Unlock instant, AI-driven research and patent intelligence for your innovation.

Sample tube for quantitatively collecting liquid

A liquid sample, quantitative collection technology, applied in the field of medical equipment, can solve the problems of high cost, difficult to operate the Pasteur dropper, not suitable for one-time use, etc., and achieve the effect of simple operation, improved efficiency and detection accuracy

Inactive Publication Date: 2016-10-12
JIANGSU ORANOXIS BIOLOGICAL DIAGNOSIS
View PDF12 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Different companies in the market have developed different micro-quantitative blood or other liquid devices, such as Pasteur pipettes, which are marked on the wall of the tube to achieve quantitative sampling, but the extrusion force of the Pasteur pipette during the collection process Difficult to control, especially micro-sampling, such as 5 microliters, 10 microliters, the Pasteur dropper is difficult to operate, or requires professional training; another example is a pipette, sampling is very accurate, suitable for repeated use, not suitable for one-time use Use, the cost is high, and there are great challenges in actual operation. In order to meet the needs of the market, it is necessary to develop a low-cost product that automatically and quantitatively collects trace liquid samples, especially for sampling on the immunochromatography detection platform.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Sample tube for quantitatively collecting liquid
  • Sample tube for quantitatively collecting liquid
  • Sample tube for quantitatively collecting liquid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Such as figure 1 Shown:

[0023] The capillary 1 is made of transparent polypropylene plastic by an extrusion process, and the insert 2 can be made of transparent polyethylene terephthalate by an extrusion process, and the insert 2 is treated with hydrophilicity in a later stage. The width of the insert is slightly larger than the inner diameter of the thin tube, which is convenient for the insert to be fixed in the thin tube. For example, to collect a fingertip blood sample of 5 microliters, the thin tube can be extruded from polypropylene material with an inner diameter of 2 mm and a wall thickness of 0.15 mm in an extrusion machine, and is made of polyethylene terephthalate by extrusion process Get a 0.3 mm thick sheet, do hydrophilic treatment, and then cut out a 2 mm (positive tolerance 0.1 mm) square sheet. Use the insert end of the sample tube to touch the fingertip blood, the blood sample will be automatically sucked into the tube, and stop automatically when ...

Embodiment 2

[0025] Such as figure 2 Shown:

[0026] The thin tube 1 and the extrudable sac structure are made of polyethylene plastic using a blow molding process, which is the same as the manufacturing process of the Pasteur dropper, and the air hole 3 can be pierced by a fine needle. The manufacturing process of the insert is the same as in the first embodiment. For example, to collect a fingertip blood sample of 5 microliters, a dropper with an inner diameter of 2 millimeters and an outer diameter of 2.6 millimeters is prepared at the opening, and a vent hole is pricked on the capsule. When the tip of the insert is in contact with fingertip blood during sampling, and the vent hole is unblocked, the blood sample will be automatically sucked into the thin tube, and the blood will stop automatically when it reaches the other end of the insert, and the collection of 5 microliters of fingertip blood will be completed. If the immunochromatography technique is used for detection, after col...

Embodiment 3

[0028] Such as image 3 Shown:

[0029] The thin tube 1 is made of polypropylene plastic using a tube drawing machine. One end of the thin tube 1 is hot-melt sealed and filled with a specific volume of liquid. The thin tube 1 is encapsulated by a liquid film, and a There are breakage marks, and the manufacturing process of the insert is the same as that in Embodiment 1, and a vent hole 3 is provided between the insert and the liquid film. For example, to collect a fingertip blood sample of 5 microliters, the thin tube is made of polypropylene plastic using a tube drawing machine, with an outer diameter of 3.1 mm, an inner diameter of 2.0 mm, and a length of 75 mm. One end is melted and sealed, and a fracture mark is carved at a distance of 5 mm from the sealed end, poured into 0.14 ml of diluent, and then added with 0.10 ml of silicone oil, and centrifugally packaged. The manufacturing method of the insert is the same as that in Embodiment 1, the positive tolerance of the le...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a sample tube for quantitatively collecting liquid. The sample tube comprises a thin tube and a hydrophilic inserting piece, wherein the thin tube is used for collecting the liquid and storing the liquid; the thin tube is of a through cavity structure; the hydrophilic inserting piece is fixedly arranged in the thin tube; the edge of the hydrophilic inserting piece is in contact with the tube wall of the thin tube; a siphon structure is formed by the hydrophilic inserting piece and the thin tube; one end of the hydrophilic inserting piece is flush with an opening in one end of the thin tube; when one end of the hydrophilic inserting piece is in contact with the liquid, a liquid sample can be siphoned into the thin tube, the liquid can automatically stop when flowing to the other end of the hydrophilic inserting piece, the inner diameter of the thin tube and the length of the hydrophilic inserting piece can be regulated according to demands, control on sampling amount is realized, and the use is convenient.

Description

technical field [0001] The invention belongs to the field of medical equipment, and in particular relates to a sample tube for quantitatively collecting liquid. Background technique [0002] Accurate collection of micro-volume liquid samples has a wide range of demands in the field of diagnostic testing. For example, in the fields of point of care testing, food safety testing and environmental testing using immunochromatography technology, accurate micro blood or other liquid samples can help doctors or testers to obtain more accurate test results. Different companies in the market have developed different micro-quantitative blood or other liquid devices, such as Pasteur pipettes, which are marked on the wall of the tube to achieve quantitative sampling, but the extrusion force of the Pasteur pipette during the collection process Difficult to control, especially micro-sampling, such as 5 microliters, 10 microliters, the Pasteur dropper is difficult to operate, or requires p...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): G01N1/14
CPCG01N1/14G01N2001/149
Inventor 赵彬王德群
Owner JIANGSU ORANOXIS BIOLOGICAL DIAGNOSIS