Diagnostic Well Cleaning Head Vortex Suction Mechanism
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Solution Overview
Problem
Existing cleaning devices for diagnostic test card wells fail to ensure effective and reproducible cleaning due to difficulties in coaxial mounting of cleaning and suction tubes, leading to incomplete fluid recovery and unsatisfactory cleaning results.
Innovation Solution
A method and device featuring a cleaning head with a cleaning tube and suction tube, where the cleaning tube delivers fluid and the suction tube aspirates contaminated fluid, utilizing an air intake between the exterior and interior of the cleaning tube to create a vortex for complete cleaning, and a system for relative displacement to ensure effective abutment and suction zone creation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If coaxial mounting of cleaning tube and suction tube is used, then fluid recovery efficiency is improved, but manufacturing precision and assembly difficulty worsen
Solution Approach 1:
The cleaning head is divided into separate cleaning tube and suction tube components that can be independently manufactured and then assembled, allowing for modular replacement and simplified manufacturing while maintaining coaxial alignment through precise positioning features
Solution Approach 2:
A common housing or mounting structure serves as an intermediary element that holds both the cleaning tube and suction tube in their respective positions, ensuring coaxial alignment without requiring direct precision mounting between the two tubes themselves
2Productivity
If cleaning fluid is delivered at the center of the head, then injection efficiency is improved, but total recovery of contaminated liquid worsens
Solution Approach 1:
The suction tube extends beyond the cleaning tube in the axial dimension, creating a three-dimensional arrangement where cleaning and suction occur at different positions along the same axis, enabling both center injection and effective periphery aspiration
3Ease of operation
If cleaning head is displaced to enter well interior, then cleaning accessibility is improved, but cleaning reproducibility worsens
Solution Approach 1:
Positioning features and guides provide feedback mechanisms that ensure the cleaning head reaches the correct position and orientation relative to the well, maintaining reproducibility while allowing for the necessary displacement to access different well positions
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
The solution enables complete and reproducible cleaning of test sample wells by creating a vortex with the air intake, ensuring effective fluid recovery and improved cleaning efficiency.
Implementation Method 1
providing for intake of air between the exterior and the interior of the free end of the cleaning tube so as to create a vortex in the cleaning fluid within the well to be cleaned
Implementation Method 2
suction tube mounted within the cleaning tube, for aspirating the contaminated cleaning fluid
Data Source
AI summary
A method for cleaning a test sample well, provided in a diagnostic test card, using a cleaning head having a cleaning tube delivering, at its free end, a cleaning fluid, and a suction tube mounted inside the cleaning tube for aspirating the contaminated cleaning fluid from its free end located in proximity to the free end of the cleaning tube. The method provides for relative displacement between the test card and the cleaning head, so that the test card occupies a cleaning position wherein the cleaning tube delivers, at its free end, the cleaning fluid to the inside of the well to be cleaned and the suction tube aspirates the contaminated cleaning fluid.