Blood collection tube capable of adjusting blood transfusion speed

Abstract

The invention discloses a blood collection tube capable of adjusting blood transfusion speed. The blood collection tube comprises a blood gathering tube, a soft plug and a plastic cover, and is characterized in that an inserting port is formed in the top of the plastic cover; an annular pit is arranged on the sidewall, close to the top, inside the plastic cover; an annular seal groove in which the opening of the blood gathering tube is inserted is formed in the soft plug, and the plug body on the outer side of the annular seal groove is embedded into the annular pit; a longitudinal groove which extends to the annular pit from the edge is formed in the inner wall of the plastic cover; a longitudinal opening is formed in the sidewall of the plastic cover; an elastic strip is arranged inside the longitudinal opening; the elastic strip is connected to one side, away from the top of the plastic cover, of the longitudinal opening; a bump which protrudes out of the inner surface of the sidewall of the plastic cover is connected with the free end of the elastic strip, and a gap is reserved between the bump and the annular pit; an elastic arm which extends downwards along the outer wall of the blood gathering tube is arranged on the edge of the plastic cover; and a notch is formed at the side, close to the outer wall of the blood gathering tube, of the elastic arm. The blood collection tube disclosed by the invention can avoid the generation of negative pressure inside veins nearby a puncture needle and can relieve discomfort caused by blood drawing.

Description

technical field [0001] The invention relates to a medical blood collection device, in particular to a blood collection tube capable of regulating blood transfusion speed. Background technique [0002] my country is a country with a large population. With the improvement of living standards, people pay more attention to their own health. The medical consumables in disease treatment and preventive physical examination have increased greatly, especially the consumption of blood collection tubes used as the main basis for diagnosis. Most of the blood collection tubes are vacuumed and have medicine attached. After venipuncture, the other end of the puncture needle hose is inserted into the blood collection tube, and the venous blood is drawn into the blood collection tube by the internal negative pressure of the blood collection tube. Although it is fast, it is different from blood drawing with a needle tube. When drawing blood with a needle tube, the suction force can be adjusted ...

AI Technical Summary

Problems solved by technology

[0002] my country is a country with a large population. With the improvement of living standards, people pay more attention to their own health. The medical consumables in disease treatment and preventive physical examination have increased greatly, especially the consumption of blood collection tubes used as the main basis for diagnosis. Most of the blood collection tubes are vacuumed and have medicine attached. After venipuncture, the other end of the puncture needle hose is inserted into the blood collection tube, and the venous blood is drawn into the blood collection tube by the internal negative pressure of the blood collection tube. Although it is fast, it is different from blood drawing with a needle tube. When drawing blood with a needle tube, the suction force can be adjusted through the force applied to keep the whole blood drawing process at a balanced negative pressure. It changes from high to low. In the initial high negative pressure, the blood in the vein near the puncture needle will be drawn out at a high speed, and a negative pressure will be generated in the vein near the puncture needle, and the tip of the needle will also adsorb the blood vessel wall. Increase the discomfort caused by blood drawing, still needs to be improved

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