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Blood sampling device for vacuum blood sampling tube, sample analyzer and blood sampling method

A technology of vacuum blood collection tubes and sampling needles, applied in the direction of sampling devices, etc., can solve the problems of poor deflation effect, puncture debris, complex structure, etc., and achieve the goals of shortening the puncture time, avoiding pollution, and simplifying the structure of the liquid path Effect

Pending Publication Date: 2022-07-12
ZYBIO INC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the current auto-sampling or closed-sampling blood cell analyzers, in order to release the residual pressure in the test tube, a special sampling needle structure is usually used to deflate. A double-tube needle is introduced in US Patent US19970815011, which has a separate The release pressure channel has a good deflation effect, but its structure is complex, costly and difficult to clean. Most medical device manufacturers use needles with lateral deflation grooves. This needle is simpler in structure than US Patent US19970815011, but the The gas effect is not good, the debris generated by the puncture is more and it is also not easy to clean

Method used

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  • Blood sampling device for vacuum blood sampling tube, sample analyzer and blood sampling method

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Effect test

Embodiment 1

[0039] like figure 1 As shown, the present invention provides a blood collection device for a vacuum blood collection tube, the blood collection device includes a puncture sampling needle 1, a sampling syringe 2, a switching element, a negative pressure source 4, a liquid supply device 5, a cleaning swab 6, Rubber hose, rigid connection module 8, waste liquid collection device 9, drive mechanism.

[0040] The puncture sampling needle 1 is connected to a No. 1 rubber tube 71, and the No. 1 rubber tube 71 is connected to the inlet of the first switching element 31 through a rigid connection module 8. The rigid connection module 8 is an integral molding material with strong rigidity, and a pipeline is opened inside it. , the outlet of the first switching element 31 is communicated with the inlet of the second switching element 32 , the inlet of the third switching element 33 and the inlet of the sampling syringe 2 through the internal pipeline of the rigid connection module. The o...

Embodiment 2

[0060] The difference between this embodiment and Embodiment 1 is that the fourth switching element 34 is integrated on the rigid connection module 8 .

Embodiment 3

[0062] The difference between this embodiment and Embodiment 1 is that the negative pressure source that provides negative pressure for the waste liquid collecting device 9 and the negative pressure source 4 are the same negative pressure source.

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Abstract

The invention relates to the technical field of clinical medicine detection equipment, and discloses a blood collection device for a vacuum blood collection tube, which comprises a puncture sampling needle, a sampling injector, a switching element, a negative pressure source, a liquid supply device, a cleaning swab, a rubber tube, a waste liquid collection device and a driving device. According to the blood sampling device, the residual negative pressure in the vacuum blood sampling tube is balanced through the preset negative pressure, the pressure at the needle opening after the puncture sampling needle is pulled out of the vacuum blood sampling tube is balanced through the environmental pressure, a traditional deflation channel is not needed, cross contamination is avoided to the maximum extent, the requirement for the structure of the puncture sampling needle is reduced, and the cost is reduced. Only one time of puncture is needed for sampling each time, generated puncture scraps are few and easy to clean, and therefore the puncture time is shortened, and the service life of the sampling needle is prolonged. Meanwhile, through the cooperation of the liquid path and the cleaning swab, the inner wall and the outer wall of the puncture sampling needle can be cleaned in time after sampling is finished, and the detection efficiency of the instrument is improved.

Description

technical field [0001] The invention relates to the field of medical testing equipment, in particular to a blood collection device, a sample analyzer and a blood collection scheme for vacuum blood collection tubes. Background technique [0002] In the current automatic sampling or closed sampling hematology analyzer, in order to release the residual pressure in the test tube, a special sampling needle structure is usually used to deflate. The pressure release channel has a good deflation effect, but its structure is complicated, the cost is high, and it is not easy to clean. Most medical device manufacturers use a needle with a lateral deflation groove. The gas effect is not good, the puncture produces more debris, and it is also difficult to clean. SUMMARY OF THE INVENTION [0003] In order to overcome the above technical problems, the present invention provides a blood collection device for a vacuum blood collection tube, which balances the residual negative pressure in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/14
CPCG01N1/14
Inventor 刘玉锋叶群吴文杨一杰
Owner ZYBIO INC
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