Cannulation

On this page, we will explore the techniques and methods of peripheral and subcutaneous cannulation.

Although there are more types of cannulation, I have chosen these two as they are the easiest and most common types I've witnessed so far.

Cannulation is a broad term referring to the insertion of a tube or cannula into the body to administer medications, fluids, or to enable drainage.

Needles

There are many types of needles, so I will keep it simple and talk about the two most likely we will see in our daily life as a nurse.

Winged Steel Needle (Butterfly Needle):

This needle has flexible, wing-like plastic tabs on each side for better grip and maneuverability

Over-the-Needle Cannula:

This device features a sharp metal needle with a surrounding plastic catheter, typically made of Teflon.
The needle is used to initially puncture the vein, after which the flexible catheter is advanced into the vein for intravenous access, and the needle is then withdrawn.

One thing that I noticed during my placements is that all the Over-the-Needle Cannulas also have wing-like plastic tabs on each side for better grip.
So, I would suggest going to the medical supply room and taking a look at the needles they have, to see if you can observe the catheter around them.