Flexible RF Applicator for Fat Reduction

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Solution Overview

Problem

Existing electromagnetic applicators for fat reduction using high-frequency waves face challenges with complex setup and adjustment due to varying body shapes, require precise electrode positioning, and are uncomfortable for patients due to limited mobility during treatment.

Innovation Solution

A flexible applicator with integrated electrodes and counter electrodes housed in a base body, featuring spacers and air channels for active airflow, allowing adaptation to body shape and preventing overheating while enabling patient mobility.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If electrodes are housed in separate base bodies requiring independent positioning, then the applicator can treat various body regions, but the setup and adjustment time increases significantly

Engineering Contradiction:
Improvetreatment of various body regionsVSAvoidsetup and adjustment time
Core Design Contradiction:
Adaptability or versatilityVSLoss of time

Solution Approach 1:

The patent combines two separate electrodes and their base bodies into a single integrated applicator unit. The first and second electrodes are mounted on a common base body, eliminating the need for separate positioning operations. This merging reduces setup time while maintaining the ability to treat various body regions through the unified structure.

Inventive Principle:
Principle #5Merging (Combining)

Solution Approach 2:

The base body is designed to be flexible rather than rigid, allowing it to adapt dynamically to different body shapes and contours. This flexibility enables the applicator to maintain proper electrode positioning across various body regions without requiring complex mechanical adjustments, thereby reducing setup time while preserving versatility.

Inventive Principle:
Principle #15Dynamics

2Ease of operation

If electrodes are positioned at a distance from the body surface for contactless treatment, then patient comfort improves, but aligning and adjusting the electrodes becomes complex

Engineering Contradiction:
Improvepatient comfortVSAvoidelectrode alignment and adjustment
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The base body is constructed as a flexible structure that can conform to the body surface contour. This flexibility allows the electrodes to maintain an optimal distance from the body without requiring complex mechanical adjustment mechanisms. The flexible base body adapts to different body shapes automatically, simplifying the alignment process while preserving patient comfort.

Inventive Principle:
Principle #30Flexible shells and thin films

3Manufacturing precision

If the applicator is fixed in position relative to the patient, then treatment precision is maintained, but patient mobility is restricted

Engineering Contradiction:
Improvetreatment precisionVSAvoidpatient mobility
Core Design Contradiction:
Manufacturing precisionVSEase of operation

Solution Approach 1:

The flexible base body enables the applicator to move with the patient's body rather than requiring the patient to remain completely still. The flexibility allows the applicator to maintain proper contact and electrode positioning even when the patient moves to some extent, thereby preserving treatment precision while improving patient comfort and mobility during treatment.

Inventive Principle:
Principle #15Dynamics

4Measurement precision

If multiple separate components are used for electrode positioning, then precise distance control is achieved, but the applicator structure becomes complex

Engineering Contradiction:
Improveelectrode distance controlVSAvoidapplicator structure
Core Design Contradiction:
Measurement precisionVSDevice complexity

Solution Approach 1:

The patent integrates the positioning function directly into the flexible base body structure itself, rather than using separate positioning components. The base body's flexible nature inherently maintains proper electrode spacing and orientation, eliminating the need for additional mechanical positioning devices and simplifying the overall structure while preserving measurement precision.

Inventive Principle:
Principle #5Merging (Combining)

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

The applicator simplifies setup, ensures consistent treatment efficacy by maintaining electrode distance, provides active cooling, and enhances patient comfort by allowing movement during treatment, reducing skin overheating and perspiration.

Implementation Method 1

The applicator is particularly suitable for use in a device for fat reduction, e.g., by temperature-induced cell apoptosis, wherein the heating of the adipose tissue is achieved by means of a high-frequency electromagnetic field applied by the applicator

Methodology Applied
Scientific EffectDielectric heating: Dielectric Heating

Implementation Method 2

the applicator has channels for supplying and/or removing air, and wherein the applicator has several openings on the side facing the body that are fluid-connected to the channels

Methodology Applied
Scientific EffectConvection: Convection

Data Source

PatentEP3821840B1Applicator for applying electromagnetic field to tissue
Publication Date: 2026.03.18 GBO MEDIZINTECHN AG
  • EP3821840B1 patent drawingFigure 1~3
  • EP3821840B1 patent drawingFigure 4~5
  • EP3821840B1 patent drawingFigure 6~7

AI summary

The present invention relates to an applicator (1) for applying an electromagnetic field to body tissue, in particular to subcutaneous adipose tissue. The applied electromagnetic field is in particular high-frequency waves (RF waves). The applicator (1) has at least one electrode and at least one counter electrode, as well as a flexible base body. The at least one electrode and the at least one counter electrode are mounted in the base body. The applicator (1) has several spacers (6) on a side (5) facing the body. The applicator (1) has channels (7) for supplying and/or removing air, wherein the applicator (1) has several openings on the side (5) facing the body that are connected to the channels (7) by fluid.