Cannulas are tubes that can be inserted through the nose or mouth to facilitate the entry of fluid or medication. These cannulas are usually made from plastic, metal, silicone rubber, glass, or epoxy. The insertion of a cannula into the nose or mouth requires surgical skill and proper lubrication before its inserted.

Cannula comes from a Latin word that means ‘tube,’ and the term includes any tube-like instrument used to insert fluids into or remove them from the body. A cannula is typically used to insert liquid into the body and take it out in medical practice.

The types of cannula and uses may vary according to the various healthcare settings, including hospital and emergency medicine and clinical research. Cannulas are made from multiple materials that vary based on the intended use and the manufacturer.

Types of cannula include:

  • An Oral (mouth) cannula

is used during dental procedures to provide oxygen to patients who need it while undergoing treatments.

  • Nasal Cannula –

Used during an intubation process to protect a patient’s airway.

  • Endotracheal Cannula –

Put into the trachea (windpipe) to administer oxygen during an emergency or surgery.

  • Laryngeal Cannula –

Used when a life-threatening condition inside the head and mouth, such as drowning or suffocation.

What are the various uses of cannula?

The cannula is a tube made of plastic or metal, or other material inserted to deliver fluids and medication into the body. Cannulae are available in various sizes depending on the person’s purpose and age. The most common types of cannulae are intravenous cannulae, Hickman cannulae, peripheral cannulae, nasociliary cannulae, U-tubes, and central lines.

The cannula is a device that is mainly used for medical purposes like insertion into veins and arteries. These are most commonly used in hospitals as it helps doctors insert tubes for the administration of fluids like plasma or drugs into patients’ veins.

While primarily known as breathing tubes, Cannulas are used in various medical applications. They are also helpful in providing a port for feeding patients or providing medication via an end-tidal oxygen monitor.

The following are the various uses of cannula:

  • Breathing tube:

The cannula is inserted into the trachea to help keep airways open and deliver oxygen. It is most often used for patients who need ventilator support with mechanical ventilation or whose airway has collapsed.

  • Gastric tube:

A gastric tube may be inserted through the nose into the stomach to drain off swallowed fluids; you may also place it into the abdomen at a ruptured abdominal wall or esophageal perforation.

Lastly, there are Nasogastric tubes. They are commonly used in neonatal and pediatric surgeries. They provide a way for the surgeon to clear the child’s nasal passages of secretions and blood. The shorter, soft cannula is typically inserted into a channel at the back of the throat that leads down to the stomach, while longer cannulae can be inserted through either nostril or in front of both ears. So, make sure to understand stem cells thoroughly.