机械心瓣关闭速率的实时激光诊断  

REAL TIME LASER DIAGNOSIS OF INSTANTANEOUS CLOSING VELOCITY (RLDICV) OF MONOLEAFLET MECHANICAL HEART VALVE PROSTHESIS

作　　者：刘昌文[1] 王仕康[1] 刘杰[1] 曲修志 师朝晖 

机构地区：[1]天津大学机械工程学院,天津300072

出　　处：《中国生物医学工程学报》1999年第3期325-330,共6页Chinese Journal of Biomedical Engineering

基　　金：国家自然科学基金

摘　　要：针对现行激光 扫掠法测量关闭 速率不具备实 时性的弱点， 本文采 用计数 型信号 处理 技术及 微机 高速数据采集方 法，构成了机械 心瓣关闭速率 激光诊断的实 时信 号处理 系统。利 用该 系统的 实时性 ，由大量的实时 数据可获得 心瓣 关闭 速率 的统计 特性 。本文 在介 绍激 光扫 掠方 法的 基础 上，介 绍了实时信号处 理系统的原理 及构成，并给出 了单叶碟型机械 心瓣关闭速率的 实测结果。In order to overcome the weakness of existing laser sweeping technique (LST) without real time ability to measure the instantaneous closing velocity of mechanical heart valve prosthesis (MHVP), a new RLDICV system was presented, in which a real time signal processing of instantaneous closing velocity was realized by combining digital counting processing method and computer sampling technique. After a brief review of LST, the principle and construction of the signal processor was discussed in detail. The statistical behavior of MHVP closure could be drawn out from large number of real time reality of instantaneous closing velocity obtained by using the new RLDICV system. The system was used for the diagnosis of leaflet closing velocity of a monoleaflet type MHVP, and the obtained experimental results were comparable with those of the previous one presented in[1].

关 键 词：人工心瓣 激光扫掠法 关闭速率 实时测量 

分 类 号：R654.204[医药卫生—外科学] R318.11[医药卫生—临床医学]