation as its entry point. It is a handheld micro device that can stably clamp and deliver micro silicone soft electrodes and has axial rotation. The design of the device is close to and in line with the original habits of surgical technology, and can well implement "soft surgery" to improve the effect of cochlear implantation, and can also make the scope of the surgical cavity window more minimally invasive, shortening the patient's recovery time.

[0032] The present invention is easy to operate and can intelligently and gently complete cochlear implantation in a tiny implantation space. It can be suitable for the tiny implantation space of the cochlear implant, causes little damage to the cochlear microstructure, and protects its residual function. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a front view structural schematic diagram of the cochlear implant device of the present invention;

[0034] Figure 2 It is a schematic diagram of the rear view structure of the cochlear implant device of the present invention;

[0035] Figure 3 It is a schematic diagram of the three-dimensional structure of the cochlear implant device of the present invention;

[0036] Figure 4 It is a schematic cross-sectional view of the structure of the cochlear implant device of the present invention;

[0037] Figure 5 It is a schematic diagram of the three-dimensional structure of the housing of the cochlear implant device of the present invention;

[0038] Figure 6 It is a schematic diagram of the cross-sectional structure of the housing of the cochlear implant device of the present invention;

[0039] Figure 7 It is a schematic diagram of the top view of the structure of the holding device of the cochlear implant device of the present invention;

[0040] Figure 8 It is a schematic diagram of the three-dimensional structure of the holding device of the cochlear implant device of the present invention;

[0041] Fig. 9 It is a schematic structural diagram of a guide device for a cochlear implant device of the present invention;

[0042] Fig.10 This is a schematic diagram of the connecting flange structure of the holding device of the cochlear implant device of the present invention;

[0043] Fig.11 It is a structural schematic diagram of one end of the first connecting flange of the cochlear implant device of the present invention;

[0044] Fig.12 This is a schematic structural diagram of the other end of the first connecting flange of the cochlear implant device of the present invention;

[0045] Fig.13 It is a schematic diagram of the structure of the second connecting flange of the cochlear implant device of the present invention. DETAILED DESCRIPTION

[0046] Example 1

[0047] Reference Figure 1-Figure 4 The cochlear implant device of the present invention includes a housing 6, a linear motor 72, a stepping motor 71, a clamping device 2, and a guiding device 1.

[0048] Reference Figure 5-Figure 6The housing 6 is a hollow structure, and a linear motor fixing hole 63 is provided at the bottom, such as a screw hole. The side wall of the housing 6 is provided with an opening, and both ends of the opening are sunken to form a housing cover mounting position 62. The housing cover 60 covers the opening to seal the opening of the housing 6. A linear motor positioning hole 61 is provided at one end of the housing 6, and a guide rod through hole 64 is also provided in the linear motor positioning hole 61. The linear motor 72 is located in the housing 6, and the front end extends into the linear motor positioning hole 61, and the guide rod 720 extends from the guide rod through hole 64.

[0049] Reference Figure 3-Figure 4 After the guide rod 720 extends from the guide rod through hole 64, the fixed part of the stepper motor 71 is installed at the end of the guide rod 720. The rotor of the stepper motor drives the output shaft to rotate, and the output shaft is connected to the clamping device 2. The guide device 1 is provided with a cochlear electrode guide groove in front of the clamping device 2.

[0050] The housing 6 may be provided with an independent power supply system or device (not shown in the figure), but may also be connected to an external power supply system, such as having a power supply system connection terminal, a plug connected to an external power supply system, etc.

[0051] When in use, the linear motor 72 drives the guide rod 720 to move forward and backward in a straight line, thereby driving the stepper motor 71 and the clamping device 2 to move forward and backward in a straight line. After the cochlear electrode 10 reaches the predetermined position, the linear motor 72 stops, and the output shaft of the stepper motor 71 drives the clamping device to rotate. The linear motion of the linear motor transports the electrode and drives the electrode to rotate around its axis through the stepper electrode, thereby automatically completing the operation of the cochlear implant.

[0052] Example 2

[0053] Reference Figure 7-Figure 8 In this embodiment, the clamping device 2 is a symmetrical two-stage displacement amplification mechanism; wherein, the left and right ends of the clamping device mounting plate 20 are respectively provided with a first-stage displacement amplification lever 24, the first ends of the two first-stage displacement amplification levers 24 are connected to the input end 21 driven by the electro-displacement generator through the first-stage input flexible hinge 22, and the second ends are connected to the first-stage output flexible hinge 25; one end of the first-stage displacement amplification lever fulcrum hinge 23 of the first-stage displacement amplification lever 24 is connected to the position of the first-stage displacement amplification lever 24 close to the first-stage input flexible hinge 22, and the other end of the first-stage displacement amplification lever fulcrum hinge 23 is connected to the left or right side of the clamping device mounting plate 20 according to the position of the first-stage displacement amplification lever 24 on the clamping device mounting plate 20. The first-stage output flexible hinge 25 is connected to one end of the second-stage output flexible hinge 26 through a connecting block.

