Handheld Analytical Drive Repositioning for Test Strip Readiness
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Solution Overview
Problem
Existing analytical systems, such as blood sugar monitoring devices, face inefficiencies when replacing disposable test element magazines, as they often require users to wait for all positions to be checked before finding a usable test strip, wasting time and energy, especially in battery-operated handheld devices.
Innovation Solution
The system controls the positioning process by determining the usability of the first test element and, if it's not usable, repositions the last used test element, allowing for immediate use without extensive checks, conserving energy and improving user friendliness by indicating test readiness and tracking the travel path for efficient repositioning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the drum is replaced and the system checks each position to find a usable test element, then the system ensures a usable test strip is found, but the user wait time increases significantly
Solution Approach 1:
The system performs preliminary actions by storing the position of the last presented test element in memory before device actuation. When the device is restarted or the drum is replaced, the system retrieves this stored position information and directly positions the drum to that previously used location, rather than checking all positions sequentially. This preliminary storage of position data enables immediate resumption of testing without time-consuming searches.
2Reliability
If the drive checks each test element position to find a usable one, then the system ensures a usable test strip is found, but the energy supply is depleted faster
Solution Approach 1:
The system performs preliminary action by storing the position of the last presented test element in memory before device actuation. When the device is restarted or the drum is replaced, the system retrieves this stored position information and directly positions the drum to that previously used location, rather than checking all positions sequentially. This eliminates unnecessary energy-consuming movements and checks of all drum positions.
3Reliability
If the system checks all drum positions to find a usable test element, then the system ensures a usable test strip is found, but the device complexity increases
Solution Approach 1:
The system performs preliminary action by storing the position of the last presented test element in memory before device actuation. When the device is restarted or the drum is replaced, the system retrieves this stored position information and directly positions the drum to that previously used location, rather than checking all positions sequentially. This simplifies the control logic by eliminating the need for complex sequential searching algorithms and multiple sensing mechanisms.
Data Source
AI summary
A system and method of use is provided, relating to an analytical system in which a disposable unit configured to contain a plurality of test strips is inserted into a hand-held device, the test strips being successively presented at a measuring position by a drive provided with the device, wherein after a disposable unit is removed and replaced, the drive is activated to position the test strip that is first in order at the measuring position and it is determined whether the test strip is present, and if the first test strip is not present, the test strip that was presented last when the device was actuated is again positioned at the measuring position.