| 超微孔膨体聚四氟乙烯人工心脏瓣膜体外流体力学的评价 |
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| 引用本文： | 梁勇,王武军,蔡开灿.超微孔膨体聚四氟乙烯人工心脏瓣膜体外流体力学的评价[J].南方医科大学学报,2002,22(10):910-911. |
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| 作者姓名： | 梁勇 王武军 蔡开灿 |
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| 作者单位： | 第一军医大学南方医院胸心血管外科,广东广州,510515 |
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| 基金项目： | 广东省科委重点攻关项目(99B06702G) |
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| 摘 要： | 目的采用新型高分子材料制备人工心脏瓣膜,并对其体外流体力学特征作出评价。方法将片状超微孔膨体聚四氟乙烯材料缝制于弹性支架上做成人工心脏瓣膜,以Baxter人工双叶机械瓣作对照,对新型瓣膜进行了静态泄漏和定常流测试。结果两种瓣膜静态泄漏率无显著差异(P>0.05),定常流下高分子瓣膜跨瓣压差更低,两组间存在显著差异(P<0.001)。结论新型高分子人工心脏瓣膜体外流体动力学性能优于Baxter机械瓣。
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| 关 键 词： | 超微孔膨体聚四氟乙烯 流体动力学 人工心脏瓣膜 |
| 文章编号： | 1000-2588(2002)10-0910-02 |
| 修稿时间： | 2002年4月23日 |
Hydrodyamical assessment of valve prosthesis made of expanded ultra-microporous Teflon in vitro |
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| LIANG Yong,WANG Wu-jun,CAI Kai-can.Hydrodyamical assessment of valve prosthesis made of expanded ultra-microporous Teflon in vitro[J].Journal of Southern Medical University,2002,22(10):910-911. |
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| Authors: | LIANG Yong WANG Wu-jun CAI Kai-can |
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| Affiliation: | LIANG Yong,WANG Wu-jun,CAI Kai-can Department of Cardiothoracic Surgery,Nanfang Hospital,First Military Medical University,Guangzhou 510515,China |
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| Abstract: | Objective To assess the hydrodyamical performance of the valve prosthesis made of expanded ultra-microporous Teflon in vitro. Method Sheets of the expanded ultra-microporous Teflon were sewn onto flexible bracket to prepare artificial valve prosthesis. The leakage and steady flow of the valve prosthesis was tested in vitro with Baxter valve prosthesis as con-trol. Results The rate of leakage of this new valve prosthesis was similar to that of Baxter valve prosthesis (P>0.05), and the systolic pressure gradient of the former was much lower than control(P<0.05). Conclusion This new artificial valve prosthesis has good in vitro hydrodyamical properties, which are superior to Baxter valve. |
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| Keywords: | expanded Teflon microporous valve prosthesis hydrodyamics heart valve prosthesis |
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