The invention relates to the technical field of clinical
medical instruments, in particular to a vacuum
blood collection tube and a method thereof capable of directly separating
blood plasma. The vacuum
blood collection tube comprises a
blood collection tube body, an inner tube, a rubber plug and a
filter element. The vacuum
blood collection tube is characterized in that the
blood collection tube inner tube is arranged in the
blood collection tube body, the rubber plug is disposed at the top of the blood collection tube body, the structure of the rubber plug is close to a plug shape, a semicircle groove is disposed at the center of the upper portion of the rubber plug structure, left and right ends of the lower portion of the rubber plug are embedded into the blood collection tube body to be connected with the blood collection tube inner tube, a
blood plasma outlet is disposed in the middle of the bottom of the blood collection tube inner tube, a
blood plasma collecting chamber is mounted below the blood
plasma outlet, a filtering membrane is arranged on the upper portion of the blood
plasma outlet of the blood collection tube inner tube, the
filter element is arranged on the upper portion of the filtering membrane, a buffer plate is mounted on the
filter element, consequently a blood collection chamber is formed in the blood collection tube inner tube, and a layer of
anticoagulant is disposed on the inner wall of the blood collection tube inner tube. The vacuum blood collection tube and the method thereof capable of directly separating the blood
plasma have the advantages that
physical form differences of blood visible components and plasma components are utilized, the blood plasma can be rapidly separated, and the vacuum blood collection tube and the method thereof are simple, convenient, safe and rapid.