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Sampling probe cleaning device and cleaning method for preventing sampling probe from remaining fluid

A technology for cleaning devices and sampling needles, which is applied in the field of medical devices, can solve problems such as the poor effect of liquid hanging on the needle tip of the sampling needle and the complicated structure of the cleaning device for the sampling needle, so as to reduce the probability of liquid hanging on the needle tip of the sampling needle and improve the accuracy of test results , The effect of simple cleaning method

Inactive Publication Date: 2019-06-18
SUZHOU HYBIOME BIOMEDICAL ENG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problem to be solved by the present invention is: in order to solve the technical problem that the structure of the existing sampling needle cleaning device is complicated, and the cleaning method is less effective in avoiding the liquid hanging on the tip of the sampling needle, a cleaning method for cleaning the sampling needle that avoids liquid hanging on the sampling needle is provided. Device and cleaning method

Method used

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  • Sampling probe cleaning device and cleaning method for preventing sampling probe from remaining fluid
  • Sampling probe cleaning device and cleaning method for preventing sampling probe from remaining fluid

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] This embodiment provides a sampling needle cleaning device that avoids liquid hanging on the sampling needle, such as figure 1 and figure 2 As shown, it includes a cleaning cylinder 1, a sampling needle 2 and a cleaning tube 3. The sampling needle 2 can extend into the cleaning cylinder 1 in the vertical direction, and the cleaning tube 3 includes a part whose bottom end is inclined to the central axis of the cleaning cylinder. The cleaning solution outlet section 31 extending into the cleaning tube 1 and the cleaning solution inlet section 32 connected to the cleaning solution outlet section 31, the cleaning solution ejected from the outlet of the cleaning tube 3 is used to clean the needle tip of the sampling needle 2 Outer wall; the tip of the sampling needle 2 has an oblique opening, the opening of the oblique opening faces the cleaning tube 3, and the distance between the high end point and the low end point of the oblique opening 3 is 0.5-0.9mm (such as 0.5mm, 0....

Embodiment 2

[0033] This embodiment provides a sampling needle cleaning method to avoid liquid hanging on the sampling needle, the steps are as follows:

[0034] Turn on the cleaning liquid, so that the cleaning liquid is sprayed out through the liquid outlet of the cleaning pipe 3;

[0035] Move the sampling needle 2 from top to bottom, and when the needle tip touches the cleaning liquid column 4 (judged by the liquid level detection indicator light), continue to move downward for a distance H and then stop to clean the outer wall of the sampling needle 2. The H 2.5-3.5mm (such as 2.5mm, 3mm, 3.5mm);

[0036] After cleaning, the sampling needle 2 is moved from bottom to top, and in the stroke that the sampling needle 2 moves upward for a distance of 5 / 6H, the sampling needle 2 moves upward rapidly at a moving speed of 40-50mm / s (such as 40mm / s , 45mm / s, 50mm / s), in the stroke that the sampling needle 2 moves up 5 / 6H-7 / 6H distance, the sampling needle 2 moves upward slowly, and the moving...

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Abstract

The invention relates to a sampling probe cleaning device and a cleaning method for preventing a sampling probe from remaining a fluid. The cleaning device comprises a cleaning barrel, a sampling probe and a cleaning pipe, wherein the sampling probe can stretch into the cleaning barrel along the vertical direction; the cleaning pipe comprises a cleaning fluid discharging section with the bottom end inclined to the direction of a central axis of the cleaning barrel and with a part stretching into the cleaning barrel; an inclined opening facing the cleaning pipe is formed in a point of the sampling probe; the distance between the high-end point and the low-end point of the inclined opening is 0.5 to 0.9mm; and the included angle between the inclined opening and the horizontal direction is 60to 70 degrees. The cleaning method comprises the steps of starting a cleaning fluid; when the point touches a cleaning fluid column, stopping after continuously downwards moving for 2.5 to 3.5mm; andafter cleaning, during the stroke of upwards moving the sampling probe for 5 / 6H, enabling the speed to be 40 to 50mm / s, and during the stroke of upwards moving the sampling probe for 5 / 6H to 7 / 6H, enabling the speed to be 8 to 10mm / s and the final moving speed to be 250 to 290mm / s, so that the point of the sampling probe is prevented from remaining the fluid.

Description

technical field [0001] The invention relates to a sampling needle cleaning device and a cleaning method for avoiding liquid hanging on the sampling needle, and belongs to the technical field of medical devices. Background technique [0002] In the chemiluminescence system, a sampling needle is required to absorb samples or reagents. Some compact instruments have only one sampling needle, which needs to absorb both samples and reagents. Go to the cleaning station for cleaning. If the cleaning method is unreasonable, it will cause liquid to hang on the tip of the sampling needle. The phenomenon is more serious and has a huge impact on the accuracy of the test results. At the same time, the randomness of the amount of hanging liquid will also affect the repeatability of the sample analysis results, thereby affecting the test accuracy. [0003] In the prior art, the sampling needle cleaning device and cleaning method have been improved to reduce the liquid hanging on the needle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B08B9/023B08B3/02B08B13/00
CPCB08B3/02B08B9/023B08B13/00G01N35/00
Inventor 吴国银黄海进
Owner SUZHOU HYBIOME BIOMEDICAL ENG CO LTD