Electrode Array Firing Control for Heat-Stable Tumor Treating Fields

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Existing TTF systems face inefficiencies due to fixed array configurations that deliver therapy from limited angles, leading to incomplete tumor reduction and frequent shutdowns from heat buildup, reducing therapy efficacy.

Innovation Solution

The system optimizes electrode array placement and firing sequences using temperature analysis to introduce Neutral Non Tumor Treating Fields (NNTTFs) and Redirected Neutral Tumor Treating Fields (RNTTFs), dynamically adjusting delivery angles and duty cycles to manage heat and enhance tumor treatment efficacy.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Productivity

If TTF intensity is increased to kill more cancer cells, then tumor reduction efficacy is improved, but heat buildup increases causing system shutdowns

Engineering Contradiction:

Improvetumor reduction efficacyVSAvoidarray temperature

Core Design Contradiction:

ProductivityVSTemperature

Solution Approach 1:

The system performs temperature analysis and introduces neutral non-tumor-treating field (NNTTF) firings and redirected neutral tumor treating field (RNTTF) firings before heat buildup becomes problematic. This preemptive approach manages thermal load before it causes shutdowns, allowing sustained high-intensity therapy to improve tumor reduction efficacy

Inventive Principle:

Principle #10Preliminary action

2Device complexity

If fixed array configurations are used to deliver TTF therapy, then device complexity is reduced, but tumor reduction completeness deteriorates due to limited delivery angles

Engineering Contradiction:

Improvearray configurationVSAvoidtumor reduction completeness

Core Design Contradiction:

Device complexityVSProductivity

Solution Approach 1:

The system transitions from fixed array configurations to dynamic configurations where electrode arrays can be repositioned and reconfigured. This allows delivery of TTF therapy from multiple angles and orientations, improving dielectrophoresis effectiveness and tumor reduction completeness while maintaining manageable device complexity through programmable control

Inventive Principle:

Principle #15Dynamics

Solution Approach 2:

The system adds spatial dimensionality by enabling electrode arrays to deliver therapy from multiple angles and orientations around the tumor. This multi-directional approach ensures comprehensive tumor coverage and maximizes dielectrophoresis effects on cancer cells dividing in random positions and orientations

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Reliability

If reactive heat management shutdowns are implemented when temperature reaches threshold, then safety is maintained, but therapy delivery time is reduced to 39% of wear time

Engineering Contradiction:

ImprovesafetyVSAvoidtherapy delivery time

Core Design Contradiction:

ReliabilityVSDuration of action of moving object

Solution Approach 1:

The system performs temperature analysis and introduces NNTTF and RNTTF firings preemptively before temperature reaches shutdown thresholds. This prevents reactive shutdowns while maintaining safety, allowing continuous therapy delivery and improving the duration of effective treatment

Inventive Principle:

Principle #10Preliminary action

Solution Approach 2:

The system implements continuous temperature monitoring with feedback control that adjusts firing configurations in real-time. This allows the system to maintain safe operating temperatures while maximizing therapy delivery time by dynamically adjusting duty cycles and introducing neutral firings only when needed

Inventive Principle:

Principle #23Feedback

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 approach ensures consistent tumor treatment by preventing heat buildup, allowing for increased angles of delivery and reduced duty cycles, thereby maintaining therapy efficacy without shutdowns.

Implementation Method 1

TTFs act to disrupt a cancer cell's mitotic process and cytokinesis by manipulating the cell's polarizable intracellular constituents, namely tubulins that form mitotic spindles

Methodology Applied

Scientific EffectDielectric heating: Dielectric Heating

Implementation Method 2

tubulin molecules become positively charged on one side and negatively charged on the other side. Tubulin form mitotic spindles by connecting to each other positive to negative forming chains. TTFs interrupt mitotic spindle microtubule assembly by interfering with the electric bonds between tubulin molecules

Methodology Applied

Scientific EffectDipole moment alignment: Polarisation

Implementation Method 3

The problem that intensity brings to successful TTF therapy is heat management. Prior art reacts to rising temperatures caused by increased intensity by shutting down the entire TTF system

Methodology Applied

Scientific EffectJoule heating: Joule Heating

Data Source

PatentUS12496443B2Apparatus and method for improving electric field therapy to reduce solid tumors

Publication Date: 2025.12.16 LIFEBRIDGE INNOVATIONS PBC

AI summary

A method of treating tumors by the delivery of tumor treating electric fields to a patient. The method including the steps of placing an electrode array on the patient; running a temperature analysis mode of the electrode array to provide a temperature analysis; determining which subarrays of the electrode array have neutral non tumor treating field firings inserted into a firing configuration based on the temperature analysis; and treating the patient using the firing configuration to deliver tumor treating fields to the patient.