A cochlear implant magnetic device with a switch

Abstract

The present invention discloses a cochlear magnetic device with a switch. An upper brass strip is arranged on the inner side of the housing at the uppermost part of the gear, and a lower brass strip is arranged on the inner side of the housing at the lowermost part of the gear. The shape of the magnet matches the shape inside the gear. When the gear rotates, it drives the magnet to rotate. The magnet is composed of an axially symmetric N pole and S pole and can rotate at any angle around the central axis in the gear. When the switch part is at one end side, the rack drives the gear, so that the N pole and S pole of the magnet inside the gear are in a horizontal relationship, and the upper brass strip and the lower brass strip are at the interface of the N pole and S pole of the magnet. When the switch part is at the other end side, the rack drives the gear, so that the N pole and S pole of the magnet inside the gear are in a vertical relationship, and the upper brass strip and the lower brass strip are respectively on the N pole or S pole side of the magnet, and the magnetic induction lines of the N pole and S pole of the magnet are magnetically isolated. The magnet of the present invention can control the external magnetic force of the switch magnet according to the push of the switch part and can also adjust the magnetic force magnitude.

Description

Technical Field

[0001] The present invention belongs to the field of medical devices, and particularly relates to an artificial cochlea magnetic device with a switch. Background Art

[0002] A typical cochlear implant system includes an external device and an implant. The external device includes a transmitting coil and an external magnet. The external magnet has a traditional coin shape and a north-south magnetic dipole, and the north-south magnetic dipole is perpendicular to the patient's skin to generate external magnetic field lines. A corresponding receiver component implant is implanted under the patient's skin, with a receiving coil and an internal magnet. The internal magnet also has a coin shape and a north-south magnetic dipole, and the north-south magnetic dipole is perpendicular to the patient's skin to generate internal magnetic field lines. The internal and external magnets attract each other to fixedly connect the external device and the implant.

[0003] Currently, the best way to connect the external device and the implant is through magnets. For patients, the external device needs to be removed at least once each time. If they need to take a bath, swim, or do strenuous exercise, it needs to be removed several times a day. And since the external device and the implant need to be magnetically attracted to prevent them from falling during normal use, the magnetic force between them is relatively large. In current use, they are directly removed, which causes certain pain and discomfort for children and patients with sensitive scalps each time. Moreover, when the magnet of the external device in the prior art needs to adjust the magnetic force, it needs to be removed to replace magnets with different magnetic attractions, which is very inconvenient. Summary of the Invention

[0004] To solve the above problems, the technical solution of the present invention is as follows: An artificial cochlea magnetic device with a switch, including a housing, a switch part, an upper brass bar, a rack, a gear, a magnet, and a lower brass bar, wherein,

[0005] The switch part is arranged on the outer side of the housing, the switch part is connected to the rack, the rack matches the shape of the gear, an upper brass bar is arranged on the inner side of the housing at the uppermost part of the gear, a lower brass bar is arranged on the inner side of the housing at the lowermost part of the gear, the shape of the magnet matches the shape of the inner side of the gear, and when the gear rotates, it drives the magnet to rotate; the magnet is composed of an axially symmetric N pole and S pole, and can rotate at any angle around the central axis in the gear; when the switch part is at one end side, the rack drives the gear to make the N pole and S pole of the magnet inside the gear in a horizontal relationship, and the upper brass bar and the lower brass bar are at the interface of the N pole and S pole of the magnet; when the switch part is at the other end side, the rack drives the gear to make the N pole and S pole of the magnet inside the gear in a vertical relationship, and the upper brass bar and the lower brass bar are respectively on the N pole or S pole side of the magnet to isolate the magnetic induction lines of the N pole and S pole of the magnet.

[0006] Preferably, a 120° - 180° fan-shaped area is arranged on the toothed part of the gear.

[0007] Preferably, the magnet is in the shape of a kidney-shaped column or a hexagonal column.

[0008] Preferably, it further includes a shaft portion and a sleeve. The sleeve is arranged outside the magnet. The inner shape of the sleeve matches the shape of the magnet. An axial portion is arranged outside the sleeve. The axial portion is in the shape of a cap, and a protrusion is arranged at the center of the cap top. The rotation of the axial portion drives the rotation of the sleeve, and the rotation of the sleeve drives the rotation of the magnet.

[0009] Preferably, key grooves are arranged on both the axial portion and the sleeve, and a key portion is arranged inside the gear. The shape of the key portion matches the shape of the key groove, so that the gear is clamped with the axial portion, and the relative positions of the axial portion and the sleeve are fixed.

[0010] Preferably, a U-shaped groove is arranged on the inner side of the housing to clamp both ends of the axial portion, so that the axial portion can rotate at any angle around the center.

