Micro-fluidic chip liquid absorption and magnetic bead attraction device and liquid analysis system

By integrating a liquid aspiration component and a magnetic bead attraction component into a microfluidic chip device, the simultaneous operation of liquid aspiration and magnetic bead separation is achieved, solving the problems of complex operation and low efficiency in the prior art, and improving accuracy and ease of use.

CN223517554UActive Publication Date: 2025-11-07GUANGZHOU MEDICAL UNIV
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Patent Information

Application Number
CN202422811329.8
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-18
Publication Date
2025-11-07
Estimated Expiration
2034-11-18

AI Technical Summary

Technical Problem

In existing technologies, liquid aspiration and magnetic bead separation require different equipment and operating procedures, resulting in complex and inefficient operations that make it difficult to achieve precise control.

Method used

Design a microfluidic chip liquid aspiration and magnetic bead attraction device, integrating a liquid aspiration component, a magnetic bead attraction component, and a detection component. The device works in coordination with a controller to achieve simultaneous liquid aspiration and magnetic bead separation. The detection component detects the liquid level and magnetic bead position to adjust the operating accuracy.

Benefits of technology

It improves the accuracy and ease of operation of liquid aspiration and magnetic bead separation, reduces equipment size, and simplifies experimental procedures.

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Abstract

The utility model discloses a microfluidic chip liquid absorption and magnetic bead attraction device and a liquid analysis system, and the device comprises a device body which is provided with a placing bayonet for placing a microfluidic chip and an injector fixing groove for fixing an injector; the liquid suction assembly enables the injector to be connected with the output port of the micro-fluidic chip, enables the input port of the micro-fluidic chip to be connected with liquid needing to flow in, and is used for adjusting the suction force of the micro-fluidic chip to the liquid needing to flow in; the magnetic bead attraction assembly is used for attracting magnetic beads, needing to flow into liquid, in the micro-fluidic chip to move; the detection assembly is used for detecting the liquid level and the magnetic bead position in the micro-fluidic chip and outputting a corresponding liquid level signal and a corresponding magnetic bead position signal; and the controller is used for receiving the liquid level signal, outputting a first driving signal to drive the liquid suction assembly to work, receiving the magnetic bead position signal and outputting a second driving signal to drive the magnetic bead attraction assembly to work. The utility model aims to realize accurate liquid suction and magnetic bead separation of the micro-fluidic chip at the same time.
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