Needle apparatus and Injector having the same

摘要

A needle device according to the present invention comprises: a needle body to which a needle is attached; And a main body housing in which the needle body is assembled so that the needle protrudes to the outside, and the outside protruding length of the needle is adjusted while the assembly position of the needle body is changed. As described above, according to the present invention, since the assembling position of the needle body with respect to the main body housing is changed, the length of the outward projecting length of the needle is adjusted so that the needle can be inserted into each part of the skin or at an appropriate depth according to the drug, Can be effectively carried out. In the injection device according to the present invention, the automatic launch device is configured so that the launcher is automatically operated when the skin contact of the practitioner and the patient is detected. When the needle is inserted into the skin of the patient, the launch is automatically performed through the needle, As it moves and prevents it from being pushed into the skin or changing the depth of the needle, it is possible to eliminate the pain causing factor and increase the penetration effect of the drug.