良好的生物瓣膜材料除应消除其抗原成分外,还应保证无菌、具备一定的机械强度、柔软性能及防止胶原纤维溶解等不利变化。自1968年Carpentier采用戊二醛保存生物瓣膜材料以来,大量资料证明,它具有降低生物瓣膜抗原性、提高柔软性和耐力性的特点,已为国内外广泛推广使用。但目前对戊二醛保存组织的适宜浓度、温度和时间等意见尚不一致,以致影响临床效果的进一步提高。本实验应用不同浓度的戊二醛在不同温 Good biological valve material in addition to eliminating its antigen components, but also to ensure sterility, with a certain degree of mechanical strength, softness and prevent the dissolution of collagen fibers and other adverse changes. Carpentier since 1968, the use of glutaraldehyde preservation of biological valve material, a large number of data to prove that it has the biological valve antigenicity, improve softness and endurance characteristics, has been widely used at home and abroad. However, the current concentration of glutaraldehyde preservation organizations, temperature and time opinions are not the same, so as to further improve the clinical effect. In this experiment, different concentrations of glutaraldehyde at different temperatures