Sensor Insertion Device with Usage Status Indication
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Solution Overview
Problem
Conventional sensor insertion devices lack clear indication of usage status, leading to potential reuse and compromised sterilization and measurement reliability, making them inconvenient to use.
Innovation Solution
The sensor insertion device features a cylindrical design with a lower case and upper case, a base holder, a needle holder, and a needle holder raising mechanism, where the upper case is pushed down to attach the sensor base to the skin, and the holding mechanism ensures the upper case remains in place, visually indicating usage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the upper case is pushed down to insert the sensor, then the sensor insertion function is achieved, but the lower part of the lower case remains exposed making usage status unclear
Solution Approach 1:
The patent applies visual indication through the relative positions of the upper and lower cases. When the upper case is pushed down to insert the sensor, the exposure level of the lower case changes, providing visual feedback about usage status. This solves the problem of unclear usage indication while maintaining the insertion function.
2Device complexity
If the sensor insertion device is used without clear usage indication, then the device structure remains simple, but sterilization integrity is compromised due to potential reuse
Solution Approach 1:
The patent implements a holding mechanism that automatically holds the upper case in its pushed-down position after sensor insertion. This preliminary action of positioning and holding provides clear visual indication that the device has been used, preventing reuse and maintaining sterilization integrity without significantly increasing device complexity.
3Stability of the object's composition
If the upper case is pushed down completely, then the sensor base is securely attached, but the lower case becomes fully covered making usage status hard to detect
Solution Approach 1:
The patent uses the vertical dimension of case exposure as an indicator of usage status. By designing the holding mechanism to maintain the upper case in a specific pushed-down position, the relative vertical positioning between the upper and lower cases provides detectable visual information about whether the sensor has been inserted, solving the detection difficulty while maintaining secure attachment.
Data Source
AI summary
A sensor insertion device comprises a lower case and an upper case. A base holder and a needle holder are disposed in the lower case. A needle holder raising mechanism is disposed above the needle holder. A sensor base having a sensor unit is held by the base holder. When the upper case is pushed down, the base holder and the needle holder move toward an opening on the lower surface side of the lower case, and the needle holder is raised by the needle holder raising mechanism. A protrusion that holds the upper case on the lower case is provided to the upper case in a state in which the upper case has been pushed down until the opening on the lower surface side comes into contact with the skin.