Customizable Foam Wound Liner for Irregular Shapes
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Solution Overview
Problem
Current wound treatment technologies face challenges such as tissue enmeshing and limited customization of foam inserts, leading to delayed healing, irritation, and increased risk of infection, particularly in complex and irregularly shaped wounds, due to the need for frequent dressing changes and difficulty in conforming to unique wound shapes.
Innovation Solution
A multi-solution system that forms a customizable amorphous gel or foam wound liner or insert, which can be poured, sprayed, or injected to conform to the wound shape, incorporating bioactive compounds and a modifiable porous fraction to reduce tissue enmeshing and enhance tissue growth, allowing for tailored application with or without pressure gradient therapy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If pre-formed foam inserts are used for wound treatment, then wound coverage is provided, but the inserts cannot conform to irregular wound shapes and require frequent dressing changes
Solution Approach 1:
The foam insert transforms from a pre-formed rigid structure to a moldable material that can be shaped to match irregular wound contours. The foam's physical state and porosity are modified to enable conformability while maintaining therapeutic function.
Solution Approach 2:
The foam insert is applied in a moldable state before finalizing the wound bed structure. By preparing the foam to conform to the wound shape during initial application, the need for subsequent adjustments and frequent dressing changes is eliminated.
2Productivity
If open-cell reticulated porous foam inserts are used with pressure gradients, then fluid egress and wound closure are accelerated, but tissue enmeshing occurs leading to irritation and delayed healing
Solution Approach 1:
The foam insert utilizes a controlled porous structure that allows fluid egress while preventing tissue enmeshing. The pore size and distribution are optimized to permit fluid passage without creating hooks or structures that can trap or irritate healing tissue.
Solution Approach 2:
Different regions of the foam insert have different properties - the surface layer may have smaller pores to prevent enmeshing while deeper layers have larger pores for fluid egress. This localized variation in pore structure addresses both fluid management and tissue protection requirements.
3Reliability
If frequent dressing changes are performed to manage wounds, then wound monitoring is possible, but healing time increases and risk of infection rises
Solution Approach 1:
The foam insert provides extended coverage and absorption capacity that exceeds the minimum required, allowing it to manage wound exudate and maintain the wound bed for longer periods between dressing changes. This reduces the frequency of interventions while maintaining effective monitoring.
4Manufacturing precision
If custom foam inserts are manufactured for each wound, then perfect fit is achieved, but manufacturing complexity and cost increase
Solution Approach 1:
The foam insert can be provided in modular segments or layers that can be easily assembled to match wound contours. This segmentation allows for customization without requiring complex manufacturing processes, as the modules can be configured to fit various wound shapes.
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 minimizes tissue enmeshing, reduces the frequency of dressing changes, and promotes healing by providing a customizable, mechanically robust dressing that conforms to the wound shape, enhancing tissue growth and fluid management, potentially eliminating the need for external fixators and reducing healing time.
Implementation Method 1
forming a gel or expanding foam that forms a wound liner, a wound filler, or a scaffold
Implementation Method 2
forming a gel or expanding foam that forms a wound liner, a wound filler, or a scaffold
Implementation Method 3
negative pressure wound therapy (NPWT). NPWT has demonstrated clinical efficacy by its ability to promote blood flow, improve the removal of fluid and edema
Implementation Method 4
Open-cell, reticulated porous foam inserts are commonly used with the application of pressure gradients (i.e. negative/vacuum pressure or positive pressure) as a means to accelerate wound closure and fluid egress
Implementation Method 5
support regenerative tissue engineering
Data Source
AI summary
A system for treating open wounds includes a foam material configured for pouring, spraying, injecting or spreading on a wound bed. The foam material can comprise a base component and a curing component, which can be pre-mixed before application, or mixed in situ as the components are being applied to the wound site. A third component can comprise a sacrificial porogen. Foam can be placed in the wound bed as a wound liner on the wound surfaces. An additional foam insulation can provide a foam filler partially contained by the wound liner and generally flush with a patient's epidermis. A method of treating open wounds includes the steps of applying the wound liner and filler components. An optional step comprises covering the wound liner with a semi-permeable (breathable) membrane and mounting inlet and outlet ports thereon for introducing healing compositions as input, and extracting wound exudates as output.