Patent ID: 8591475

Claim:
A medical device for use with a fluid transfer device having a frusto-conically shaped tip comprising: a hub having an open proximal end with a frusto-conically shaped cavity therein, a distal end and a passageway therethrough, said cavity being part of said passageway; and a release element in said passageway of said hub positioned to block fluid-tight engagement of said frusto-conically shaped tip with said cavity of said hub, said release element including a distal end in said passageway including a plurality of channels for accepting liquid flow from said fluid transfer device through said passageway and a proximal end including a proximally directed axial beam, said beam having a free end adapted to contact the distal end of said frusto-conically shaped tip to block fluid-tight engagement of said tip and said hub; wherein said beam buckles upon application of a proximally directed force on said hub, to allow abrupt fluid-tight engagement of said tip and said cavity in said hub.