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MRI-compatible artificial cochlear magnet and device

A technology of cochlear implants and magnets, which is applied in the field of medical devices, can solve problems such as auditory hallucinations, and achieve the effects of improving reliability, avoiding multiple injuries and damages, and reliable connections

Pending Publication Date: 2021-02-12
ZHEJIANG NUROTRON BIOTECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Implant magnets can also cause imaging artifacts in MRI images, as well as auditory hallucinations due to the interaction of the MRI's external magnetic field with the implant

Method used

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  • MRI-compatible artificial cochlear magnet and device
  • MRI-compatible artificial cochlear magnet and device
  • MRI-compatible artificial cochlear magnet and device

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Embodiment Construction

[0028] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0029] see Figure 1-2 , an MRI-compatible cochlear implant magnet, comprising a base 6, an upper shell 7, a holding mechanism, several magnets 10 and a lower shell 11, the upper shell 7 and the lower shell 11 form a closed space, and the holding mechanism and the magnet 10 are accommodated therein ,

[0030] The base 6 is a threaded annular see image 3 , can be made of engineering plastics peek polyether ether ketone or PC, the base 6 is in the shape of a flying saucer as a whole, the outer periphery is a flange 6-3, and a positioning hole 6-4 is set on the flange 6-3, and the base 6 and the When silicone is injected, it provides better firmness. The outer surface of the base 6 is provided with a U-shaped groove 6-1, which is similar to the role of the positioning hole 6-4, and improves the firmness of the connection with the silicone. ...

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Abstract

The invention discloses an MRI compatible artificial cochlea magnet. The magnet comprises a base, an upper shell, a holding mechanism, a plurality of magnets and a lower shell, wherein the upper shelland the lower shell form a closed space, the holding mechanism and the magnets are contained in the closed space, the base is in a circular ring shape with threads, the bottom face of the upper shellis in a circular bowl shape, and the periphery of the upper shell is provided with threads; the lower shell is in a disc shape and covers the bowl-shaped opening of the upper shell, and the upper shell and the lower shell are assembled in the base. The magnet is arranged in the holding mechanism, consists of an N pole and an S pole which are axisymmetric, and can rotate at any angle by taking a central shaft as a center in the holding mechanism; the outer portion of the maintaining mechanism is in a cake shape, and the maintaining mechanism can rotate at any angle with the cake-shaped circlecenter as the axis in a closed space formed by the upper shell and the lower shell. The magnet can rotate at any angle in the maintaining mechanism according to the change of the direction of an external magnetic field, and the whole disc shape of the maintaining mechanism can also rotate at any angle with the circle center as the center.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to an MRI-compatible cochlear magnet and a device. Background technique [0002] A typical cochlear implant system includes an external machine containing a transmitting coil and an external magnet, and an implant. The external magnet has a traditional coin shape and a north and south magnetic dipole that is perpendicular to the patient's skin to create external magnetic field lines. A corresponding receiver assembly implant is implanted under the patient's skin, with receiver coils and internal magnets. The internal magnet also has a coin shape and a north and south magnetic dipole that is perpendicular to the patient's skin to create internal magnetic field lines. The inner and outer magnets are attracted to each other, so that the external machine and the implant are fixedly connected. [0003] A problem arises when a patient undergoes a Magnetic Resonance Imaging (MRI) examinat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61N1/05
CPCA61N1/0541
Inventor 谭治平周道民李楚祁姝琪陈施
Owner ZHEJIANG NUROTRON BIOTECH
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