A<unk>  is a medical device used to provide nutrition to people who cannot obtain nutrition by mouth, are unable to swallow safely, or need nutritional supplementation. The state of being fed by a<unk>  is called gavage, enteral<unk>  or tube<unk> . Placement may be temporary for the treatment of acute conditions or lifelong in the case of chronic disabilities. A variety of<unk> s are used in medical practice. They are usually made of polyurethane or silicone. The diameter of a<unk>  is measured in French units (each French unit equals ⅓ mm). They are classified by the site of insertion and intended use.
Feeding tube
Replogle tube
Laryngeal tube
Enterostomal therapist
Ostomy system
Tracheal tube
Digestive system surgery
Sengstaken–Blakemore tube