Optical fibre bending sensor for monitoring artificial cochlea electrode bending implantation and use thereof

A technology of cochlear implants and sensors, applied in ear therapy, etc., can solve the problems of high cost of cochlear implants, high cost of cochlear implants, and high requirements for implantation operations, and achieve the effects of simple structure, low cost, and convenient use

Inactive Publication Date: 2005-05-11
TIANJIN UNIV
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  • Summary
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  • Claims
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Problems solved by technology

The reason for this situation is the current high cost of cochlear implants
On the one hand, this is because of the high cost of cochlear implants, and on the other hand, implantation surgery has high requirements for hospitals and doctors. Only qualified hospitals and specially trained doctors are qualified to perform this surgery.

Method used

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  • Optical fibre bending sensor for monitoring artificial cochlea electrode bending implantation and use thereof
  • Optical fibre bending sensor for monitoring artificial cochlea electrode bending implantation and use thereof
  • Optical fibre bending sensor for monitoring artificial cochlea electrode bending implantation and use thereof

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Embodiment Construction

[0012] The specific implementation manners of the present invention will be described in detail below in conjunction with the accompanying drawings. as attached figure 1 As shown, the optical fiber sensor probe is made of a silica optical fiber with a cladding (101) diameter of 80 microns and a core (102) diameter of 9 microns. The fiber is single-mode in the wavelength range from 980nm to 1600nm. After the fiber end face is cut with a special cutter, use a microscope to check that the end face is perpendicular to the fiber axis. Then a layer of aluminum reflective film 203 is evaporated on the end face of the optical fiber by vacuum coating technology. In order to prevent possible damage to the aluminum film during the use of the optical fiber sensor probe, a layer of silicon oxide film 204 is coated on the aluminum film as a protective film. Due to the use of 80 micron optical fiber, the possibility of the optical fiber being broken when the bending radius is small is red...

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Abstract

An optical-fibre curvature sensor for monitoring the curve implantation of artificial cochlear electrode is composed of light source, circulator, optical fibre, photoelectric detector, signal processing and displaying unit, and sensing probe with a planar front end with reflecting film and protecting film. Its application includes such steps as putting the sensing probe and a fine metal wire in said electrode, and implanting the electrode into cochlea while detecting the power of reflected light to obtain the curvature.

Description

technical field [0001] The invention relates to an optical fiber bending sensor, in particular to an optical fiber bending sensor for cochlear implantation, and belongs to the field of optical fiber biosensing. Background technique [0002] Human hearing is produced in this way: external sound waves pass through the external auditory canal and cause the tympanic membrane and the three auditory ossicles in the middle ear to vibrate, thereby causing the fluid in the inner ear and cochlea to fluctuate, prompting the auditory nerve cells to generate electrical signals. This electrical signal is transmitted to the brain through the auditory nerve and converted into auditory information in the brain. For patients with severe or profound sensorineural deafness, the auditory nerve cells in the cochlea are damaged, so that they cannot convert the fluctuations in the cochlea into the electrical signals required for the auditory nerve and brain to produce ...

Claims

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Application Information

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IPC IPC(8): A61F11/00
Inventor 李恩邦姚建铨郁道银习江涛奇卡罗周德志
Owner TIANJIN UNIV
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