A fluid supply device for discharging a fluid comprising: a housing； a piston pump (4)； a displacement mechanism； and an activation mechanism (6)； the housing comprising a basal end and a discharge end having an outlet (10) for discharging the fluid； the piston pump (4) comprising a cover (20) defining a pump chamber (35) for storing the fluid, a piston (21) slidingly movable with respect to the pump chamber (35), a plunger of piston (22), and a supply channel for supplying the discharged fluid from the pump chamber (35) to the outlet of the housing； the activation mechanism (6) being mobile from a cocked configuration to an activation configuration； in the cocked configuration the activation mechanism prevents the transfer of a displacement force from the displacement mechanism to the cover (20) to thereby prevent movement of the cover (20) towards the outlet (10) of the housing； In the activation configuration, the activation mechanism (6) allows the transfer force to be transferred to the cover (20) to thereby cause movement of the cover (20) towards the outlet (10) of the housing to discharge fluid from the pump chamber (35), along the supply channel and out through the housing outlet； where the displacement mechanism comprises one or more flexible fasteners (104) that in the cocked configuration are attached to the housing； and where the activation mechanism (6) comprises a mobile button (100) manually located at the base end of the housing； the button (100) comprising an obstructor that in the cocked configuration is coupled to the one or more flexible fasteners (104) to prevent decoupling of the one or more housing fastening members； and characterized in that, in the activation configuration, the one or more flexible fasteners (104) are decoupled from the housing.Un dispositivo de suministro de fluidos para descargar un fluido que comprende: una carcasa； una bomba de pistón (4)； un mecanismo de desplazamiento； y un mecanismo de activación (6)； comprendiendo l
