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Related Experiment Videos

A design for flexible intestinal cannulas.

H L Buttle, C Clapham, J D Oldham

    Laboratory Animals
    |October 1, 1982
    PubMed
    Summary

    A novel cannula design using silicone rubber tubing and rigid flanges effectively manages gastrointestinal fistulas in cattle. This surgical device minimized tissue reactions, proving suitable for long-term use in adult lactating animals.

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    Area of Science:

    • Veterinary Surgery
    • Animal Science
    • Biomedical Engineering

    Background:

    • Fistulas in adult lactating cattle, particularly duodenal, ileal, and abomasal, pose significant clinical challenges.
    • Existing fistula management techniques may lead to complications and tissue damage.

    Purpose of the Study:

    • To describe a new cannula design for managing gastrointestinal fistulas in cattle.
    • To evaluate the efficacy and tissue compatibility of the designed cannula.

    Main Methods:

    • A cannula was fabricated by attaching silicone rubber tubing to rigid internal and external flanges.
    • The cannula was surgically applied to create simple duodenal, ileal, and abomasal fistulas in adult lactating cattle.
    • The device was used for periods up to one year.

    Main Results:

    • The described cannula design was successfully implemented for managing various gastrointestinal fistulas.
    • Minimal tissue reaction was observed at the fistula sites throughout the study period.
    • The cannulas remained functional for up to one year in the treated animals.

    Conclusions:

    • The novel silicone rubber and rigid flange cannula is an effective and well-tolerated device for long-term management of gastrointestinal fistulas in cattle.
    • This design offers a promising solution with minimal adverse tissue effects for veterinary surgical applications.

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