Biomechanical performance of the Bicaval Transcatheter System for the treatment of severe tricuspid regurgitation

Figures

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  FIGURE 1. Geometry with main dimension of (A) SVC device and (B) IVC device as well as the (C) primitive surface of each device.

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  FIGURE 2. Pre-TricValve flow velocities at inlet for each venous branch and pressure outlet boundary conditions for the tricuspid valve; flow and pressure values were set to zero during the systolic phase (from 0.25 s to 0.55 s) for the post-TricValve flow analysis.

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  FIGURE 3. Different phases of the deployment of the SVC device from the (A) uncrimped configuration to the (F) final deformed shape; intermediate steps of the (B–E) deployment are shown.

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  FIGURE 4. (A) deformed shape of implanted TricValve system for Case A and (B) angiographic images seen during the clinical procedure for the same patient.

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  FIGURE 5. (A) deformed shape of implanted TricValve system for Case B and (B) CT scan after TricValve implantation.

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  FIGURE 6. Regions of contact pressure for Case B model; black spots represent area of contact pressure at the magnitude of 0.01 MPa while labels indicates the location of peak values.

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  FIGURE 7. Maps of flow velocities for the TricValve implanted in Case A at (A) opened and (B) closed configuration of SVC and IVC valve leaflets obtained from SPH analysis.

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  FIGURE 8. Maps of time-averaged flow and pressure for pre- and post-TricValve computational fluid dynamic analyses of both patient cases.