Sensor Terminal Friction Layout for Secure Glucose Strip Holding
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Solution Overview
Problem
In blood glucose measurement systems, the friction between the measurement device and the sensor during insertion can damage the sensor's wiring and plating, while reducing friction to prevent damage weakens the holding force, leading to potential sensor fall.
Innovation Solution
A measurement system with a sensor and a measurement device featuring a first and second electrode group on the contact surface, where the first terminal group receives smaller static frictional forces and the second terminal group receives larger forces, allowing for reduced friction and stable sensor holding.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the holding force of the terminal is increased to prevent sensor fall, then the sensor can be reliably held in the measurement device, but friction between the terminal and sensor surface increases, causing damage to wiring and plating
Solution Approach 1:
The patent applies different friction characteristics to different regions of the contact surface. The first region (where the first terminal group contacts) has lower friction to reduce damage during insertion, while the second region (where the second terminal group contacts) has higher friction to prevent sensor fall. This local differentiation of friction properties resolves the contradiction between preventing damage and ensuring reliable holding.
Solution Approach 2:
The contact surface is divided into multiple regions with different friction characteristics. The first region corresponds to the first terminal group and the second region corresponds to the second terminal group. By segmenting the contact surface and assigning different friction properties to each segment, the patent simultaneously achieves low friction for damage prevention and high friction for reliable holding.
2Object-affected harmful factors
If the holding force of the terminal is weakened to reduce friction and prevent damage, then friction between terminal and sensor surface decreases, but the sensor cannot be sufficiently held and may fall
Solution Approach 1:
Different regions of the contact surface are assigned different friction properties. The first region has lower friction to minimize damage during insertion, while the second region has higher friction to ensure the sensor remains securely held. This local quality differentiation allows the system to simultaneously reduce friction damage and maintain reliable holding.
Solution Approach 2:
The contact surface is segmented into at least two regions: a first region with lower friction characteristics and a second region with higher friction characteristics. This segmentation enables the first terminal group to experience reduced friction while the second terminal group provides sufficient holding force to prevent sensor fall.
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
This configuration reduces damage from friction and ensures reliable sensor holding, preventing the sensor from falling even when tilted.
Implementation Method 1
the plural terminals receive static frictional forces from the contact surface by pressing the contact surface
Data Source
AI summary
A measurement system including a sensor and a measurement device including an insertion port for the sensor, wherein the measurement device measures a measurement target component at the sensor and includes plural terminals contacting the sensor, and the terminals slide on a contact surface of the sensor, the contact surface has a first electrode group on a rear end side and a second electrode group on a distal end side, the plural terminals receive static frictional forces from the contact surface and include a first terminal group contacting the first electrode group on a side closer to the insertion port than a side on which a second terminal group contacting the second electrode group, and a sum of static frictional forces that the first terminal group receives from the contact surface is smaller than a sum of static frictional forces that the second terminal group receives from the contact surface.