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Catheter for endoluminal bipolar electrocoagulation.

C D Becker1, M Jameson, J S Fache

  • 1Department of Radiology, University of British Columbia, Vancouver, Canada.

Radiology
|February 1, 1989
PubMed
Summary
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A novel catheter uses radio-frequency (RF) electrocoagulation to create controlled tissue lesions, enabling safe and reproducible percutaneous occlusion of the cystic duct through scar formation.

Area of Science:

  • Interventional Radiology
  • Medical Device Engineering
  • Gastroenterology

Background:

  • Endoluminal tissue ablation is crucial for various medical procedures.
  • Percutaneous interventions require precise and controllable methods for tissue modification.
  • Cystic duct occlusion is a target for managing biliary conditions.

Purpose of the Study:

  • To design and evaluate an interventional catheter for controlled endoluminal tissue lesion induction.
  • To assess the safety and reproducibility of radio-frequency (RF) electrocoagulation for cystic duct occlusion.
  • To demonstrate the feasibility of scar formation for percutaneous duct closure.

Main Methods:

  • Development of a triple-lumen, 7-F polyethylene catheter with insulated active wires.

Related Experiment Videos

  • Utilizing bipolar radio-frequency (RF) electrocoagulation for lesion creation.
  • Employing fluoroscopic guidance and a steerable guidewire for precise catheter placement.
  • Application of the technique for percutaneous occlusion of the porcine cystic duct.

    • Main Results:

    • The catheter successfully induced controlled endoluminal tissue lesions.
    • Percutaneous occlusion of the porcine cystic duct was achieved safely and reproducibly.
    • The method relied on reactive endoluminal scar formation for duct closure.
    • Catheter insertion and placement were facilitated by the integrated guidewire and fluoroscopic control.

    Conclusions:

    • A novel bipolar RF electrocoagulation catheter enables controlled endoluminal lesion formation.
    • This technique provides a safe and reproducible method for percutaneous cystic duct occlusion.
    • The developed catheter system is suitable for interventional procedures requiring precise tissue ablation and closure.