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Manufacture of patient-specific vascular replicas for endovascular simulation using fast low-cost method

机译:使用快速低成本的方法制造用于血管内模拟的患者专用血管复制品

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摘要

Patient-specific vascular replicas are essential to the simulation of endovascular treatment or for vascular research. The inside of silicone replica is required to be smooth for manipulating interventional devices without resistance. In this report, we demonstrate the fabrication of patient-specific silicone vessels with a low-cost desktop 3D printer. We show that the surface of an acrylonitrile butadiene styrene (ABS) model printed by the 3D printer can be smoothed by a single dipping in ABS solvent in a time-dependent manner, where a short dip has less effect on the shape of the model. The vascular mold is coated with transparent silicone and then the ABS mold is dissolved after the silicone is cured. Interventional devices can pass through the inside of the smoothed silicone vessel with lower pushing force compared to the vessel without smoothing. The material cost and time required to fabricate the silicone vessel is about USD $2 and 24 h, which is much lower than the current fabrication methods. This fast and low-cost method offers the possibility of testing strategies before attempting particularly difficult cases, while improving the training of endovascular therapy, enabling the trialing of new devices, and broadening the scope of vascular research.
机译:患者特定的血管复制品对于模拟血管内治疗或进行血管研究至关重要。硅胶复制品的内部必须光滑,以操纵介入设备而无阻力。在此报告中,我们演示了使用低成本台式3D打印机制造患者专用硅胶容器的过程。我们显示,通过3D打印机打印的丙烯腈丁二烯苯乙烯(ABS)模型的表面可以通过以时间依赖的方式一次浸入ABS溶剂中进行平滑处理,其中短暂浸入对模型形状的影响较小。血管模具涂有透明硅树脂,然后在硅树脂固化后将ABS模具溶解。与没有平滑装置的容器相比,介入装置可以以较低的推动力穿过平滑的硅胶容器的内部。制造有机硅容器所需的材料成本和时间约为2美元/ 24h,比目前的制造方法低得多。这种快速且低成本的方法提供了在尝试特别困难的病例之前进行测试策略的可能性,同时改善了血管内治疗的培训,使新设备得以试用并扩大了血管研究的范围。

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