血流的导管测量方法及其装置  

Method and Apparatus for Blood Flow Detection Bsed on Detention Catheter

作　　者：陈茂华[1] 胡爱萍[1] 包家立[1] 

机构地区：[1]浙江大学医学院生理学教研室,杭州310006

出　　处：《生物医学工程学杂志》2003年第4期657-660,共4页Journal of Biomedical Engineering

摘　　要：血流测量有稀释法、电磁血流钳、核磁共振、超声 Doppler等 ,这些方法对血流动力学研究都有一定的局限性。本文提出一种操作简单、性能可靠、价格低廉的血流测量技术 ,以满足血流动力学研究的需要。当流体流过导管时 ,在导管顶端和侧端会产生与流速平方成比例的差压。导管既可以测量血压或输药 ,又可以测量血流。经过临床脑血流测量表明这种血流测量方法可以记录动态血流图 。The methods for measurement of blood flow contain dilution, electromagnetism, nuclear magnetic resonance, Doppler etc. The dilution, which includes heat dilution, 131 Xe, etc., can not display the moving blood flow in real time. The expenses of nuclear magnetic resonance expenses are very high. Electromagnetism must be used in the surgical operation. And ultrasound Doppler can not record other parameters of hemodynamics synchronously. This paper brings up a kind of blood flow measuring method with simple operating rules, dependable performance, and low cost to meet the needs in hemodynamic studies. The differential pressure between stay and fluxion points of the tube is produced in proportion to the square of velocity while fluid flows through the tube. We not only measure blood pressure or transfer drug using the detention catheter with double chamber, but also detect the differential pressure related within blood flow. The result of detecting cerebral blood flow (CBF) in clinical setting shows this method can record the diagram of dynamic blood flow and is a valid was of detecting blood flow for hemodynamic studies.

关 键 词：血流 导管测量方法 装置 态血流图 血流动力学 

分 类 号：R318.01[医药卫生—生物医学工程]