García Paez J M, Carrera San Martín A, García Sestafe J V, Millán I, Jorge E, Candela I, Castillo-Olivares J L
Service of Experimental Surgery, Clínica Puerta de Hierro, Madrid, Spain.
J Thorac Cardiovasc Surg. 1990 Oct;100(4):580-6.
The limited durability of the valve bioprostheses made from calf pericardium is partially due to the calcification of this biomaterial and to mechanical fatigue of the tissue. The object of this study is to determine the harmful effect on the pericardial membrane of cutting caused by the suture thread by showing the different elastic behaviors of the biomaterials employed. This cutting stress is established during the process of molding the valve leaflet, creating a vulnerable point from the very moment of construction, which is an important factor in the limited duration of the bioprosthesis.
由小牛心包制成的瓣膜生物假体耐久性有限，部分原因是这种生物材料的钙化以及组织的机械疲劳。本研究的目的是通过展示所用生物材料的不同弹性行为，来确定缝线切割对心包膜的有害影响。这种切割应力在瓣膜小叶成型过程中产生，从构建的那一刻起就形成了一个薄弱点，这是生物假体使用寿命有限的一个重要因素。
