Multi-layered Composite Wound Drainage Device
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Solution Overview
Problem
Existing wound treatment arrangements often result in unsatisfactory healing success due to inadequate drainage demands, which vary by wound type and change during negative pressure therapy.
Innovation Solution
A multi-layered composite drainage device with distinct material properties in each layer, allowing for fluid conductivity and customizable suction patterns to address varying wound demands.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a single-material drainage device is used, then the device structure is simple, but it cannot meet different drainage demands of various wounds and cannot adapt to changing wound conditions during therapy
Solution Approach 1:
The drainage device is divided into multiple functional layers: a first drainage layer with first outer boundary surface, a second drainage layer with second outer boundary surface, and optionally a third drainage layer. Each layer can be made of different materials with specific properties tailored to different drainage demands, allowing the device to adapt to various wound types and therapy stages while maintaining manageable structural complexity through modular design
Solution Approach 2:
The multi-layer drainage device combines different materials and structures in one device, enabling it to perform multiple functions: high adhesion for debridement, low adhesion for protecting sensitive organs, different pore sizes for various drainage needs, and customizable suction patterns. This universal design allows a single device to address diverse wound types and changing therapy requirements
2Productivity
If a drainage device with high adhesion is used, then wound debridement effect is improved, but damage to sensitive organs such as intestines, peritoneum, pleura and vessels increases
Solution Approach 1:
Different layers of the drainage device have different adhesion properties tailored to specific application needs. The first outer boundary surface can provide high adhesion for effective debridement when applied to appropriate wound surfaces, while the second outer boundary surface can provide low adhesion to protect sensitive organs. This local differentiation of material properties allows the device to achieve high debridement efficiency without causing damage to sensitive structures
3Reliability
If negative pressure therapy is applied to meet different drainage demands, then wound healing is improved, but the therapy becomes complex to manage
Solution Approach 1:
The drainage device incorporates multiple layers with different material parameters (pore sizes, adhesion properties, permeability) that can be selected and configured based on specific wound requirements and therapy stages. This allows the system to achieve reliable wound healing outcomes by optimizing material parameters for different drainage demands without requiring complex external control mechanisms, as the multi-layer structure itself provides the necessary adaptability
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 multi-layered composite drainage device enhances wound cleaning, reduces interstitial edema, improves blood circulation, and promotes granulation tissue growth, leading to improved therapeutic outcomes.
Implementation Method 1
a suction device (30), in particular a vacuum source, for generating a negative pressure in a region of at least one outer boundary surface of the drainage device
Implementation Method 2
wound secretions being suctioned away
Implementation Method 3
The first drainage layer comprises an open-pored foam, in particular polyurethane foam
Implementation Method 4
at least one of the outer boundary surfaces is equipped with an adhesive material (28)
Data Source
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AI summary
The invention relates to a wound treatment arrangement comprising a drainage device designed for draining fluids from a human or animal body, in particular from a wound, wherein the drainage device has a multilayer composite structure having two opposing boundary surfaces which are at least partially permeable to fluids and in particular extend approximately parallel to one another, one of which is formed at least in part by a first outer boundary surface of a first drainage layer having a first surface quality, said first outer boundary surface facing away from a boundary layer between two adjacent drainage layers, and the other of which is formed at least in part by a second outer boundary surface of a second drainage layer having a second surface quality different from the first surface quality, said second outer boundary surface facing away from a boundary layer between two adjacent drainage layers, wherein the drainage layers are preferably fluidically connected to one another.