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Related Experiment Videos

Jet-directed catheter for interventional radiology.

J W Boretos, J V Sullivan, P E Fitze

    Annals of Biomedical Engineering
    |January 1, 1986
    PubMed
    Summary
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    A novel dual-lumen catheter uses retrojet fluid thrusts for precise navigation in acute vessel branches. This technology enhances tumor drug delivery and enables treatment of previously inaccessible arteriovenous malformations.

    Area of Science:

    • Biomedical Engineering
    • Interventional Radiology
    • Vascular Surgery

    Background:

    • Navigating tortuous vascular anatomy remains a challenge in interventional procedures.
    • Current catheter technologies can struggle with selective access to small or complex vessel branches.
    • Inefficient drug distribution via arterial infusion can limit therapeutic efficacy for tumors.

    Purpose of the Study:

    • To introduce a novel dual-lumen catheter designed for enhanced navigation in acute vessel branches.
    • To evaluate the catheter's ability to selectively access and treat lesions in challenging vascular anatomies.
    • To assess the potential of the catheter system for improved targeted drug delivery in tumor treatment.

    Main Methods:

    • Development of a dual-lumen catheter with integrated retrojet fluid thrusts from distal sidewall cowlings.

    Related Experiment Videos

  • Utilization of conventional radiopaque liquids for system propulsion and fluoroscopic guidance.
  • In vitro testing in simulated vascular networks to assess navigation capabilities through various turns and branches.
  • In vivo studies to validate performance and explore therapeutic applications like embolization and targeted drug infusion.

    • Main Results:

    • The catheter successfully traversed straight vessels and navigated sharp lateral turns with short radii.
    • Demonstrated ability to enter progressively smaller vascular branches.
    • Verified capabilities in vivo, suggesting potential for treating tumors and arteriovenous malformations in inaccessible regions.
    • Turbulent jet action significantly enhanced mixing for improved drug distribution, overcoming the streaming phenomenon.

    Conclusions:

    • The novel dual-lumen catheter offers advanced navigation capabilities in complex vascular anatomies.
    • The retrojet fluid thrust system shows promise for selective embolization and targeted arterial infusion of therapeutics.
    • This technology has the potential to improve treatment outcomes for tumors and arteriovenous malformations by enhancing drug delivery efficiency.