Breaking strength of hypodermic needles according to DIN EN ISO 9626
Universal testing machine inspekt duo 10 kN
Hypodermic needles are essential components of medical syringes and are used in a wide range of applications. Depending on the area of application, their properties vary from flexible syringes to rigid needles. The continuous further development of these needles plays a particularly important role in modern medical technology in order to ensure the gentlest possible treatment for patients.
However, as the needles become finer, the demands on their mechanical stability also increase. It is therefore essential that the breaking and bending strength is maintained despite increasingly delicate designs. To ensure this, standardized test procedures are carried out in accordance with DIN EN ISO 9626.
Requirements according to DIN EN ISO 9626
DIN EN ISO 9626 specifies the test criteria for rigid stainless steel cannula tubes used in the manufacture of medical devices. Hypodermic needles differ in terms of:
- Length,
- inner and outer diameter,
- grinding and beveling of the tip.
The mechanical stability of hypodermic needles is tested using standardized test methods:
- Breaking strength test using a 2-point bending device,
- Stiffness test with a 3-point bending device, whereby the bending distance is selected according to the needle fineness.
Test system and test setup
The inspekt duo 10kN universal testing machine is specially designed for determining the breaking and bending strength of hypodermic needles. It offers precise test results under standard-compliant conditions.
Components of the testing system:
- Clamping technology: a vice grip and pyramid jaws are used to clamp the needles to ensure secure fixation.
- Test fixtures: Depending on the type of test, a 2-point bending test for breaking strength or a 3-point bending device for stiffness measurement are used.
- Test software: The tests are carried out and evaluated using the LabMaster test software, which enables standard-compliant, automated and detailed analysis.
Conclusion
Testing the breaking strength of hypodermic needles is crucial to ensure the safety and reliability of medical products. With the inspekt duo 10 kN universal testing machine and the standardized test methods according to DIN EN ISO 9626, manufacturers can ensure that their products meet the high mechanical requirements in medical technology.