The Multibody Dynamics Model and Experimental Verification to Study the Trackability of GuideWires in Tortuous Vessels

Guidewires are medical instruments widely used in percutaneous coronary intervention. At present, many different types of interventional guidewires have been developed to adapt to different clinical environments. These clinical environments require specific performance indicators of the guidewires. In order to assist the design and optimization of the guidewire, this paper proposes a multibody dynamics model. A series of parameter articulated rigid rods were defined to simulate the guidewire, the motion, and deformation of the guidewire when it passes through the tortuous vessel can be simulated. In order to verify the feasibility of the model, a set of guidewire testing devices was designed to test the guidewire passing through a tortuous vessel model. The feasibility of the guidewire model was verified by comparing the simulation results with experimental data. The developed model in this study can be extended to the correlation study of other clinical performance and mechanical properties of guidewires.