Syringe tightness positive pressure tester GB15810-2019

The positive pressure value of syringe tightness will directly reflect the quality of the syringe tightness, so the positive pressure test report of syringe tightness is also an important basis for judging the quality of
the syringe.

Today, Viscia Technology will elaborate with you on the syringe fit positive pressure tester
.

Quality is always the first, pay attention to quality to go long
.

Medical device syringe manufacturers are no exception, many syringe manufacturers in order to ensure the quality of the product of the syringe, but also with the attitude of being responsible for the health of patients, will buy syringe testers to ensure that the syringes in circulation are qualified products
.

The syringe tester includes the syringe fit positive pressure tester, the syringe fit negative pressure tester, the pushback tester to prevent reuse, the syringe sliding performance tester, the syringe piston thrust tester, the 6% Ruhr cone joint multi-function tester, the safety syringe self-destruct tester, the safety syringe self-destruct tester, the safety syringe anti-needle force tester, etc
.

Let's first look at the experimental principle
of the syringe fit positive pressure tester.

Syringe body fit positive pressure test principle: suction water with the syringe, seal the syringe cone hole, the core rod is located in the most unfavorable direction relative to the jacket, apply a certain force to try to cause leakage
of the piston and sealing ring.

According to the test method of leakage at the piston or seal ring when the syringe is under positive pressure, there should be no liquid leakage at the piston or seal
ring.

The requirements for instruments and reagents in the test method of leakage at the piston or sealing ring when the syringe is under positive pressure are as follows: 1.
The device
that seals or plugs the syringe cone.

(Note: Can be a reference steel internal tapered joint that meets the requirements of GB/T 1962.
1 or GB/T 1962.
2.

)
2.
The device that applies lateral pressure to the syringe core rod ranges from 0.
25N to 3N
.

3.
The device that applies an axial force to the jacket and/or mandrel can generate pressures
of 200kpa and 300kpa.

4.
Test water, 18 °C ~ 28 °C, in line with the requirements
of GB/T 6682 grade three water.

Test step 1 of the leak at the piston or seal ring when the syringe is under positive pressure, pump water beyond the nominal volume of the syringe into the syringe
.

(The water here refers to the water that meets the requirements of the standard) 2, discharge open and adjust the amount of water in the syringe to the
nominal capacity.

3.
Seal the syringe cone hole
with the device.

4.
Apply a lateral force to the hand from the angle perpendicular to the mandrel, and the size of the force should conform to the provisions of
Table 1.

Position the mandrel in a position
where it bends at its maximum with the axial piston.

5.
Apply an axial force to the syringe to generate the pressure
specified in Table 1 through the relative motion of the piston and jacket.

Maintain this pressure at 30S
.

6.
Check whether the syringe has liquid leakage through the piston or sealing ring, but allow the liquid between the sealing rings to appear
.

The requirements for the test report must contain the following information: 1, the characteristics of the syringe and nominal capacity, milliliters (ml); 2.
Whether leakage through the piston or sealing ring is observed; 3.
Test date
.