[0011] The beneficial effects of the present invention are as follows: Existing cochlear implant users need to take out and put in the transmission coil every day. When taking out and putting in, due to the magnetic attraction of the magnet, the scalp is pulled. Especially for children with relatively tender skin, it is easy to damage the scalp and the implant coil. When taking out and putting in the transmission coil in the present invention, from the on state to the off state, the magnetic force of the external magnet is turned off, thereby avoiding damage to the scalp and the implant coil of cochlear implant users and improving the comfort of taking out and putting in and the reliability of the product; at the same time, the magnitude of the magnet suction force can also be precisely adjusted by adjusting the position of the push button according to actual needs, without the need to replace magnets of different specifications for adaptation. Description of the Drawings

[0012] Figure 1 Schematic diagram of the magnetic opening structure of the cochlear implant magnetic device with a switch according to a specific embodiment of the present invention;

[0013] Figure 2 Schematic diagram of the structure at the magnet of the magnetic opening of the cochlear implant magnetic device with a switch according to a specific embodiment of the present invention;

[0014] Figure 3 Schematic diagram of the magnetic closing structure of the cochlear implant magnetic device with a switch according to a specific embodiment of the present invention;

[0015] Figure 4 Enlarged schematic diagram of the magnetic closing of the cochlear implant magnetic device with a switch according to a specific embodiment of the present invention;

[0016] Figure 5 Cross-sectional schematic diagram of the cochlear implant magnetic device with a switch according to a specific embodiment of the present invention;

[0017] Figure 6 Three-dimensional structure schematic diagram of the cochlear implant magnetic device with a switch according to a specific embodiment of the present invention;

[0018] Figure 7Explosion diagram of the cochlear implant magnetic device with a switch according to a specific embodiment of the present invention. Specific embodiments

[0019] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings.

[0020] See Figure 1-2 , a schematic structural diagram when the magnetism of a cochlear implant magnetic device with a switch is turned on. Assemble this magnetic device in the cochlear implant system. The transmission wire 1 is connected to the housing 2. A circuit part 3 is arranged inside the housing 2. The external machine and the implant of the cochlear implant are attracted to each other by a magnet and an inner magnet 10 through the skin 21. A stimulator 12 and a receiving coil 9 are arranged in the implant. This magnetic device includes a housing 2, a switch part 4, an upper brass bar 5, a rack 6, a gear 7, a magnet 8, and a lower brass bar 11. Among them,

[0021] The switch part 4 is arranged on the outside of the housing 2. The switch part 4 is connected to the rack 6. The rack 6 is in a shape matching with the gear 7. An upper brass bar 5 is arranged on the inner side of the housing 2 at the uppermost part of the gear 7. A lower brass bar 11 is arranged on the inner side of the housing 2 at the lowermost part of the gear 7. The shape of the magnet 8 matches the shape inside the gear 7. When the gear 7 rotates, it drives the magnet 8 to rotate; the magnet 8 is composed of an axially symmetric N pole and S pole and can rotate at any angle around the central axis in the gear 7; when the switch part 4 is at one end side, the rack 6 drives the gear 7, so that the N pole and S pole of the magnet 8 inside the gear 7 are in a horizontal relationship, and the upper brass bar 5 and the lower brass bar 11 are at the interface of the N pole and S pole of the magnet 8; when the switch part 4 is at the other end side, the rack 6 drives the gear 7, so that the N pole and S pole of the magnet 8 inside the gear 7 are in a vertical relationship, and the upper brass bar 5 and the lower brass bar 11 are respectively on the N pole or S pole side of the magnet 8, and the magnetic field lines of the N pole and S pole of the magnet 8 are magnetically isolated.

[0022] In Figure 1 , Figure 2 When the magnetism is turned on, from the perspective of Figure 1 , the switch part 4 is at the rightmost end. The N pole and S pole of the magnet 8 are in a horizontal position. The upper brass bar 5 and the lower brass bar 11 are respectively on the inner side of the housing 2 and on the same line in the vertical direction. For specific magnetic field lines, see Figure 2 , and it is attracted to the inner magnet 10. The inner magnet 10 is a common disc-shaped magnet 8 in the prior art, and the magnetic poles are distributed in left and right semi-circular shapes. For the separate structure of the magnetic device in the magnetism-on state, see Figure 5 , and it also includes a shaft part 13 and a sleeve 14. The magnet 8 is placed in the sleeve 14. For the positional relationship between the shaft part 13 and the sleeve 14, see Figure 6 , Figure 7, the sleeve 14 is arranged outside the magnet 8. The inner shape of the sleeve 14 matches the shape of the magnet 8. An axial part 13 is arranged on the outside of the sleeve 14. The axial part 13 is in the shape of a cap, and a protrusion is arranged at the center of the cap top. The rotation of the axial part 13 drives the rotation of the sleeve 14, and the rotation of the sleeve 14 drives the rotation of the magnet 8.

