Hammer F D, Rousseau H P, Joffre F G, Sentenac B P, Tran-Van T, Barthelemy R P
Department of Radiology, Centre Hospitalier Universitaire de Rangueil, Toulouse, France.
J Vasc Interv Radiol. 1994 Nov-Dec;5(6):869-76. doi: 10.1016/s1051-0443(94)71627-4.
The authors tested in vitro nine caval filters to evaluate clot-trapping capacity and transfilter pressure gradients under varying experimental conditions.
The filtering efficiency of the stainless-steel Greenfield filter was evaluated in a modified flow model. A total of 2,100 clots were injected. In addition, controlled parameters simulating in vivo conditions were selected to appreciate clot-trapping capacity and pressure gradients for nine filters in horizontal and vertical positions, by using small (3 x 30 mm) and medium-sized (5 x 30 mm) clots. Statistical evaluation was performed for 3,600 clot deliveries.
Depending on experimental conditions, the clot-trapping capacity of the Greenfield filter varied greatly (0%-78%) by using small and medium clots. Bird's Nest and Simon nitinol filters demonstrated the highest filtering efficiency (94%-100%) for small clots. Medium clots were effectively captured by Bird's Nest, Simon nitinol, Antheor, and Günther Tulip filters (79%-100%).
Experimental parameters influence a filter's clot-trapping capacity. Bird's Nest filters demonstrated the highest clot-trapping capacity.
作者在体外测试了9种腔静脉滤器，以评估在不同实验条件下的血栓捕获能力和滤器压力梯度。
在改良的血流模型中评估不锈钢Greenfield滤器的过滤效率。共注入2100个血栓。此外，选择模拟体内条件的控制参数，通过使用小（3×30mm）和中等大小（5×30mm）的血栓，来评估9种滤器在水平和垂直位置的血栓捕获能力和压力梯度。对3600次血栓输送进行了统计评估。
根据实验条件，使用小血栓和中等大小血栓时，Greenfield滤器的血栓捕获能力差异很大（0%-78%）。鸟巢型和西蒙镍钛诺滤器对小血栓的过滤效率最高（94%-100%）。中等大小的血栓能被鸟巢型、西蒙镍钛诺、安特奥和冈特郁金香型滤器有效捕获（79%-100%）。
实验参数会影响滤器的血栓捕获能力。鸟巢型滤器的血栓捕获能力最高。
