中国组织工程研究

• 心肺移植 heart-lung transplantation • 上一篇    下一篇

婴幼儿罗叶泵聚氨酯瓣膜的制作及功能测试

吴岳恒1,2,黄焕雷2,范瑞新2,祁周措1,姚丽明1,武长礼2,陆平兰2,成安衡1,肖学钧2   

  1. 广东省医学科学院,广东省人民医院,广东省心血管病研究所,1医学研究中心,2心外科,广东省广州市  510100
  • 收稿日期:2012-11-10 修回日期:2013-01-24 出版日期:2013-07-30 发布日期:2013-07-30
  • 通讯作者: 肖学钧,博士,主任医师,研究员,广东省人民医院、广东省心血管病研究所心外科,广东省广州市 510080 xiaoxuejun@tom.com
  • 作者简介:吴岳恒★,男,1980年生,湖南省株洲市人,汉族,2005年暨南大学毕业,硕士,助理研究员,主要从事心室辅助装置研究,生物材料和组织工程研究。 edgar_wu@yahoo.com.cn
  • 基金资助:

    国家自然科学基金资助(30901468);广东省教育部产学研结合项目基金资助(2008B090500210)。

Production and functional testing of polyurethane valve of the pediatric Luo-Ye pump

Wu Yue-heng1, 2, Huang Huan-lei2, Fan Rui-xin2, Qi Zhou-cuo1, Yao Li-ming1, Wu Chang-li2, Lu Ping-lan2, Cheng An-heng1, Xiao Xue-jun2   

  1. 1Medical Research Center, 2Department of Cardiovascular Surgery, Guangdong Provincial Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou  510100, Guangdong Province, China
  • Received:2012-11-10 Revised:2013-01-24 Online:2013-07-30 Published:2013-07-30
  • Contact: Xiao Xue-jun, M.D., Chief physician, Researcher, Department of Cardiovascular Surgery, Guangdong General Hospital, Guangdong Provincial Cardiovascular Institute, Guangdong Academy of Medical Science, Guangzhou 510100, Guangdong Province, China xiaoxuejun@tom.com
  • About author:Wu Yue-heng★, Master, Assistant researcher, Medical Research Center, Guangdong Provincial Cardiovascular Institute, Guangdong General Hospital, Guangdong Academy of Medical Science, Guangzhou 510100, Guangdong Province, China edgar_wu@yahoo.com.cn
  • Supported by:

    National Natural Science Foundation of China, No. 30901468*; Combining Production and Research Project of Ministry of Education of Guangdong Province, No. 2008B090500210*

摘要:

背景:现有成人罗叶泵使用机械瓣,但机械瓣膜的尺寸较大,对血液破坏较大,不适于婴幼儿心室辅助泵,故设计和制作尺寸小、血栓形成低的高分子瓣膜是目前研究的热点。
目的:设计和制作20 mL婴幼儿罗叶泵的瓣膜,并进行基本功能测试和疲劳测试
方法:通过MASTERCAM软件设计瓣膜尺寸和形状,通过制作瓣膜模具和注塑获得聚氨酯瓣膜;根据ISO5840的要求测试聚氨酯瓣膜的静止泄露、跨瓣压差和耐疲劳性能。
结果与结论:制作了聚氨酯三叶瓣膜,但注塑失败率较高;所制作的三叶瓣膜的基本功能基本符合ISO 5840的要求;聚氨酯瓣膜在连续运行1.0×107次后,20 mL罗叶泵的搏出量的变化率为5.2%。两个聚氨酯瓣膜保持完整,瓣叶无变化。说明设计并成功制作了聚氨酯三叶瓣膜;所制备的聚氨酯瓣膜能满足20 mL罗叶泵的需要,已具备了临床试验的能力。

关键词: 器官移植, 心肺移植, 心室辅助装置, 罗叶泵, 聚氨酯, 三叶瓣膜, 耐疲劳, 心脏装置, 国家自然科学基金

Abstract:

BACKGROUND: The mechanical valves used in the adult Luo-Ye pump have a large size and great destruction to blood, which are not suitable for infant ventricular assist pump. Therefore, designing and producing a high molecular valve with small size and low incidence of thrombosis is a research hotspot.
OBJECTIVE: To design and produce a valve of 20 mL infant Luo-Ye pump, and to test its basic functions and fatigue properties.
METHODS: The size and shape of valve was designed with MASTERCAM software, polyurethane valve was obtained through producing the valve model and plastic injection; the static leakage, pressure drop and fatigue resistance of polyurethane valve were tested according to the ISO5840 requirements.
RESULTS AND CONCLUSION: The polyurethane trefoil valve was produced, but the failure rate of plastic injection was high; the basic function of the trefoil valve met the ISO5840 requirements bascially; after continuously operated 1.0×107 times, stroke volume of 20 mL Luo-Ye pump was changed 5.2%, and two polyurethane valves and valve leaflets did not change and damage. Polyurethane trefoil valve was designed and produced successfully; polyurethane valves could meet the needs of 20 mL Luo-Ye pump, which already have the ability to clinical trials.

Key words: organ transplantation, heart-lung transplantation, ventricular assist device, Luo-Ye pump, polyurethane, trefoil valve, fatigue resistance, cardiac device, National Natural Science Foundation of China

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