Virtual flow diverter deployment techniques underwent significant development during the last couple of years. Each existing technique displays advantageous features, as well as significant limitations. One common drawback is the lack of quantitative validation of the mechanics of the device. In the following work, we present a new spring‐mass‐based method with validated mechanical responses that combines many of the useful capabilities of previous techniques. The structure of the virtual braids naturally incorporates the axial length changes as a function of the local expansion diameter. The force response of the model was calibrated using the measured response of real FDs. The mechanics of the model allows to replicate the expansion process during deployment, including additional effects such as the push‐pull technique that is required for the deployment of braided FDs to achieve full opening and proper wall apposition. Furthermore, it is a computationally highly efficient solution that requires little pre‐processing and has a run‐time of a few seconds on a general laptop and thus allows for exploratory analyses. The model was applied in a patient‐specific geometry, where corresponding accurate control measurements in a 3D‐printed model were also available. The analysis shows the effects of FD oversizing and push‐pull application on the radial expansion, surface density, and on the wall contact pressure.

中文翻译：

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一种新颖的虚拟分流器植入方法，具有逼真的部署机制和经过验证的力响应。

在过去的几年中，虚拟分流器部署技术得到了重大发展。每种现有技术均显示出有利的特征以及明显的局限性。一个普遍的缺点是缺乏对设备力学的定量验证。在接下来的工作中，我们提出了一种新的基于弹簧质量的方法，该方法具有经过验证的机械响应，并结合了先前技术的许多有用功能。虚拟编织物的结构自然包含轴向长度的变化，该变化是局部膨胀直径的函数。使用实测FD的响应来校准模型的力响应。该模型的机制允许在部署过程中复制扩展过程，包括其他效果，例如部署编织FD以获得完全打开和适当的墙体布置所需的推拉技术。此外，它是一种计算效率很高的解决方案，几乎不需要预处理，并且在普通笔记本电脑上的运行时间仅为几秒钟，因此可以进行探索性分析。该模型适用于患者特定的几何形状，也可以在3D打印的模型中进行相应的精确控制测量。分析显示了FD尺寸过大和推挽式应用对径向膨胀，表面密度和壁接触压力的影响。它是一种计算效率很高的解决方案，几乎不需要预处理，并且在普通笔记本电脑上的运行时间仅为几秒钟，因此可以进行探索性分析。该模型适用于患者特定的几何形状，也可以在3D打印的模型中进行相应的精确控制测量。分析显示了FD尺寸过大和推挽式应用对径向膨胀，表面密度和壁接触压力的影响。它是一种计算效率很高的解决方案，几乎不需要预处理，并且在普通笔记本电脑上的运行时间仅为几秒钟，因此可以进行探索性分析。该模型适用于特定于患者的几何形状，也可以在3D打印的模型中进行相应的精确控制测量。分析显示了FD尺寸过大和推挽式应用对径向膨胀，表面密度和壁接触压力的影响。