Which device is used to connect a syringe to a catheter?

The device used to connect a syringe to a catheter is a needle and tubing. This setup is essential for delivering medication, contrast agents, or other fluids directly into the vascular system or certain body cavities.

When a healthcare professional prepares to administer a substance through a catheter, the needle is often used to puncture the protective sheath or to draw fluid into the syringe. Tubing facilitates the flow of the substance from the syringe through the catheter, ensuring that it is delivered in a controlled manner.

Other options, such as a vacoliter, which typically refers to a vacuum collection device, and a vial and ampule, which are containers for holding medications, do not serve the purpose of connecting a syringe to a catheter for administration. They are important in different contexts (for storing or containing liquids) but do not facilitate the connection required for injecting fluids.