Fluid Exchange Electrode for Biofilm Treatment Duration and Cooling
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Solution Overview
Problem
Existing electrodes for treating bacterial biofilms on metal implants face limitations in treatment duration due to acidic byproduct buildup and inadequate thermal regulation, posing risks to patient safety.
Innovation Solution
A multi-layered electrode design with a conductive electrode material layer, ionically conducting assembly, and electrolytic fluid circulation system to continuously remove acidic byproducts and regulate temperature, ensuring prolonged and safe treatment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If DC voltage stimulation is applied to remove bacterial biofilms from metal implants, then treatment efficacy is improved, but acidic byproduct buildup occurs which limits treatment duration and poses safety risks
Solution Approach 1:
The patent extracts and removes the harmful acidic byproducts generated during DC voltage stimulation by introducing a fluid circulation system. The electrolytic solution flows through channels in the electrode, carrying away acidic byproducts from the treatment site, thereby preventing buildup and enabling extended treatment durations while maintaining safety.
Solution Approach 2:
The patent introduces an electrolytic solution as an intermediary medium between the electrode and the patient's skin. This solution serves multiple functions: it facilitates ionic conduction for effective treatment, absorbs acidic byproducts, and provides thermal regulation. The intermediary solution decouples the harmful effects from the beneficial therapeutic action.
2Reliability
If DC voltage stimulation is applied to treat bacterial biofilms, then treatment efficacy is improved, but thermal regulation becomes inadequate which compromises patient safety
Solution Approach 1:
The electrolytic solution acts as a thermal intermediary, absorbing excess heat generated during DC voltage stimulation and preventing it from accumulating at the skin-electrode interface. The flowing solution continuously carries away thermal energy, providing active cooling while maintaining the electrical stimulation needed for effective treatment.
Solution Approach 2:
The patent employs a hydraulic system (fluid circulation) to achieve thermal regulation. By pumping electrolytic solution through channels in the electrode, the system uses fluid flow to actively manage temperature, transitioning from passive thermal management to active hydraulic cooling that maintains patient safety during extended treatments.
3Device complexity
If traditional electrode design is used, then device simplicity is maintained, but treatment duration is limited due to acidic byproduct accumulation
Solution Approach 1:
The patent segments the electrode structure into distinct functional zones: conductive layers for electrical stimulation, fluid channels for byproduct removal, and skin-contact layers for safety. This segmentation allows each component to perform its specific function efficiently, with the fluid channels integrated within the electrode body to provide continuous byproduct removal without requiring external complex systems.
Solution Approach 2:
The electrolytic solution serves multiple functions simultaneously: it conducts electricity for effective biofilm removal, absorbs acidic byproducts to extend treatment duration, and provides thermal regulation for patient safety. This multi-functionality allows a single component to address multiple limitations of traditional electrodes, reducing the need for separate complex systems.
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 electrode design significantly extends treatment duration while maintaining safety and efficacy by preventing skin interaction with acidic byproducts and providing thermal regulation, enhancing patient safety and treatment consistency.
Implementation Method 1
a source of electrolytic fluid is coupled to the counter electrode and configured to permit a volume of electrolytic fluid to flow through the electrode body
Implementation Method 2
an ionically conducting assembly configured to directly contact the skin of a patient
Implementation Method 3
configured to permit a volume of electrolytic fluid to flow through the electrode body
Data Source
AI summary
A fluid exchange electrode is defined by a multi-layered electrode body including a conductive electrode material layer disposed in an electrode body and an ionically conducting assembly that interfaces with the skin of a patient. A source of electrolytic fluid is coupled to an inflow tube and configured to permit a volume of electrolytic fluid to be circulated through the electrode body to increase treatment duration and overall electrode life in which the temperature of the cycled electrolytic fluid can be regulated. The cycled electrolytic fluid can be disposed of or preferably recirculated via a return or outflow tube to the source of electrolytic fluid. The herein described fluid exchange electrode can be used as part of a treatment system that applies a DC voltage in order to remove bacteria from a metal surgical implant.