Elastic Compression Envelope for Tissue-Specific Deformation Control
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Solution Overview
Problem
Current compression garments fail to effectively manage the deformation of living biological tissues due to inconsistencies in pressure distribution and material properties, leading to discomfort and potential harm, as they do not account for the varying behaviors of different tissue types under compression.
Innovation Solution
A method for designing an elastic compression envelope using knitting with elastic weft threads that provides circumferential and longitudinal tension, with specific sections of long and short elongation to optimize the behavior of soft and hard tissues, respectively, by adapting to individual morphotypes and anatomical zones.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If uniform compression is applied to the body, then the compression force is simplified, but the varying deformation needs of different tissue types (soft vs. hard) are not met
Solution Approach 1:
The compression garment is divided into multiple zones with different elastic properties: soft zones with high elongation for deformable tissues and hard zones with low elongation for rigid tissues. This segmentation allows each zone to independently adapt to the specific deformation characteristics of the underlying tissue type.
Solution Approach 2:
Different regions of the garment are assigned different material properties (elasticity, rigidity) according to the local tissue characteristics. Soft zones are placed over areas with deformable tissues while hard zones are positioned over areas with rigid tissues, creating local quality variation to match tissue-specific requirements.
2Ease of operation
If the compression envelope is made highly elastic to accommodate body movements, then comfort is improved, but the ability to provide stable support to rigid tissues is reduced
Solution Approach 1:
The garment structure is segmented into elastic zones for comfort and rigid zones for support stability. The elastic zones accommodate body movements and deformations while the rigid zones maintain stable support for rigid tissues, allowing both comfort and reliability to coexist in different regions.
Solution Approach 2:
The elastic properties are varied locally across the garment: high elasticity in zones contacting soft tissues for comfort and movement accommodation, and low elasticity (high rigidity) in zones contacting rigid tissues for stable support. This local quality differentiation resolves the contradiction between comfort and reliability.
3Ease of manufacture
If the compression garment uses uniform material properties throughout, then manufacturing is simplified, but the ability to optimize deformation control for different tissue types is lost
Solution Approach 1:
The manufacturing process is segmented into distinct steps for creating zones with different elastic properties. This includes separate knitting or weaving processes for soft and hard zones, or post-manufacturing techniques to create rigid zones from elastic base material. The segmentation enables precise control of deformation characteristics in each zone.
Solution Approach 2:
The garment utilizes composite construction combining materials with different elastic properties. This may involve layering elastic and rigid materials, or using composite yarns that integrate both soft and hard characteristics, allowing precise deformation control while maintaining manufacturability through established composite material techniques.
4Reliability
If the compression force is increased to improve therapeutic effect, then treatment efficacy is enhanced, but the risk of deleterious effects on sensitive tissues increases
Solution Approach 1:
The compression force is locally adjusted according to tissue sensitivity: higher compression in zones with robust tissues that can tolerate greater force for enhanced therapeutic effect, and lower compression in zones with sensitive tissues to avoid damage. This local quality differentiation allows effective treatment while minimizing harmful effects.
Solution Approach 2:
The compression garment is segmented into high-compression zones and low-compression zones. The high-compression zones are positioned over tissues that benefit from stronger compression for therapeutic effect, while low-compression zones are positioned over sensitive areas to prevent damage, thereby balancing efficacy and safety.
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 optimizes the deformation of biological tissues, controlling pressure transmission and avoiding deleterious effects by tailoring the textile properties to the specific characteristics of soft and hard tissues, improving physiological behavior without causing harm.
Implementation Method 1
an elastic envelope produced by knitting with elastic weft threads providing circumferential and longitudinal tension on the constrained living body
Data Source
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AI summary
The invention relates to determination of the characteristics of a textile envelope 7 that optimizes the deformation of the living biological tissues (TBV), both soft Z2 and hard Z1, depending on the morphology and the needs of a treatment. The method comprises A) a phase of determination of a reference system composed of tables which, for several human morphotypes, for several parts of human bodies and for several types of biological tissues, give the minimum and maximum values of the pressures that can be applied to this part of the human body by a textile envelope 7, B) a phase of adaptation of the envelope 7 to the corrective needs, which phase consists in defining the characteristics of the absorbent masses, both soft Z2 and hard Z1, and C) a phase of determination of the characteristics of manufacture of the envelope 7, which phase consists in determining, on the basis of the reference system, the subject and the desired corrective action, the tension of the knitted filaments of the envelope 7 and the position of the zones of the envelope 7 that provide a long extension 7a, coming over zones Z1 of the hard living biological tissues (TBV), and those 7b that provide a short extension, coming over the zones Z2 of the soft living biological tissues (TBV), in order to optimize the behaviour of these living biological tissues (TBV).