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Related Experiment Videos

The "90 degrees bent" two-stage venous cannula

M Bugge1, V Lepore, A Dahlin

  • 1Department of Cardiovascular Surgery, Sahlgrenska Hospital, Gothenburg University, Sweden.

European Journal of Cardio-Thoracic Surgery : Official Journal of the European Association for Cardio-Thoracic Surgery
|January 1, 1995
PubMed
Summary

A novel 90-degree bent two-stage venous cannula improves cardiopulmonary bypass surgery by staying clear of the surgical field. This innovative design ensures consistent venous return, even when the heart is repositioned during posterior procedures.

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Area of Science:

  • Cardiovascular Surgery
  • Medical Device Design

Background:

  • Traditional straight venous cannulas can obstruct the surgical field during cardiopulmonary bypass.
  • Repositioning of the heart during posterior cardiac surgery may affect venous return with straight cannulas.

Purpose of the Study:

  • To introduce and evaluate a novel 90-degree bent two-stage venous cannula for cardiopulmonary bypass.
  • To assess the advantages of this bent cannula over conventional straight designs.

Main Methods:

  • A 90-degree bent two-stage venous cannula was designed and implemented.
  • Clinical performance and surgeon interaction were observed during cardiopulmonary bypass procedures.

Main Results:

  • The bent cannula is positioned under the right sternum, remaining out of the surgeon's way.

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  • Venous return was observed to be unaffected by heart displacement during posterior cardiac surgery.
  • No significant drawbacks were identified with the use of this cannula.

    • Conclusions:

    • The 90-degree bent two-stage venous cannula offers significant advantages in terms of surgical access and consistent venous return.
    • This device represents a potentially valuable improvement for cardiopulmonary bypass procedures.