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Trial on Use of Coloshield in Transanal and Anal Surgery

The safety and scientific validity of this study is the responsibility of the study sponsor and investigators. Listing a study does not mean it has been evaluated by the U.S. Federal Government. Read our disclaimer for details. Identifier: NCT02579330
Recruitment Status : Unknown
Verified October 2015 by Daniel Steinemann, MD, Cantonal Hosptal, Baselland.
Recruitment status was:  Not yet recruiting
First Posted : October 19, 2015
Last Update Posted : October 19, 2015
Information provided by (Responsible Party):
Daniel Steinemann, MD, Cantonal Hosptal, Baselland

Brief Summary:
In various transanal and anal procedures it is desirable to clean the operating field from stool contamination. Thus mechanical bowel preparation is not well tolerated by patients. Enema does not provide sufficient effect. By the use of Coloshield a rectal washout might be performed and enable a clean operating field. In this randomized controlled trial the macroscopic contamination of the rectum with and without Coloshield is compared using the Boston Bowel Preparation Score (0-3).

Condition or disease Intervention/treatment Phase
Fistula-in-ano Rectal Polyp Rectal Adenoma Hemorrhoids Anal Fissure Device: Coloshield Other: Control Not Applicable

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Study Type : Interventional  (Clinical Trial)
Estimated Enrollment : 22 participants
Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Single (Outcomes Assessor)
Primary Purpose: Treatment
Official Title: Randomized Controlled Trial on Practicability of Coloshield in Transanal and Anal Surgery
Study Start Date : December 2015
Estimated Primary Completion Date : May 2016
Estimated Study Completion Date : June 2016

Arm Intervention/treatment
Experimental: Coloshield Group
In the Intervention group the Coloshield Device (double balloon system) will be introduced at the beginning of surgery followed by a washout of the rectum with 500ml of saline solution. The grade of macroscopic contamination will be assessed.
Device: Coloshield
Coloshield is designed to occlude the rectum during surgery thus enabling the possibility for rectal washout and maintaining a clear operating field. The rod-shaped Instrument contains two silicon balloons which are inflated by means of a catheter. Several holes at the section in between the two balloons are connected to another catheter, which enable negative pressure to be established. By insufflation of the two balloons and establishment of a negative pressure between the balloons by means of connection to a closed drainage bottle the colon is occluded for the duration of surgery.

Other: Control
In the control group no device is introduced but a rectal washout with 500ml of Saline solution in performed.

Sham Comparator: Control Group
In the control Group the grade of macroscopic contamination will be assessed after rectal washout with 500ml of saline solution.
Other: Control
In the control group no device is introduced but a rectal washout with 500ml of Saline solution in performed.

Primary Outcome Measures :
  1. Grade of macroscopic contamination according to adjusted Boston Bowel Preparation Score (0-3). [ Time Frame: during initial surgery ]

Secondary Outcome Measures :
  1. Stable position of Coloshield [ Time Frame: during initial surgery ]
    The position of the deployed Coloshield at beginning of surgery and after 30 minutes is measured by rigid rectoscopy in cm from anal verge. Any slippage of the device during surgery is documented.

  2. Injuries of the rectal mucosa [ Time Frame: during initial surgery ]
    After removal of Coloshield by rigid rectoscopy any bleedings or tear injuries in the rectal mucosa (caused by Coloshield) are noted. It will be documented if there are bleedings or tear injuries or not, and if the exact number of bleedings and tear injuries.

  3. Postoperative pain (VAS-score) [ Time Frame: during hospitalisation (48h) ]
    The pain level on a VAS score from 0 (no pain) to 10 (strongest) 6 hours, 24 hours and 48 hours after surgery are documented.

Information from the National Library of Medicine

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Ages Eligible for Study:   18 Years and older   (Adult, Older Adult)
Sexes Eligible for Study:   All
Accepts Healthy Volunteers:   No

Inclusion Criteria:

  • Patients undergoing surgery for Fistula-in-ano, transanal resection of rectal Polyp or Adenoma, haemorrhoids or anal fissure.

Exclusion Criteria:

  • Age <18 years
  • inability to give informed consent
  • pregnancy
  • missing informed consent
  • emergency Operation (<24hours of diagnosis and admission at emergency room)
  • rectal strictures or Stenosis
  • status post rectal resection or pelvic Radiation therapy
  • inflammatory bowel disease with inclusion of the rectum
  • need for mechanical bowel preparation

Information from the National Library of Medicine

To learn more about this study, you or your doctor may contact the study research staff using the contact information provided by the sponsor.

Please refer to this study by its identifier (NCT number): NCT02579330

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Contact: Daniel C Steinemann, MD 0041 61 436 27 04

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Kantonsspital Baselland, Department of Surgery, Bruderholz
Bruderholz, Switzerland, 4101
Sponsors and Collaborators
Daniel Steinemann, MD
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Principal Investigator: Daniel C Steinemann, MD Cantonal Hospital Baselland, Switzerland
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Responsible Party: Daniel Steinemann, MD, Sponsor-Investigator, Cantonal Hosptal, Baselland Identifier: NCT02579330    
Other Study ID Numbers: 2015-341
First Posted: October 19, 2015    Key Record Dates
Last Update Posted: October 19, 2015
Last Verified: October 2015
Additional relevant MeSH terms:
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Fissure in Ano
Pathological Conditions, Anatomical
Neoplasms, Glandular and Epithelial
Neoplasms by Histologic Type
Rectal Diseases
Intestinal Diseases
Gastrointestinal Diseases
Digestive System Diseases
Vascular Diseases
Cardiovascular Diseases
Anus Diseases