Removable Syringe Tip Mechanism for Automated Liquid Dispensing
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Solution Overview
Problem
Conventional molecular diagnostic equipment lacks a device for automatically removing used dispensing tips during aspiration or dispensing of reagents or liquids, necessitating separate cleaning devices and increasing manufacturing costs and installation space.
Innovation Solution
A suction dispensing device with a removable tip that includes a driving base module and syringe operation module, enabling automatic attachment, aspiration, dispensing, tip removal, and cartridge sealing paper punching through a combination of motors, threaded rods, and elastic members.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Extent of automation
If conventional molecular diagnostic equipment uses syringe modules to aspirate or dispense liquids, then the basic dispensing function is achieved, but the equipment lacks automatic tip removal capability requiring separate cleaning devices
Solution Approach 1:
The patent combines the tip removal function with the syringe module by integrating a tip removal plate into the existing syringe structure. The tip removal plate is positioned at the front end of the syringe and moves together with the syringe during aspiration and dispensing operations, automatically removing used tips without requiring separate cleaning devices.
Solution Approach 2:
The syringe module is designed to perform multiple functions: aspiration, dispensing, and automatic tip removal. The tip removal plate serves dual purposes by being part of the syringe structure during liquid handling and then protruding to remove tips after use, making the equipment more versatile without adding separate dedicated components.
2Ease of manufacture
If separate cleaning devices are used to remove dispensing tips, then tip removal is achieved, but manufacturing costs and installation space increase
Solution Approach 1:
The tip removal function is merged into the syringe module structure, eliminating the need for separate cleaning devices. This integration reduces the total number of components, simplifies the equipment structure, and lowers manufacturing costs while maintaining the tip removal capability.
3Ease of operation
If a tip removal plate is integrated into the syringe module, then automatic tip removal is enabled, but the syringe structure becomes more complex
Solution Approach 1:
The syringe module is segmented into functional components: the main syringe body for liquid handling and the tip removal plate for tip removal. The tip removal plate is positioned at the front end and can move independently to protrude beyond the syringe front end during tip removal operations, allowing specialized function without compromising the main syringe structure.
Solution Approach 2:
The tip removal plate is designed to be dynamic, moving with the syringe during aspiration and dispensing, then protruding forward during tip removal operations. This dynamic positioning allows the same component to serve different functions at different times, reducing the need for additional static components.
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
Enables automation of dispensing functions, reduces manufacturing costs and installation space, and improves reliability and accuracy by performing multiple tasks with a single device.
Implementation Method 1
a first motor formed on the driving base frame and configured to rotate the first threaded rod; and a first power transmission device which is formed on the driving base frame, is installed between the first threaded rod and the first motor, and is configured to transmit rotational power generated by the first motor to the first threaded rod
Implementation Method 2
a first threaded rod screwed through a first nut member formed on the movable plate to allow the movable plate to move up and down through screw motion
Implementation Method 3
a second elastic member installed between the syringe fixing frame and the pusher, which applies an elastic restoring force in the direction of raising the pusher
Implementation Method 4
when the movable plate rises from a reference position to a suction position, liquid is suctioned therein
Data Source
AI summary
The present invention relates to a suction dispensing device having a removable tip, which can suction or dispense liquid by allowing a dispensing tip to be mounted thereon and can automatically remove the mounted dispensing tip, the device comprising: a driving base module which raises and lowers a movable plate; and a syringe operation module having at least one syringe installed therein so that when the movable plate rises from a reference position to a suction position, liquid can be suctioned therein, and when the movable plate returns to the reference position from the suction position, the liquid can be dispensed, wherein, in the syringe operation module, when the movable plate moves downward from the reference position to a tip removal position, a tip removal plate may be formed so that the dispensing tip forcefully engaged in the front end of the syringe can be removed.