Liquid distribution equipment

Abstract

The invention provides liquid distribution equipment which comprises a pump and a first liquid outlet channel, wherein the first liquid outlet channel is in liquid communication with the pump, and the liquid is sprayed onto a matrix material through the first liquid outlet channel by controlling the pump; the equipment further comprises an airtight sealing space which is in liquid communication with the pump and the first liquid outlet channel, and the airtight sealing space is partially filled with liquid and partially filled with air. Optimally, the cross section area of the airtight sealing space is larger than that of the first liquid outlet channel.

Description

technical field [0001] The present invention pertains to liquid dispensing apparatus and in particular to spraying liquid onto a substrate material, such as a nitrocellulose membrane, through a pump arrangement in the apparatus. Background technique [0002] Clinical detection is becoming more and more popular, mainly using some detection reagents to detect whether the target analyte is contained in the patient's body fluid (test sample). Such detection reagents or detection equipment include many, among which the main one is immunological detection based on the principle of immunology. Immunoassays can be performed in different ways and formats. Of all the different formats in which immunoassays are applied, probably the most widely used are those employing immobilized antibodies and / or antigens, employing solid phase separation. In the professional world this technique is known as a heterogeneous immunoassay. Separation of immobilized antibodies and / or antigens is only ...

AI Technical Summary

Problems solved by technology

[0007] However, stepper motors or servo motors using the principle of electric pulses also have inherent defects in liquid distribution or automatic processing, especially when liquid reagents are processed on solid-phase matrix materials, and inherent defects are also exposed, mainly Due to the characteristics of the operation of the electric pulse principle, the performance of liquid reagents on solid-phase matrix materials is not uniform. When it is necessary to process line-like reagent lines on the matrix material, this defect is more prominent.

One aspect of solving this problem is to use more accurate equipment, such as equipment with smaller step angles or servo motors with higher precision, but this requires high costs

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