The word cannula comes from the Latin language and means “little reed.” It can sometimes be spelled canula, so if you see this do not get confused and the plural is cannulae. The device looks like a tube, and is used to by inserting it into the body to remove fluids from the body.
A cannula can add twice as much length to an introducer, this helps the Trocar needle and extends it so it can reach the targeted vein. The process of getting a cannula out of the body permanently is termed decannulation. A doctor is the one that will perform this or dictate that it be done, this will happen when the patient no longer needs help breathing.
There are different types and sizes of cannulae, the size of the cannula will depend on the type of device the doctor is using. Most of the time when a cannula is used for medical purposes, it will be attached to a Trocar needle, this lets the doctor puncture the skin and get the device to the proper location easily. There are eleven different types of cannulae and these come in different sizes. The most common types of cannula include: Lancet Point, Pencil Point, Razor Edge, Probe Point, Consistent Wall, Trocar, Bias Grind, Deflected Point, Vet Point, Bullet Point, and Welded Ball End.
There are a lot of different types of cannulae available but when it comes to hospital settings the most common cannula is an intravenous. This type of cannula is used mainly by cardiac surgeons when they need to create a cardiopulmonary bypass. A nasal cannula is used to run the tubing below the nose to help the patient get oxygen. Another common type of cannula is a venous cannula, they are used to give fluids and medicines and are commonly used when drawing blood. An arterial cannula is used when a patient is in critical condition, this will help monitor blood pressure and will also let the doctors draw blood whenever they need.
Although there are a lot of benefits with cannulae, there can also be some complications and risks associated with them. The risks that can arise are typically placed in four different categories. The most common category is hematoma but others are embolism, phlebitis, and infiltration.
As mentioned before, a cannula can vary in sizes and it is based on the type and what it will be used for. When used in medical settings a cannula has be proven to have great benefits. Although they are mostly associated with medicine they can also be used outside the medical field. This includes being used for bio research, chemistry, general aviation, among others.