Patent ID: 9572929
Date: 2017-02-21
CPC Classifications: A61B,A61M

Claim:
1. A needle assembly comprising: a housing having proximal and distal ends and a shield seat; a cannula projecting distally from the housing, the cannula having a distal tip; and a single shield having a unitary structure and defining an opening adjacent to a proximal end of the shield and an interior space adapted to receive the cannula; an engagement extending from the unitary structure of the shield, the single shield configured for transitioning between a pre-use position wherein the shield covers the distal tip of the cannula and the engagement is disengaged and circumferentially spaced from the shield seat, and a use position wherein the engagement is engaged with the shield seat and the shield is adapted to move between a non-shielded position, in which the distal tip is exposed, and a shielded position, in which the distal tip is shielded by the shield and wherein during transition from the pre-use position to the use position, the shield is moved in a direction away from the distal end of the housing to unshield the distal tip of the cannula prior to engagement of the shield engagement with the shield seat.