Adhesive Patch With Reinforcement Liner For Physiological Sensor
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Solution Overview
Problem
Existing physiological characteristic sensors, such as glucose sensors, face challenges in secure adhesion to the skin due to sensitivity in placement and positioning, which can affect the successful deployment and longevity of the sensor.
Innovation Solution
A flexible adhesive patch arrangement with distinct sensor and device mounting regions, reinforced by a removable liner that enhances structural rigidity, facilitates easy peeling and secure attachment of the sensor and device, ensuring reliable adhesion and reduced risk of drooping or bending during deployment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a flexible adhesive patch is used to mount the sensor, then the sensor can be adhered to the skin, but the patch lacks structural rigidity causing drooping or bending during deployment
Solution Approach 1:
The adhesive patch is divided into distinct functional regions: a flexible adhesive portion for skin contact and a separate reinforcement liner portion that provides structural support. This segmentation allows each region to perform its specific function optimally without compromising the other.
Solution Approach 2:
The patch assembly combines materials with different mechanical properties - a flexible adhesive material for conformability and a rigid reinforcement material for structural integrity. This composite structure resolves the contradiction between flexibility and rigidity.
2Device complexity
If the sensor mounting region and device mounting region are combined, then the patch structure is simpler, but the sensor adhesion is compromised due to lack of distinct positioning areas
Solution Approach 1:
The adhesive patch is divided into distinct functional regions: a sensor mounting region with sensor-affixing features and a device mounting region with device-affixing features. This spatial segmentation ensures proper positioning and reliable adhesion for both components while maintaining a relatively simple overall structure.
3Strength
If the reinforcement liner covers the entire patch, then structural rigidity is maximized, but the sensor-affixing feature is obscured and sensor attachment becomes difficult
Solution Approach 1:
The reinforcement liner is designed with a cutout area that removes material specifically over the sensor-affixing feature region. This local modification provides structural rigidity in the device mounting area while maintaining accessibility and adhesion properties in the sensor mounting area.
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 ensures a secure, long-lasting adhesion of the glucose sensor to the skin, preventing unwanted bending or folding, and simplifies the assembly process by using a peelable backing liner and reinforcement liner, enhancing the ease of use for patients and caregivers.
Implementation Method 1
a flexible adhesive patch having an adhesive skin-facing side
Implementation Method 2
the reinforcement liner being formed from a material that reinforces structural rigidity of the flexible adhesive patch
Data Source
AI summary
An adhesive patch arrangement for a sensor includes a flexible patch, a sensor-affixing feature located in a sensor mounting region of the component-facing side of the flexible patch, the sensor-affixing feature securing the sensor to the flexible patch, and a device-affixing feature located in a device mounting region of the component-facing side of the flexible patch. The device-affixing feature secures a device to the flexible patch. The sensor mounting and device mounting regions are distinct and separate regions. The arrangement also includes a removable reinforcement liner adhered to, and covering, the device-affixing feature, and shaped to define a cutout area that partially surrounds the sensor-affixing feature. The arrangement also includes a removable backing liner adhered to, and covering, the adhesive skin-facing side of the flexible adhesive patch.