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An Exploratory Clinical Study to Evaluate the Safety and Efficacy of Hemostasis Using an Endoscopic water Irrigation Pump for Underwater Endoscopic Submucosal Dissection in Patients with Superficial Gastric Tumors.

An Exploratory Clinical Study to Evaluate the Safety and Efficacy of Hemostasis Using an Endoscopic water Irrigation Pump for Underwater Endoscopic Submucosal Dissection in Patients with Superficial Gastric Tumors.

Status
Recruiting
Phases
Phase 2
Study type
Interventional
Source
JPRN
Registry ID
JPRN-jRCT1052250188
Enrollment
20
Registered
2026-01-19
Start date
2026-02-27
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

Superficial gastric tumor superficial gastric tumor, endoscopic submucosal dissection

Interventions

1. Flushing Group The procedure was performed according to the fol lowing seven steps: (1) Mucosal injection (2) Partial circumferential incision (3) Creation of a mucosal flap (4) Partial submucosal
endoscopic submucosal dissection

Sponsors

Yoshizaki Tetsuya
Lead Sponsor

Eligibility

Sex/Gender
All

Inclusion criteria

Inclusion criteria: 1. Subject who are 18 years of age and more 2. Subject who understand and voluntarily sign an informed consent form. 3. Subjects who have superficial gastric neoplasm meeting the absolute or expanded indication for E SD according to the following Japanese guidelines for gastric treatment (6 edition): i) clinically diagnosed intramucosal cancer (cT1a) representing well differentiated-type adenocarcin oma of any size, without ulcerative findings ii) cT1a representing well-differentiated-type aden ocarcinoma, less than 30 mm in size, with ulcerati ve findings iii) cT1a representing undifferentiated-type adeno carcinoma, less than 20 mm in size, without ulcera tive findings. 4. Subject who have computed tomography findin gs without any suspicious lesions of lymph node metastasis and distant metastasis. 5. Subject who have histological findings of group 3, 4, and 5 according to group classification of ga stric biopsy. 6. Eastern Cooperative Oncology Group (ECOG) P erformance Status: 0-2 7. Patients scheduled for ESD

Exclusion criteria

Exclusion criteria: 1.Patients receiving antithrombotic therapy 2.Patients with impaired hemostatic or coagulation function (platelet count 1.5) 3.Patients starting dialysis 4.Patients previously enrolled in this clinical study for another lesion 5.Patients with dysfunction of any vital organ meeting any of the following criteria: Liver: AST or ALT >= 3 times the upper limit of normal, or Child-Pugh class B or higher Kidney: eGFR 1.5 mg/dL Heart: NYHA class 3 or higher heart failure 6.Patients with electrolyte abnormalities meeting any of the following criteria: Serum Na 150 mEq/L Serum K 5.5 mEq/L Serum Cl 110 mEq/L 7.Pregnant women, women who may be pregnant, or breastfeeding women 8. Patients deemed unsuitable for sedation (e.g., history of allergy or hypersensitivity to benzodiazepines or dexmedetomidine; prior radiotherapy involving the cervical esophagus; or anticipated difficult airway management due to airway stenosis, anatomical abnormalities, or prior difficult intubation) 9.Any other patients judged inappropriate for this clinical study by the investigators

Design outcomes

Primary

MeasureTime frame
Hemostatic time for the initial bleeding episode

Secondary

MeasureTime frame
1. Efficacy-related outcomes (hemostatic time for all episodes of bleeding, usage rate of hemostatic f orceps, dissection time, dissection speed, en-bloc complete resection rate, endoscopic curability) 2. Safety-related outcomes (adverse events)

Contacts

Public ContactShinya Hoki

Kobe university hospital

hoki@med.kobe-u.ac.jp+81-78-382-6305

Outcome results

None listed

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