Related Experiment Video
Updated: Jul 5, 2026
09:20
Lumped-Parameter and Finite Element Modeling of Heart Failure with Preserved Ejection Fraction
Published on: February 13, 2021
Mechanical simulator of the cardiovascular system
Romano Zannoli1, Ivan Corazza, Angelo Branzi
1Institute of Cardiology, University of Bologna, Via Massarenti, 9, 40138 Bologna, Italy.
Summary
Researchers developed a complex mechanical cardiovascular system simulator. This device, useful for teaching and research, accurately models physiological functions like the Frank-Starling mechanism.
Area of Science:
- Biomedical Engineering
- Medical Physics
- Physiology
Background:
- Developing accurate cardiovascular system simulators is crucial for understanding and teaching cardiovascular physiology.
- Previous simulators often lacked the complexity to fully replicate physiological mechanisms.
Purpose of the Study:
- To design and construct a mechanical cardiovascular simulator of increasing complexity.
- To explore and validate different engineering solutions for simulating cardiovascular components.
- To create a versatile tool for both educational and research purposes.
Main Methods:
- Simulated the ventricle using a pulsing syringe to achieve the Frank-Starling mechanism.
- Modeled coronary circulation with a nonlinear hydraulic resistance device.
- Replicated the aorta using rubber tubes of varying wall thickness.
- Adjusted arterial vascular resistance with a thin, variable-length tube.
- Simulated the venous reservoir and atrium using a variable-volume chamber and reservoir.
Main Results:
- Successfully built a functional mechanical cardiovascular simulator.
- Demonstrated the ability to replicate key cardiovascular functions and mechanisms.
- The simulator's modular design allowed for adaptability in both teaching and research applications.
Conclusions:
- The developed mechanical cardiovascular simulator effectively models complex physiological processes.
- The simulator serves as a valuable tool for medical education and cardiovascular research.
- The project highlighted the interplay between engineering design and physiological understanding.
Related Concept Videos
02:03Anatomy of the Circulatory System
The human circulatory system consists of blood, blood vessels that carry blood away from the heart, around the body, and back to the heart, and the heart itself, which acts as a central pump. The systemic circuit supplies blood to the whole body, the coronary circuit supplies blood to the heart, and the pulmonary circuit supplies blood flow between the heart and lungs.
01:22Mechanical Systems
Mechanical systems are analogous to to electrical networks where springs and masses play similar roles to inductors and capacitors, respectively. A viscous damper in mechanical systems functions similarly to a resistor in electrical networks, dissipating energy. The forces acting on a mass in such systems include an applied force in the direction of motion, counteracted by forces from the spring, a viscous damper, and the mass's acceleration. This interplay of forces is mathematically described...
01:27Anatomy of the Heart
The human heart is made up of three layers of tissue that are surrounded by the pericardium, a membrane that protects and confines the heart. The outermost layer, closest to the pericardium, is the epicardium. The pericardial cavity separates the pericardium from the epicardium. Beneath the epicardium is the myocardium, the middle layer, and the endocardium, the innermost layer. There are four chambers of the heart: the right atrium, the right ventricle, the left atrium, and the left ventricle.
01:30Equipments Used To Measure Blood Pressure
Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
01:27Assessment of the Cardiovascular System III: Palpation
Palpation involves feeling the body to evaluate texture, size, consistency, and tenderness for assessing cardiovascular health. The following steps are organized in a head-to-toe order:
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above the...
Jugular Venous Pressure (JVP) Measurement
Position the patient at a thirty- to forty-five-degree angle or in a semi-fowler's position. Look for the highest point of pulsation in the internal jugular vein and measure the vertical distance to the angle of Loius or sternal angle. A normal JVP is 3-4 cm above the...
01:16Heart Valves
The human heart is a complex organ with an intricate system of valves that regulate blood flow. There are two main types of valves: atrioventricular (AV) valves and semilunar valves.
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...
The AV valves prevent the backflow of blood from the ventricles to the atria during ventricular contraction. These valves function with the assistance of the chordae tendineae and papillary muscles. When the ventricles are relaxed, the chordae tendineae are slack, allowing blood to flow from the atria into the...