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A sample processing device and method

A technology for processing devices and samples, applied in sampling devices, preparation of samples for testing, etc., can solve the problems of long sample extraction time, complicated operation, and increased raw material cost, so as to shorten sample extraction time, simplify operation steps, and improve detection. effect of speed

Active Publication Date: 2021-05-18
DIRUI MEDICAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, with the continuous improvement of the detection speed of the instrument, it cannot meet the current situation of the use of the instrument. The disadvantages of the method are as follows: ① method 1, the process is complicated, two punctures are required, and the sample extraction time is long. Generally, the instrument using this method The detection speed is slow; ②Cleaning the puncture needle and the suction line twice causes excessive reagent consumption and increases the detection cost; ③Punctures the test tube cap multiple times, which reduces the life of the puncture needle and increases the risk of chipping of the test tube cap. Risk of clogging of the sample piping system
④The structure of the puncture needle in method 2 is more complicated, which directly increases the cost of raw materials; ⑤Because the structure of the puncture needle is complex, the cleaning volume and cleaning time will be increased when cleaning the puncture needle, which will also affect the detection time and increase the consumption of reagents; ⑥Method 2 At the same time of puncture, there is a risk of blood overflowing the test tube cap from the inside of the test tube through the air release groove, which is easy to cause harm to the testing personnel
Therefore, the device has the problems of low reliability, complicated cleaning, high cost, complicated structure, complicated operation, and slow sample suction operation.

Method used

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  • A sample processing device and method

Examples

Experimental program
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Effect test

Embodiment approach 1

[0027] A sample processing device, such as figure 1 As shown, it includes a sample suction mechanism 8, a first solenoid valve 4, a second solenoid valve 5, a third solenoid valve 9, a puncture needle 2, a constant negative pressure source 6, a constant pressure cleaning liquid source 10 and a controller. The puncture needle 2 is connected to the first solenoid valve 4, the first solenoid valve 4 is connected to the second solenoid valve 5 and the sample suction mechanism 8, the second solenoid valve 5 is connected to the first solenoid valve 4 and the constant negative pressure source 6, and the sample suction mechanism 8 is connected to The first electromagnetic valve 4 and the third electromagnetic valve 9 , the third electromagnetic valve 9 is connected to the sample suction mechanism 8 and the constant pressure cleaning liquid source 10 . The above connections are all connected by suction pipes. Specifically, the puncture needle 2 is connected to the first solenoid valve...

Embodiment approach 2

[0041] The second embodiment is as figure 2 As shown, the difference from the first embodiment is that the second embodiment also includes the second three-way joint 18 and the fourth electromagnetic valve 19, the second three-way joint 18 includes the first joint of the second three-way joint 18, the second joint of the three-way joint 18 The second joint and the third joint of the three-way joint two 18; the second suction pipeline 7 is not directly connected to the suction mechanism 8, but is connected to the first joint of the three-way joint two 18; the second joint of the three-way joint two 18 The connector is connected to the ninth sample suction pipeline 22, and the ninth sample suction pipeline 22 is connected to the sample suction mechanism 8, that is, the second sample suction pipeline 7 is still connected to the sample suction mechanism 8; the third joint of the three-way joint 18 is connected to the tenth Two sample suction pipelines 29, the twelfth sample sucti...

Embodiment approach 3

[0049] Three ways to implement image 3 As shown, the difference from Embodiment 1 is that Embodiment 3 also includes a fifth solenoid valve 27. The specific difference is that: the fifth suction pipeline 14 is connected but not directly connected to the constant negative pressure source 6, but the fifth The sample suction pipeline 14 is connected to the fifth solenoid valve 27 , the fifth solenoid valve 27 is connected to the constant negative pressure source 6 and the eleventh sample suction pipeline 24 , and the eleventh sample suction pipeline 24 is connected to the second atmosphere connector 21 . When the fifth solenoid valve 27 is closed, the fifth sample suction pipeline 14 is connected to the tenth sample suction pipeline 23 (corresponding to image 3 In the state of the fifth solenoid valve 27, the arrow on the left side of the fifth solenoid valve 27 connects the fifth suction pipeline 14 and the tenth suction pipeline 23), when the fifth solenoid valve 27 is opened...

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Abstract

A sample processing device and method relate to the technical field of medical equipment, and solve the problems of low reliability, complicated cleaning, high cost, complex structure, complicated operation, and slow sample suction operation existing in the existing device and method. The device includes: sample suction Mechanism, puncture needle, controller, first solenoid valve, second solenoid valve, constant negative pressure source, third solenoid valve and constant pressure cleaning liquid source. The method includes: opening the second electromagnetic valve, so that the internal pressure of the first electromagnetic valve to the third electromagnetic valve is the same as the pressure of the constant negative pressure source; closing the second electromagnetic valve, and the controller controls the movement of the puncture needle so that the puncture needle penetrates the test tube, the During the process, the first electromagnetic valve is opened to make the air pressure in the test tube the same as the air pressure between the first electromagnetic valve and the sample suction mechanism; the puncture needle stops when it moves to the sample suction position, and the sample suction mechanism sucks the sample; the puncture needle resets. The invention has the advantages of high reliability, simple and convenient cleaning, low cost, simple structure, convenient operation and quick sample suction operation. It is suitable for aspirating samples such as blood samples.

Description

technical field [0001] The invention relates to the technical field of medical equipment, in particular to a sample processing device and method. Background technique [0002] The blood cell analyzer is mainly a kind of clinical basic equipment for detecting white blood cells, red blood cells, platelets, hemoglobin, etc. in the human body. The blood cell analyzer needs to extract a certain amount of blood samples, and then mix them with various reagents , reaction, and then use different methods for detection, so there are many methods for blood sample extraction. In an automatic hematology analyzer, sample extraction requires a puncture needle to pass through the blood sample test tube, enter the test tube and the needle tip of the puncture needle is sucked. The sample hole is below the liquid level of the blood sample, and then the controller controls the sample suction mechanism to extract the sample. After the quantitative sample is drawn, the puncture needle is pulled o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N1/14G01N1/38
CPCG01N1/14G01N1/38
Inventor 田宝东赵滨
Owner DIRUI MEDICAL TECH CO LTD