Advanced Silicon Modeling of Native Mitral Valve Physiology: A New Standard for Device and Procedure Testing

Area of Science:

• Biomedical Engineering
• Cardiovascular Research
• Materials Science

Background:

• Mitral valve regurgitation is a common heart disease, particularly in older adults.
• Percutaneous therapies offer an alternative for high-risk patients but require further understanding for long-term efficacy.
• Patient-specific strategies are needed to optimize percutaneous mitral valve interventions.

Purpose of the Study:

• To develop and validate a reliable in vitro model of a healthy native mitral valve.
• To establish a patient-specific approach for optimizing percutaneous mitral valve therapy.
• To assess the physiological behavior of silicone-based mitral valve models.

Main Methods:

• Fabrication of multiple mitral valve models using different silicone combinations.
• Testing of models under physiological hemodynamic conditions using a cardiac simulator.
• Analysis of hemodynamic and biomechanical properties, comparing them to literature values.

Main Results:

• Identified EcoFlex 00-50 and DragonSkin 10 as optimal silicone materials.
• Achieved physiological strain values and hemodynamic parameters in the developed models.
• Demonstrated the feasibility of reproducing healthy mitral valve behavior in vitro.

Conclusions:

• The developed in vitro model accurately replicates healthy mitral valve function.
• This patient-specific approach holds promise for optimizing percutaneous mitral valve therapy.
• The findings support the use of specific silicone combinations for future clinical applications.