Patent ID: 8109905
Filing Date: 2012-02-07
Classification: A61M

Abstract:
1. A retractable safety needle comprising: a needle hub having proximal and distal ends and a passage extending between said ends; a needle cannula having a proximal end, a distal end and a lumen extending therebetween, said needle cannula being securely mounted in said passage; a resiliently deflectable actuator arm extending from said needle hub, an actuator button being formed on said actuator arm; a barrel having a proximal end, a distal end and a passage extending between said ends, said needle hub being disposed in said passage of said barrel such that said needle hub, said needle cannula and said actuator arm are movable relative to said barrel from a distal position where said needle cannula projects distally beyond said barrel and a proximal position wherein said distal end of said needle cannula is disposed in said barrel, said barrel having an actuating opening extending therethrough, said actuator button engaging portions of said barrel adjacent said actuating opening when said needle hub is in said distal position, said actuator button being resiliently deflectable out of engagement with said actuating opening; a spring having a proximal and a distal end disposed in said barrel for propelling said needle hub to said proximal position when said actuator button is deflected out of said actuating opening; at least one flange extending from said barrel to limit proximal movement of said needle hub; at least one flange extending from said needle hub that limits proximal movement of said needle hub and contacts said proximal end of said spring; a first axially extending channel located within said passage of said barrel, said channel adapted for engaging said hub and limiting the movement of said hub to axial movement; and at least one resiliently deflectable locking finger extending from said barrel.