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A Randomized Clinical Trial Comparing Surgisis AFP to Advancement Flap for the Repair of Anal Fistulas (Surgisis® AFP)

This study has been completed.
Cook Biotech Incorporated
Cook Ireland, Ltd.
Information provided by (Responsible Party):
Cook Identifier:
First received: October 16, 2007
Last updated: December 2, 2014
Last verified: December 2014
The purpose of this study is to determine whether the Surgisis anal fistula plug is just as effective in healing anal fistulas as compared to the advancement flap procedure.

Condition Intervention
Anal Fistula Device: Surgisis Biodesign Anal Fistula Plug (Surgisis® AFP) Device: Flap

Study Type: Interventional
Study Design: Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: Open Label
Primary Purpose: Treatment
Official Title: A Randomized Clinical Trial Comparing Surgisis AFP to Advancement Flap for the Repair of Anal Fistulas

Resource links provided by NLM:

Further study details as provided by Cook:

Primary Outcome Measures:
  • Healing Success [ Time Frame: 12 months ]
    Healing was defined as "closure of external opening with absence of abscess, drainage and pain."

Enrollment: 86
Study Start Date: June 2008
Study Completion Date: April 2013
Primary Completion Date: April 2013 (Final data collection date for primary outcome measure)
Arms Assigned Interventions
Experimental: 1
Surgisis® AFP
Device: Surgisis Biodesign Anal Fistula Plug (Surgisis® AFP)
Surgical placement of the Surgisis AFP is performed under general anesthesia.
Other Name: Surgisis Biodesign
Active Comparator: 2
Device: Flap
Advancement flap surgery is performed; no anal fistula plug is placed


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

Inclusion Criteria:

  • Over eighteen years old
  • Clinical diagnosis of primary anal fistula categorized as transsphincteric, suprasphincteric, or extrasphincteric in nature
  • Pre-placement of seton required for at least 6 weeks prior to surgical treatment
  • Willing to sign informed consent and share data with study sponsor and Surgisis AFP manufacturer

Exclusion Criteria:

  • Recurrent fistula tracts
  • J-pouch fistulas
  • Superficial fistulas
  • Fistulas with active abscess, infection, or acute inflammation
  • History of Chron's Disease
  • History of Ulcerative Colitis
  • History of HIV or other immune system disease
  • History of collagen disease
  • History of radiation to the anorectal region
  • Allergies to pig tissue or pig products
  • Religious or cultural objection to the use of pig tissue
  Contacts and Locations
Choosing to participate in a study is an important personal decision. Talk with your doctor and family members or friends about deciding to join a study. To learn more about this study, you or your doctor may contact the study research staff using the Contacts provided below. For general information, see Learn About Clinical Studies.

Please refer to this study by its identifier: NCT00545441

Krankenhaus Waldfriede
Berlin, Germany
Justus-Liebig-Universitat Giessen
Giessen, Germany, 35385
End-und Dickdarmzentrum Hannover
Hannover, Germany
Enddarmzentrum Mannheim
Mannheim, Germany
Caritas-Krankenhaus St. Joseph
Regensburg, Germany
St. Joseph Hospital
Wiesbaden, Germany
Sponsors and Collaborators
Cook Biotech Incorporated
Cook Ireland, Ltd.
Principal Investigator: Thilo Schwandner, MD Justus-Liebig-Universitat Giessen
  More Information

Responsible Party: Cook Identifier: NCT00545441     History of Changes
Other Study ID Numbers: 07-006
Study First Received: October 16, 2007
Results First Received: October 24, 2014
Last Updated: December 2, 2014

Keywords provided by Cook:
Anal fistula
fistula in ano
anorectal fistula

Additional relevant MeSH terms:
Rectal Fistula
Pathological Conditions, Anatomical
Intestinal Fistula
Digestive System Fistula
Digestive System Diseases
Intestinal Diseases
Gastrointestinal Diseases
Rectal Diseases processed this record on June 27, 2017