Needle assembly
AssigneeBecton, Dickinson and Company
InventorsJamieson William Maclean Crawford, Stefanie Livanos
Life of this patent
Estimating the term…
Abstract
An automatically shieldable blood collection set is provided. The blood collection set includes a needle assembly having a hub to which a needle cannula is fixedly attached. The needle hub includes a fin formed with a latch. A safety shield is telescoped relative to the hub and the needle cannula and can be moved from a proximal position where the needle cannula is exposed to a distal position where the needle cannula is safely shielded. The latch on the fin releasably engages the shield when the shield is in the proximal position. A spring is provided between the shield and the hub to propel the shield distally relative to the hub and into surrounding relationship with the needle cannula in response to movement of the latch.
Claims7
A needle assembly for a blood collection set comprising:
- a hub having opposed proximal and distal ends and a passage extending therebetween, said outer tube of said hub comprising at least one fin projecting outwardly on the hub for gripping said needle assembly;
- a needle cannula having a proximal end rigidly connected to said distal end of said hub, said needle cannula further having a distal end and a lumen extending between said ends, said lumen being in fluid communication with said passage through said hub;
- a shield telescoped over at least a portion of said needle cannula, said shield being movable from a proximal position where said distal end of said needle cannula is exposed to a distal position where said distal end of said needle cannula is shielded;
- a spring captured between portions of said hub and said shield and being operative for propelling said shield into said distal position relative to said hub and said needle cannula;
- and
- a resiliently deflectable latch formed on said fin of said hub, said latch having a locking projection releasably engaging a portion of said shield, an actuator being formed on said latch at a location spaced from the locking projection, said actuator being configured and disposed for deflecting said locking projection for selectively releasing said retainer from said shield and enabling said spring to propel said shield to said distal position.
Dependencies are inferred from the claim text.