Ruhr is a man named Hermann w ü lfing luer- A complete luer joint consists of a male luer Lok connection fitting and a female luer Lok fitting.

The invention of Dr. Hermann w ü lfing luer laid the foundation for the basic structure of the Ruhr connector. After continuous improvement, the Ruhr connector used now adopts a unified standard. Through the Ruhr connector, the syringe, catheter and tee can be correctly and stably connected together, and the connection of various pipelines becomes more convenient.

Tee joint with standard Ruhr connector is widely used in clinic because of its convenience. This kind of tee with ruhr joint has some details to pay attention to in use

The precharge volume of tee is generally in the range of 0.2ml ~ 0.4ml, and the superposition of TEE may affect the drug delivery kinetics;

The difference between the inner diameter of tee and infusion pipeline may lead to the decrease of liquid flow rate;

Although the use of TEE can expand the number of types of infusion, the risk of drug interaction also increases.

Therefore, if necessary, we should increase the number of catheter lumen instead of increasing the number of tee.

The contamination of Ruhr connector is also a problem of great concern in clinic. Here are a few small details that can help us prevent contamination of the ruhr joint:

Before and after disconnecting the Ruhr connector, wash hands carefully, including cleaning hands or cleaning with alcohol containing gel / foam.

The results showed that 67% of the germs could still spread after only 5 seconds;

The cotton swab can only disinfect the outer edge of the Ruhr connector, but cannot disinfect the inner part of the Ruhr connector. Once the inner part of the Ruhr connector is contaminated, the tee / catheter should be replaced immediately;

Check that the heparin cap and plug are tight. Some plugs (especially the plugs of some pressure transducers) are hollow. Once they are connected to the pipeline, they should be replaced immediately. As shown in the figure below, No. 4 and No. 7 plugs are hollow.