Probe Guard Dynamics for Compact Automatic Analysis Devices
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Solution Overview
Problem
Small automatic analysis devices face challenges in securing the necessary space for the retractable specimen contact prevention plate, leading to complicated operations and decreased efficiency due to the large operating range required for accessing the specimen container installation section.
Innovation Solution
A probe guard that can move vertically and horizontally within a fixed range without being removed from the specimen container installation section, utilizing a probe guard installation presence/absence detection sensor to ensure safety and maintain access to the specimen container while preventing operator contact with the probe.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a retractable specimen contact prevention plate is used to secure operator safety, then operator safety is improved, but the operating range becomes large and the device complexity increases
Solution Approach 1:
The probe guard is designed to be movable rather than fixed, allowing it to dynamically change position between a blocking position (limiting access to the probe tip) and a retracted position (allowing access). This dynamic capability enables the guard to adapt to different operational states without requiring a completely separate removal mechanism, thus improving safety while controlling complexity.
Solution Approach 2:
The probe guard serves multiple functions: it acts as a safety barrier to prevent contact with the probe tip, guides the probe's movement along the track, and can be selectively moved to allow specimen container access. By combining these functions into a single component, the design avoids the need for separate safety mechanisms and access control devices, reducing overall system complexity.
2Ease of operation
If the specimen contact prevention plate is completely removed to allow operator access, then ease of operation is improved, but operator safety deteriorates
Solution Approach 1:
The probe guard transitions from a static removed state to a dynamic movable state, allowing it to be positioned as needed. When access is required, the guard is moved to the retracted position; when safety is needed, it returns to the blocking position. This eliminates the need for complete removal while maintaining ease of operation.
Solution Approach 2:
The system incorporates sensors that detect the presence and position of the probe guard, providing feedback to the control system. This feedback mechanism ensures that the guard is properly positioned before operations proceed, maintaining safety while allowing necessary access when the guard is correctly retracted.
3Ease of operation
If a large operating range is secured for the probe guard to retract, then ease of operation is improved, but the device volume increases
Solution Approach 1:
Instead of allowing the probe guard to retract in a single large linear direction, the design enables movement in multiple dimensions - primarily along the probe track axis and with some vertical clearance. This multi-dimensional movement approach achieves the necessary access capability within a more compact overall volume compared to a single-dimension large-range retraction system.
Solution Approach 2:
The probe guard's movement range is dynamically adjusted based on operational needs rather than providing a fixed large range. The guard moves only as far as necessary to allow specimen container access, and the track design guides this movement efficiently, reducing the overall volume required compared to a system designed for maximum possible retraction distance.
Data Source
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AI summary
The present invention achieves an automatic analysis device which has a probe guard for which the range of motion for accessing a specimen container installation section is small and which can be moved without being removed from a specimen installation section. The directions of movement of a probe guard (26) are the vertical direction of a specimen container erection mechanism (1) and the horizontal direction within an upper region of the specimen container erection mechanism (1), and a specimen container can be accessed without the need to move the probe guard (26) to outside the upper region of the specimen container erection mechanism (1). Accordingly, it is possible to achieve an automatic analysis device which has a probe guard (26) for which the range of motion for accessing a specimen installation section is small and which can be moved without being removed from a specimen container erection mechanism (1).