Ionically Charged Wound Irrigation for Persistent Antimicrobial Activity
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Solution Overview
Problem
Surgical sites, wounds, and implanted medical devices are prone to bacterial infections due to inoculation or colonization, necessitating effective antimicrobial solutions with persistent activity to prevent and cure infections.
Innovation Solution
A method and system for wound irrigation using ionically charged fluids, combining zinc or silver ions with chlorite ions to create a charged compound that increases the oxidation-reduction potential, enhancing antimicrobial activity and preventing bacterial growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of stationary object
If conventional antimicrobial irrigants are used, then antimicrobial activity is provided, but persistent activity is not achieved
Solution Approach 1:
The patent changes the chemical parameters of the irrigant by combining zinc or silver ions with chlorite ions to create an ionically charged fluid with elevated oxidation-reduction potential. This parameter change enables persistent antimicrobial activity that lasts throughout the surgical procedure and beyond, resolving the contradiction between providing antimicrobial activity and achieving persistent protection.
Solution Approach 2:
The patent creates a composite antimicrobial solution by combining multiple active ingredients (zinc ions, silver ions, and chlorite ions) in a single irrigant formulation. This composite approach provides synergistic antimicrobial effects that maintain persistent activity, addressing the reliability issue of conventional single-component irrigants.
2Reliability
If ionically charged fluids are used, then antimicrobial activity is enhanced, but device complexity increases
Solution Approach 1:
The patent segments the antimicrobial agents into separate compartments within the irrigation system, with zinc or silver ions stored in one compartment and chlorite ions in another. These compartments are separated by a divider that allows the fluids to remain distinct until activation, reducing the complexity of handling and storage while maintaining enhanced antimicrobial effectiveness.
Solution Approach 2:
The patent performs preliminary preparation by pre-mixing zinc or silver ions with chlorite ions in separate compartments before the surgical procedure. The ionically charged fluid is ready for immediate use upon activation, eliminating the need for complex real-time mixing mechanisms and reducing overall system complexity while maintaining high antimicrobial effectiveness.
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 increase the oxidation-reduction potential at wound sites, inhibiting bacterial metabolism and biofilm formation, providing long-lasting antimicrobial protection against infections.
Implementation Method 1
combining zinc or silver ions with chlorite ions to create a charged compound that increases the oxidation-reduction potential, enhancing antimicrobial activity
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.