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[Hydredynamic bench for pulsatile flows. Application to hemodynamic studies (author's transl)].

M Siouffi, J Doffin, P Issartier

    Journal De Physiologie
    |January 1, 1977
    PubMed
    Summary

    A novel hydrodynamic bench generates variable oscillatory and pulsatile flows for studying vascular stenoses. This system precisely controls flow rates, aiding in understanding blood flow patterns and velocity distributions.

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    Blood viscosity measurements in both extensional and shear flow by a falling ball viscometer.

    Biorheology. Supplement : the official journal of the International Society of Biorheology·1984

    Area of Science:

    • Fluid dynamics
    • Biomedical engineering
    • Cardiovascular research

    Context:

    • Oscillatory and pulsatile flows are crucial in cardiovascular research.
    • Existing hydrodynamic systems may lack precise control over flow characteristics.
    • Understanding flow patterns in stenotic vessels is vital for clinical applications.

    Purpose:

    • To introduce an original moto-pump group for generating controlled oscillatory and pulsatile flows.
    • To investigate the impact of vascular stenoses on flow patterns using this novel system.
    • To analyze velocity distributions in simulated stenotic conditions.

    Summary:

    • A unique moto-pump group, driven by a wave synthesizing generator and controlled by an amplifying comparator, produces variable flow rates (oscillatory, pulsatile, physiological).

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  • This hydrodynamic bench was utilized to study flow pattern modifications induced by vascular stenosis models.
  • Velocity distribution analysis was performed using a pulsed Doppler ultrasonic velocimeter.

    • Impact:

    • Provides a versatile tool for simulating physiological and pathological blood flow conditions.
    • Facilitates detailed investigation into hemodynamics of vascular diseases.
    • Enhances understanding of flow alterations in stenotic arteries, potentially informing diagnostic and therapeutic strategies.