Inserter needles and associated catheterization devices

摘要

A needle 10 for catheter introduction includes a tip 16 and a first inclined surface 18, a second inclined surface 20, and a third inclined surface extending proximally from the distal tip 16, respectively. and a distal end (12). The first beveled surface 18 converges with the second beveled surface 20 to form a first cutting edge 24 , and the second beveled surface 20 converges with the third beveled surface to form a second cutting edge and the third beveled surface surface converges with the first beveled surface 18 to form a third cutting edge 28 . The first cutting edge is about 120 degrees offset from the second cutting edge, the second cutting edge is about 120 degrees offset from the third cutting edge, and the third cutting edge is about 120 degrees offset from the first cutting edge.