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Related Experiment Videos

Experimental evaluation of complete electrically powered ventricular assist system.

J Moise, K Butler, J Payne

    Transactions - American Society for Artificial Internal Organs
    |January 1, 1985
    PubMed
    Summary

    This study presents a reliable left ventricular assist system (LVAS) with an intrathoracic blood pump and electrohydraulic energy converter. Key innovations include transcutaneous energy transmission and a "biolized" surface for long-term use without anticoagulants.

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    Area of Science:

    • Biomedical Engineering
    • Cardiovascular Devices
    • Implantable Medical Devices

    Background:

    • Traditional left ventricular assist systems (LVAS) often require percutaneous access, increasing infection risk.
    • Existing LVAS designs may necessitate long-term anticoagulation, posing bleeding risks.
    • The need for robust, long-term mechanical circulatory support solutions remains critical.

    Purpose of the Study:

    • To evaluate a novel left ventricular assist system (LVAS) incorporating an intrathoracic blood pump and an electrohydraulic energy converter.
    • To assess the feasibility and reliability of transcutaneous energy transmission and a "biolized" blood-contacting surface.
    • To demonstrate the potential for long-term LVAS function without percutaneous access or chronic anticoagulation.

    Main Methods:

    Related Experiment Videos

    • Development and testing of an LVAS featuring an intrathoracic blood pump and a parathoracic electrohydraulic energy converter.
    • Utilized transcutaneous energy transmission, eliminating the need for percutaneous connections.
    • Employed a "biolized" continuous blood-contacting surface and conducted in vivo experiments up to 7 months.

    Main Results:

    • The LVAS demonstrated promising features including transcutaneous energy transmission and a "biolized" surface.
    • In vivo tests confirmed the soundness of basic concepts and allowed for system refinements.
    • Component tests showed blood compatibility of the "biolized" surface without long-term anticoagulation during 7-month experiments.

    Conclusions:

    • The developed LVAS, with its intrathoracic pump and electrohydraulic converter, offers a reliable alternative to existing systems.
    • Key innovations like transcutaneous energy transmission and the "biolized" surface address critical limitations of current LVAS.
    • The system shows potential for long-term implantation without percutaneous access or chronic anticoagulation, improving patient safety and device longevity.