Jansen J, Willeke S, Reiners B, Harbott P, Reul H, Lo H B, Däbritz S, Rosenbaum C, Bitter A, Ziehe K
Helmholtz-Institute for Biomedical Engineering, Aachen, FRG.
ASAIO Trans. 1991 Jul-Sep;37(3):M451-3.
The three leaflet J-3 valve is manufactured in a medium open position with almost flat leaflets, whereby the stent is expanded by a cone shaped mold. After manufacturing, the dipcoated leaflets have stable closed and open positions. The transition succeeds with very low membrane stresses. Due to this design, the J-3 polymer valve showed superior hydrodynamic performance compared with commercial valves. In durability tests, prototypes have reached lifetimes up to 17 years. While animal tests are encouraging, they also reveal needed manufacturing improvements.
三叶形J-3瓣膜在制造时处于中等打开位置，瓣叶几乎是平的，通过一个锥形模具扩张支架。制造完成后，浸涂的瓣叶具有稳定的关闭和打开位置。转变过程中的膜应力非常低。由于这种设计，J-3聚合物瓣膜与商用瓣膜相比表现出卓越的流体动力学性能。在耐久性测试中，原型产品的使用寿命已达17年。虽然动物试验结果令人鼓舞，但也揭示了制造方面仍需改进之处。
