Feasibility of Endoscopic Submucosal Dissection Using a Novel Anchor Ring-Shaped Thread Counter-Traction Method

A Prospective Study to Evaluate the Applicability of Endoscopic Submucosal Dissection Assisted by a Novel Anchor Ring-Shaped Thread Counter-Traction Method - Anchor Ring-Shaped Thread Counter-Traction ESD Study

Status

Recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000059777

Enrollment

Registered

2025-11-15

Start date

2025-11-15

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

Early malignant tumors of the upper gastrointestinal tract (esophagus, stomach, and duodenum)

Interventions

Endoscopic Submucosal Dissection assisted by a novel anchor ring-shaped thread counter-traction method. The procedure involves placing an anchoring ring-thread clip on the proximal side of the lesion,

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: 1. Patients with early malignant tumors of the upper gastrointestinal tract (esophagus, stomach, or duodenum) scheduled to undergo Endoscopic Submucosal Dissection in which the novel anchor ring-shaped thread counter-traction method will be applied. 2. Patients who provide written informed consent. 3. No restrictions on age or sex.

Exclusion criteria

Exclusion criteria: 1. Patients deemed to be at high risk for endoscopic treatment (Endoscopic Submucosal Dissection) due to poor general condition or other clinical factors. 2. Patients who do not provide informed consent for participation in this study.

Design outcomes

Primary

Measure	Time frame
Total procedure time (in minutes) from the start of mucosal incision to completion of lesion resection during Endoscopic Submucosal Dissection assisted by the novel anchor ring-shaped thread counter-traction method.	—

Secondary

Measure	Time frame
1. R0 resection rate:The proportion of lesions in which the pathological evaluation confirms tumor-free horizontal and vertical margins. 2. Incidence of intraoperative adverse events:Complications occurring during Endoscopic Submucosal Dissection, including perforation and bleeding. 3. Incidence of postoperative adverse events:Adverse events occurring after the procedure, such as delayed bleeding, fever, or abdominal pain. 4. Association between lesion characteristics and procedure time:The relationship between lesion size or location and the procedure time influenced by the traction method.	—

Measure

Time frame

1. R0 resection rate:The proportion of lesions in which the pathological evaluation confirms tumor-free horizontal and vertical margins. 2. Incidence of intraoperative adverse events:Complications occurring during Endoscopic Submucosal Dissection, including perforation and bleeding. 3. Incidence of postoperative adverse events:Adverse events occurring after the procedure, such as delayed bleeding, fever, or abdominal pain. 4. Association between lesion characteristics and procedure time:The relationship between lesion size or location and the procedure time influenced by the traction method.

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Countries

Japan

Contacts

Public ContactKazuki Niida

Ehime University Graduate School of Medicine Department of Advanced and Innovative Endoscopy

3naika@m.ehime-u.ac.jp0899605308

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026