Stacked Circuit Island Sections for Implantable Medical Devices
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Solution Overview
Problem
Implantable medical devices face challenges in minimizing their size to accommodate energy storage devices, such as batteries, while maintaining the necessary electrical circuitry for effective therapy delivery.
Innovation Solution
The use of a compact electrical circuit design with island sections and ribbon sections, where each island section has opposing major surfaces, allows for efficient stacking within the device housing, maximizing space for energy storage while minimizing the volume occupied by the circuitry.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the device uses a compact electrical circuit design with stacked island sections, then the volume used by the electrical circuit is reduced, but the device complexity increases
Solution Approach 1:
The patent transitions from a planar circuit layout to a three-dimensional stacked configuration. Multiple island sections are arranged in vertical layers within the housing, with ribbon sections connecting corresponding pads between layers. This dimensional change allows the circuit to occupy significantly less volume while maintaining all necessary electrical connections and functionality.
Solution Approach 2:
The circuit design embeds multiple island sections within the housing volume in a nested manner. Each island section is positioned in a specific layer, with ribbon sections weaving through the structure to connect pads across different layers. This nesting approach maximizes the use of available three-dimensional space, allowing the circuit to be compact while preserving all electrical pathways.
2Duration of action of moving object
If the device maximizes space for energy storage, then the operational capacity and battery life are enhanced, but the volume available for electrical circuitry is reduced
Solution Approach 1:
By stacking island sections in three dimensions, the circuit occupies minimal volume, allowing the energy storage device to dominate the housing volume. The vertical arrangement of circuit elements creates efficient space utilization, enabling the battery to occupy the majority of the available space while the circuit maintains all necessary functionality in a compact footprint.
Solution Approach 2:
The circuit is divided into multiple discrete island sections, each performing specific functions. This segmentation allows for optimized spatial arrangement where each island can be positioned to minimize overall circuit volume while maintaining electrical connectivity through ribbon sections. The modular island design enables efficient packing around the energy storage device.
Data Source
AI summary
Devices and circuits for reducing sizes of medical devices are disclosed. In one example, an implantable medical device (IMD) may include a housing, multiple electrodes outside of the housing, an energy storage device within the housing, and a circuit within the housing and connected to the energy storage device and the two or more electrodes. In some cases, the circuit may include two or more island sections, with each island section connected to at least one other island section by a ribbon section. Each island section may have two opposing major surfaces. A first island section and a second island section may be stacked within the housing such that one of the two major surfaces of the first island section faces one of the two opposing major surfaces of the second island section.