[0023] See Figure 6 , Figure 7 For the perspective view and exploded view of, key grooves 16 are arranged on both the axial part 13 and the sleeve 14. A key part 15 is arranged inside the gear 7. The shape of the key part 15 matches the shape of the key groove 16, so that the gear 7 is clamped with the axial part 13, and the relative positions of the axial part 13 and the sleeve 14 are fixed. The switch part 4 includes a switch body 4-1, an anti-slip pattern 4-2 and a connecting plate 4-3. The connecting plate 4-3 is connected to the rack 6.

[0024] When magnetically closed, for the state of the magnetic device, see Figure 3 , Figure 4 , the switch part 4 is at the leftmost end, the N pole and S pole of the magnet 8 are in the vertical position, the upper brass strip 5 and the lower brass strip 11 are respectively on the inner side of the housing 2 and on the same line in the vertical direction. For the specific magnetic lines of force, see Figure 4 , the upper brass strip 5 and the lower brass strip 11 cut off the magnetic lines of force of the N pole and S pole of the magnet 8, so that the magnet 8 cannot attract the inner magnet 10.

[0025] At the same time, regarding the setting of the switch part 4, when the switch part 4 is between the leftmost end and the rightmost end, the magnetic suction force is between non-existent and existent, which is an adjustable magnetic force range. The magnitude of the magnetic force can be flexibly adjusted without changing the model of the magnet 8.

[0026] In a specific embodiment, a 120°-180° fan-shaped area is arranged on the toothed part of the gear 7. There is no need to arrange teeth in a full circle, which saves space for the housing 2 and minimizes the volume as much as possible.

[0027] The magnet 8 can be cylindrical or waist-shaped cylindrical or hexagonal cylindrical.

[0028] U-shaped grooves are arranged on the inner side of the housing 2 to clamp both ends of the axial part 13, so that the axial part 13 can rotate at any angle around the center.

[0029] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solutions of the present invention and not to limit them. Although the present invention has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the present invention.

Claims

1. An artificial cochlear magnetic device with a switch, characterized in that It includes a housing, a switch part, an upper brass bar, a rack, a gear, a magnet and a lower brass bar. Among them, the switch part is arranged on the outer side of the housing, the switch part is connected to the rack, the rack matches the shape of the gear, the upper brass bar is arranged on the inner side of the housing at the uppermost part of the gear, the lower brass bar is arranged on the inner side of the housing at the lowermost part of the gear, the shape of the magnet matches the shape inside the gear, and when the gear rotates, it drives the magnet to rotate; the magnet is composed of an axially symmetric N pole and S pole and can rotate at any angle around the central axis in the gear; it also includes an inner magnet of the implant, the inner magnet is a disc-shaped magnet, and the magnetic poles are distributed in left and right semi-circular shapes; when the switch part is at one end side, the rack drives the gear to make the N pole and S pole of the magnet inside the gear in a horizontal relationship, and the upper brass bar and the lower brass bar are at the interface of the N pole and S pole of the magnet, and the magnet attracts the inner magnet; when the switch part is at the other end side, the rack drives the gear to make the N pole and S pole of the magnet inside the gear in a vertical relationship, and the upper brass bar and the lower brass bar are respectively on the N pole or S pole side of the magnet to isolate the magnetic induction lines of the N pole and S pole of the magnet.

2. The cochlear implant magnetic device with a switch according to claim 1, characterized in that, A 120°-180° sector area is provided on the toothed part of the gear.

3. The cochlear implant magnetic device with a switch according to claim 1, characterized in that, The magnet is in the shape of a waist-shaped column or a hexagonal column.

4. The cochlear implant magnetic device with a switch according to claim 1, characterized in that, It also includes a shaft part and a sleeve. The sleeve is arranged outside the magnet, the internal shape of the sleeve matches the shape of the magnet, the shaft part is arranged outside the sleeve, the shaft part is in the shape of a cap, and a protrusion is provided at the center of the cap top. The rotation of the shaft part drives the rotation of the sleeve, and the rotation of the sleeve drives the rotation of the magnet.

5. The cochlear implant magnetic device with a switch according to claim 4, characterized in that, Key grooves are provided on both the shaft part and the sleeve, and a key part is arranged inside the gear. The key part matches the shape of the key groove to make the gear engage with the shaft part, and the relative positions of the shaft part and the sleeve are fixed.

6. The cochlear implant magnetic device with a switch according to claim 4, wherein, A U-shaped groove is arranged on the inner side of the housing to clamp both ends of the shaft part to make the shaft part rotate at any angle around the center.

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