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Blood withdrawal device

A technology for collecting tubes and body fluids, which is applied in blood characterization devices, blood sampling devices, medical science and other directions, can solve problems such as increasing production costs, and achieve the effect of easier and more labor-saving combination and disassembly

Inactive Publication Date: 2005-04-13
SARSTEDT AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This rotational locking ensures a more reliable fixation of the combined parts of the lancing device, but its production costs are increased

Method used

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  • Blood withdrawal device
  • Blood withdrawal device

Examples

Experimental program
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Embodiment Construction

[0020] The blood collection device of Figures 1 and 2 comprises a blood collection tube 1 with a dome 10 and a guide sleeve 2 that is shown as a Luer cone in all embodiments, and is housed in the guide sleeve surrounded by a plugging rubber 3 with a pointed The needle head 5 of head bayonet blade 4. In a further variant of the guide sleeve, there is a connection piece or a front of the double needle on the side facing away from the dome. The end of the guide sleeve 2 close to the collection tube 1 is made of an elastic section 6. According to FIGS. 1 and 2, the wall thickness of the sleeve end ring 7 formed here is thinner than other guide sleeves 2. In the upper part of this section 6, the guide sleeves 2 are each made of a hard-deformable plastic material, so that a particularly advantageous non-deformable grip area 8 is formed there for pulling out the collection tube.

[0021] The top of the collection tube 1 is closed with a cap 9 . The cap has a dome 10 which gradually...

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PUM

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Abstract

A device for collecting body fluids, with a collection tube (1). The front end of the collection tube has a plug that can be pierced in a guide sleeve (2) that is placed on the dome cover (10). The guide sleeve is close to the dome cover (10). There is a needle (5) with a rubber valve (3) on the side, the guide sleeve has a connector or the front of the double needle on the side away from the dome, the guide sleeve (2) is composed of a hard deformation material, and is used in its use The front end outside the normal operating grip area (8) is composed of an elastic segment (6), and the dome cover (10) is enlarged in diameter in the connection area relative to the inner diameter of the guide bush (2), where the enlarged The diameter has an elastic section (6) when assembled and used, and this section reasonably covers the connection area of ​​the dome cover (10) in order to achieve a retaining force.

Description

technical field [0001] The invention relates to a device for collecting body fluids, having a thin tube with a front end carrying a pierceable plug in a guide sleeve on a dome cover, and the guide sleeve has a rubber stopper on the side close to the dome cover. A needle with a connector on the side facing away from the dome or the front of a double needle. Background technique [0002] Such a device is required whether blood is taken from a blood vessel or from a blood donation bag or, for example, a urine sample is taken from a collection container. The difficulty that arises in this case is that, when assembling or fitting the guide over the dome, the accordion-like contraction of the plugging rubber surrounding or enveloping the needle exerts a reaction between the guide and the dome. The elastic and restoring forces of the retention force cause the guide sleeve to be pushed away by the dome of the cap. Countermeasures must be taken to avoid this problem. [0003] In t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/154A61B5/145A61B5/15A61M1/00
CPCA61B5/150259A61B5/150351A61B5/150389A61B5/150519A61B5/150572A61B5/15003
Inventor W·萨斯特德特
Owner SARSTEDT AG & CO KG