Automatic blockage-discharging method and automatic blockage-discharging system in blood cell analytical equipment

Abstract

The invention discloses an automatic blockage-discharging method and an automatic blockage-discharging system in blood cell analytical equipment. The automatic blockage-discharging method comprises the following steps: the pressure value in a pipeline is detected in real time, and the pressure value is compared with a preset pressure threshold value to judge whether hole blockage occurs; if hole blockage occurs, hole blockage occurring to a flowing chamber or hole blockage occurring to a sample needle is distinguished according to preset operation time series, and the blockage of the flowing chamber or the blockage of the sample needle is discharged by starting flowing chamber back-flushing blockage-discharging time series or sample needle back-flushing blockage-discharging time series. The automatic blockage-discharging method and the automatic blockage-discharging system in the blood cell analytical equipment automatically judge and start the blockage-discharging time series, have high blockage-discharging success rate, and achieve automatic treatment of blockage-discharging failures.

Description

technical field [0001] The present invention relates to a blood cell analysis device, in particular to a method for automatic fault identification, intelligent processing, and output of blockage removal results applied to flow chambers and sample needle plugging holes in the blood cell analysis device, and a corresponding automatic blockage removal system . Background technique [0002] In the blood cell analysis equipment, the sheath fluid is formed by the push of the sample syringe and the sheath fluid syringe. If the flow chamber or the sample needle is blocked, the following results will result: [0003] 1. After the flow chamber is blocked, the function of the DIFF channel cannot be realized, resulting in the abnormal use of the blood cell analysis equipment. [0004] 2. Under the scheme of using the sheath fluid syringe to push the sheath fluid, if the flow chamber is blocked, the pressure inside the flow chamber will increase suddenly, which will cause the pipeline t...

AI Technical Summary

Problems solved by technology

[0003] 1. After the flow chamber is blocked, the function of the DIFF channel cannot be realized, resulting in the abnormal use of the blood cell analysis equipment

[0004] 2. Under the scheme of using the sheath fluid syringe to push the sheath fluid, if the flow chamber is blocked, the pressure inside the flow chamber will increase suddenly, which will cause the pipeline to collapse

[0005] 3. If the plugging hole judgment and blockage removal treatment are not timely, the blockage material will go deeper, which will further increase the difficulty of blockage removal, thus affecting the normal use of blood cell analysis equipment by customers

This solution cannot fundamentally solve the problem, and this solution has the following deficiencies: 1. The sample preparation pipeline cannot be equipped with a filter; 2. The back suction is not limited by negative pressure enough, and direct back suction will cause cavitation, further Reduce the suction force; 3. If the blocked hole occurs when taking the sample, if the sample is sucked back directly, there is a risk that the sample will enter the syringe; 4. It is uncertain whether the suction will clear the blockage; Inability to empty the flow chamber, resulting in repeated flow chamber blockages

However, this solution has the following disadvantages: 1. The suction back is not limited by negative pressure enough, and direct suction will cause cavitation, further reducing the suction force; 2. When the sample needle is blocked, if the direct suction Then the blood sample may enter the syringe; 3. It is uncertain whether the back suction can clear the blockage; 4. The sheath fluid inlet of most hematology analyzers is on the side, so that the flow chamber cannot be emptied, resulting in repeated flow chamber blockages.

5. The sample preparation pipeline cannot be equipped with a filter

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