Safety and Effectiveness Evaluation of the COLO-BT as an Alternative Treatment to the Ileostomy

Last updated: June 12, 2025
Sponsor: JSR Medical Co., Ltd.
Overall Status: Active - Recruiting

Phase

N/A

Condition

Colon Cancer

Colorectal Cancer

Colon Cancer; Rectal Cancer

Treatment

Stoma Creation

COLO BT™

Clinical Study ID

NCT05826743
JSR CB
  • Ages 19-80
  • All Genders
  • Accepts Healthy Volunteers

Study Summary

The purpose of this study is to evaluate the Colorectal Balloon Tube (hereinafter referred to as COLO-BT™) device, a single use, temporary intraluminal bypass device, intended to reduce contact of fecal content with an anastomotic site, following colorectal surgery (open or laparoscopic)

Eligibility Criteria

Inclusion

Inclusion Criteria:

The patient must meet all study Inclusion Criteria as outlined below:

  • Adult males or females, 19-80 years of age, with signed informed consent

  • Subject whose anastomosis is expected to be located above 4cm from the anus,and at or below 15cm from the anus. (4cm < inclusion target ≤ 15cm from theanus). ③ Patient must meet all other inclusion criteria to be eligible. While notrequired, if one or more of the following six risk factors for postoperativeanastomotic leakage[6,7,8] is true, the patient will be considered a high-risksubject:

  • Male

  • Those with a body mass index of 30 or higher

  • Current smoker

  • Those who are on medication for diabetes

  • Those with clinical stage III or higher malignant tumors

  • Those who received chemo/radiation therapy before surgery ④ Those who are willing and able to participate in this clinical study, provideInformed Consent, and are willing to comply with the study procedures andfollow up evaluations ⑤ Those who have willingness to undertake blood transfusion if required.

Exclusion

Exclusion Criteria:

Patients meeting any of the following Exclusion Criteria will not be eligible to participate in the study:

  1. Women who are pregnant or breastfeeding

  2. Those who receive emergency surgery

  3. A person who is expected to need intensive medical care after the surgery due to aserious medical condition, with one or more of the following seven factors beingtrue:

  • Patients with abnormal bone marrow function (those with hemoglobin less than 7g/dl, leukocyte count less than 4000/mm3, or platelet count less than 100,000/mm3 even after preoperative corrections)

  • Patients with severe liver damage or cirrhosis (those whose AST/ALT levels aremore than three times the normal range or those diagnosed with cirrhosis)

  • Those with abnormal renal function (those who are on hemodialysis or who have ablood creatinine level of 2.0mg/dl or more before the surgery)

  • Those who have undergone cardiac or cerebrovascular stent procedure within thelast 6 months

  • Those who have been diagnosed with pulmonary tuberculosis within the last 6months or are undergoing drug treatment for pulmonary tuberculosis

  • Those who continuously administer steroids of 20mg/day or more within 30 daysbefore the surgery

  • Patients with ASA (American Society of Anesthesiologists) score of 3 areevaluated by the investigator who determines whether or not patients with ASAscore of 3 should be enrolled from the patient safety standpoint. Patients withASA score higher than 3 are excluded from this study.

  • Patients who are required to undergo re-intervention to treat the anastomosisfollowing intraoperative positive air leak test (However, patients whounderwent complete reconstruction of the anastomosis in the presence of apositive air test, which therefore has made their risk of leak similar to thosepatients with a negative air leak test.)

  • Patients who are immune suppressed

  • Patients with severe diverticulosis

  • Patients with other colonic wall abnormalities in the likely area of the OuterBalloon and BT BAND application who may be at increased risk for deviceperforation or migration.

  1. A person who has difficulty in mobility or is unable to communicate in general dueto a psychiatric/neurologic disorder falling under one or more of the following:
  • Those diagnosed with dementia or Alzheimer's disease.

  • Those who have been diagnosed with schizophrenia or depression or are takingdrugs due to this.

  • A person who has been diagnosed with disability due to intellectual disability.

  1. Patients with intestinal perforation, abscess in the pelvis, or severe inflammationin the pelvis.

  2. Those who have a history of undergoing major surgeries (major bowel resection/majorgastrectomy, major hepatectomy) through laparotomy and are likely to have seriousadhesions that may affect this surgery.

  3. A patient who underwent a preoperative chemotherapy, but the anastomosis is expectedto be located very close to the anus or in the anal canal, thus with a very highrisk for complications of the anastomosis, or a patient whom the bowel function isexpected to decrease significantly in the future.

  4. Patients who had pre-operative radiotherapy should be excluded.

  5. Patients with inflammatory bowel diseases such as ulcerative colitis, Crohn'sdisease, intestinal tuberculosis, or autoimmune diseases such as Bechet's disease.

  6. Those who do not consent in writing to the study.

  7. Experienced blood loss (>750 cc) within 6 weeks before randomization.

  8. Transfusion during surgery.

  9. Any new sign of ischemia within 6 weeks before randomization.

  10. Diagnosis of bowel obstruction, bowel strangulation, peritonitis, bowel perforation,intraabdominal infection, ischemic bowel all due to carcinomatosis within 6 weeksbefore randomization.

  11. Known hypersensitivity or allergy to any of the components required for theprocedure.

  12. Exclusion criteria not specified above, but the patient is determined to beunsuitable for participation in this clinical study at the judgment of theresearcher.

Study Design

Total Participants: 256
Treatment Group(s): 2
Primary Treatment: Stoma Creation
Phase:
Study Start date:
December 04, 2023
Estimated Completion Date:
March 15, 2027

Study Description

A primary diverting stoma is widely used by surgeons in order to bypass low rectal anastomosis and reduce morbidity associated with anastomotic leaks. Typically, a stoma is created for all high-risk patients which mean that many patients are exposed to potentially serious complications associated with the stoma itself without any clinical benefit.

COLO BT™ is a local, temporary bypass device that provides protection of the anastomosis and safely postpones stoma. COLO BT™ is designed to avoid stoma creation in all patients except those patients whose anastomoses have not healed after surgery, allowing the others to return to normal activity more quickly and safely.

Connect with a study center

  • Jacobs School of Medicine & Biomedical Sciences, State University of New York at Buffalo

    Buffalo, New York 14203
    United States

    Active - Recruiting

  • PennState Health - Milton S. Hershey Medical Center

    Hershey, Pennsylvania 17033
    United States

    Active - Recruiting

  • Baylor College of Medicine

    Houston, Texas 77030
    United States

    Active - Recruiting

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