Wound Dressing Electrode Array for Deep Tissue Stimulation
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Solution Overview
Problem
Current wound healing technologies face limitations in effectively accelerating wound healing due to inadequate penetration of electrical stimulation current into the wound tissue and lack of objective, non-invasive monitoring methods for chronic wound progression.
Innovation Solution
An electrode arrangement comprising impedance reference electrodes, a frame-like counter-electrode, and a stimulation electrode array with a bioadhesive affinity layer, capable of applying low-intensity direct current (LIDC) for stimulation and bioimpedance measurement, integrated into a wound dressing for enhanced wound healing and monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If conventional electrical stimulation is applied to the wound surface, then the wound healing is stimulated, but the electrical current does not penetrate deeply into the wound tissue
Solution Approach 1:
The patent introduces a conductive gel as an intermediary substance between the electrode and wound tissue. This gel serves as a mediator that facilitates deeper penetration of electrical current into the wound tissue by reducing electrical resistance at the interface, thereby resolving the contradiction between surface stimulation and deep tissue penetration.
Solution Approach 2:
The patent changes the electrical parameters by using low-intensity direct current (LIDC) with specific current densities (0.01-0.1 mA/cm²) and applies it through a conductive medium. This parameter modification allows the electrical stimulation to penetrate deeper into the tissue while maintaining effective healing stimulation, addressing both the healing rate and penetration depth requirements.
2Measurement precision
If visual inspection methods are used to monitor wound healing, then wound progression can be assessed, but the method is subjective and requires disturbing the wound
Solution Approach 1:
The patent replaces the mechanical visual inspection method with an electrical measurement system. By using electrical impedance spectroscopy to measure wound characteristics, the system provides objective, quantifiable data about wound healing progression without requiring physical disturbance or subjective visual assessment, thus resolving the contradiction between measurement precision and ease of operation.
Solution Approach 2:
The monitoring system allows the wound to be assessed in its natural state under the dressing without requiring removal or disturbance. The electrical measurements are taken through the intact dressing system, enabling the wound to serve itself for monitoring purposes while maintaining its healing environment, thereby achieving both objectivity and non-invasiveness.
3Adaptability or versatility
If multiple independent miniature galvanic cells are used for electrical stimulation, then the dressing size can be adjusted easily, but the current flow is not controllable in magnitude and direction
Solution Approach 1:
The patent employs a single programmable pulse generator that can function as a universal control unit for multiple electrode configurations. This single device can adjust current magnitude, direction, and duration while accommodating different dressing sizes and wound geometries, thereby providing both adaptability and controllability without increasing device complexity.
Solution Approach 2:
The patent implements dynamic control of electrical parameters through programmable pulse generators that can adjust current characteristics in real-time based on treatment requirements. This dynamic capability allows the system to adapt to different wound stages and configurations while maintaining precise control over current flow, resolving the contradiction between versatility and controllability.
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 deeper penetration of electrical stimulation current for improved wound healing and provides a non-invasive, objective method for monitoring wound progression, reducing subjectivity and discomfort, while promoting faster healing and reducing healthcare costs.
Implementation Method 1
a therapeutic approach which utilizes electrical stimulation of the wound via application of direct current should be beneficial
Implementation Method 2
a method for measuring wound healing and a wound dressing having an electrode arrangement... suited for applying LIDC type electrical stimulation current to the wound area and for bioimpedance measurement
Data Source
AI summary
The present invention relates to the field of electrotherapy and measuring by means of electric cur-rents for diagnostic purposes, and more particularly to an electrode arrangement for facilitating wound healing, a method for measuring wound healing and a wound dressing having an electrode arrangement. A wound dressing according is described which includes at least two impedance reference electrodes, a frame like counter-electrode and stimulation electrodes in a form of an array; and a bioadhesive affinity layer surrounding the stimulation electrodes; said wound dressing being suited for applying on top of the wound so that the stimulation electrode array is on the wound area, and that the at least two impedance reference electrodes and the frame like counter-electrode are suited for placing in contact with the healthy skin surrounding the wound area; which electrodes, are suited for applying LIDC type electrical stimulation current to the wound area and for bioimpedance measurement.