Polymer Holder With Elastic Cover For Biosignal Device
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Solution Overview
Problem
Existing electronic devices for measuring biosignals such as ECG and EEG face challenges in achieving reliable mechanical fixation and easy removal from their support structures.
Innovation Solution
A polymer holder with a hemispherical pocket and electrically conductive contact structure, featuring a mechanism for easy insertion and removal, including a piston and lever system for secure attachment and detachment, and an elastic cover for enhanced friction and suction force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a polymer holder with hemispherical pocket and elastic cover is used, then the attachment reliability and friction force are improved, but the device complexity increases due to additional components like piston and lever system
Solution Approach 1:
The biosignal processing device is nested within the hemispherical pocket of the polymer holder, with the elastic cover enveloping the device. This nested structure provides secure attachment through friction and suction forces while maintaining a compact integrated design that reduces overall system complexity despite the multiple functional components.
Solution Approach 2:
The elastic cover automatically generates friction and suction forces to secure the biosignal processing device in place without requiring additional active fastening mechanisms. The material's inherent elasticity provides the attachment force, eliminating the need for separate fasteners or complex locking systems.
2Reliability
If a secure attachment mechanism is implemented, then the mechanical reliability is improved, but the ease of removal deteriorates
Solution Approach 1:
The attachment mechanism transitions between two dynamic states: a secured state where friction and suction forces hold the device firmly in place during activities, and a removable state where applied force overcomes these forces for easy detachment. The elastic cover's flexibility allows it to adapt to both secure attachment and easy removal requirements.
Solution Approach 2:
The attachment and removal process operates periodically, with the elastic cover maintaining secure friction-based attachment during use phases and allowing easy removal when force is applied. This periodic switching between secured and removable states satisfies both reliability and ease of operation requirements.
3Strength
If friction and suction forces are increased for secure fit, then the attachment strength is improved, but the ease of manufacture worsens due to material and structural requirements
Solution Approach 1:
The elastic cover's material parameters (elasticity, friction coefficient, suction characteristics) are optimized to generate sufficient attachment strength. By selecting appropriate material properties, the design achieves strong friction-based attachment without requiring complex structural features or additional manufacturing steps.
Solution Approach 2:
The polymer holder combines the hemispherical pocket structure with an elastic cover material that provides both structural support and friction-based attachment. This composite approach integrates multiple functions (structural containment and secure attachment) into a single manufacturable component, simplifying production while maintaining attachment strength.
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 polymer holder provides secure attachment during activities and easy removal of biosignal processing devices, maintaining stability and operability even in dynamic positions, while ensuring a tight and secure fit.
Implementation Method 1
an elastic cover for enhanced friction and suction force
Implementation Method 2
an elastic cover for enhanced friction and suction force
Data Source
AI summary
A polymer holder for a biosignal processing device, wherein a wall of the polymer holder forms a pocket, and the wall follows an outer contour of the biosignal processing device. The polymer holder has a first aperture for inserting the biosignal processing device into the pocket and removing the biosignal processing device from the pocket. The polymer holder includes an electrically conductive contact structure, which is in a wired electric contact with electrodes that receive the at least one biosignal, at a rear section opposite to the first aperture, and the electrically conductive contact structure is at least partly attached inside the wall. The electrically conductive contact structure is electrically connected with a counterpart of the biosignal processing device in response to an insert of the biosignal processing device in the pocket.