Dual-Fluid Wound Irrigation With Ionically Charged Antimicrobial Fluid
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Solution Overview
Problem
Surgical sites, wounds, and implanted medical devices are prone to bacterial infections due to inoculation or colonization, which can spread and cause tissue damage, and existing antimicrobial solutions often lack persistent activity or are toxic.
Innovation Solution
A method involving ionically charged fluids, formed by mixing zinc or silver ions with chlorite ions, is used to increase the oxidation-reduction potential of wounds, providing persistent antimicrobial activity and preventing bacterial growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If traditional antimicrobial solutions are used to prevent bacterial infections, then immediate antimicrobial activity is achieved, but persistent antimicrobial activity is lacking and toxicity may occur
Solution Approach 1:
The system pre-mixes ions (such as zinc, copper, or silver) and oxidation-reduction potential increasing compounds (such as chlorite) in separate compartments before use. When activated at the wound site, these components generate ionically charged fluid with elevated oxidation-reduction potential that provides persistent antimicrobial activity without immediate toxicity, allowing preventive action before bacterial colonization becomes established
Solution Approach 2:
The invention changes the oxidation-reduction potential parameter of the wound environment by introducing compounds that increase this parameter. This parameter change creates an unfavorable environment for bacterial growth while maintaining biocompatibility, thereby achieving persistent antimicrobial effect without the toxicity associated with traditional antimicrobial agents
2Reliability
If wound irrigation is performed to prevent infection, then bacterial colonization is reduced, but the irrigant must remain in the wound to provide persistent activity which complicates the irrigation system
Solution Approach 1:
The irrigation system is divided into separate compartments containing different functional components (ions in one compartment, oxidation-reduction potential increasing compounds in another). This segmentation allows each component to be optimized independently while simplifying storage and handling, as the components can be mixed at the point of use rather than requiring complex delivery systems to maintain persistent activity
Solution Approach 2:
The ionically charged fluid acts as an intermediary that transfers the antimicrobial effect to the wound environment. By mixing the precursor components in a fluid charging portion and applying this charged fluid to the wound, the system achieves persistent antimicrobial activity without requiring complex delivery mechanisms, as the chemical reaction occurs in situ
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 ionically charged fluids effectively inhibit bacterial metabolism and biofilm formation, offering long-lasting antimicrobial protection against infections in surgical sites and wounds.
Implementation Method 1
mixing the first fluid with the second fluid in a fluid charging portion of the container to form an ionically charged or ionized or activated fluid
Implementation Method 2
applying the ionically charged fluid to the wound to increase antimicrobial activity at the wound
Data Source
AI summary
A wound irrigation system includes a first fluid including an ion rich compound having free available ions; and a second fluid including an oxidation-reduction potential increasing compound, the second fluid housed separately from the first fluid. Mixing the first and second fluids in a charging area forms an ionically charged fluid with an oxidation-reduction potential higher than a wound site oxidation-potential. The ionically charged fluid increases antimicrobial activity of the wound upon application.