Safety shield assembly

A safety shield assembly comprising

• a needle hub comprising a proximal and a distal end and a passage extending between said ends, a collar, a hook arm and at least one detent formed externally on said hub;
• a needle cannula mounted to said passage of said needle hub and having a pointed distal end projecting beyond said distal end of said hub;
• a shield comprising a proximal end, a distal end, a top wall and opposed first and second sidewalls extending from said top wall, and a hanger bar extending from said proximal end of said shield;
• said shield being hingedly mounted to said hub by an interference engagement between said hook arm and said hanger bar, for rotation from a first position where said shield is spaced from said needle cannula to a second position where said shield substantially surrounds said needle cannula,
• a resiliently deflectable cannula finger lock projecting from said first sidewall angularly toward said top wall, and
• at least one rounded ear formed on said shield for engaging said at least one detent when said shield is in said second position,
• such that when said shield is in said second position, said needle cannula is trapped below said top wall and above said cannula finger lock, said at least one rounded ear and detent providing audible and tactile indication of said shield reaching said second position.