Elastic Physiological Patch Waterproof Sealing via Guide Needle
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Solution Overview
Problem
Conventional sensor patches face issues with waterproofing, as existing sealing methods are cumbersome, potentially damage the electronic device, and are not suitable for sensors with low physical strength, leading to risks of damage during assembly and use.
Innovation Solution
An elastic physiological patch with a soft patch body made of thermosetting or thermoplastic elastomer that encapsulates an electronic device and an implantable sensor, using a guide needle to pierce through the patch body for implantation, achieving sealing and waterproofing without damaging the device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If sealant is coated and heated to achieve waterproofing, then sealing effect is improved, but assembly process becomes cumbersome and more difficult
Solution Approach 1:
The patent replaces the thermal processing method (heating sealant) with a mechanical elastic deformation method. The patch body is made of elastic material that can be stretched and deformed mechanically to create waterproof sealing, eliminating the need for heating equipment and thermal processing steps, thus simplifying the assembly process while maintaining sealing effectiveness
Solution Approach 2:
The patent changes the physical parameter of the patch body from rigid to elastic by selecting specific elastic materials. This parameter change allows the patch to deform and seal through mechanical stretching rather than requiring thermal activation, thereby improving ease of manufacture while maintaining reliable waterproofing
2Reliability
If ultrasonic welding is used for sealing, then waterproofing is achieved, but fusion temperature may damage the electronic device
Solution Approach 1:
The patent replaces ultrasonic welding (a thermal-mechanical process) with pure mechanical elastic deformation. The elastic patch body is stretched and deformed to create sealing pressure, eliminating the need for high-temperature welding that could damage electronic components, thus removing the harmful thermal effect while maintaining waterproof sealing
3Reliability
If O-ring is pressed tightly for sealing, then waterproofing is achieved, but physical strength of sensor may be damaged
Solution Approach 1:
The patent uses an elastic patch body made of flexible material that can deform and conform to the sensor and mounting seat surfaces. This flexible shell approach distributes sealing pressure uniformly across the interface, avoiding concentrated stress points that could damage the sensor, thereby achieving waterproofing without compromising sensor integrity
Solution Approach 2:
The patent changes the material parameter from rigid (O-ring) to elastic (patch body material). This elastic property allows the sealing element to deform and adapt to the sensor contours, reducing peak stress and preventing damage to the fragile sensor while maintaining effective waterproof sealing
4Strength
If conventional rigid patch body is used, then structural strength is maintained, but waterproofing becomes cumbersome and assembly difficult
Solution Approach 1:
The patent changes the material parameter from rigid to elastic, selecting materials with appropriate elasticity moduli. This parameter change enables the patch body to deform and seal through mechanical stretching, simplifying assembly and waterproofing processes while the elastic material itself provides sufficient structural strength for the application
Solution Approach 2:
The patent introduces dynamic elasticity to the patch body, allowing it to deform during assembly and sealing, then maintain its shape after installation. This dynamic property enables easy assembly through stretching and deformation, while the material's inherent elasticity provides the necessary structural strength once installed
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 simplifies assembly, reduces the risk of damage to the electronic device, provides effective waterproofing, and allows the patch to conform to the skin, enhancing user comfort and reducing manufacturing costs.
Implementation Method 1
an elastic physiological patch includes a patch assembly and an implant assembly. The patch assembly includes an electronic device, and a soft patch body defining a chamber for receiving the electronic device
Data Source
AI summary
An elastic physiological patch includes a patch assembly and an implant assembly. The patch assembly includes an electronic device, and a soft patch body defining a chamber for receiving the electronic device. The implant assembly is mountable to the electronic device and includes an implant which is capable of being driven to partially pass through the patch body and which is adapted to be implanted in the skin of a subject. The implant and the patch body cooperatively seal the chamber.