Drive Belt Positioning for Cuvette Stabilization in Diagnostics
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Solution Overview
Problem
Existing automatic analysis apparatuses for in vitro diagnostics face challenges in ensuring accurate positioning and mechanical stabilization of cuvettes, leading to uncertainties in measurement replicability and reliability.
Innovation Solution
A drive device with a guide element and a drive belt configured to cooperate with the lower portions of cuvettes, ensuring accurate horizontal and vertical positioning at a measuring station, and mechanically stabilizing the cuvettes to prevent vibrations during sampling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the drive belt cooperates with the upper portions of the cuvettes (as in prior art), then the structure is simple and economical, but the positioning of the lower portions is uncertain and measurement replicability is compromised
Solution Approach 1:
The drive belt is repositioned from cooperating with the upper portions of the cuvettes to cooperating with the lower portions, changing the vertical dimension of interaction. This dimensional shift allows the drive belt to directly control the positioning of the lower portions where measurements are performed, thereby improving measurement precision while maintaining structural simplicity
2Device complexity
If the cuvettes are not vertically guided in an accurate manner, then the device structure remains simple, but the replicability of measurement conditions is affected
Solution Approach 1:
The drive belt acts as an intermediary element that provides both horizontal driving function and vertical positioning guidance. By incorporating the vertical guidance function into the drive belt mechanism, the patent achieves accurate vertical positioning without adding separate complex vertical guidance structures, thus improving measurement reliability while maintaining structural simplicity
3Device complexity
If the cuvettes are not mechanically stabilized in the guide element, then the guide element structure remains simple, but vibrations occur during sampling needle introduction affecting measurement reliability
Solution Approach 1:
The drive belt is positioned to cooperate with the lower portions of the cuvettes before sampling operations occur. This preliminary positioning and stabilization of the cuvettes by the drive belt prevents vibrations during subsequent sampling needle introduction, thereby improving measurement reliability without requiring additional complex stabilization structures in the guide element
Data Source
AI summary
The drive device includes a guide element defining a guide track, the guide element being configured to receive and guide a cuvettes strip in translation along the guide track, and a drive belt configured to displace the cuvettes strip in translation along the guide track when the cuvettes strip is received in the guide element. The drive belt is disposed below the guide track and is configured to cooperate with lower portions of the cuvettes of the cuvettes strip when the cuvettes strip is received in the guide element.