Wiper for cleaning sampling needle

A technology of sampling needles and swabs, which is applied in the field of blood cell analysis equipment, can solve the problems of difficult production and achieve the effects of convenient pipeline layout, gas saving, and improved cleaning effect

Active Publication Date: 2008-01-09
SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD +1
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0020] a. The cavity through which the sampling needle passes is divided into four sections. The difference from the swab in the 5,592,959 patent is that an acute-angled cone surface transition is added between the cavity with a smaller diameter in the upper section and the cavity with a larger diameter in the lower section. A cavity with a larger diameter is added at the liquid discharge port, which avoids the disa

Method used

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  • Wiper for cleaning sampling needle
  • Wiper for cleaning sampling needle
  • Wiper for cleaning sampling needle

Examples

Experimental program
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Embodiment Construction

[0038] Please refer to FIG. 1 to FIG. 2 , the swab 11 for cleaning the sampling needle of the present invention includes a swab body 35 , a first liquid flow tube 31 and a second liquid flow tube 32 . The central position of the swab body 35 axially penetrates to form a cavity, the first liquid flow pipe 31 is the liquid inlet pipe 31 for the cleaning liquid to flow in, and the second liquid flow pipe 32 is used for discharging the waste liquid after cleaning The discharge pipe 32, the cross-sectional area of ​​the liquid inlet pipe 31 is smaller than the cross-sectional area of ​​the liquid discharge pipe 32, and the liquid inlet pipe 31 and the liquid discharge pipe 32 are installed on the swab body horizontally (that is, the radial direction of the swab body) 35 and communicate with the cavity, and in the direction of gravity, the liquid inlet pipe 31 is located below the liquid discharge pipe 32 . Certainly, the central cavity axis of the swab 11 is not limited to be place...

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Abstract

The swab unit for cleaning sampling needle includes one swab body possessing one axial cavity, and one first fluid flow tube and one second fluid flow tube mounted onto and communicated with the swab body. The first fluid flow tube and the second fluid flow tube have some height difference in the gravity direction. The swab body has one first ring cavity and one second ring cavity around the axial cavity and with one hole separately. The first fluid flow tube, the first ring cavity and the axial cavity are communicated successively; and so do the second fluid flow tube, the second ring cavity and the axial cavity. The swab unit with ring cavities can eliminate the residual blood sample and dry the cleaning liquid completely in high cleaning effect.

Description

technical field [0001] The invention relates to the field of blood cell analysis equipment, in particular to a swab used in a blood cell analyzer. Background technique [0002] During the use of the blood cell analyzer, after the blood sample is drawn from the test tube, the blood sample will be left on the inner and outer surfaces of the sampling needle and the sample distribution channel. Before collecting the next sample for analysis, these residual blood samples need to be cleaned. In order to avoid affecting the detection of the next blood sample. [0003] In order to meet the cleaning requirements, the commonly used working principle is to use a flowing cleaning solution to wash away the blood sample adsorbed in the channel to be cleaned. This cleaning system usually includes: [0004] a) One or more containers containing cleaning fluid capable of generating positive pressure inside: [0005] Provides cleaning fluid to the system and provides power for the drive of ...

Claims

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Application Information

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IPC IPC(8): B08B9/02G01N35/10
Inventor 李乐昌颜彦
Owner SHENZHEN MINDRAY BIO MEDICAL ELECTRONICS CO LTD
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