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Artificial retina implant

A retina and implant technology, applied in the field of medical devices, can solve problems such as insufficient activation of photodiodes, and achieve the effect of easy observation

Active Publication Date: 2015-09-02
ZHEJIANG NUROTRON BIOTECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, since the general incident light is not enough to activate the photodiode, an additional light source amplification system is required to provide sufficient energy.

Method used

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Embodiment Construction

[0022] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0023] see Figure 1-Figure 3 , an artificial retinal implant, comprising a receiving coil 10, a demodulation stimulation module 20, an electrode array 30 and a return electrode 40, wherein,

[0024] The receiving coil 10 is concentrically connected with the transmission coil of the artificial retina extracorporeal device, and receives the image coding signal and energy emitted by the extracorporeal device;

[0025] The demodulation stimulation module 20 is connected with the receiving coil 10, decodes the received image encoding signal of the receiving coil 10, and converts it into an electrical signal for transmission to the electrode array 30; Transformation, the demodulation stimulation module 20 includes a power recovery module 210, an envelope detection module 220, a clock extraction module 240, a decoding module 230, a forward contr...

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Abstract

The invention discloses an artificial retina implant. The artificial retina implant comprises a receiving coil, a demodulation stimulation module, an electrode array and a loop electrode. The receiving coil is in alignment connection with a transmission coil of an artificial retina in-vitro device and receives image coding signals and energy emitted by the in-vitro device, the demodulation stimulation module is connected with the receiving coil and decodes the image coding signals received by the receiving coil, converts the received image coding signals into electrical signals and transmits the electrical signals to the electrode array, and the received energy is converted. The artificial retina implant can achieve the visual effect only by stimulating retinal ganglion cells of the inner layer, and is easy to implant, safe and reliable.

Description

technical field [0001] The invention belongs to the field of medical devices, in particular to an artificial retinal implant. Background technique [0002] In recent years, with the continuous advancement of science and technology, artificial retinal repair technology has been produced, which directly converts optical signals into electrical signals, and then uses electrical signals to stimulate retinal inner layer cells, which can restore the patient's vision to a certain extent. It has become a research hotspot in the field of visual restoration. The methods of retinal electrical stimulation are divided into two categories according to the location of the stimulating electrodes. The first type is embedded in the photoreceptor cell layer with a micro-current stimulation chip generated by a photosensitive diode, which is called a sub-retina implant, and its electrical stimulation targets are mainly bipolar cells; the second type is The radio frequency current transmits the...

Claims

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Application Information

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IPC IPC(8): A61F9/08A61N1/36
Inventor 孙晓安谭治平洪宇祥祁姝琪
Owner ZHEJIANG NUROTRON BIOTECH
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