Fluid dispenser with priming means

A device for dispensing a fluid, comprising:

• a bottom part comprising a bottom wall,
• a pocket having an interior volume arranged to contain the fluid,
• a pressing surface arranged to, under an exertion of pressure, reduce the interior volume of the pocket,
• a feed orifice arranged to let the fluid pass to the inside of the pocket,
• an outlet,
• a dispensing valve, which in an open state, allows a passage of the fluid from inside the pocket towards the outlet, and, in a closed state, does not allow a passage of fluid from inside the pocket towards the outlet, and
• a cap or a button, said cap or button being placed above of the bottom wall, wherein
• the cap or the button partly delimits the pocket, and comprises:
• a movable or deformable wall surrounding the pressing surface,
• a flexible edge of the movable or deformable wall, which rests on the bottom wall and has a width between a junction line and a support line, and
• a dispensing orifice passing through the bottom part and being arranged to allow fluid to escape from inside the pocket, wherein the cap or the button is arranged to rotate between an open position and a closed position of the cap or the button so as to block or permit an outlet of fluid through the dispensing orifice to the outside of the device.