This preliminary CFD evaluation suggests that the WeFlow-Tribranch system has the potential to restore aortic arch hemodynamics and enhance LCCA perfusion in these specific cases. However, simulations indicated that the embedded branch design may compromise flow to the BCT or LSA in certain anatomical configurations, potentially inducing localized flow disturbances. These findings underscore the importance of patient-specific preoperative planning to anticipate perfusion changes and suggest that meticulous monitoring of branch patency is warranted. To fully evaluate its long-term performance and optimize its use, further studies involving larger patient cohorts and correlation with clinical outcomes are recommended.Clinical ImpactThe WeFlow-Tribranch™ system offers a modular, minimally invasive solution for complex aortic arch pathologies. This CFD study demonstrates that while the device restores organized aortic flow and improves LCCA perfusion, its embedded branch design introduces localized flow disturbances and patient-specific variations in BCT and LSA perfusion. For clinicians, these findings emphasize that anatomical feasibility alone is insufficient for patient selection. Meticulous pre-operative planning and rigorous post-operative surveillance of branch patency are essential to mitigate risks of thrombosis or ischemia induced by non-physiological wall shear stress.
Li et al. (Fri,) studied this question.