Self-Dispensing Curved Electrodes for Stable Skin Contact
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Solution Overview
Problem
Traditional electrode application requires manual alignment and dispensing of conductive material, which is inefficient and necessitates technician assistance, especially for unseen body parts, and results in misalignment and potential skin puncture due to rigid contact.
Innovation Solution
Curved hollow electrodes that store conductive liquid and automatically dispense when contacting the skin, ceasing dispensing upon removal, featuring a resilient and deformable design to maintain consistent skin contact and prevent puncture.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If manual alignment and dispensing of conductive material is used, then the electrode can be applied to the skin, but technician assistance is required and the process is inefficient
Solution Approach 1:
The electrode is designed to automatically dispense conductive material when it contacts the skin, eliminating the need for manual alignment and dispensing by a technician. The electrode serves itself by detecting skin contact and releasing the conductive material accordingly, enabling self-application.
Solution Approach 2:
The conductive material is pre-loaded into the electrode housing before application. This preliminary preparation allows the electrode to immediately dispense the material upon skin contact without requiring separate manual dispensing steps, reducing application time and enabling self-application.
2Reliability
If rigid contact is used to ensure skin contact, then the electrode maintains stable connection, but skin puncture may occur
Solution Approach 1:
The electrode transitions from a rigid state during storage and application to a compliant state during skin contact. The housing material or structure changes its mechanical properties upon contact, allowing it to adapt to skin contours and distribute pressure evenly, maintaining connection stability while preventing skin puncture.
Solution Approach 2:
The electrode housing is designed with inherent compliance or cushioning properties that activate upon skin contact. This pre-engineered compliance acts as a cushion between the electrode and skin, distributing contact forces to prevent puncture while maintaining reliable electrical connection.
3Adaptability or versatility
If the electrode is removed and re-applied, then the user can temporarily take off the electrode, but the whole process must be repeated including alignment and dispensing
Solution Approach 1:
The electrode automatically performs the dispensing function upon skin contact without requiring manual intervention. This self-service capability means that when the user re-applies the electrode after temporary removal, the system automatically repeats the dispensing action, eliminating the need to manually realign and re-dispense conductive material.
4Measurement precision
If manual visual alignment is used to reduce impedance, then the electrode can be properly positioned, but unseen body parts cannot be self-applied
Solution Approach 1:
The electrode eliminates the need for visual alignment by automatically detecting skin contact through its compliance mechanism. When the electrode touches the skin, the contact itself triggers the dispensing of conductive material, ensuring proper positioning without requiring visual verification. This enables self-application even on unseen body parts.
Solution Approach 2:
The manual visual alignment process is replaced with a mechanical compliance-based alignment system. The electrode's compliant housing naturally conforms to the skin surface through mechanical deformation, automatically achieving proper alignment and contact without requiring visual guidance or manual positioning adjustments.
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
Enables self-application of electrodes without technician assistance, ensures aligned conductive material for efficient signal reception, and prevents skin puncture by adapting to user movement and pressure.
Implementation Method 1
a curved hollow tube configured to hold a flowable conductive material and a selective retention mechanism positioned on the curved hollow tube and configured to retain the flowable conductive material in the hollow tube unless a force is imparted on the curved hollow tube
Implementation Method 2
The self-dispensing electrodes can be resilient (e.g., spring like) in nature. This aspect enhances the self-dispensing nature of the electrodes. Recall that contact with the user's skin creates a force on the self-dispensing electrode that effects dispensing. This force can also change the shape (e.g., bend) of the self-dispensing electrode.
Data Source
AI summary
The description relates to self-dispensing electrodes. One example can include a curved hollow tube configured to hold a flowable conductive material and a selective retention mechanism positioned on the curved hollow tube and configured to retain the flowable conductive material in the hollow tube unless a force is imparted on the curved hollow tube.