| 摘要 |
<p>A collagen material comprising a laminate of a multilayer structure of an ultrafine fibrous nonwoven fabric of collagen sandwiched between nonfibrillated collagen layers; a filamentous material comprising the collagen material; a process for producing the same; and a medical material comprising the collagen material, particularly a medical film substitute comprising the medical material. These materials are produced from collagen without using synthetic polymer material, have such a property as to permit suturing while maintaining the biochemical characteristics inherent in collagen. Further, the medical film substitute can be used as a material for making up for a defective portion of a biological membrane, such as a dura mater, heart sac, pleura, peritoneum, or chorion, poses no moral problem, can be stably supplied, have no fear of infection, causes no denaturation of cells, can control the degradation rate after application to the organism, and can promote the regeneration of a biological membrane.</p> |
