Patent ID: 8133202

Claim:
An injection needle for use in injecting a substance from a reservoir, comprising: a hub having, a distal end with a first protrusion having a skin engaging surface defined distally thereon, an axial void in said hub having a channel defined at said distal end of said hub and extending through the hub, proximally away from said skin engaging surface, a second protrusion having a distal face disposed on said hub substantially encircling said first protrusion, wherein the distal face of the protrusion is positioned co-planar or distal to the skin engaging surface, a needle cannula having a sharpened distal end and a proximal end, said needle cannula being secured in said channel with said proximal end being in fluid communication with said reservoir and said distal end of said needle cannula extending from said skin engaging surface a pre-determined distance, wherein said skin engaging surface limits penetration of said distal end of said needle cannula to a pre-determined layer of the skin of a patient, and a third protrusion having a substantially concave proximal end and from which the proximal end of the needle cannula emerges.