Dispensing device for dispensing small quantities of fluid comprising a compressible balloon with an end-to-end capillary inserted within the walls of the balloon in such a way that the one end of the capillary communicates with the interior of the balloon and the other end of the capillary communicates...http://www.google.de/patents/US6024138?utm_source=gb-gplus-sharePatent US6024138 - Dispensing device for dispensing small quantities of fluid
