What are the blood collection needle tester tester standards

The common method of blood testing is venous blood collection, and the simple action of
intravenous blood collection contains many skills.
The tools needed for intravenous blood collection are blood collection needles, vacuum tubes, tourniquets and so on
.
Vacuum blood collection method is one of the methods of intravenous blood collection, and the basic principle of vacuum blood collection method is to use negative pressure to control the amount of blood collection, and one end of the duplex needle is pierced into the vein; After the blood collection is returned, the other end is inserted into the vacuum test tube, the blood automatically flows into the test tube under the action of negative pressure, and when the negative pressure in the blood collection blood collection is exhausted, the blood flow stops before the vacuum collection blood collection is
removed.
Blood collection methods, puncture techniques, needle quality, vacuum tube quality, end-of-blood collection treatment, etc.
will all affect the effectiveness
of blood samples.
Today, Wesa Technology focuses on explaining to you how to judge the quality of
blood collection needles.
Testing the quality of the blood collection needle requires the use of professional testing equipment, that is, the blood collection needle tester
.
The lancet tester is an efficient testing device for testing the physical properties of the lancet
.
According to YY/T 1618-2018 standard requirements for disposable human venous blood sample collection needles, all the physical characteristics of the blood collection needles need to be qualified after the standard is met
.
The physical characteristics that need to be tested by the blood collection needle are connection firmness, lumen smoothness, sealing, lubricant, color mark, etc.
In addition, the needle holder and the needle handle, the needle tube, the needle tip, the protective sleeve, the needle handle, the hose, and the needle holder must meet the requirements
.
In YY/T 1618-2018 disposable human venous blood sample collection needle standards, the requirements for the firmness of the connection are as follows: 1.
The axial static tension force of 20 N is applied to the connection between the needle tube and the needle holder/needle handle, which lasts for 10 S and should be continuously opened or loosened
.
2.
The connection between the soft connection needle hose and the shaft and the hose and the needle holder should be able to withstand 15N or a static axial pull force with an elongation of 50% (the first to reach) for 10 S, and there is no loosening or separation
at each connection.
Not only the tightness of the connection, but also the unimpeded lumen of the inner cavity, the internal cavity of the acquisition needle should be unobstructed, according to the relevant test, at 20kpa water pressure, the flow of water should meet the following regulations: the nominal (imperial) outer diameter of the needle at the end of the venous puncture is 0.
5 (25G) mm, and the minimum flow rate is 3.
2 ml/min
.
The nominal (imperial) nominal (imperial) outer diameter of the needle at the venipuncture end is 0.
55 (24 G) mm and the minimum flow rate is 3.
8 ml/min
.
The nominal (imperial) nominal (imperial) outer diameter of the needle at the venipuncture end is 0.
6 (23 G) mm and the minimum flow rate is 5.
0 ml/min
.
The nominal (imperial) apical needle is nominally (imperial) with an outer diameter of 0.
7 (22 G) mm and a minimum flow rate of 11.
0 ml/min
.
The needle at the venipuncture end is nominally (imperial) with an outer diameter of 0.
8 (21 G) mm and a minimum flow rate of 21 ml/min
.
The nominal (imperial) o.
7 (imperial) outer diameter of the needle at the venipuncture end is 0.
9 (20 G) mm and the minimum flow rate is 36 ml/min
.
The test method is as follows: Connect the acquisition needle to the test device so that the outlet end is kept at the same level as the liquid level, pressurize the system with an inflatable ball and maintain it at (20 Shi 1) kPa, and measure the volume
of liquid flowing out of the acquisition needle within 1 min.
The above is the introduction of the blood needle tester, provided by Wesa Technology originally, I hope to help
you.