A PASSIVELY ACTIVATED NEEDLE SHIELD ASSEMBLY (30) WITH A HUB ENGAGEMENT MEMBER (42) FOR A NEEDLE DEVICE (5) IS PROVIDED. THE NEEDLE SHIELD ASSEMBLY (30) INCLUDES A NEEDLE SHIELD (102) MOVABLE BETWEEN A NON-SHIELDING POSITION AND A SHIELDING POSITION. THE NEEDLE SHIELD (102) PREVENTS EMERGENCE OF A SHARP DISTAL END (16) OF A NEEDLE THEREFROM IN THE SHIELDING POSITION. AN ENGAGEMENT MEMBER (42) IS SLIDINGLY DISPOSED RELATIVE TO THE NEEDLE SHIELD (102) FOR ENGAGING THE HUB (10) TO THE NEEDLE SHIELD (102) IN THE NON-SHIELDING POSITION. A RETAINER (32) OPERATIVELY COUPLES TO THE ENGAGEMENT MEMBER (42) AND IS POSITIONED TO PREVENT DISENGAGEMENT OF THE ENGAGEMENT MEMBER (42) FROM THE HUB (10) IN THE NON-SHIELDING POSITION, AND ENABLES REMOVAL OF THE HUB (10) FROM THE NEEDLE SHIELD (102) BY DISENGAGING THE ENGAGEMENT MEMBER (42) FROM THE HUB (10) WHEN THE NEEDLE SHIELD (102) MOVES TO THE SHIELDING POSITION.
