Drooped hook device for placing a cannula in a vein

摘要

The invention relates to placing a cannula by means of a needle and a non-piercing cage. A hook is formed on the end ( 6 a) of a holding member ( 6 ) which is pivotally mounted on a non piercing cage ( 5 ) around a transversal axis pivoting in the needle sliding direction in order to be engaged with the flange ( 12 ) of the cannula base. An opposite end ( 6 b) of said member laterally contacts the needle when said needle penetrates in the cage. The member is embodied in such a way that it is pivotable about said axis when it is not in contact with the needle in such a way the hook is raised and disengaged from the flange of the base while the opposite end of the member is lowered and interposed in front of the end of the needle puncture, thereby preventing the end of exiting from a chamber through the distal exit thereof. Said invention can be used for intravenous catheters.