“…Wolfenson et al case report describes the cause for breakage is use of larger diameter cannulas more than 4 mm, which probably had defects, as narrow openings in the form of "slots," in the region of the lumen that, because they were in the interior of the cannula, were not detected by either the manufacturer's quality control evaluation or the medical team. 3 Herbst and Saltvig case report describes the causes for breakage to be as follows: cannulas used for infiltration are long, with thin walls and have several holes. These three elements make the cannula potentially at risk of damage or breakage.…”