Custom Wound Dressing for Irregular Post-Breast Surgery Wounds
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Solution Overview
Problem
Current negative pressure wound therapy (NPWT) systems face challenges in effectively treating wounds with irregular shapes, particularly post-breast surgery wounds, due to the difficulty in applying standard wound dressings that provide uniform and full coverage.
Innovation Solution
A custom-designed wound dressing with an elongate portion and a bridging portion, configured to fit post-surgical breast wounds, featuring a wound contact layer, an absorbent layer, and a cover layer with a fluidic connector, allowing for the application of negative pressure and fluid management tailored to the specific anatomy.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a standard wound dressing is used for post-breast surgery wounds, then the dressing structure is simple and easy to manufacture, but the dressing cannot provide full coverage and uniform application of negative pressure due to the irregular shape of the wound
Solution Approach 1:
The wound dressing is divided into multiple functional layers (wound contact layer, absorbent layer, transmission layer, and cover layer), each performing a specific function. This segmentation allows the dressing to adapt to irregular wound shapes while maintaining structural organization and manufacturability.
Solution Approach 2:
The dressing incorporates an aperture in the cover layer positioned away from the wound contact layer, creating a localized region for fluidic connection. This local quality modification enables the dressing to accommodate the specific anatomical requirements of post-breast surgery wounds while maintaining overall structural simplicity.
2Productivity
If negative pressure is applied to promote wound healing, then wound healing is accelerated, but fluid accumulation and adverse cytokines/bacteria may worsen if not properly managed
Solution Approach 1:
The transmission layer is configured with porous structure that allows fluid to pass through from the wound contact layer to the cover layer, while the aperture in the cover layer provides a controlled pathway for fluid and gas exchange. This enables effective fluid management to prevent accumulation of harmful substances while maintaining negative pressure for accelerated healing.
Solution Approach 2:
The aperture in the cover layer acts as an intermediary structure that facilitates controlled fluid and gas exchange between the wound site and the external environment. This mediator enables the removal of adverse cytokines and bacteria through the negative pressure system while maintaining the therapeutic negative pressure environment.
3Reliability
If a cover layer is sealed over the wound to maintain negative pressure, then negative pressure is effectively maintained, but fluid and gas exchange with the external environment is restricted
Solution Approach 1:
The cover layer is designed with a localized aperture that creates a specific region for fluidic connection while the rest of the cover layer maintains its sealing function. This local modification allows the dressing to simultaneously achieve reliable negative pressure maintenance and necessary fluid-gas exchange for post-breast surgery wound treatment.
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 solution enables improved wound healing by ensuring consistent negative pressure application and fluid management across the wound site, enhancing the effectiveness of NPWT for post-breast surgery wounds.
Implementation Method 1
an absorbent layer and/or transmission layer
Implementation Method 2
absorbent layer configured to absorb wound exudate
Implementation Method 3
negative pressure wound therapy (NPWT) systems... 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
connecting a source of negative pressure (such as a vacuum pump) to the cover
Data Source
Figure 1A
Figure 1B
Figure 2A
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 wound dressings configured to be used to treat surgical wounds including post-breast surgery wounds. In some embodiments, a single negative pressure source can be used with one or more wound dressing to treat one or more wounds.