Verres needles allow safe crossing of  human body parietal walls, reducing the risk of damaging the underlying bowels. In fact, in the internal free space between the walls and the bowels, a security protection spring snaps obturating the cutting edge.
This needle is used for percutaneous drainage in paracentesis and thoracentesis interventions.
The three kinds of tips can meet any requirements coming from the physician  These are the following:
-AVA Open tip with a lateral window on the mandrel and a hole in the cannula
-AVB Closed tip with 2 lateral holes.
-AVC Closed tip with 3 lateral windows.
The more holes, the more drainage power.
This needle can also be used for insufflations of CO during laparoscopy surgery. Iin that case, the AVC version is preferred. For major safety, for this specific application, we produces the version with 30° sharpening (AVCQ). In this way the tip is more resistant and less traumatic with the intent of reducing the small share of risk related to its use.