Patent ID: 9352084
Filing Date: 2016-05-31
CPC Classification: A61F,A61M,Y10T

Claim Text:
1. A cannula for use in the administration of a medicine to a target location, the cannula comprising: an elongated rigid steel tube having a length and a tip and including a proximal end and a distal end, the tip being disposed at the distal end, the length having a constant circular cross-section, a lumen extending between the proximal and distal ends, and an outer circumferential surface defining a circumference, and a nodule welded along the circumferential surface and spaced at a defined distance from the distal end of the tube, said nodule extending less than about the entire circumference of the tube, said nodule being adapted to permit penetration of the nodule through a first tissue and adapted and disposed to limit penetration of the distal end of the tube into a target location wherein the nodule is of a substantially hemispherical shape disposed directly along the outer circumferential surface.