Symmetrical planar sheath flow pool

Abstract

The invention discloses a symmetrical planar sheath flow pool. A sheath fluid inlet and an exhaust port are formed in an inclined flow channel, the sample injection end of the sheath fluid inlet is connected with a first pipe body, and the air outlet end of the exhaust port is connected with a second pipe body. A straight flow channel is arranged in a symmetrical structure along the axial center line and the radial center line of a pool body structure, a sample liquid inlet is formed in the upper side of the straight flow channel, a waste liquid outlet is formed in the lower side of the straight flow channel, the sample liquid inlet is connected with a flat-mouth sample injection needle, and the straight flow channel is formed by sequentially connecting a rectangular channel, a gradual change channel and a micro-flow channel. Due to the fact that the structure of the straight flow channel is vertically and bilaterally symmetrical, it can be guaranteed that sample liquid is always keptin the center of the flow channel in the process in which sheath liquid extrudes and focuses the sample liquid,sample flow with stable flow speed is obtained, the influence on the flowing track and the rolling degree of the cells in the whole sample flow is avoided, and a clear cell form image can be effectively shot by utilizing a microscope.

Description

technical field [0001] The invention relates to the technical field of medical in vitro diagnostic flow cytomorphological analysis, in particular to a symmetrical planar sheath flow cell. Background technique [0002] Driven by AI, high-speed data transmission and storage, and the rapid development of CCD technology, cytomorphological medical detection, diagnosis, treatment and research are also constantly entering the deep water area, especially the voice of precision medicine is increasing, and new standards and requirements are put forward for medical detection technology. At present, the automatic cell morphology analysis system basically adopts the technology of combining sheath flow and microscopic imaging. The sheath flow cell is an important part of the automatic cell morphology analyzer, and it is the core of transmitting cells through the microscopic imaging field of view. The plane stability of the sheath flow cell layer passing through the field of view directly ...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a symmetrical planar sheath flow cell, which aims to solve the problem that the fully automatic cell morphology analysis system in the prior art cannot obtain a sample flow with a stable flow rate by using the technology of combining sheath flow and microscopic imaging. During this process, the position of the sample flow will deviate from the center of the flow channel due to the difference in pressure difference between the upper and lower sides or the left and right sides of the flow channel, which will affect the trajectory and tumbling degree of the cell flow in the entire sample flow, resulting in the inability to take clear cell images with a microscope technical problem

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