Limited depth penetration needle housing

A needle device for adjusting a penetration depth of a needle connected to an injection apparatus, comprising:

• an injection apparatus comprising a needle axially protruding from a front part thereof;
• an axially displaceable first tubular sleeve arranged around a front part of said injection apparatus, wherein said sleeve comprises a foremost part that surrounds the needle over its entire length;
• a compression spring disposed within said foremost part of said first tubular sleeve adapted to be in compressive relationship with said front part of said injection device;
• wherein said injection apparatus and said tubular sleeve are axially displaceable with respect to each other and are adapted, by said axial displacement, to expose a predetermined length of needle through said foremost part of said first tubular sleeve;
• an outer tubular sleeve releasably attached to, and stationary with respect to, the injection apparatus disposed around at least a portion of the front part of said injection apparatus;
• and
• an adjustable inner tubular stopping sleeve axially displaceable between at least two predetermined positions with respect to said front part of said injection apparatus;
• and
• a stopping surface arranged on the inside of the axially displaceable first sleeve and adapted to engage with said inner adjustable tubular stopping sleeve;
• whereby said axial displacement sets different distances between the foremost part of said stopping sleeve and said stopping surface, and thereby sets different needle length protrusions from the front of said first tubular sleeve.