Pen needle hub with a patient contact surface

A medication pen, comprising:

• a pen body having a medication compartment and a distal end for receiving and coupling to a pen needle, the pen needle comprising
• a hub having base with a recess on a proximal side for receiving and coupling to the pen body, a distal surface, and opening extending between the proximal side and the distal surface;
• the distal surface having a diameter greater than about 3.0 mm and at least a portion of said distal face having a convex shape with radius of curvature of about 3 mm to 16 mm;
• and
• a cannula extending from the distal face and from the proximal side of the hub and having a beveled distal end for injection into a subject's skin, and a proximal end form positioning in the medication compartment of the pen body.

A method for reducing shallow injections obtained with a medication pen, comprising

• providing a pen body having a medication compartment and a distal end configured for receiving a pen needle, the pen needle comprising
• a hub having a base with a recess on a proximal side for receiving and coupling to the pen body, a distal surface and an opening extending between said proximal side and said distal face, said distal surface of said hub having a diameter greater than about 3.0 mm, and at least a portion of said distal surface has a convex surface with a radius of curvature of about 3.0 to about 16 mm;
• a cannula received in said opening in said hub and having a beveled distal end for injection into a subject's skin, and a proximal end for positioning in the medication compartment of the pen body;
• and
• inserting said cannula into the skin of the subject where the convex surface contacts the subject's skin to limit depressing and deforming of the skin to control the depth of penetration of the cannula.