Medical needle device

A medical needle device comprising:

• a hub having an injection needle and a tube respectively fixed at a top end and a rear end thereof;
• a cylindrical sheath which is fit on the hub, having a pair of wings mounted on both right and left side surfaces thereof, and supporting the hub in an interior side thereof;
• and a protector fit on the sheath, where said sheath together with the hub is slidable back and forth from a puncturing position where the injection needle is protruded to a storing position where the injection needle is stored, wherein:
• said protector comprises:
• a circular front part which said injection needle goes through;
• a half-split rear part of which lower part is cut out for fitting said tube therein;
• and two connecting parts which connect both right and left side surfaces of said front part and both right and left side surfaces of said rear part, where said pair of wings on said sheath protrude from lower parts of said connecting parts for enabling slid of said sheath;
• said protector is made of harder material than said sheath;
• and
• two protrusions formed both on right and left side surfaces of an outer peripheral surface of said sheath and anchoring holes formed on the front side and the rear side of the two connecting parts of said protector, which fit with said protrusions form a position controlling mechanism for positioning and fixing said sheath relative to said protector on said puncturing position and said storing position;
• and said two connecting parts have guide ditches formed between said anchoring holes on the front side and the rear side thereof for guiding said protrusions back and forth at a time of said slide.