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Related Experiment Videos

A feasibility study on a new artificial sphincter for colostomy

J B de Paula1, A Cliquet Júnior

  • 1Department of Biomedical Engineering, Faculty of Electrical Engineering, State University of Campinas, São Paulo, Brazil.

Artificial Organs
|March 1, 1995
PubMed
Summary

Researchers explored an artificial sphincter for colostomates to treat fecal incontinence. A mechanical device using a plastic band successfully restored continence in dogs without causing tissue damage.

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Area of Science:

  • Biomedical Engineering
  • Gastroenterology
  • Surgical Innovation

Background:

  • Fecal incontinence remains a significant challenge for individuals with colostomies.
  • Current management strategies for colostomy-related fecal incontinence are limited.
  • The potential of artificial sphincters utilizing electromagnetic/mechanical power has not been investigated.

Purpose of the Study:

  • To evaluate the feasibility of an artificial sphincter to restore fecal continence in colostomates.
  • To determine the necessary characteristics for components of an artificial sphincter that replaces natural muscle function.
  • To assess the efficacy and safety of a mechanical device in achieving bowel control.

Main Methods:

  • Isolated canine colon models (n=26) were used to test an artificial sphincter prototype.

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  • The device incorporated a plastic band to mechanically occlude the colon.
  • Continence was assessed based on the intraluminal gas pressure required to overcome the occlusion.

    • Main Results:

    • All canine subjects achieved fecal continence with an intraluminal gas pressure exceeding 80 mm Hg.
    • The artificial sphincter achieved a stable colonic perimeter between 3.7 and 4.7 cm.
    • No macroscopic lesions were observed on the colonic tissue beneath the plastic band.
    • Maximum band displacement was 4.2 cm with a traction force under 50 N.

    Conclusions:

    • An artificial sphincter utilizing a mechanical plastic band can effectively restore fecal continence in a canine model.
    • The developed device shows promise for managing fecal incontinence in colostomates.
    • The approach is safe, with no observed tissue damage, indicating potential for clinical translation.