Suitable for anaesthesia-single analgesia within he sub-arachnoid space and in particular in the lumbar region. All needles have a mandrin assuring a perfect needle lumen closure. The smallest needles, may be supplied with mounted introducer compensating the needle fexibility and consequentely favouring its introduction and positioning. Pencil point-whitacre special conical tip ensures an higher penetrability and the position of lateral lumen allows the ligaments, nerves, vessels crossing in absolute safety and also minimizing the incidence of post dural puncture headaches.