永久性可植入式搏动流叶轮型人工心脏的探索与研究  

A Permanent Implantable Pulsatile Impeller Heart with a Specially Devised Needle Bearing

作　　者：钱坤喜[1] 曾培[1] 茹伟民[1] 袁海宇[1] 封志刚[1] 李岚[1] 

机构地区：[1]江苏理工大学医学工程所,镇江212013

出　　处：《生物医学工程学杂志》2001年第1期83-84,共2页Journal of Biomedical Engineering

基　　金：国家"九五"攻关!(96 -92 0 -12 -0 3)项目;国家自然科学基金项目!(39970 736 )

摘　　要：我们研制的可植入式搏动流叶轮型人工心脏可辅助试验小牛血液循环数个月。试验终止大多由于机械轴承磨损 ,导致转子振动 ,直至血泵运行出现故障。若轴承不发生故障 ,试验可一直进行下去。试验中动物状况良好 ,所有血液生化数据均处于正常范围。为解决轴承磨损问题 ,我们研制了一种特殊的滚针轴承 ,其中滚针由超高分子量聚乙烯制成 ,磨损寿命在一年以上。The author's implantable pulsatile impeller pump can assist the circulation of the calves for several months. The termination of the experiments was related to wear of the mechanical bearing, which resulted in vibration of the rotor and pump failure. It seemed as if the experiments could have lasted indefinitely if the bearing had not failed. To solve the problem of bearing wear, a specially devised rolling bearing was investigated and applied to the impeller pump. Its service life is more than 10 years due to the wear-proof roller made of ultra-high-molecular weight polythene. This newly devised impeller heart promises to have long-term and permanent applications. Compared with the magnetic bearing, the rolling bearing has the advantages of simpler construction and control, no consumption of energy, and better reliability.

关 键 词：叶轮型人工心脏 左心室辅助 长期存活 滚针轴承 

分 类 号：R318.1[医药卫生—生物医学工程]