The Critical Role and Design Evolution of Intravenous Cannulas in Modern Patient Care: Exploring Material Science Innovations, Insertion Techniques, and Best Practices for Reducing Phlebitis and Infection Risk
A cannula is a flexible tube inserted into the body, typically for delivering medication or fluids, or for removing fluids, and is one of the most fundamental medical devices used globally for intravenous access. Modern designs focus heavily on improving patient comfort, minimizing pain during insertion, and employing materials that reduce friction against the vessel wall to lower the incidence of mechanical phlebitis.
Significant advancements in cannula technology include the integration of safety mechanisms like passive needle retraction to prevent accidental needlestick injuries for healthcare workers. Furthermore, specialized materials with anti-thrombogenic properties are continually being developed to extend dwell time and decrease the risk of catheter-related bloodstream infections (CRBSIs), a major quality metric.