Abstract: An anti-reflux catheter includes a central support body having an inner longitudinal passage chamber; a cannula extending out of one end of the central body and connected to the inner chamber; a transverse opening which extends through the central body and communicates with the inner chamber; an outwardly extending mouthpiece of the transverse opening; a flexible sleeve longitudinally accommodated in the inner chamber at the transverse opening and having an outer surface facing such transverse opening, the mouthpiece having a pressure system associated therewith, which act upon the sleeve and is movable between an idle position or an operating pressed position, and vice versa.

Abstract: A cannula-needle with a protective member includes a needle holder that holds a needle, which is designed to be coaxially coupled with a cannula for making an injection into a blood vessel, and which has a stem having a longitudinal axis, a distal tip and a transverse engagement member in the proximity of the tip; a cannula holder, with the cannula extending from a distal end thereof, and with an inner cavity mating with the needle holder and having inner walls formed at the opposite proximal end; a protective member protecting the needle tip and movable from a disabled position to an enabled position, in which it is irreversibly placed beyond the needle tip after use of the cannula-needle, the protective member being housed between the inner walls of the inner cavity in the disabled position.

Abstract: A butterfly needle with a protective device: includes a central body having a proximal end and an opposite distal end; a pair of wings bilaterally extending from the central body; a safety device designed to be automatically actuated by traction; and a needle with a shank having an engaging element near its tip for engagement with the safety device and supported by a needle hub at an opposite proximal end, the needle being slidingly longitudinally received in the central body, which includes an inner housing chamber between the proximal end and the distal end, wherein the safety device is irreversibly slidingly housed between a rest position and an actuated position.