The needle used in IVs is called a trocar. It comes inside the cannula.
When an intravenous (IV) line is placed, a cannula is inserted into a vein. The cannula is a small, flexible tube. Inside this cannula is a sharp needle called the trocar. The trocar's purpose is to puncture the skin and the vein, creating an entry point for the cannula. Once the cannula is properly positioned in the vein, the trocar is removed, leaving the cannula in place for the administration of fluids or medications.
Key Points About the Trocar in IV Cannulas:
- Puncturing Tool: The trocar is the sharp needle that punctures the skin and vein.
- Inside the Cannula: It is located inside the cannula during insertion.
- Removed after Insertion: The trocar is removed after the cannula is correctly placed.
- Intravenous Cannulas: Intravenous cannulas are the most common type of cannulas used in hospitals.
In summary, the needle used for an IV is the trocar, which is essential for the initial insertion of the cannula into the vein.
