Needle cover

A needle protection device for protecting a needle having a first end and a second end comprising:

• a) a needle carrier for carrying said needle, said needle carrier having a first end and a second end, an outer surface and a longitudinal axis X and being translatable along said longitudinal axis X between a first, deployed position and a second, protected, position;
• b) a shuttle surrounding said needle carrier, having a first end and a second end, a longitudinal axis X, a longitudinally extending inner aperture for receiving said needle, an inner opening having a surface for receiving said needle carrier and an outer surface;
• c) a hub for receiving the needle carrier;
• d) a sleeve having a first end, a second end, and an inner surface surrounding and being rotatable around each of said needle carrier, said shuttle and said hub;
• e) a first driving mechanism comprising a spiral cam on one of said needle carrier and said shuttle and a cam follower on the other side of said needle carrier and said shuttle;
• and
• f) a second driving mechanism comprising a spiral slot on one side of said needle carrier and said sleeve and a protrusion on the other side of said needle carrier and said sleeve,
• wherein rotational displacement of the sleeve causes axial displacement of the carrier in a first direction which translates to axial displacement of said shuttle in said first direction between a first retracted position and a second deployed position,
• wherein the rotational displacement of the sleeve does not cause axial displacement of the hub relative to the sleeve, and
• wherein the pitch of the cam of the first drive mechanism is greater than the pitch of the slot of the second drive mechanism.