Patent ID: 7115114
Filing Date: 2006-10-03
Classification: A61B,A61M,Y10S

Abstract:
1. 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; a retaining element releasably connected to said hub at a proximal end of said cavity, said element having an aperture therein and a plurality of protuberances projecting into said aperture for engaging said frusto-conically shaped tip, at least one of said protuberances being shaped to offer less resistance to hub movement in a direction of engagement than in a direction of disengagement with said tip, means for connecting said retaining element to said hub so that when said hub is in fluid-fight engagement with said tip, the force required to disengage said retaining element from said tip is greater than the force required to disengage said retaining element from said hub; and a cannula having a proximal end, a distal end a lumen therethrough, said proximal end of said cannula being joined to said distal end of said hub so that said lumen is in fluid communication with said passageway.