IMD Core Circuitry Support Structure for Alignment

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Solution Overview

Problem

Implantable medical devices face challenges in locating circuitry for repeatable interconnections and maintaining positional accuracy, which complicates manufacturing and reliability.

Innovation Solution

A core circuitry support structure with a frame and alignment features facilitates the alignment and securement of hybrid circuitry assemblies, enhancing the repeatability of interconnections and manufacturing ease.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If traditional circuitry location methods are used, then manufacturing flexibility is maintained, but repeatability of interconnections and positional accuracy deteriorate

Engineering Contradiction:

Improverepeatability of interconnectionsVSAvoidcomplexity of circuitry location

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The circuitry support structure is segmented into a frame with distinct cavity regions, allowing separate positioning of different circuitry components. This segmentation enables precise location control for each component while maintaining overall structural organization, directly improving interconnection repeatability without excessive complexity.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The patent introduces a dedicated circuitry support structure as an intermediary component between the housing and the circuitry elements. This support structure with its frame and cavities serves as a mediator that establishes fixed spatial relationships, improving positional accuracy and interconnection repeatability while simplifying the overall assembly process.

Inventive Principle:

Principle #24Intermediary (Mediator)

2Reliability

If circuitry components are loosely positioned, then ease of assembly is improved, but reliability of spatial location deteriorates

Engineering Contradiction:

Improvereliability of spatial locationVSAvoidease of assembly

Core Design Contradiction:

ReliabilityVSEase of manufacture

Solution Approach 1:

The support structure implements local quality by providing specific cavity features at particular locations - such as recesses, protrusions, or shaped boundaries - that are tailored to match corresponding features on circuitry components. This localized geometric matching ensures reliable spatial positioning while maintaining ease of assembly through simple drop-in or snap-fit configurations.

Inventive Principle:

Principle #3Local quality

3Manufacturing precision

If precise alignment features are added, then manufacturing precision is improved, but device complexity increases

Engineering Contradiction:

Improvealignment precisionVSAvoidcomplexity of support structure

Core Design Contradiction:

Manufacturing precisionVSDevice complexity

Solution Approach 1:

The patent employs asymmetric alignment features such as non-circular protrusions or shaped recesses that provide precise orientation and positioning. These asymmetric features eliminate the need for complex adjustment mechanisms by providing unique fit directions, achieving high alignment precision with relatively simple structural additions.

Inventive Principle:

Principle #4Asymmetry

Data Source

PatentUS11706890B2IMD having a core circuitry support structure

Publication Date: 2023.07.18 CARDIAC PACEMAKERS INC

AI summary

A medical device includes a hybrid circuitry assembly and a core circuitry support structure. The core circuitry support structure includes a frame defining a cavity configured to receive at least a portion of the hybrid circuitry assembly. An outer surface of the frame is shaped to correspond to an inside surface of a core assembly housing configured to enclose the hybrid circuitry assembly and the core circuitry support structure.