BigPatents India

The invention concerns a device comprising a cap (10) to be mounted on a container (2) and comprising a sleeve (18) forming an internal bore (A) and a piston (19) capable of sliding inside said bore (A), between a first released position relative to the stopper (5) and a second position, called transfer position, wherein a hollow needle (19) borne by or forming the piston passes through the stopper (5). The piston (19) and the cap (10) are formed in one single piece and connected by at least an elastic tab (26) capable of being deformed, essentially along a direction parallel to a central axis (X-X') of the bore (A) to accompany the movement of the piston between said first and second positions. Drawing Sheets. 04 Total Pages: 17 (FIG.02)