Method and device for collecting sample by full-automatic blood cell analyzer

A blood cell analyzer and sample collection technology, applied in the direction of analysis materials, instruments, etc., can solve the problems of mutual penetration, changing the concentration of whole blood samples, inaccurate measurement, etc., and achieve the effect of preventing penetration

Inactive Publication Date: 2013-01-30
山东美医林电子仪器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to overcome the inaccurate measurement caused by air in the sampling needle and residual samples on the inner and outer walls of the sampling needle in the sample collection of the existing three-differentiation or five-differentiation blood cell analyzer, although the measurement problem is solved when the diluent is used in the sampling needle, dilution will occur The interface between the l

Method used

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  • Method and device for collecting sample by full-automatic blood cell analyzer
  • Method and device for collecting sample by full-automatic blood cell analyzer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] Embodiment 1, a sample collection device suitable for automatic blood cell analyzers, including a sampling needle 1, the inner hole of the sampling needle is connected to the diluent filling equipment through a pipeline, and it is characterized in that: the sampling needle is covered with a sampling needle Outer wall cleaning part 3, waste liquid outlet 19 arranged up and down and cleaning diluent inlet 20 are arranged on the side wall of the outer wall cleaning part of the sampling needle, the waste liquid outlet is connected with the waste liquid collection device, and the diluent inlet for cleaning is connected to the diluent supply The device is connected.

Embodiment 2

[0018] Embodiment 2, a sample collection device suitable for automatic blood cell analyzers, including a sampling needle 1, the inner hole of the sampling needle is connected to the diluent filling equipment through a pipeline, and it is characterized in that: the sampling needle is covered with a sampling needle Outer wall cleaning part 3, waste liquid outlet 19 arranged up and down and cleaning diluent inlet 20 are arranged on the side wall of the outer wall cleaning part of the sampling needle, the waste liquid outlet is connected with the waste liquid collection device, and the diluent inlet for cleaning is connected to the diluent supply The device is connected. The waste liquid collection device includes a waste liquid pump 4 and a waste liquid bottle 5 connected to the waste liquid outlet. The sampling needle is equipped with a sampling needle sealing ring 2 outside. A syringe pump sealing ring 7 for sealing is installed between the syringe pump push rod 6 of the syrin...

Embodiment 3

[0019] Embodiment 3, using the aforementioned sample collection method suitable for a sample collection device of an automatic blood cell analyzer, is characterized in that: when drawing a whole blood sample, the lower end of the sampling needle is retracted to the middle position of the cleaning part on the outer wall of the sampling needle , the push rod of the syringe pump goes down, so that the upper end of the push rod of the syringe pump is lower than the diluent inlet pipeline, the waste liquid pump runs to generate negative pressure, the lower end of the sampling needle retracts to the middle position of the outer wall cleaning part of the sampling needle, and the inner wall cleaning solenoid valve The power is turned on, the diluent pump runs, the diluent flows out from the inside of the sampling needle, and is sucked away at the waste liquid outlet of the cleaning part on the outer wall of the sampling needle. The push rod goes up to the top, and then goes down for a ...

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Abstract

The invention discloses a method and a device for collecting a sample by a full-automatic blood cell analyzer, belongs to a blood detection device, and particularly relates to a method and a device for collecting the sample by the full-automatic blood cell analyzer used in a blood routine test. The device comprises a sampling needle, and an inner hole of the sampling needle is connected with a diluent injection device through a pipeline. The method is characterized by comprising the steps that a sampling needle outer wall cleaning element is sleeved outside the sampling needle; a waste fluid outlet and a diluent inlet for cleaning in up and down arrangement are arranged at the lateral wall of a housing of the sampling needle outer wall cleaning element; the waste liquid outlet is connected with a waste liquid collecting device, and the diluent inlet for cleaning is connected with a diluent supply device. The sampling needle is full of diluent; the diluent and a whole blood sample are isolated by an air column; the outer wall of the sampling needle is cleaned by the sampling needle outer wall cleaning element; the front end of the whole blood sample is removed before the whole blood sample is injected; and the inner wall of the sampling needle is cleaned after the whole blood sample is injected, so that the metering accuracy for sample collection is ensured.

Description

technical field [0001] The invention belongs to blood detection equipment, in particular to a sample collection method and device for an automatic blood cell analyzer used in clinical blood routine testing items. Background technique [0002] The automatic hematology analyzer used in clinical blood routine projects requires a small amount of blood collection. The three- or five-differentiation hematology analyzer needs to use about 10-60 microliters of whole blood samples for measurement. Such a small amount of sample collection is prone to the following problems: ①The air in the sampling needle pipeline, when the syringe pump draws the sample, the total volume of the air will change due to the pressure difference, which will affect the inaccurate number of samples collected. ②Every time the sample is drawn and filled, The amount of residual sample on the inner wall or outer wall of the sampling needle is inconsistent, which will lead to the problem of inaccurate sample addi...

Claims

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Application Information

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IPC IPC(8): G01N35/10
Inventor 王振宇李传龙荆全振刘拯陈忠武
Owner 山东美医林电子仪器有限公司
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