Purpose To compare the quality of anaesthesia and complication rates between three sub-Tenon cannula of increasing length (anterior Greenbaum, mid Kumar–Dodds, and posterior Steven's sub-Tenon's ...

A cannula is a thin tube that doctors insert into a person’s body cavity, such as their nose, or into a vein. Doctors use them to drain fluid, administer medication, or provide oxygen. A person ...

Nasal Cannulas and COVID-19. Severe COVID can require intubation. During this procedure, doctors put a tube down a patient's throat, allowing a mechanical device to breathe for the patient.

Then in 2018 fellow knitter, and retired nurse, Eileen Copeland suggested making "cannula sleeves". Image source, Sharon Wallace. Image caption, The sleeves have bright colours and crocheted ...