Visual cortex nerve stimulating device and stimulating method

A neurostimulation and visual cortex technology, used in physical therapy, artificial respiration, ophthalmology treatment, etc., can solve the problems of enhanced rejection response, decreased stimulation efficiency of stimulation electrodes, etc., to reduce rejection response, avoid continuous stimulation, enhance long-lasting effect

Inactive Publication Date: 2007-10-24
CHONGQING UNIV
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Problems solved by technology

[0005] However, the applicant has found through long-term research that while the stimulating electrode is electrically stimulating the cortical nerve tissue, the nerve tissue will show a rejection reaction to the stimulation electrode; and with the prolongation of the continuous stimulation time, the rejection reaction will be enhanced ,...

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  • Visual cortex nerve stimulating device and stimulating method
  • Visual cortex nerve stimulating device and stimulating method
  • Visual cortex nerve stimulating device and stimulating method

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Embodiment Construction

[0028] As shown in FIG. 1 , the device is composed of a microelectrode array chip 2 , a multi-channel analog switch and a control circuit unit 4 , and a stimulation signal generation and coding part 5 . The micro-electrode array chip 2 realizes the interface with the visual cortex neural tissue 1, and transmits the stimulating electric signal to the visual cortex neurons to generate the required nerve excitation. The multi-channel analog switch and control circuit unit 4 is connected to the micro-electrode array chip 2 through the conductive cable 3, and controls the signal on-off of each ultra-fine stimulation point in the micro-electrode array chip 2, the stimulation signal generation and coding part 5 and the signal path control part 4. Use wired or wireless connection to convert external image information into stimulating electrical signals and output them from multiple channels to multiple analog switches and control circuit unit 4.

[0029] An embodiment of the present i...

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Abstract

The invention relates to a microelectrode array stimulation device that can stimulate visual cortical nervous tissue and the stimulation method. The device can output electric stimulation signal alternatively through different stimulation points under action of control circuit, to stimulate visual cortical nervous tissue. The device comprises microelectrode array chip, signal path control part, stimulation signal generation part and coding part. The microelectrode array chip is constructed with a plurality of stimulation unit arrays on one base plate, each stimulation unit is corresponding to one stimulation position on visual cortical nervous tissue, and includes a plurality of ultra micro-stimulation points formed with a plurality of microelectrodes. The signal path control part selects the connection way of stimulation signal and ultra-micro stimulation point in stimulation unit and control visual cortical stimulation mode, couples stimulation signal to visual cortical nervous tissue through selected ultra-micro electrode couple. The invention can realize automatic stimulation for visual cortical nervous tissue and increase life length for stimulation electrode.

Description

technical field [0001] The invention relates to a technique for stimulating nerve tissue of visual cortex. Background technique [0002] According to incomplete statistics, more than 45,000,000 people are blind in the world. Any abnormality in any part of the visual transmission pathway will cause damage or loss of visual function. At present, the medical community has tried to use various methods such as drugs, laser, radiation, cell transplantation and macular transposition surgery, but each has certain indications and shortcomings, and the curative effect is not satisfactory. [0003] From the perspective of vision formation and visual information transmission pathways, visual function restoration can be carried out at three levels: retina, optic nerve, and visual cortex, but the existing research results and technical level are still difficult to effectively achieve visual restoration. At present, the hot spot of research at home and abroad ...

Claims

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Application Information

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IPC IPC(8): A61N1/36A61F9/00
Inventor 侯文生郑小林吴小鹰阴正勤杨军廖彦剑王星胡宁
Owner CHONGQING UNIV
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