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Multichannel micro-current stimulator in vitro

A multi-channel, micro-current technology, applied in the field of devices in the field of artificial nerve repair technology, can solve the problems of narrow adjustable range of output micro-current frequency, failure to fully stimulate peripheral nerve cells, etc. Adjustable effects

Inactive Publication Date: 2010-11-03
SHANGHAI JIAO TONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its shortcomings are: 1. The output stimulation current is a single channel, which cannot fully stimulate the peripheral nerve cells; 2. The output micro-current frequency can be adjusted in a narrow range, which is not suitable for the stimulation of other nerve cells.

Method used

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  • Multichannel micro-current stimulator in vitro
  • Multichannel micro-current stimulator in vitro
  • Multichannel micro-current stimulator in vitro

Examples

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Embodiment Construction

[0016] The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings: the present embodiment is implemented on the premise of the technical solution of the present invention, and detailed implementation methods and processes are provided, but the protection scope of the present invention is not limited to the following implementations example.

[0017] This embodiment is used for the in vitro fatigue test of multi-channel thin film electrodes implanted in the retina, subretina or suprachoroidal space in animals.

[0018] Such as figure 1 As shown, this embodiment includes: a pulse signal generator, a voltage-current conversion circuit, and a multi-channel connector, wherein:

[0019] The output end of the pulse signal generator is connected to the input ends of several voltage-current conversion circuits, and the output ends of several voltage-current conversion circuits are connected to the multi-channel connector. The p...

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Abstract

The invention discloses an in vitro multi-channel micro-current stimulator used in the field of an artificial nerve repair technology, which comprises a pulse signal generator, voltage-current conversion circuits, and a multi-channel connector, wherein the output end of the pulse signal generator is connected with input ends of the voltage-current conversion circuits, output ends of the voltage-current conversion circuits are all connected with the multi-channel connector, the pulse signal generator generates a single-phase pulse square-wave voltage signal and outputs the signal to the voltage-current conversion circuits, and the voltage-current conversion circuits convert the single-phase pulse square-wave voltage signal into a single-phase pulse current signal; and when the voltage-current conversion circuits convert the single-phase pulse square-wave voltage signal into the single-phase pulse current signal, the frequency and the pulse width of pulse are adjusted through the pulse signal generator, and the pulse amplitude is adjusted through a variable resistor Rref. The frequency, the pulse width, and the amplitude output by the in vitro multi-channel micro-current stimulator have larger adjustment range, and a device is easy to manufacture and has lower cost.

Description

technical field [0001] The invention relates to a device used in the technical field of artificial nerve repair, in particular to an extracorporeal multi-channel micro-current stimulator. Background technique [0002] Nerve repair is an important aspect in the field of neural engineering research, mainly including sensory function (auditory, vision, etc.) repair and motor function repair, has begun to be applied to clinical research, and has made some gratifying progress. In Deep Brain Stimulation (DBS) research, stimulating the corresponding parts of the brain can suppress abnormal neural activity, allowing Parkinson's disease (Pakinson Disease: PD) patients to control their behavior like normal people ; The use of implantable nerve microelectrodes to effectively stimulate the vagus nerve can treat epilepsy and greatly reduce the seizure cycle, seizure intensity and duration of epilepsy. In the research of artificial hearing restoration, the remaining auditory nerve fibers...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61N1/36A61F11/04A61F9/08A61F2/00
Inventor 隋晓红谭飞秦博
Owner SHANGHAI JIAO TONG UNIV
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