Particle Sorting Kit Filter Unit Protrusion Design
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
In particle sorting using microchips, foreign matters such as aggregates and fiber waste in sample liquids lead to reduced analysis and sorting accuracy, and existing filters fail to function effectively at low flow rates without causing particle loss or connection issues between tubes and filter units.
Innovation Solution
A particle sorting kit with a filter unit that includes protrusions matching the tube's outer diameter for secure connection, featuring side surface and connection surface protrusions that facilitate deep insertion and prevent loose connections, along with a tapered structure to minimize dead volume and particle loss.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a filter unit is introduced to remove foreign matters from sample liquid, then analysis accuracy is improved, but particle loss increases and connection reliability deteriorates
Solution Approach 1:
The filter unit is divided into a filter body and a separate fitting portion with protrusions. This segmentation allows the filter to be optimized for particle removal while the fitting portion is optimized for secure tube connection, preventing both particle loss and connection failures independently
Solution Approach 2:
The fitting portion acts as an intermediary component between the tube and filter body. It provides a transition zone with protrusions that secure the tube while maintaining a smooth flow path, preventing particle loss at the connection interface
2Measurement precision
If a filter unit is introduced to remove foreign matters, then analysis accuracy is improved, but connection reliability deteriorates due to gap and dead volume generation
Solution Approach 1:
Separating the filter function from the connection function allows each component to be optimized independently, eliminating gaps and dead volume that would compromise connection reliability
Solution Approach 2:
The protrusions extend in the longitudinal dimension of the tube, providing mechanical interlocking that prevents disconnection while maintaining a seamless flow path without gaps or dead volume
3Measurement precision
If a filter unit is introduced to remove foreign matters, then analysis accuracy is improved, but workability deteriorates due to holding failure
Solution Approach 1:
The fitting portion is designed as a separate component with protrusions that provide positive mechanical holding. This segmentation ensures that the tube is securely retained during operation while allowing for easy assembly and disassembly by the user
Solution Approach 2:
The protrusions provide automatic positioning and securing of the tube as it is inserted. The tube naturally aligns with and locks into the fitting portion without requiring additional fastening operations, improving workability
Data Source
AI summary
There is provided a particle sorting kit including a filter unit, which has a small amount of particle loss at a connection portion between a tube through which a sample liquid flows and the filter unit and functions even at a low flow rate.There is provided a particle sorting kit including a sample accommodation unit for accommodating a sample liquid containing particles, a sample flow path through which the sample liquid flows, a detection region in which a target particle is detected from the sample liquid, and a filter unit including a filter and a fitting portion that fits to an outer diameter of a tube for connection with the sample accommodation unit and/or the sample flow path, in which the fitting portion includes a protrusion that protrudes in the tube direction.