Medical Textile Panel With Mechanical Force Multiplication

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Solution Overview

Problem

Existing medical devices with elastic textile panels struggle to provide a feeling of support and tightening equivalent to inelastic textiles, while also being cumbersome and requiring excessive force for effective extension.

Innovation Solution

A medical device featuring a textile panel with a woven structure comprising elastic and non-elastic chain threads, woven according to a 'no gauze' armor technique, which allows for significant traction on elastic threads to mimic rigid textile behavior under manual traction and mechanical tightening.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If an elastic textile panel is used that stretches under manual stress, then the device can be applied manually, but it does not provide a feeling of support and tightening equivalent to inelastic textiles

Engineering Contradiction:
Improvemanual applicationVSAvoidfeeling of support
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The patent changes the force parameter by introducing a mechanical multiplication device that amplifies manual force by a factor of 2 to 5, enabling the elastic textile to achieve tightening forces comparable to inelastic textiles while maintaining manual applicability

Inventive Principle:
Principle #35Parameter changes

Solution Approach 2:

The patent introduces a mechanical multiplication device as an intermediary between the user's manual force and the textile panel, transferring and amplifying the applied force to achieve the desired tightening effect

Inventive Principle:
Principle #24Intermediary (Mediator)

2Reliability

If a mechanical device that multiplies manual force is used with inelastic textile, then strong tightening is achieved, but the device becomes too complex and bulky

Engineering Contradiction:
Improvetightening strengthVSAvoidmechanical device complexity
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The patent changes the material parameter by using elastic textile with high elastic recovery (≥90%) instead of inelastic textile, allowing the textile itself to provide the tightening force when combined with amplified manual force, thereby simplifying the overall device

Inventive Principle:
Principle #35Parameter changes

3Manufacturing precision

If high force is applied to stretch elastic textile panel by 30%, then proper fit is achieved, but the application process becomes tedious and time-consuming

Engineering Contradiction:
Improvefit precisionVSAvoidapplication time
Core Design Contradiction:
Manufacturing precisionVSLoss of time

Solution Approach 1:

The mechanical multiplication device acts as an intermediary that reduces the time required to apply the necessary force for proper fit by amplifying manual force, making the application process faster and less tedious

Inventive Principle:
Principle #24Intermediary (Mediator)

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 device achieves an extension of at least 30% in the longitudinal direction with a force greater than or equal to 500 CN/cm, providing a strong feeling of support and comfort, while maintaining a compact and user-friendly design.

Implementation Method 1

at least one textile panel having elastic behavior in at least one direction, in particular capable of stretching by at least 30% of its initial length in said direction with an elastic recovery at least greater than or equal to 90% of the initial length which has been stretched

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

capable of being applied by means of a mechanical clamping device multiplying the manual application force

Methodology Applied
Scientific EffectMechanical Advantage: Mechanical Advantage

Data Source

PatentEP3393408B1Medical device for supporting at least one region of the body
Publication Date: 2025.04.23 THUASNE SA
  • EP3393408B1 patent drawingFigure 1
  • EP3393408B1 patent drawingFigure 2
  • EP3393408B1 patent drawingFigure 3

AI summary

The invention relates to a medical device (20, 21) for supporting at least one region of the body, comprising at least one textile panel (26, 27) having a longitudinal direction (L) and a transverse direction (T) arranged so as to encircle all or part of said region of the body to be supported. Said textile panel (26, 27) comprises a woven textile strip, or a plurality of woven textile strips (1, 28, 29) which are at least partially superimposed, said woven strip or said woven strips (28, 29) each having a warp direction (C) and a weft direction (t), and comprising weft threads (2), first, elastic warp threads (3), second, non-elastic warp threads (4), and third warp threads (5), said first warp threads (3) and said second warp threads (4) being woven in a leno weave, the second warp threads forming the doup threads. Furthermore, said textile panel (26, 27) is elastic in the longitudinal direction and has a force in the longitudinal direction (L), which is higher than, or equal to 500 cN/cm, in order to obtain an elongation equal to 30%.