Patent ID: 7810678

Claim:
A device for dispensing at least one fluid, associable to containment means suitable for containing said at least one fluid, wherein said device comprises: pumping means in fluid connection with said containment means, said pumping means being suitable for sucking said fluid from said containment means and for ejecting said fluid from said device, wherein said pumping means comprise at least one elastic deformable membrane having a membrane axis and defining a pumping chamber, said pumping chamber being suitable for passing from a maximum volume in a non-deformed configuration of the membrane to a reduced volume in a deformed configuration of said membrane; actuating means, suitable for being handled by an operator for deforming said membrane and dispensing said fluid; wherein said membrane comprises an active portion designed to be influenced by said actuating means; wherein the active portion of the membrane comprises a wavy annular wall which develops circumferentially about said axis for producing a desired stiffness or pliability of said membrane, wherein the annular wall exhibits a succession of concave and convex portions relative to the membrane axis; and wherein said membrane comprises a dome portion which closes said membrane at the top.