Monitoring disposition of tethered capsule endoscope in esophagus

摘要: A scanning flexible endoscope includes a tether attached to capsule. The controls disposition of the capsule within body lumen such as esophagus. device in optically scans adjacent tissue on inside surface is moved axially through lumen. non-contact sensor responds indicia measure relative position and can be analog or digital form either magnetic, optical. wiper optionally provided remove bodily fluids from when pulled past sensor. pulse fluid delivered distal end cause distend, facilitating free movement