經自然腔道進行的腔內手術是治療泌尿道及胃腸道（GI）良性病灶及早期癌症的有效「無切口」治療方法。然而，目前的做法受限於使用基本手術器械，缺乏靈巧性，亦無法有效進行組織牽拉及提供三角操作。
適應症：Early Rectal Neoplasms
收案條件
納入條件
- Patients diagnosed with nonpedunculated early rectal neoplasms \>/= 2 cm in size in the rectum (\>/= 3 cm and \</= 18 cm from the anal verge) that are deemed not feasible for en bloc resection with conventional polypectomy or endoscopic mucosal resection (EMR) as judged by two experienced endoscopists
- American Society of Anesthesiologists (ASA) grading I-III
- Informed consent available
排除條件
- Presence of endoscopic signs of massive submucosal invasion (including excavated/depressed morphology, Kudo's pit pattern Type V, or Sano's capillary pattern Type IIIB)
- Evidence of deep invasion on endorectal ultrasonography
- Unfavorable histopathologic features on biopsy (mucinous cancer, poor differentiation, or gross submucosal invasion)
- Patients with other synchronous colorectal neoplasms in addition to the index neoplasm that are indicated for surgical resection
- Patients with recurrence from previous EMR or ESD
- Patients with non-correctable coagulopathy
- Patients with contraindications to general anesthesia
- Vulnerable population (e.g., mentally disabled, pregnancy.)
收案條件維持 ClinicalTrials.gov 原始英文登錄資料，實際收案資格以研究團隊的正式評估與受試者同意書為準。資料來源：ClinicalTrials.gov，每兩週自動更新，最後同步：2026年10月8日。