Sensor Fixing Part with Flexible Sheet and Spacer
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Solution Overview
Problem
Conventional sensors measuring substances in bodily secretions become unstable when they deviate from their contact position during continuous measurements.
Innovation Solution
A sensor design featuring a flexible sheet with an adhesive layer for attachment to the body, a spacer for maintaining contact, and a cover part to prevent deviation, along with an electrode part comprising an absorption layer, enzyme layer, and electrode layer for converting secretions into electrical signals.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Duration of action of moving object
If the sensor is positioned at a prescribed position to contact the living body for continuous measurement, then measurement continuity is improved, but the sensor may deviate from the contact position causing measurement instability
Solution Approach 1:
The patent employs a flexible sheet as the base structure of the fixing part, which can conform to the contours of the living body surface. This flexibility allows the sensor to maintain continuous contact during body movements while preventing deviation, thus resolving the contradiction between measurement continuity and stability.
Solution Approach 2:
The fixing part is segmented into multiple functional components: a flexible sheet for conformal attachment, a spacer part for positioning, and a cover part for securing. This segmentation allows each component to perform its specific function optimally, ensuring both continuous contact and measurement stability.
2Reliability
If a fixing part is added to suppress sensor deviation, then measurement stability is improved, but device complexity increases
Solution Approach 1:
The fixing part integrates multiple functions into a single composite structure combining the flexible sheet, spacer part, and cover part. This merging approach provides stable fixation without requiring separate complex fixation mechanisms, thus improving measurement stability while controlling device complexity.
Solution Approach 2:
The flexible sheet serves as both the base structure and attachment mechanism, eliminating the need for rigid fixation components. This thin film approach provides effective fixing with minimal added complexity to the device structure.
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 sensor effectively suppresses deviation and maintains continuous contact with the body, improving measurement stability and operability by converting secretions into electrical signals for accurate detection.
Implementation Method 1
the flexible sheet include an adhesive layer on a surface contacting the living body, and the spacer part be attached to the flexible sheet by the adhesive layer
Implementation Method 2
an absorption layer capable of absorbing the secretion
Implementation Method 3
an enzyme layer that contains an enzyme, and an electrode part. The sensor detects, by the electrode part, an electrode-detectable substance generated from the measurement target substance under presence of the enzyme
Implementation Method 4
an electrode layer that converts a reaction with the secretion into an electrical signal
Data Source
AI summary
Provided is a sensor capable of suppressing deviation in the state where the sensor is in contact with a living body. A sensor 1 converts, to an electrical signal, the amount of a substance to be measured contained in a secretion from a living body H, the sensor 1 comprising: a sensor main body 10 having an electrode part 11 that is disposed on the contact surface side contacting the living body H and a substrate 12 that is disposed on the exposed surface side opposite to the contact surface; and a fixing part 20 for fixing the sensor main body 10 to the living body H, wherein the fixing part 20 has a flexible sheet 21 that is attached to the living body H and fixes the sensor main body 10 to the living body H, and a spacer part 22 that is disposed between the flexible sheet 21 and the exposed surface and has a thickness equal to or thicker than that of the sensor main body 10.