Integrated Negative Pressure Source in Wound Dressing
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Solution Overview
Problem
Existing wound dressings for negative pressure wound therapy often require a remote negative pressure source, making them inconvenient to use and difficult to apply, especially on curved surfaces, and can be aesthetically unpleasing due to visible exudate.
Innovation Solution
Integration of a negative pressure source directly into the wound dressing, with layers such as a wound contact layer, spacer layers, and an absorbent layer, where the negative pressure source is positioned within recesses or chambers, and filters are used to manage fluid flow and protect electronic components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a remote negative pressure source is used, then the negative pressure function is provided, but the convenience and ease of application deteriorate due to tubing and remote placement requirements
Solution Approach 1:
The patent integrates the negative pressure source directly into the wound dressing structure, combining previously separate components (dressing and pump) into a single unified device. This eliminates tubing connections and remote placement requirements, directly resolving the contradiction by improving ease of operation while managing device complexity through integration.
Solution Approach 2:
The negative pressure source is nested within recesses or chambers formed in the spacer layer or absorbent layer of the dressing. This nesting approach allows the pump to be embedded within the dressing structure itself, eliminating external tubing and components while maintaining the negative pressure function, thus improving convenience without excessive complexity.
2Reliability
If additional components are added to the wound dressing, then the negative pressure function is improved, but the ease of application deteriorates due to increased complexity
Solution Approach 1:
The dressing layers (wound contact layer, spacer layer, absorbent layer) and negative pressure source are merged into a single integrated assembly that is applied as one unit. This eliminates the need to separately apply multiple components, maintaining reliability while improving ease of application.
Solution Approach 2:
The negative pressure source is pre-positioned within recesses or chambers of the spacer or absorbent layer during manufacturing. This preliminary positioning ensures proper placement and functional reliability while simplifying the application process, as the components are already configured correctly before application to the wound.
3Ease of operation
If the negative pressure source is incorporated into the wound dressing, then the convenience is improved, but the reliability deteriorates due to moisture exposure to electronic components
Solution Approach 1:
The negative pressure source is nested within recesses or chambers formed in the spacer layer or absorbent layer, with the pump body positioned within these protective cavities. This nesting provides physical protection from moisture while maintaining integration, resolving the contradiction by protecting electronics while keeping the convenient integrated design.
Solution Approach 2:
The spacer layer and absorbent layer act as intermediary protective barriers between the wound moisture environment and the electronic components of the negative pressure source. These layers are positioned between the wound and the pump, providing protection while allowing the integrated convenient design to function.
4Quantity of substance
If absorbent layers are used to retain wound exudate, then the wound fluid management is improved, but the aesthetic appearance deteriorates due to visible exudate
Solution Approach 1:
The absorbent layer is nested within the integrated dressing structure with the pump positioned within recesses or chambers of the absorbent layer. This nesting contains the absorbent material and any exudate within the dressing boundaries, preventing visible exudate while maintaining effective wound fluid management through the absorbent layer's capacity.
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 integrated design provides a more convenient, easier-to-apply wound treatment option that effectively manages wound fluid and reduces the visibility of exudate, enhancing user experience and wound healing by maintaining a controlled negative pressure environment.
Implementation Method 1
a negative pressure source configured to be in fluid communication with the wound, the negative pressure source configured to draw wound fluid through the one or more spacer layers into the absorbent layer
Data Source
AI summary
Disclosed embodiments relate to apparatuses and methods for wound treatment. In certain embodiments, a negative pressure wound therapy apparatus includes one or more electronic components configured to be incorporated into layers of the wound dressing or integrated on top of the wound dressing. In some embodiments, a negative pressure source is incorporated into the wound dressing. The negative pressure source can be sealed between two moisture vapor permeable cover layers or enclosed in a moisture vapor permeable pouch, and may be received in a recess of an absorbent layer or spacer layer of a wound dressing apparatus.