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Blood taking tool anti-counter-flow structure and blood taking needle with same

A technology of anti-reflux and blood collection needles, which is applied in the fields of medical science, sensors, diagnostic records/measurement, etc., can solve the problems of complex structure, complicated manufacturing process and high production cost of anti-reflux, and achieve simple structure, good effect of anti-reflux, good stability effect

Active Publication Date: 2015-06-24
HEBEI XINLE MEDICAL EQUIP SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, if the tourniquet is removed first, the blood in the blood collection tube may flow back due to the sharp drop in the pressure inside the blood vessel.
In addition, when the position of the blood collection tube is higher than that of the blood vessel, backflow may also occur due to potential energy
[0004] The existing anti-backflow structure cannot effectively prevent backflow, and the anti-backflow structure is relatively complicated, the manufacturing process is complicated, and the production cost is high

Method used

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  • Blood taking tool anti-counter-flow structure and blood taking needle with same
  • Blood taking tool anti-counter-flow structure and blood taking needle with same
  • Blood taking tool anti-counter-flow structure and blood taking needle with same

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Embodiment Construction

[0035] Attached below Figure 1-7 The present invention is further described in detail with specific embodiments.

[0036] as attached figure 1 A blood collection needle is shown, which includes a blood collection tool anti-reflux structure and a venipuncture needle 1 and a rubber stopper puncture needle 6 fixedly arranged on the top of the anti-reflux structure. The anti-reflux structure restricts that liquid can only flow from the venipuncture needle 1 to the rubber stopper puncture needle 6 . The rubber stopper puncture needle 6 is used to be inserted into the vacuum blood collection tube and connected with the vacuum blood collection tube.

[0037] The anti-backflow structure of the blood collection tool includes a topped cylindrical body 8 with an internal flow path and a topped straight cylindrical anti-backflow rubber sleeve 3 arranged on the internal flow path of the cylindrical body 8. The cylindrical body 8 The inside is a cavity 4, and the anti-backflow rubber sl...

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Abstract

The invention relates to the field of blood taking equipment for medical inspection processes, in particular to a blood taking tool anti-counter-flow structure and a blood taking needle with the same. The blood taking tool anti-counter-flow structure comprises a barrel-shaped body with a top and an internal flow path and a straight-barrel-shaped anti-counter-flow rubber sleeve which is provided with a top and arranged on the internal flow path of the barrel-shaped body, a through hole is formed in the top wall of the barrel-shaped body, and the peripheral edge of the outer wall of the top of the anti-counter-flow rubber sleeve is in sealing contact with the peripheral edge of the inner wall of the through hole. The anti-counter-flow structure of the sampling taking needle is arranged between a vein puncture needle and a rubber plug puncture needle. According to the blood taking tool anti-counter-flow structure and the blood taking needle with the same, the blood taking needle has the better anti-counter-flow effect, and is convenient to use, safe and sanitary. The anti-counter-flow rubber sleeve is simple in structure, is overall of a complete straight-barrel-shaped structure, and is good in stability in the use process.

Description

technical field [0001] The invention relates to the field of blood collection equipment used in the medical examination process, in particular to an anti-backflow structure of a blood collection tool and a blood collection needle containing the structure. Background technique [0002] Vacuum blood collection device consists of three parts: vacuum blood collection tube, front puncture needle (including straight needle and scalp type front puncture needle), and needle holder. Vacuum blood collection tube is its main component, which is mainly used for the collection and preservation of blood samples. Vacuum blood collection tubes are preset with a certain amount of negative pressure during the production process. After the current puncture needle enters the blood vessel, blood will automatically flow into the blood collection tube due to the negative pressure in the blood collection tube. [0003] Stop blood collection when the pressure in the vacuum blood collection tube is ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A61B5/153
CPCA61B5/15003A61B5/154
Inventor 韩永波孟磊鑫张世杰
Owner HEBEI XINLE MEDICAL EQUIP SCI & TECH
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