Bioelectrode Rear-Mounted Control Circuit for Dense Implant Arrays
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Solution Overview
Problem
Existing electrode arrays face challenges in densely arranging electrodes within a living body due to the need for space to accommodate electrode control circuit chips, making it difficult to implant a high number of electrodes in small areas like the eyeball.
Innovation Solution
The electrode control circuit is integrated into the rear portion of the electrode body within its contour, allowing for a compact design without additional lateral space, and can be contained in a recess or covered with an electrically conductive layer, enabling dense arrangement and liquid-tight sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If each electrode is equipped with an individual electrode control circuit chip, then each electrode can be individually controlled, but the spacing between electrodes cannot be small and dense arrangement becomes difficult
Solution Approach 1:
The electrode control circuit chip is merged with the electrode body by fixing it to the rear portion of the electrode body within the front-viewed contour. This integration eliminates the need for separate lateral space for the control circuit, allowing electrodes to be densely arranged while maintaining individual control capability.
Solution Approach 2:
The control circuit is positioned in the depth dimension (rear portion) of the electrode body rather than occupying lateral space. By utilizing the z-axis dimension within the electrode's contour, the design achieves dense planar arrangement while accommodating control circuits vertically.
2Area of stationary object
If the electrode control circuit is integrated within the electrode body contour, then electrode density increases, but the control circuit requires protection from biological invasion
Solution Approach 1:
The electrode control circuit chip is nested within a recess formed in the rear portion of the electrode body. This recess provides a protective enclosure that shields the control circuit from biological invasion while maintaining the compact integrated design for high electrode density.
Solution Approach 2:
The electrode body itself acts as a protective shell enclosing the control circuit chip. The rear portion of the electrode body forms a protective barrier that prevents biological substances from reaching the control circuit while allowing the overall structure to remain compact.
Data Source
AI summary
Providing an electrode structure capable of realizing an electrode array which allows each of the electrodes to be individually controlled while allowing them to be densely arranged and placed in a living body. According to the present invention, an electrode control circuit electrically connected to an electrode body is fixed to a rear portion of the electrode body within a front-viewed contour of the electrode body. This electrode control circuit may be contained in a recess formed in the rear portion of the electrode body, or it may be fixed to the back face of the electrode body. Conversely, an electrically conductive material layer covering the electrode control circuit may be used as the electrode body. A plurality of such bioelectrodes may be arranged in a two-dimensional form on a substrate or connected by a connection line including an electrical wire. Such configurations allow the bioelectrodes to be densely arranged.