Reduced Pressure Dressing Reactor Using Selective Electrolyte Delivery
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Solution Overview
Problem
Existing wound therapy devices lack efficient mechanisms for administering reduced pressure therapy without the need for high vacuum sources and hermetically sealed foil packets to initiate chemical reactions, particularly for skin treatments and restorative purposes.
Innovation Solution
A dressing system with a reactor that includes a reducing agent and electrolyte solution, where the electrolyte is selectively delivered to react with gases in an enclosed volume to create reduced pressure, eliminating the need for hermetically sealed packets and mechanical pumps.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a hermetically sealed foil packet is used to isolate the substrate impregnated with reducing agent and electrolyte solution from air, then the chemical reaction can be controlled and activated only when needed, but the device complexity and manufacturing difficulty increase
Solution Approach 1:
The device is divided into separate functional components: a dressing portion with the substrate impregnated with reducing agent, and a separate electrolyte solution reservoir. This segmentation eliminates the need for hermetic sealing while maintaining controlled reaction activation, as the electrolyte solution can be selectively delivered to the substrate only when reduced pressure therapy is required.
Solution Approach 2:
The substrate is pre-impregnated with the reducing agent during manufacturing, preparing it in advance for the chemical reaction. The electrolyte solution is separately prepared and stored, ready to be delivered to the substrate when needed. This preliminary preparation allows the system to avoid complex hermetic sealing while ensuring controlled activation.
2Reliability
If a mechanical vacuum pump is used to apply reduced pressure, then reliable pressure control is achieved, but the device complexity and power requirements increase
Solution Approach 1:
The mechanical vacuum pump system is replaced with a chemical reaction-based pressure generation system. The reducing agent reacts with atmospheric gases (oxygen, carbon dioxide) consumed by bacteria in the wound, creating a pressure differential that delivers reduced pressure therapy. This substitution eliminates mechanical moving parts, reduces device complexity, and removes power requirements while maintaining reliable pressure control.
Solution Approach 2:
The system changes the method of pressure generation from mechanical (pump-driven) to chemical (reaction-driven). By controlling the chemical reaction between the reducing agent and atmospheric gases, the system achieves the desired pressure parameters without requiring mechanical components or external power sources.
3Reliability
If high vacuum pressure is applied for wound therapy, then effective wound healing is achieved, but the risk of tissue damage and patient discomfort increases
Solution Approach 1:
The system changes the pressure generation mechanism from mechanical high-vacuum pumping to controlled chemical reaction. This allows for gentler, more gradual pressure reduction that is effective for wound healing while minimizing the risk of tissue damage and patient discomfort associated with high vacuum pressures.
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
Enables effective and controlled delivery of reduced pressure therapy by consuming atmospheric gases, ensuring consistent pressure reduction without leakage, suitable for various wound and skin treatment applications.
Implementation Method 1
The reactor is configured to react with a selected gas (e.g. nitrogen, oxygen, carbon dioxide) found in air. The reactor consumes the selected gas within the enclosed volume.
Implementation Method 2
The reactor includes a reducing agent and an electrolyte solution. The electrolyte solution is configured to be selectively delivered to the reducing agent
Data Source
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AI summary
A reduced pressure device includes a dressing and a reactor. The dressing covers a dressing site and defines an enclosed volume beneath the dressing and around the dressing site. The reactor is disposed with respect to the dressing so as to produce a reduced pressure beneath the dressing when activated. The reactor includes a reducing agent and an electrolyte solution. The electrolyte solution is configured to be selectively delivered to the reducing agent, and the reactor begins to react with at least one selected gas in the enclosed volume after the electrolyte solution is delivered to the reducing agent to consume the at least one selected gas within the enclosed volume.