THE TENSILE-STRENGTH OF NATURAL AND CHEMICALLY MODIFIED BOVINE PERICARDIUM
THE TENSILE-STRENGTH OF NATURAL AND CHEMICALLY MODIFIED BOVINE PERICARDIUM
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DOI：
10.1002/jbm.820220202
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发表时间：
1988-02-01
期刊：
影响因子：
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通讯作者：
TROWBRIDGE, EA
中科院分区：
文献类型：
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作者：
CROFTS, CE;TROWBRIDGE, EA
在天然和化学修饰的牛心包上进行了无损和破坏性的单轴载荷试验。从同一部位的不同心包囊中用模板选择5个标本。在0.6 NMM的应力水平下，天然材料和化学改性材料中一个特定部位的平均最大延伸率显著大于其他部位。固定组织的最大延伸率显著大于天然组织(p<；0.01)。化学修饰后保留的天然材料的抗拉强度在解剖上也存在差异。然而，心包的整体抗张强度并没有通过这种方法增加。相反，戊二醛固定确实增加了这种生物材料发生骨折的应变百分比。
Nondestructive and destructive uniaxial load tests were performed on natural and chemically modified bovine pericardium. Five specimens were selected from the same sites in different pericardial sacs by using a template. The mean maximum extension of one particular site in both the natural and chemically modified material was significantly greater than that of the other positions at a stress level of 0.6 Nmm.-2 The maximum extensibility of the fixed tissue was significantly greater (p < 0.01) than that of the natural tissue. There was also an anatomical variation in tensile strength of the natural material which was retained after chemical modification. However, the overall tensile strength of the pericardium was not increased by this procedure. In contrast, glutaraldehyde fixation did increase the percentage strain at which fracture of this biomaterial occurred.