Chiba needles with Chiba cannula tip. Equipped with a Luer Lock hub and spindle inside. The centimeter cannula has a sliding stopper for determining the insertion depth, as well as markers for the detection of Eco ultrasound. The cannula is cleaned with ultrasound and perfectly smudged electrowinning. The needles are easily connectable to 3-way valves or other devices with Luer. The spindle has a grinding slice of salami.