The goal of this prospective study at Baylor St. Luke's Medical Center is to investigate the the efficacy and safety of using the novel TTS helix tack suture device as a dynamic traction device during colon and gastric endoscopic submucosal dissection (ESD). The investigators of this study hypothesize that a dynamic traction during ESD can be less traumatic than with other traction devices.
The patient is ≥ 18 years old.
Patients can provide informed consent.
The patient is < 18 years old.
The patient refuses and/or is unable to provide consent.
The patient is a pregnant woman.
Lesions with morphology: pedunculated type (Paris Ip, Ips).