Proud joint testing fixture

Proud joint testing fixture Proud joint testing fixture

Joint testing fixtureIn the YY 0267-2025 standard, it is used to evaluate the connection reliability and sealing performance of various types of connectors (such as Luer connectors and Luer connectors) in blood purification extracorporeal circulation blood/fluid systems, ensuring that they do not fall off or leak during clinical use and ensuring patient safety.

According to the standard requirements, the core functions and design points of this fixture are as follows:

test objectMainly targeting commonly used connection components such as Luer lock connectors and Luer connectors in extracorporeal circulation blood routes, covering key interfaces such as arterial end, venous end, and dialysate tubing.

Connection and disconnection force testing‌：

The tooling needs to be able to apply and measure jointsEnsure that the connecting force (insertion force) and disconnecting force (pulling force) are within the specified range (usually 0.1-10N), neither too tight to make operation difficult, nor too loose to pose a risk of detachment.

During testing, clinical operation speed should be simulated and inserted/The pulling speed is controlled at (90 ± 10) mm/min.

Torque and tensile testing‌：

The joint needs to withstand a certain amount of pressure when connectedTwisting torque (≥ 0.1 N · m) and axial tension (≥ 40 N), the fixture should have multi-directional loading capacity to verify its stability under complex forces.

Sealing verification‌：

Applying physiological pressure (such asUnder the condition of 300 mmHg, connect the test medium (such as physiological saline or air) through the fixture, observe whether there is leakage or bubbles, and maintain the pressure for no less than 3 minutes.

Adaptive design‌：

The tooling needs to be equipped with multiple specificationsStandard docking connectors are used to match blood circuit pipelines produced by different manufacturers, resolving the contradiction between interface universality and specificity, and supporting cross brand compatibility testing.

Environmental simulation‌：

Before testing, the sample needs to bePre treat in a water bath at (37 ± 2) ℃ for 1 hour to simulate the human body temperature environment and ensure that the material is in its actual working state.

This fixture is widely used in the production quality inspection and registration inspection of medical devices such as dialyzers and hemofilters, and is a key testing device to ensure the safe operation of extracorporeal circulation systems.