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A vacuum blood vessel vacuum

A vacuum blood vessel vacuum, automatic instrument and overuse of blood preservation has put forward higher requirements for blood primitive traits stability, the vacuum blood collection technology breakthrough only for safety requirements, its accuracy, the original specimen traits, maintenance time and pipe, tube machine with strength the performance index can be used as the basis of quality evaluation of vacuum blood.

As a common technology of vacuum blood collection, our country has made great progress in the manufacture and application of vacuum blood vessel. Compared with traditional blood sampling techniques, many unique advantages are obvious. If we have a clear understanding of these technologies and features, we will make good use of them. There are many factors affecting the quality of vacuum blood vessel. The following aspects are introduced from four aspects: material, additive, vacuum stability, blood collection needle and needle holder.

After the needle is emitted, the needle core is locked, so that the blood sampling needle can be used only once, and the safety of users can be ensured;

First, the material

1 the material of vacuum blood vessel: blood vessel is common glass tube and plastic tube. The glass tube as the pH value is large, easy to cause hemolysis, and fabrication of glass tube linear slide groove with depth resulting in cell wall thickness change.

Matching 2 tubes: with the popularization of testing equipment of automatic biochemical analyzer and blood analyzer, the outer diameter of tube uniform: 13 mm x 75 mm (16), 13 (16) mm x 100 mm to directly use the machine. The national standard pipe diameter is obviously too small. Directly on the machine can not be fixed and varying degrees of tilt, the possibility of sampling needle damage is greater.

Two, additives

Additives include: anticoagulant, coagulant, buffering agent, protective agent, wall treatment agent, treatment agent, separation of plastic pipe. Its variety, performance and concentration directly affect the blood samples and the results of detection.

Three, vacuum degree

Vacuum blood collection is the collection of specimens, but also the detection tube. The quantitative vacuum in the blood vessel provides power for the blood collection process, and realizes the quantitative collection. Whether the setting of the vacuum degree is accurate will have a great influence on the test result.