Cylindrical Neural Implant Packaging via Nested Circuit Boards
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Solution Overview
Problem
Neural implants face challenges in reducing overall volume while maintaining performance due to the space constraints imposed by electrical components such as circuit boards, power sources, and antennas, which can lead to tissue damage and inaccessibility once implanted.
Innovation Solution
The approach involves wrapping multiple circuit boards and components in a cylindrical fashion to form a geometric prism, with flex cables for power and data transmission, and integrating inductive charging coils and antennas in a spiral planar conducting material to increase power transfer efficiency and reduce device height.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If electrical components (circuit boards, power sources, antennas) are arranged in traditional stacking or linear configurations, then device functionality is maintained, but overall device volume and height increase
Solution Approach 1:
The patent implements nesting by placing circuit boards, power sources, and antennas within concentric cylindrical structures. The power source is positioned at the center, with circuit boards arranged in intermediate cylindrical layers, and antennas in outer layers, creating a nested configuration that minimizes overall device volume while maintaining all necessary functionalities.
Solution Approach 2:
The patent transitions from traditional planar stacking arrangements to a three-dimensional concentric cylindrical configuration. By organizing components along the radial and axial dimensions of cylinders rather than merely stacking them in parallel planes, the design achieves compact volume reduction while preserving electrical connectivity and signal transmission pathways.
2Length of stationary object
If inductive charging coils are stacked above or below circuit boards, then power transmission is achieved, but device height increases
Solution Approach 1:
The inductive charging coil is nested within the concentric cylindrical structure, positioned either in an intermediate layer with circuit boards or in the central region. This nested arrangement allows the coil to be integrated within the existing device footprint rather than adding height, while maintaining effective inductive coupling for power transfer to the circuit boards.
Solution Approach 2:
Instead of stacking the inductive charging coil in the vertical dimension above or below the circuit boards, the patent positions it in the radial or axial dimension within the cylindrical structure. This dimensional reorganization reduces the overall device height while preserving the power transfer function through optimized coil-to-board coupling pathways.
3Loss of energy
If planar conducting material is wrapped in spiral fashion to form geometric cylinder, then power transfer efficiency increases and volume reduces, but manufacturing complexity increases
Solution Approach 1:
The patent applies curvature by wrapping the planar conducting material in a spiral fashion to form a geometric cylinder. This curved configuration increases the surface area to volume ratio, which enhances the inductive coupling efficiency and reduces power loss. The cylindrical geometry also provides structural compactness that facilitates integration within the neural implant constraints.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
This configuration enhances the density and compactness of neural implants, reducing tissue damage risk and improving the viability of brain-computer interfaces by minimizing the overall height and volume of the device while maintaining high performance.
Implementation Method 1
inductive charging coils, or power coils, may be designed to reduce the overall height of electronic devices by wrapping the power coil around the perimeter of the device and/or other electronic components
Data Source
AI summary
A space-saving configuration for electronics is disclosed in which at least four circuit boards are arranged to form sides of a five-or-greater sided geometric prism that are perpendicular to a common plane. That is, they are stood up on their sides and connected with flex cable to approximate a cylinder. Each circuit board can include one or more sides with electrical components. The circuit boards make up at least half of the five-or-greater sided geometric prism such that the circuit boards wrap at least halfway around. A common connector on one of the circuit boards can be configured to receive power from an underlying motherboard, and flex cables connecting adjacent circuit boards in series distribute power received from the connector to each of the circuit boards in series.