Flexible Coupling Electrode Array for TTFields Positioning

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Solution Overview

Problem

The proper positioning of electrode arrays for Tumor Treating Fields (TTFields) therapy can be difficult, especially for self-application, leading to diminished effectiveness and requiring assistance, and conventional systems with multiple cables cause discomfort and complications due to tangling or detachment.

Innovation Solution

An electrode array assembly with flexible couplings between subassemblies allows for adjustable spacing and reduced cable usage, enabling easier positioning and securing of electrode arrays on the body, including the use of additional straps for improved positioning and security.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If multiple separate cables are used for multiple electrode arrays, then each array can be independently positioned, but cable tangling and discomfort increase

Engineering Contradiction:

Improveease of positioningVSAvoidcable management

Core Design Contradiction:

Ease of operationVSDevice complexity

Solution Approach 1:

Multiple electrode arrays are electrically connected through a single cable that branches into multiple conductive elements, eliminating the need for separate cables for each array. This merging approach reduces cable tangling and discomfort while maintaining independent positioning capability through the flexible coupling mechanism.

Inventive Principle:

Principle #5Merging (Combining)

Solution Approach 2:

The electrode array system is divided into multiple independent subassemblies that can be positioned separately on the patient's body, each connected to the single cable through flexible couplings. This segmentation allows independent positioning of each array while sharing a common cable infrastructure.

Inventive Principle:

Principle #1Segmentation

2Ease of operation

If electrode arrays are positioned without assistance, then patient independence is improved, but positioning accuracy decreases

Engineering Contradiction:

Improveself-positioning capabilityVSAvoidpositioning accuracy

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The patient can independently apply and position the electrode arrays using the flexible coupling mechanism, which is designed to be self-adjusting. The flexible coupling allows the patient to self-position the arrays while maintaining proper spacing and alignment, eliminating the need for helper assistance.

Inventive Principle:

Principle #25Self-service

Solution Approach 2:

The flexible coupling provides dynamic adjustment capability, allowing the spacing between electrode arrays to be modified as needed. This dynamic design enables patients to self-position arrays accurately by adjusting the flexible coupling length to achieve proper spacing without requiring external assistance.

Inventive Principle:

Principle #15Dynamics

3Ease of operation

If flexible coupling is used to connect electrode array subassemblies, then positioning independence is improved, but spacing control becomes less rigid

Engineering Contradiction:

Improvepositioning flexibilityVSAvoidspacing consistency

Core Design Contradiction:

Ease of operationVSManufacturing precision

Solution Approach 1:

The flexible coupling allows for controlled parameter changes in spacing while maintaining therapeutic effectiveness. The coupling can be adjusted to different lengths to accommodate various patient anatomies and treatment requirements, providing flexibility without compromising the essential spacing control needed for effective TTFields delivery.

Inventive Principle:

Principle #35Parameter changes

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 solution enhances the independence of patients by simplifying electrode array placement, reduces discomfort from cable tangling, and maintains effective treatment delivery with fewer cables, ensuring proper positioning and secure attachment of electrode arrays.

Implementation Method 1

a flexible coupling extending between, and coupled to, the first and second electrode array subassemblies. The flexible coupling provides a spacing, measured along a surface of the electrode array assembly, between the first and second electrode array subassemblies.

Methodology Applied

Scientific EffectFlexible coupling mechanism:

Implementation Method 2

Tumor Treating Fields (TTFields) therapy is a proven approach for treating tumors using alternating electric fields at frequencies between 100-500 KHz. When an AC voltage is applied between opposing electrode assemblies, an AC current is coupled through the electrode assemblies and into the subject's body.

Methodology Applied

Scientific EffectAlternating electric field generation: Electromagnetic Induction

Data Source

PatentUS20250001162A1Apparatus Having Electrode Array Subassemblies Coupled Together By A Flexible Coupling

Publication Date: 2025.01.02 NOVOCURE GMBH

AI summary

An electrode array assembly for providing tumor-treating fields includes first and second electrode array subassemblies, each of the first and second electrode array subassemblies including at least one electrode. The electrode array assembly further includes a flexible coupling extending between, and coupled to, the first and second electrode array subassemblies. The flexible coupling provides a spacing, measured along a surface of the electrode array assembly, between the first and second electrode array subassemblies.