Implantable neural signal recording system based on body channel transmission technology

A neural signal and channel transmission technology, applied in the field of implantable neural signal recording system, can solve the problems of circuit tissue damage and high transmission power consumption

Inactive Publication Date: 2012-12-19
INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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  • Abstract
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  • Application Information

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Problems solved by technology

The use of radio frequency transmission can solve the problem of metal wire transmission, but the transmission power consumption is high, and the excess

Method used

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  • Implantable neural signal recording system based on body channel transmission technology
  • Implantable neural signal recording system based on body channel transmission technology
  • Implantable neural signal recording system based on body channel transmission technology

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Example Embodiment

[0020] The human body has the characteristics of conductors and electrolytes. H. Kanai proposed a simplified equivalent circuit of cells or tissues, such as figure 1 Shown. Among them, Cm is the cell membrane capacitance, Ri is the intracellular resistance, and Re is the extracellular resistance. The electrical conductivity of the human body can be used as a waveguide to transmit the electrical signals recorded by the implantable nerve signal recording system.

[0021] See Figure 2-Figure 5 As shown, the present invention provides an implantable neural signal recording system based on body channel transmission ( figure 2 Medium), including:

[0022] A nerve signal recording microelectrode 10, the nerve signal recording microelectrode 10 adopts an Utah flat microelectrode array, the electrode has excellent biocompatibility, can be implanted for a long time and remains stable. There are multiple recording points on the neural signal recording microelectrode 10, and electrical sig...

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Abstract

An implantable neural signal recording system based on body channel transmission technology comprises a neural signal recording microelectrode, a neural signal pre-processing circuit, an internal emitter, a first signal transmission contact electrode, a second signal transmission contact electrode, an external receiver, and a computer. The neural signal pre-processing circuit with an input end connected with the neural signal recording microelectrode acquires internal neural signals and converts the signals into digital signals. An input end of the internal emitter is connected with an output end of the neural signal pre-processing circuit. The first signal transmission contact electrode is connected with an output end of the internal emitter. An input end of the external receiver is connected with the second signal transmission contact electrode. An input end of the computer is connected with an output end of the external receiver, and the computer receives and processes the signals input in the external receiver. A body channel is used as signal transmission medium, the connection of an internal implanted device with an external device by metal connecting wires is not needed, and accordingly wound infection due to wire connection can be avoided. The implantable neural signal recording system based on body channel transmission technology has the advantages that heat capacity is low, implant tissues are benefited, and the service life of an implanted system battery can be prolonged.

Description

technical field [0001] The invention belongs to the field of electronic technology, in particular to an implantable nerve signal recording system based on body channel transmission technology. Background technique [0002] Real-time recording of human neuron activity is of great significance for both scientific research and clinical medicine. At present, many kinds of nerve signal recording microelectrodes have been designed in academia. These electrodes are implanted into the body to extract nerve signals. The extracted nerve signals are directly connected to external devices through metal wires to realize signal transmission. In medical applications, the transmission method that directly connects electrodes implanted in the body to external devices through metal wires is prone to infection. In addition, this method generally anesthetizes the subject, so it is difficult to record the neural signals of a freely moving person in a non-anesthetized state, and it cannot be rec...

Claims

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Application Information

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IPC IPC(8): A61B5/04G08C17/06
Inventor 张旭桂赟陈弘达
Owner INST OF SEMICONDUCTORS - CHINESE ACAD OF SCI
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