Integrated Negative Pressure Wound Dressing With Fluid-Protected Electronics
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Solution Overview
Problem
Existing negative pressure wound therapy (NPWT) systems face challenges with remote negative pressure sources that are cumbersome, difficult to position comfortably, and prone to wound exudate absorption, making it difficult to incorporate electronic components conveniently.
Innovation Solution
Incorporating a negative pressure source and electronic components into a wound dressing as an integral structure, with a flexible film enclosure and porous windows to prevent fluid ingress, and using absorbent layers for fluid communication and protection.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a remote negative pressure source is used, then the NPWT system can function, but the system becomes cumbersome and difficult to position comfortably
Solution Approach 1:
The patent combines the negative pressure source and electronic components directly into the wound dressing structure, eliminating the need for separate remote pumping devices and tubing. This integration merges previously separate components into a unified system that is easier to position and operate while maintaining therapeutic function.
Solution Approach 2:
The patent transitions from a distributed system (remote pump connected via tubing) to a compact integrated unit by repositioning components into the two-dimensional plane of the dressing itself, utilizing the dressing's structural space to house electronic components and pressure generation elements.
2Ease of operation
If electronic components are incorporated into the dressing, then the system becomes more convenient, but wound exudate may damage the electronics
Solution Approach 1:
The patent employs a flexible impermeable membrane or coating to encapsulate electronic components within the dressing structure. This thin film barrier protects sensitive electronics from wound exudate while maintaining the flexibility and conformability needed for comfortable wound application.
Solution Approach 2:
The patent introduces an intermediate protective layer (impermeable membrane or hydrophobic coating) between the electronic components and the wound environment. This intermediary barrier allows the electronics to remain integrated in the dressing while preventing direct contact with damaging fluids.
3Ease of operation
If the negative pressure source is integrated into the dressing, then the system is more convenient, but the dressing structure becomes more complex
Solution Approach 1:
The patent designs the wound dressing to serve multiple functions simultaneously: the dressing layers provide wound coverage and protection, while integrated components provide negative pressure generation, fluid management, and electronic control. This multi-functionality consolidates what would otherwise require separate devices into a single unified system.
Solution Approach 2:
The patent merges the negative pressure source, electronic components, and dressing materials into a single integrated structure, eliminating the need for separate remote pumping devices and connecting tubing, thereby simplifying overall system operation despite increased internal dressing complexity.
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
Provides a comfortable and convenient NPWT system with integrated electronics, effectively managing wound exudate and maintaining negative pressure, enhancing wound healing by facilitating granulation tissue formation and fluid removal.
Implementation Method 1
a window comprising a porous material, wherein the electronics unit is enclosed within the flexible film and the plate
Implementation Method 2
The window can comprise a hydrophobic material configured to prevent fluid from entering the electronics assembly
Implementation Method 3
Negative pressure wound therapy (NPWT) systems commonly involve placing a cover that is impermeable or semi-permeable to fluids over the wound, using various means to seal the cover to the tissue of the patient surrounding the wound, and connecting a source of negative pressure (such as a vacuum pump) to the cover in a manner so that negative pressure is created and maintained under the cover
Implementation Method 4
at least one absorbent layer over the wound contact layer
Data Source
AI summary
Disclosed herein are embodiments of a wound treatment apparatus with electronic components integrated within a wound dressing. In some embodiments, a wound dressing apparatus can comprise a wound dressing. The wound dressing can comprise an absorbent material, an electronics unit comprising a negative pressure source, the electronics unit integrated within the wound dressing and at least partially encapsulated by a flexible film. The flexible film can comprise a window or aperture configured to permit fluid communication between the absorbent material and the negative pressure source. In some embodiments, a wound dressing apparatus can comprise a wound contact layer, an absorbent layer over the wound contact layer, the absorbent layer comprising one or more apertures, a cover layer configured to cover and form a seal over the wound contact layer and the absorbent layer, and an electronics assembly comprising a negative pressure source. A portion of the cover layer overlying the one or more apertures in the absorbent layer can be configured to be compressed within the aperture in the absorbent layer when negative pressure is applied to the wound dressing apparatus. The compressed cover layer can indicate a level of negative pressure below the cover layer. In some embodiments, the wound dressing apparatus can comprise an indicator material layer and a cover layer configured to cover and form a seal over the wound contact layer and the indicator material layer. The indicator material layer can be configured to protrude relative to a surrounding surface of an upper surface of the wound dressing apparatus when negative pressure is applied to the wound dressing apparatus and the protruding indicator material layer indicates a level of negative pressure below the cover layer.