Wintermantel E
Acta Neurochir (Wien). 1980;53(1-2):25-37. doi: 10.1007/BF02074518.
A new atraumatic method for patency and blood flow control of microvascular anastomoses has been developed. Sounds proximal and distal to a suture line are separately detected by means of two specially modified miniature microphones built together as an auscultation unit and named a diplo-microphone. Transmission of the two amplified signals to a loudspeaker as well as to an oscilloscope screen allows analysis of patency at the anastomosis. Photos taken of the sound waves are individual records characterizing blood flow on both sides of the suture line. The new method has been tested in carotid arteries of Wistar rats. Sounds at stenoses and end-to-end anastomoses have been detected, and several characteristics of postoperative sound waves have been worked out. The new method has turned out to be more sensitive in detecting medium-sized stenoses than radical pressure tests performed with forceps. Construction and application of a diplo-microphone are described. Auscultation results of normal and stenosed arteries are discussed.
一种用于微血管吻合术通畅性和血流控制的无创新方法已被开发出来。通过两个专门改装的微型麦克风分别检测缝合线近端和远端的声音，这两个麦克风组合在一起构成一个听诊单元，称为双麦克风。将两个放大信号传输到扬声器以及示波器屏幕上，可以分析吻合处的通畅情况。拍摄的声波照片是表征缝合线两侧血流的单独记录。这种新方法已在Wistar大鼠的颈动脉中进行了测试。已检测到狭窄处和端端吻合处的声音，并得出了术后声波的几个特征。结果表明，这种新方法在检测中等大小的狭窄方面比用镊子进行的根治性压力测试更敏感。本文描述了双麦克风的构造和应用。讨论了正常动脉和狭窄动脉的听诊结果。