[0054] At least two secondary displacement amplification lever fulcrum hinges 28 are provided in front of the clamping device mounting plate 20, and the clamping device is provided with two output ends 27. One end of the secondary displacement amplification lever of the two output ends is respectively connected to the secondary displacement amplification lever fulcrum hinge 28, and in the other direction of the secondary displacement amplification lever, the secondary output flexible hinge 26 is connected to the secondary displacement amplification lever. The free ends of the two outputs 27 form the cochlear electrode clamping end.

[0055] In this embodiment, the primary input flexible hinge 22, the secondary input flexible hinge 26, the primary output flexible hinge 25, the primary displacement amplification lever fulcrum hinge 23, and the secondary displacement amplification lever fulcrum hinge 28 can be straight beam type flexible hinges respectively.

[0056] In addition, if Figure 8 As shown, the primary displacement amplification lever fulcrum hinge 23 and the secondary displacement amplification lever fulcrum hinge 28 are located in the first plane, the primary input flexible hinge 22, the secondary input flexible hinge 26, and the primary output flexible hinge 25 are located in the second plane, and the first plane and the second plane are two parallel planes.

[0057] Reference Fig.10 , Figure 3-Figure 4 The clamping device connecting flange 4 includes a plate 40, and a protruding portion 45 is provided at the front bottom of the plate 40. The position of the protruding portion 45 close to the plate 40 is provided with an electrodisplacement generator installation position 42 for installing the electrodisplacement generator 3. The electrodisplacement generator 3 is connected to the two input ends 21 of the clamping device 2. In front of the electrodisplacement generator installation position 42, the protruding portion 45 is provided with a first clamping device fixing hole 41, and the clamping device mounting plate 20 is provided with a second clamping device mounting hole 29. The second clamping device mounting hole 29 is aligned with the first clamping device fixing hole 41, and the clamping device mounting plate 20 is fixed to the protruding portion 45 by bolts.

[0058] By applying voltage to the electro-displacement generator 3 to cause deformation, the displacement is transmitted to the amplification mechanism of the clamping device 2 through the input terminal 21 and transmitted from the output terminal 27, thereby achieving the clamping, transportation and rotation of the cochlear implant electrode. Therefore, this embodiment can use the displacement generator to cause the flexible clamping mechanism to produce a slight deformation to clamp the cochlear implant electrode.

[0059] Example 3

[0060] Reference Figure 3-Figure 4 In this embodiment, the first connecting flange 9 is located at the front end of the housing 6, including a cylinder, referring to Fig.11 The first end of the cylinder is provided with a stepper motor mounting hole 93, and the fixing part of the stepper motor 71 is inserted into the stepper motor mounting hole 93 for fixing. There are also stepper motor fixing holes 91 around the stepper motor mounting hole 93, and the stepper motor 71 is reinforced by bolts. Fig.12 A linear motor guide rod mounting hole 94 is provided at the second end of the cylinder. After the guide rod 720 extends from the shell 6, it is inserted into the guide rod mounting hole 94 for fixing.

[0061] The second flange 8 is located at the front end of the stepper motor 71. Fig.13 , including a central stepper motor positioning hole 82, the front end of the stepper motor 71 extends into the stepper motor positioning hole 82, and the output shaft extends from the stepper motor positioning hole 82. In front of the second flange 8 is a plate 40 of the clamping device connecting flange 4.

[0062] Reference Fig. 9 One end of the cochlear electrode guide device 1 is annular, and the other end is provided with two cochlear electrode guide grooves arranged front and back, namely: a cochlear electrode input groove 12 at the rear end and a cochlear electrode output groove 11 at the front end.

[0063] Reference Figure 3 In this embodiment, the housing front tube 5 is also included. The housing front tube 5 is a hollow structure that runs through the front and back. One end is connected to the housing 6, and the other end is connected to one end of the ring of the guide device 1. The first connecting flange 9 and the stepper motor 71 are both located in the hollow structure of the housing front tube 5.

[0064] Reference Figure 3 , Figure 9-13 The first connecting flange 9, the front end of the housing front tube 5, the annular end of the guide device 1, the second connecting flange 8, and the top of the clamping device connecting flange 4 are provided with a cochlear electrode placement groove, such as Figure 9-13 As shown in the reference numerals 92, 13, 83, and 44, the above-mentioned cochlear electrode placement slots are connected in sequence and clamp the output end 27 of the device 2.

[0065] The specific embodiments of the present invention are described in detail above, but they are only examples, and the present invention is not limited to the specific embodiments described above. For those skilled in the art, any equivalent modifications and substitutions made to the present invention are also within the scope of the present invention. Therefore, the equalization changes and modifications made without departing from the spirit and scope of the present invention should be included in the scope of the present invention.

