Adaptation of cardiovascular system stent implants

Area of Science:

• Biomedical Engineering
• Medical Imaging
• Computational Fluid Dynamics

Background:

• Current cardiovascular implant adaptation is hindered by lengthy design and manufacturing.
• Delays in implant preparation can negatively impact surgical outcomes.
• Ideal implants require specific mechanical and hemocompatible properties.

Purpose of the Study:

• To propose and validate a sequence for geometrical adaptation of cardiovascular implants.
• To reduce the preparation time for patient-specific implants.
• To ensure non-turbulent blood flow through adapted implant designs.

Main Methods:

• Utilizing patient-specific abdominal aortic aneurysm (AAA) imaging (CT scans) to create mathematical models.
• Employing COMSOL Multiphysics software for implant geometry modeling and flow simulations.
• Integrating patient survey data for initial flow simulation parameters.
• Experimental validation of the mathematical model against physical prototypes.

Main Results:

• Demonstrated a method for creating patient-specific cardiovascular implant models from medical imaging.
• Identified implant shapes that ensure non-turbulent blood flow.
• Established a framework for rapid prototype design and manufacturing.
• Confirmed the adequacy of the mathematical model through experimental testing.

Conclusions:

• A systematic approach combining imaging, mathematical modeling, and simulation can significantly shorten cardiovascular implant preparation times.
• Patient-specific modeling ensures optimal implant geometry for improved hemodynamics.
• This integrated methodology facilitates timely surgical intervention with customized implants.