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Integrated program-controlled closed-loop optogenetics system

An all-in-one, optogenetic technology, applied in the field of optogenetics and medical devices, can solve the problems of inability to realize photo-stimulation program control, external trigger control of multiple devices to work together, susceptible to external interference, and affect experimental results. Multi-scene animal experiments, stable and reliable light signal, compact structure

Inactive Publication Date: 2021-08-13
SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

After several years of development, optogenetics has developed rapidly. However, the research and development and production of optogenetics devices are still in a relatively simple initial stage.
[0004] Currently patented and common optogenetic devices on the market mostly use a simple signal generator connected to a laser driver to drive the laser to emit laser light and transmit it through optical fibers. Since each module is connected by a cable, the system is large in scale and not easy to carry. At the same time, the system adopts split type Modular design is susceptible to external interference and low electromagnetic compatibility. In use, especially when working with other equipment, it is easy to cause optical signal instability and affect the experimental results; on the other hand, the existing optogenetic system has a single structure and function. Program control of light stimulation, external trigger control and multi-device collaboration cannot be realized

Method used

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  • Integrated program-controlled closed-loop optogenetics system
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  • Integrated program-controlled closed-loop optogenetics system

Examples

Experimental program
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Embodiment 1

[0043] Such as Figure 1-5 As shown, an integrated program-controlled closed-loop optogenetic system of this embodiment includes an integrated program-controlled closed-loop laser generator and an optical fiber probe. The integrated program-controlled closed-loop laser generator includes a core control board, a laser, and a External trigger port, power module, touch display module, laser driver module, optical power meter. Among them, the laser generator adopts an integrated design with a small structure and perfect functions. It can be used in optogenetics animal experiments with optical fiber probes.

[0044] Among them, the power module converts 220V AC power into low-voltage DC power, and then outputs 3.3-24V DC power through the DC-DC module to supply power for each module.

[0045] The laser is connected to the fiber optic probe to transmit the light source emitted by the laser to the fiber optic probe, and the test object is optically stimulated through the fiber optic...

Embodiment 2

[0065] The integrated program-controlled closed-loop optogenetic system of Example 1 was used to conduct optogenetic experiments on mice.

[0066] First, the virus was injected into the left M1 region of the C57BL / 6J of the experimental mouse. The virus carried the enhanced mutant hChR2 (E123T-H134R) of the photosensitive channel 13 protein that can activate neurons, and the protein can induce cations under blue light excitation. Channel 13 opens, causing the neuron to depolarize, which in turn induces an action potential and activates the neuron. After the effective infection of the virus is detected, the ferrule 14 of the optical fiber probe is fixed on the head of the experimental mouse, and it is put into the experimental box 5 for the experiment. During the experiment, the experimental mouse is monitored by a behavior monitor. Figure 5 .

[0067] In this embodiment, the experimental mice were stimulated by blue light, and the light intensity was set to 35mW through the ...

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Abstract

The invention discloses an integrated program-controlled closed-loop optogenetics system which comprises an integrated program-controlled closed-loop laser generator and an optical fiber probe, wherein the integrated program-controlled closed-loop laser generator comprises a core control board, a laser, as well as an external trigger port, a power supply module, a touch display module, a laser driving module and an optical power meter which are connected with the core control board. Integrated design is adopted for the laser generator, the whole system is small in structure, complete in function, convenient to carry and capable of being conveniently applied to optogenetics animal experiments, all modules in the integrated program-controlled closed-loop laser generator are integrally designed, the system is slightly influenced by the outside, and electromagnetic compatibility is greatly improved; in combination with the optical power meter, closed-loop control of the light intensity of the laser can be realized, and optical signals output by the laser can be ensured to be stable and reliable; and by arranging the touch display module and the external trigger port, multi-trigger-mode program control input can be achieved, and system functions can be expanded conveniently.

Description

technical field [0001] The invention relates to the fields of optogenetics and medical equipment, in particular to an integrated program-controlled closed-loop optogenetics system. Background technique [0002] Optogenetics technology is a new multidisciplinary interdisciplinary animal technology that precisely controls cell activity by combining optical technology, genetic technology and electronic information engineering technology. Using optogenetics technology, neuroscience researchers can deeply explore the position and relationship between neurons in a nucleus, and understand the internal interaction between multiple nuclei, so as to have a profound impact on the structure and function of the brain and nervous system. A clearer understanding, as the technology is increasingly used in research fields such as neuroscience, cellular zoology, signaling pathways, and more. In addition to basic neuron structure research, using optogenetic technology and some animal disease ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01K1/03A01K1/035A01K29/00A61D7/00A61B5/369
CPCA01K1/031A01K1/035A01K29/005A61D7/00A61B2503/40A61B2503/42
Inventor 张京钟余爽李潇亮王娜娜
Owner SUZHOU INST OF BIOMEDICAL ENG & TECH CHINESE ACADEMY OF SCI
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