Pump without residual volume for the delivery of media

摘要

Pump for dispensing a fluid contained in a vial, comprising: & br / - a pump body having a front end of the side of the output of the fluid, said front end comprising an outlet orifice (11) is closed by an elastic diaphragm (24), and extending towards the rear by a conduit of pump (18) provided with an orifice (15) of the admission of fluid, & br / - a movable piston installed in the pump body, the relative displacement of the end (2) of the piston relative to the pump body between the orifice (15) of the intake and a stop position (16) located towards the outlet orifice (11), thus determining the quantity of fluid expelled during the movement, the end (2) of the piston being adjusted tightly fit to the conduit of pump (18), the inlet orifice (15) is of sufficient size to that only the quantity of fluid that is predetermined to be able to be captured in the end of the conduit of pump (18) in order to be expelled through the outlet orifice (11), the pump body and the piston is totally enveloped by the bottle, with the exception of the front end of the body of the pump.