A sealing valve of the present invention allows a valve opening to be opened by pressing and deforming the sealing valve by means of a tip end of a male connection port, such as an orifice portion of a syringe, without making the tip end of the male connection port run through the sealing valve. A connection...http://www.google.co.uk/patents/US8025646?utm_source=gb-gplus-sharePatent US8025646 - Seal valve, connection port, mix-feed tube, connection device for liquid infusion circuit, and connection system for liquid infusion circuit that are for medical device
