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Disposable separation chip module for circulating tumor cells in peripheral blood and method of use thereof

A peripheral blood circulation and separation chip technology, applied in the field of tumor detection, can solve the problems of prolonged separation time, influence, difficulty in achieving high recovery rate, etc., and achieve the effect of saving separation operation time, convenient use, and clear separation effect.

Active Publication Date: 2016-04-13
睿思生命(广东)科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Because the study uses a single-entry chip, it is difficult to achieve a high recovery rate, and the blood needs to be diluted tenfold, and the separation time will be greatly prolonged; after the diluted blood is passed into the chip, the red blood cells and white blood cells are evenly distributed throughout the chip Yes, so the ratio of red blood cells coming out of the collection port of the enriched solution is the same as the dilution ratio of the blood, and the concentration of red blood cells in the final collection solution is the same as the concentration of blood dilution
Containing red blood cells in the enrichment solution will have a great impact on the observation, affecting the purity of circulating tumor cells, and thus adversely affecting the analysis and research of circulating tumor cells

Method used

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  • Disposable separation chip module for circulating tumor cells in peripheral blood and method of use thereof
  • Disposable separation chip module for circulating tumor cells in peripheral blood and method of use thereof
  • Disposable separation chip module for circulating tumor cells in peripheral blood and method of use thereof

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Embodiment 1

[0050] Such as Figure 1-4 As shown, the disposable separation chip system for circulating tumor cells in peripheral blood of the present invention includes a disposable separation chip module 1 and an air pressure control device system 2 . Such as Figure 2-3 As shown, the disposable separation chip module 1 includes a microfluidic chip 11, a blood sample storage tank 12, a PBS sample storage tank 13, a waste liquid storage tank 14, an outlet for enriched recovery solution 15, a microfluidic chip 11 and the blood sample reservoir 12 connecting conduit, the connecting conduit between the microfluidic chip 11 and the PBS sample reservoir 13, the connecting conduit between the microfluidic chip 11 and the waste liquid reservoir 14, and the microfluidic chip 11 and the The connecting conduit for the outlet 15 of the enriched recovery solution. The material of the one-time separation chip module is COC, in which the substrate is composed of two layers of COC sheets, and the proc...

Embodiment 2

[0056] A disposable separation chip module for circulating tumor cells in peripheral blood, wherein the microfluidic chip 11 includes a pipeline for blood circulation and a plurality of structural units, the centerline of the pipeline is parallel to the fluid direction, and the structural units have a cross-sectional shape It is an equilateral triangular micro-column, and the micro-column is arranged in an angular symmetry with the center line of the pipeline as the central axis.

[0057] The material used for the microfluidic chip is COC, and the injection molding process is used to obtain the channel layer with arrayed micropillars, which is irreversibly bonded to another COC substrate with a flat surface by heat sealing.

[0058] The width of the microfluidic chip is 4mm, and the length is 6cm; the critical radius of the microfluidic chip is 6.5-8.5μm; the height of the channel of the microfluidic chip is 75μm; the side length of the equilateral triangle is 30μm; the The mi...

Embodiment 3

[0060] A disposable separation chip module for circulating tumor cells in peripheral blood, wherein the microfluidic chip 11 includes a pipeline for blood circulation and a plurality of structural units, the centerline of the pipeline is parallel to the fluid direction, and the structural units have a cross-sectional shape It is an equilateral triangular micro-column, and the micro-column is arranged in an angular symmetry with the center line of the pipeline as the central axis.

[0061] The width of the microfluidic chip is 5 mm, and the length is 7 cm; the critical radius of the microfluidic chip is 6.5-8.5 μm; the height of the channel of the microfluidic chip is 100 μm; the side length of the equilateral triangle is 40 μm; the The micro-columns are divided into multiple rows, the distance between adjacent micro-columns in the same row is 50 μm on the x-axis projection, and the distance between two adjacent rows of micro-columns is 70 μm on the y-axis projection, wherein th...

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Abstract

The invention provides a disposable separating chip module for a peripheral blood circulating tumor cell and an application method of the disposable separating chip module. The disposable separating chip module comprises a micro-fluidic chip, a blood sample storage tank, a PBS sample storage tank, a waste liquid storage tank, an enrichment recycling liquid outlet, a connecting guide pipe (1) of the micro-fluidic chip and the blood sample storage tank, a connecting guide pipe (2) of the micro-fluidic chip and the PBS sample storage tank, a connecting guide pipe (3) of the micro-fluidic chip and the waste liquid storage tank, and a connecting guide pipe (4) of the micro-fluidic chip and the enrichment recycling liquid outlet. The invention further provides the application method of the disposable separating chip module. The micro-fluidic chip adopts a dual-inlet and dual-outlet structure and has an erythrocyte removing efficiency of 100%. A clinical blood sample requires no pretreatment process of attenuation or erythrocyte lysis, so that plenty of time for separating operation can be saved, and the activity of the circulating tumor cell after separation and enrichment can be effectively guaranteed.

Description

technical field [0001] The invention belongs to the technical field of tumor detection, and in particular relates to a disposable separation chip module for circulating tumor cells in peripheral blood and an application method thereof. Background technique [0002] Circulating tumor cells (CTCs) are tumor cells that enter peripheral blood from primary tumor lesions or metastatic lesions. The detection of circulating tumor cells is of great significance to cancer prevention and treatment, and can be effectively applied to in vitro early diagnosis, rapid evaluation of chemotherapy drugs, individualized treatment etc. For routine tumor detection methods, such as imaging, it is difficult to confirm that the tumor is abnormal if it is less than one centimeter. It can be seen from domestic and foreign research that many tumors have tumor cells entering the blood circulation when they are 2-4 mm in size. From this perspective, its significance for early diagnosis cannot be underes...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C12M1/00C12N5/09
CPCC12N5/0693C12N2509/10
Inventor 陈艳庞志强崔彩媚舒伟良
Owner 睿思生命(广东)科技有限公司
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