Patent ID: 9642971
Date: 2017-05-09
CPC Classifications: A61M

Claim:
1. A safety needle assembly comprising: a hub having a proximal end and a distal end; a needle fixed to said hub, said needle having a distal end, formed for insertion into a patient, and a proximal end; a first shield having a tubular body and at least one deflectable retaining arm at least partially encircling a portion of said needle, wherein, in an initial state, said first shield extends from within said distal end of said hub; a second shield having a tubular body at least partially encircling a portion of said needle; and biasing means disposed to urge said second shield distally towards said distal end of said needle, wherein in a first state, said at least one deflectable retaining arm interferingly engages with an interior of said hub, wherein said hub deflects said at least one deflectable retaining arm inward to releasably retain and prevent distal movement of said second shield in said first state, wherein a predetermined extent of proximal movement of said first shield relative to said hub causes said at least one deflectable retaining arm to release said second shield from said first state thereby allowing said biasing means to urge said second shield to a second state, said second shield extending distally from a distal end of said first shield in covering said distal end of said needle in said second state.