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Passive flexible retinal prosthesis and preparation method thereof

A retinal prosthesis and passive technology, applied in semiconductor/solid-state device manufacturing, electrotherapy, electric solid-state devices, etc., can solve the problem of low photoelectric conversion efficiency of retinal prosthesis, achieve high photoelectric conversion efficiency and strong applicability , good flexibility

Active Publication Date: 2019-07-12
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

The retinal prosthesis introduces a submicron microhole array structure into the base layer or functional layer, and dopes silicon nanoparticles in the light-absorbing layer, using the microhole array structure with good light absorption ability and the surface plasmon excitation of silicon nanoparticles Effect to improve the light absorption rate and photoelectric conversion efficiency, and the perovskite material with strong photoelectric conversion ability is used as the light absorption layer for the first time, which solves the problem of low photoelectric conversion efficiency of the current retinal prosthesis to a certain extent

Method used

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  • Passive flexible retinal prosthesis and preparation method thereof
  • Passive flexible retinal prosthesis and preparation method thereof
  • Passive flexible retinal prosthesis and preparation method thereof

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Embodiment Construction

[0033] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention. In addition, the technical features involved in the various embodiments of the present invention described below can be combined with each other as long as they do not constitute a conflict with each other.

[0034] see figure 1 , figure 2 , Figure 3A , Figure 3B and Figure 8 , the passive flexible retinal prosthesis provided by the first embodiment of the present invention, the retinal prosthesis includes a flexible substrate 1, a first encapsulation layer arranged on the flexible substrate 1, and is arranged on the first encapsulation layer away from The functional layer on the surface of th...

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Abstract

The present invention belongs to the technical field of implantable bioelectronic devices and discloses a passive type flexible retinal prosthesis and a preparation method thereof. The retina prosthesis comprises a flexible substrate, a first encapsulation layer disposed on the flexible substrate and a functional layer disposed on a surface of the first encapsulation layer away from the flexible substrate. The functional layer comprises a light absorbing layer, the constituent material of the light absorbing layer is doped with silicon nanoparticles, and a sub-micron microporous array structure is formed in the flexible substrate or the functional layer. According to the invention, the light absorption rate and the photoelectric conversion efficiency are improved by using a microporous structure with good light absorption ability and the surface plasmon excitation effect of the silicon nanoparticles, the flexibility is good, and the applicability is high.

Description

technical field [0001] The invention belongs to the related technical field of implantable bioelectronic devices, and more specifically relates to a passive flexible retinal prosthesis and a preparation method thereof. Background technique [0002] When humans obtain information from the surrounding environment, 90% of the information is obtained through the eyes, but blindness caused by retinopathy or retinal degeneration, such as retinitis pigmentosa (RP) and age-related macular degeneration (AMD) ), generally cannot be treated by medicine and surgery. Blindness caused by retinal degeneration or photoreceptor cell disease will not affect the retinal ganglion cells to transmit signals through the visual pathway, so an artificial retina can be implanted to stimulate nerve cells to restore some visual ability. [0003] Among them, according to the different implantation positions of the stimulating electrodes, artificial retinas are mainly divided into two types: one is the ...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L51/42H01L51/44H01L51/46H01L51/48B82Y30/00A61F2/14A61N1/05A61N1/36
CPCB82Y30/00A61N1/36046A61N1/0543A61F2/14H10K71/00H10K71/611H10K85/30H10K30/35H10K30/81H10K30/88H10K77/111H10K2102/00Y02E10/549
Inventor 段永青王琪璐黄永安尹周平
Owner HUAZHONG UNIV OF SCI & TECH
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