Conductive Ink Wearable Medical Device Skin Interface
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Solution Overview
Problem
The electrode-skin interface in medical devices affects the quality of electrical signals for heart monitoring and treatment, leading to reduced signal strength and potential discomfort due to impedance and hot-spots, especially with existing methods like conductive gels and adhesive electrodes.
Innovation Solution
The use of conductive ink applied to the skin at the electrode contact points to reduce skin impedance and improve electrical contact, allowing for better signal sensing and therapy delivery, including the application of conductive ink as tattoos or paint, which can be temporary or permanent, and utilizing magnetic materials for enhanced adhesion.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conductive gels and adhesive electrodes are used, then electrical contact between electrode and skin is achieved, but skin impedance increases and causes reduced signal strength and potential discomfort
Solution Approach 1:
The patent applies conductive ink as an intermediary substance between the electrode and skin surface. This conductive ink layer serves as a mediator that reduces skin impedance and improves electrical contact quality, thereby enhancing signal strength while reducing discomfort during extended wear
Solution Approach 2:
The patent changes the physical and chemical parameters of the skin-electrode interface by applying conductive ink with specific conductivity properties. This parameter change reduces the electrical impedance at the interface, improving signal quality and comfort for both monitoring and therapy applications
2Ease of operation
If electrodes are applied directly to skin, then monitoring and therapy functions are provided, but placement accuracy is reduced and wearability is limited
Solution Approach 1:
The patent applies conductive ink to the skin surface in advance before electrode placement. This preliminary action creates a pre-marked, conductive pathway that guides accurate electrode positioning and ensures optimal contact areas are prepared beforehand, improving both placement accuracy and overall system performance
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
This approach enhances the quality of electrical contact between the electrode and skin, reducing impedance and discomfort, while facilitating accurate electrode placement and extended wearability, thereby improving the effectiveness of heart monitoring and treatment devices.
Implementation Method 1
a conductive material applied to a patient's skin may be adapted to facilitate an improved electrical contact between the medical device system and the patient's skin
Implementation Method 2
utilizing magnetic materials for enhanced adhesion
Data Source
AI summary
Technologies and implementations related to utilizing conductive ink with medical device systems to facilitate electrical contact between an electrode and a person’s skin. The conductive ink may be applied in a variety of manners such as, but not limited to, permanent, semi-permanent, and/or temporary.