Double-layer gas-protection vacuum blood collection tube

Abstract

The invention discloses a double-layer gas-protection vacuum blood collection tube. The double-layer gas-protection vacuum blood collection tube comprises a tube body and a sealed rubber plug, the tube body comprises an outer tube and an inner tube, the outer tube and the inner tube are formed integrally in an injection-molding mode, the upper end of the outer tube is higher than that of the inner tube, and an interlayer cavity is formed between the outer tube and the inner tube; the side wall of the sealed rubber plug is provided with multiple rounds of elastic bulge loops, the sealed rubber plug is clamped with the inner wall of the outer tube through the bulge loops in a sealed mode, the diameter of the bottom end of the sealed rubber plug is the same as that of the inner tube, and the sealed rubber plug stretches into the inner tube and is buckled with the inner tube. According to the double-layer gas-protection vacuum blood collection tube, by arranging the outer tube and the inner tube which are formed into one in the injection-molding mode, and connecting a crimpling short tube to the lower end of the inner tube, the blood volume of a vacuum blood collection tube can be accurately controlled, the sealing property between the sealed rubber plug and a single tube can be improved, and the expiration date of the vacuum blood collection tube is prolonged.

Description

technical field [0001] The invention relates to a vacuum blood collection tube, in particular to a double-layer gas-protected vacuum blood collection tube. Background technique [0002] There are a lot of intravenous infusion equipment used clinically in the hospital, including vacuum blood collection test tubes. When blood is collected clinically, anticoagulant blood is required for some test items, so a certain amount of anticoagulant is often pre-stored in the vacuum blood collection tube, so there are strict requirements on the amount of blood to be collected, and the amount of blood must be accurate. When the blood collection is not well grasped, there will be more or less blood. When the blood is too much, it is easy to coagulate and cannot be detected. When the blood is small, the test result will be affected. In addition, in the use of ordinary vacuum blood collection tubes, the traditional single tube structure is relatively easy to break, and the sealing performan...

AI Technical Summary

Problems solved by technology

If the blood collection is not done well, there will be more or less blood. When the blood is too much, it is easy to coagulate and cannot be detected. When the blood is small, the test result will be affected.

In addition, in the use of ordinary vacuum blood collection tubes, the traditional single tube structure is relatively easy to break, and the sealing performance between the single tube sealant plug and the single tube is not good

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