Novo Nordisk A/S
NEEDLE CANNULA WITH A GRINDED POINT

Abstract:

The invention relates to a needle cannula having a proximal end, a distal end and a lumen there between. The needle cannula is provided with a sharp point formed in a three-facet grinding. The first ground facet is of elliptic shape and grinded symmetrically around a central axis, and the second and third ground facet are grinded substantially symmetrically on opposite sides of the first ground facet such that the second and third ground facet converge to form the distal needle tip. The length of each of the substantially identical second and third ground facet measured along the central axis is less than half, and preferably less than one third, of the length of the first ground facet measured along the central axis.