Electromagnetic Lung Ablation for Selective Tissue Heating
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Solution Overview
Problem
Existing methods for treating lung diseases like emphysema face challenges in precisely targeting diseased lung tissue without harming adjacent healthy tissue, particularly due to limitations in accessing and accurately guiding ablation devices within the lung.
Innovation Solution
The development of a medical thermal ablation apparatus that uses a plurality of electromagnetic signal applicators to deliver electromagnetic energy for differential heating of diseased and healthier lung tissues, with closed-loop control systems to regulate temperature and minimize heating of healthy tissues.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If an ablation device is inserted through the trachea and bronchi into the diseased area, then the diseased tissue can be heated, but only a small part of the lung is accessible and precise mapping and accurate guidance are required
Solution Approach 1:
The patent replaces the mechanical ablation device insertion approach with an electromagnetic field-based heating system. External electromagnetic applicators deliver energy through the chest wall to heat diseased lung tissue without requiring physical access through the trachea and bronchi, thereby eliminating the need for precise internal device positioning while still achieving targeted heating of diseased areas
Solution Approach 2:
The patent introduces electromagnetic fields as an intermediary to transfer energy to the diseased tissue. Instead of directly inserting a heating device into the lung, external electromagnetic applicators serve as mediators that deliver thermal energy through the chest wall and surrounding tissues to the target diseased areas, bypassing the need for direct mechanical access
2Temperature
If electromagnetic energy is applied to heat diseased lung tissue, then treatment efficacy is improved, but healthy surrounding tissue may also be heated excessively
Solution Approach 1:
The patent applies local quality by configuring electromagnetic applicators and their associated control systems to deliver energy selectively to specific regions of the lung. The system creates localized heating zones within the diseased tissue while maintaining different thermal conditions in surrounding healthy tissue, achieving spatially differentiated temperature control through multiple independently controllable applicators
Solution Approach 2:
The patent employs periodic action by alternately activating different electromagnetic applicators in a scanning or interleaved sequence. This periodic activation pattern allows certain tissue regions to be heated while others are allowed to cool, preventing excessive temperature buildup in any single location and enabling treatment of extensive diseased areas without overheating healthy tissue
3Device complexity
If a single ablation device is used to treat lung tissue, then the device structure is simple, but the treatment coverage is limited and productivity is reduced
Solution Approach 1:
The patent segments the treatment system into multiple independent electromagnetic applicators that can be distributed across different regions of the patient's body. Each applicator serves as an independent treatment unit, and their coordinated operation enables comprehensive coverage of the entire lung while maintaining relatively simple individual component designs, thereby increasing overall treatment productivity without excessive complexity
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 allows for effective heating of diseased lung tissues while maintaining healthy tissue temperatures below safe thresholds, thereby improving treatment efficacy and safety for conditions like emphysema.
Implementation Method 1
deliver electromagnetic energy to lung tissues for differential heating of diseased and healthier portions of the lung tissues
Implementation Method 2
employing electromagnetic fields to heat the diseased tissue
Implementation Method 3
employing electromagnetic fields to heat the diseased tissue
Data Source
AI summary
The invention may be applied to selectively heat a diseased area in the lung while minimizing heating to the healthy area and surrounding tissue. This can be done by exposing the lung to an electromagnetic field causing dielectric or eddy current heating. The invention is particularly useful for treating emphysema as the diseased areas in emphysema patients have reduced blood flow. The diseased area will heat up rapidly while the healthy tissue will be cooled by the blood flow. This is particularly effective for treating emphysema because of the low mass of the lungs and the high blood flow. To avoid heating of surrounding organs the direction of the electromagnetic energy may be switched in a way it always passes through lungs but only intermittently passes through adjacent organs.