Patent ID: 10905467

Abstract:
A method for dissecting a submucosal layer includes: incising at a tissue portion surrounding an area including a lesion in a gastrointestinal tract; fixing a thread first end to the area including the lesion, the suture thread including a second end having a needle, and barbs arranged along a longitudinal axis between the first and second ends; piercing the needle to a tract wall that faces the area including the lesion and pulls the thread through the tract wall into the gastrointestinal tract; holding a state of lifting at least a portion of the area including the lesion by pulling the needle or the thread, lifting a tract wall at least the portion including the lesion, and engaging the barbs with the tract wall; dissecting the submucosal layer of the gastrointestinal tract in the state of lifting at least the portion of the area including the lesion.