Khaberni - Cardiovascular diseases remain one of the leading causes of death globally. In this context, researchers at the University of Washington have developed a three-dimensional model of the heart that simulates the movement of its left side.
Researchers previously used animal tissues in such studies, which raised ethical issues, while traditional synthetic models were unable to accurately simulate the biomechanics of the heart.
The new model is made of soft materials that simulate the elasticity of real cardiac tissue, where the ventricle is connected to the mitral valve via stitches that mimic natural chordae tendineae. The results of the study were published in the journal Advanced Materials Technologies.
"McKibben" type actuators integrated into the walls of the model contract to simulate the movement of the ventricle and vibrations of the mitral valve, generating dynamic pressure on the tissues. Flexible pressure sensors record changes inside the heart, providing precise data that allows for the analysis of the effectiveness of surgical techniques.
This model was specifically designed for training on the "edge-to-edge" technique used in treating mitral valve regurgitation. It allows doctors to simulate blood flow and heart contractions while considering the individual characteristics of each patient. The use of 3D printing and soft robotics also eliminates the need for live animals, enhancing safety and improving the quality of training.
Researchers confirm that this system provides a unique tool for training surgeons and opens new avenues for studying blood flow and developing surgical tools without posing any risks to patients.
