A cannula, specifically an IV cannula, typically has four main parts:
Key Components of an IV Cannula
- Metallic Stylet: This is a rigid, needle-like component inserted into the cannula to facilitate insertion into the vein. It is removed once the cannula is properly positioned.
- Polyvinyl Chloride (PVC) Cannula: This is the flexible tube itself, made of PVC, which remains in the vein after the stylet is removed. This is the part that delivers fluids.
- Flashback Chamber: This transparent chamber allows the user to visually confirm successful vein entry by observing blood flow.
- Luer Lock Cap: This cap seals the end of the cannula, providing a secure connection for attaching syringes, IV tubing, or other medical devices. It uses a luer lock mechanism for a secure and leak-proof connection.
The reference material also mentions a luer chamber, which is likely integrated with the metallic stylet and/or the luer lock cap. It is the point where the connection to syringes or IV tubing is made via the luer lock cap.
