overtube
Pronunciation: OH-ver-toob
A protective plastic sheath placed over an endoscope to facilitate multiple insertions and protect the esophagus during bariatric endoscopic procedures.
Full Definition
An overtube is a hollow, flexible plastic cylinder that slides over an endoscope to provide protection and facilitate repeated intubation during complex endoscopic procedures. In bariatric surgery, overtubes are commonly used during endoscopic interventions such as stent placement, foreign body removal, or therapeutic procedures requiring multiple scope passages. The device protects the esophageal and pharyngeal mucosa from trauma during repeated insertions and allows for rapid scope exchange without losing luminal access. Modern overtubes may include features such as insufflation ports, working channels, or spiral designs to minimize tissue trauma while maintaining adequate seal and stability.
Usage
Usage note: Protective device for repeated endoscopic access; reduces mucosal trauma.
In Context
- "An overtube was placed to facilitate multiple endoscope insertions during the complex stent revision procedure." — Endoscopy report