The invention discloses a natural polymer hydroxyapatite two three-dimensional network structure of bone tissue engineering scaffold material and its preparation method, is a natural polymer mixed with hydroxyapatite nanorods using nontoxic genipin cross-linked natural polymer porous scaffolds by freeze-drying preparation with nano crystal seeds, and then use the simulated body fluid for biomineralization the seed, by forming a layer of nano hydroxyapatite three-dimensional network structure in the natural polymeric scaffold pore wall has a three-dimensional network structure on the micron level. The invention is a natural polymer hydroxyapatite two dimensional network structure of bone tissue engineering scaffold not only has good biocompatibility, nontoxic and have high biological activity, indicates that this kind of material has wide application prospect in repair medicine.
【技术实现步骤摘要】
【技术保护点】
1.一种天然高分子-羟基磷灰石二级三维网络结构骨组织工程支架材料,由天然高分子材料与纳米羟基磷灰石采用诱导模拟生物矿化的方法制得;其特征在于:所述支架EEE材料由两级网络结构组成,一级结构为由天然高分子组成的三维网络结构,其壁厚为1-3微米,孔道直径为50-150微米,二级结构为在一级结构孔道表面形成的由纳米羟基磷灰石组成的三维网络结构,其壁厚为20-40纳米,孔道直径为100-120纳米;其中,所述天然高分子材料是壳聚糖或I型胶原蛋白,所述纳米羟基磷灰石是直径20±5纳米、长度120±50纳米的羟基磷灰石纳米棒,所述天然高分子材料与纳米羟基磷灰石复合的重量比例是4:1-2:1。
【技术特征摘要】
【专利技术属性】
技术研发人员:刘宏,王冠聪,赵洪石,任娜,陈丽梅,李建华,梁小萌,刘铎,江怀东,陶绪堂,王继扬,
申请(专利权)人:山东大学,
类型:发明
国别省市:88
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