A safety IV cannula is peripheral venous access equipment designed with a self-activating needle-shield mechanism. It automatically encloses the steel needle tip within a locked protective chamber as soon as the clinician removes it after successful venipuncture. This single-action safety feature requires no manual activation—eliminating the risk of needle stick injuries during the highest-risk phase of IV cannula use in hospital wards, ICUs, and emergency care settings. Available in ISO 6009 internationally standardized color-coded sizes from 14G to 26G, it features a luer lock connection that creates a secure, leak-free seal between the cannula hub and IV infusion line during active therapy.