Views: 0 Author: Site Editor Publish Time: 2022-09-19 Origin: Site
The vacuum blood sampler consists of three parts: the vacuum blood collection vessel, the blood collection needle (including straight needle and scalp blood collection needle), and the needle holder. The vacuum blood collection tube is the main component, which is mainly used for blood collection and preservation. A certain amount of negative pressure is preset in the production process. When the blood collection needle enters the blood vessel, due to the negative pressure in the blood collection tube, the blood automatically flows into the blood collection tube; At the same time, various additives are preset in the blood collection tube, which can fully meet the requirements of multiple comprehensive blood tests in the clinic, and is safe, closed and convenient for transportation.
Vacuum blood collection vessels are generally divided into the following categories:
1. Dry empty tube without additives: the inner wall of the blood collection tube is evenly coated with the agent (silicone oil) to prevent wall hanging. It uses the principle of natural coagulation of blood to make blood coagulate, and centrifuges the serum after it is naturally precipitated. It is mainly used for serum biochemistry (liver function, kidney function, myocardial enzyme, amylase, etc.), electrolytes (serum potassium, sodium, chloride, calcium, phosphorus, etc.), thyroid function, drug detection, AIDS detection, tumor markers, and serum immunology.
2. Coagulation promoting tube: the inner wall of the blood collection tube is evenly coated with silicone oil to prevent wall hanging, and Desheng coagulant is added. The coagulant can activate fibrin protease, make soluble fibrin become insoluble fibrin polymer, and then form stable fibrin clot. If you want to get results quickly, you can use the coagulant tube. It is generally used for emergency biochemistry.
3. Blood collection tube containing separating gel and coagulant: the tube wall is silicified and coated with coagulant to accelerate blood coagulation and shorten the test time. Separation gel is added in the tube. The separation gel has a good affinity with PET tube and really plays an isolation role. Generally, even on an ordinary centrifuge, Desheng serum separation gel can completely separate the liquid components (serum) and solid components (blood cells) in the blood and accumulate in the test tube to form a barrier. There is no oil drop in the serum after centrifugation, so the machine will not be blocked. It is mainly used for serum biochemistry (liver function, kidney function, myocardial enzyme, amylase, etc.), electrolytes (serum potassium, sodium, chloride, calcium, phosphorus, etc.), thyroid function, drug detection, AIDS detection, tumor markers, and serum immunology.