Automatic Analyzer Probe Washing Detergent Reduction
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Solution Overview
Problem
Existing automatic analyzer technologies consume excessive detergent during probe washing, as they typically require multiple aspiration-discharge cycles with increased detergent amounts, leading to high detergent usage without effective reduction methods.
Innovation Solution
An automatic analyzer equipped with a dispensing mechanism, syringe pump, and controller that controls the dispensing mechanism and syringe pump to discharge detergent after aspiration and suck the next detergent without feeding washing water, allowing for continuous detergent aspiration-discharge cycles without washing away residual detergent with inside washing water.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If the detergent aspiration amount is increased to wash the inner side of the probe beyond the contaminated range, then the washing coverage is improved, but the detergent consumption increases
Solution Approach 1:
The probe is pre-filled with washing water before detergent aspiration. This preliminary action creates a reservoir that prevents detergent from being washed away during subsequent cycles, allowing the detergent to remain effective for multiple aspiration-discharge operations and reducing overall detergent consumption while maintaining washing coverage
Solution Approach 2:
The washing water is maintained continuously in the probe throughout multiple detergent aspiration-discharge cycles. This continuous presence of washing water ensures that detergent remains in the probe to act on contaminated areas across multiple cycles, eliminating the need to replenish washing water and thereby reducing detergent consumption while sustaining washing effectiveness
2Reliability
If washing water is fed after each detergent aspiration-discharge cycle, then the detergent is flushed out to prevent contamination, but the detergent consumption increases
Solution Approach 1:
The probe is pre-filled with washing water before detergent aspiration begins. This preliminary action establishes a washing water reservoir that allows detergent to be aspirated and discharged multiple times without being flushed out, maintaining contamination prevention while reducing detergent consumption by eliminating intermediate washing water feeding
Solution Approach 2:
The washing water remains continuously present in the probe throughout multiple detergent cycles without being discharged. This continuity allows the detergent to be repeatedly aspirated and discharged while maintaining a barrier against contamination, eliminating the need for intermediate washing water feeding and thereby reducing detergent consumption
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 approach reduces detergent consumption while maintaining effective probe washing, allowing for the inner probe surface to be cleaned with a smaller detergent amount than previously required.
Implementation Method 1
a syringe pump which is connected to the probe and performs the liquid aspiration and discharge
Implementation Method 2
washing of the inner side of the probe is performed by repeating aspiration-discharge of the detergent a plurality of times
Data Source
AI summary
Since a detergent is a consumption article, it is desirable that a use amount of the detergent be as small as possible in a limit that the washing effect is not substantially reduced. Provided is an automatic analyzer which includes a syringe pump which is connected to a probe and performs the body aspiration and discharge, a feed pump which feeds washing water for washing the inside of the probe to the probe via the syringe pump and a controller which controls the dispensing mechanism and the syringe pump, in which the controller, in a case of washing the probe by sucking a detergent in the probe a plurality of times, controls the syringe pump so as to discharge the detergent after sucking the detergent and to suck the next detergent without feeding the washing water to the probe by the feed pump.