Claims

1. A cochlear implant device, characterized in that: It comprises a shell, a linear motor, a stepper motor and a clamping device. A cavity is provided in the shell, the linear motor is arranged in the cavity, the linear motor drives at least one guide rod to move forward and backward, a guide rod through hole is provided at one end of the shell cavity, the guide rod extends out of the guide rod through hole; the stepper motor comprises a fixed part and a rotor, the fixed part is installed at one end of the guide rod extending out of the cavity, and can move forward and backward with the guide rod; the rotor rotates around an axis, the axis is parallel to the movement direction of the guide rod; the clamping device is installed on the rotor, and can rotate with the rotor; The cochlear implant device further comprises a guide device, one end of which is annular and connected to the housing, and the other end of which is provided with a guide groove, and the clamping device is located between the end of the guide device provided with the guide groove and the stepping motor; The cochlear implant device also includes an electro-displacement generator, and the clamping device includes a displacement amplification structure and a cochlear electrode clamping end. The electro-displacement generator can deform after receiving a loading voltage, and the deformation can amplify the displacement through the displacement amplification structure, thereby adjusting the movement of the cochlear electrode clamping end.

2. The cochlear implant device according to claim 1, characterized in that: A first connecting flange is arranged outside the housing, and the stepping motor is mounted on the guide rod via the first connecting flange.

3. The cochlear implant device according to claim 2, characterized in that: A guide rod insertion hole is provided at one end of the first connecting flange, and the guide rod is inserted into the first connecting flange from the guide rod insertion hole and fixed; a stepper motor mounting structure is provided at the other end of the first connecting flange for mounting the stepper motor.

4. The cochlear implant device according to claim 1, characterized in that: It also includes a clamping device connecting flange, which is provided with an output shaft mounting hole, and the output shaft of the stepper motor is inserted into the output shaft mounting hole for fixation; the clamping device connecting flange is provided with a clamping device fixing structure, wherein the output shaft can drive the clamping device connecting flange to rotate, thereby driving the clamping device to rotate.

5. The cochlear implant device according to claim 4, characterized in that: The clamping device connecting flange comprises a disk and a protruding portion extending outward from a first plane of the disk, the output shaft through hole of the stepping motor is located on the disk; and the clamping device fixing structure is located on the protruding portion.

6. The cochlear implant device according to claim 1, characterized in that: The displacement amplification mechanism is provided with a clamping device mounting plate, and the displacement amplification structure is a two-stage displacement amplification mechanism, which includes an input end driven by an electro-displacement generator, the input end is connected to one end of a first-stage displacement amplification lever through a first-stage input flexible hinge, and the other end of the first-stage displacement amplification lever is connected to a first-stage output flexible hinge; one end of the first-stage displacement amplification lever fulcrum hinge is connected to the clamping device mounting plate, and the other end of the first-stage displacement amplification lever fulcrum hinge is connected to the position between the first-stage input flexible hinge and the first-stage output flexible hinge of the first-stage displacement amplification lever; the first-stage output flexible hinge is connected to one end of the second-stage input flexible hinge through a connecting block; the supporting device mounting plate is connected to the second-stage displacement amplification lever fulcrum hinge, and the second-stage displacement amplification lever fulcrum hinge and the first-stage displacement amplification lever fulcrum hinge extend in different directions; the second-stage displacement amplification lever fulcrum hinge and the second-stage input flexible hinge are connected to one end of the second-stage displacement amplification lever from different directions, and the other end of the second-stage displacement amplification lever forms a cochlear electrode clamping end.

7. The cochlear implant device according to claim 6, characterized in that: The displacement amplification structure is a symmetrical two-stage displacement amplification mechanism; wherein, a first-stage displacement amplification lever is respectively provided at the left and right ends of the clamping device mounting plate, and is respectively connected to the first-stage displacement amplification lever through the first-stage displacement amplification lever fulcrum hinges on the left and right sides; at least two second-stage displacement amplification lever fulcrum hinges are provided in front of the clamping device mounting plate, and one end of the two second-stage displacement amplification levers is respectively connected to the front of the clamping device mounting plate through the second-stage displacement amplification lever fulcrum hinges; the other ends of the two second-stage displacement amplification levers form a clamping end for clamping the cochlear electrode.

8. The cochlear implant device according to claim 6, characterized in that: The first-level displacement amplification lever fulcrum hinge and the second-level displacement amplification lever fulcrum hinge are located in a first plane, the first-level input flexible hinge, the second-level input flexible hinge and the first-level output flexible hinge are located in a second plane, and the first plane is parallel to the second plane, but they are different planes.

9. The cochlear implant device according to claim 1, characterized in that: The cochlear implant device has an independent power supply system or device inside, or can be connected to an external power supply system.

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