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公历1815年法国年轻医师兰湼克氏(Rene The-ophlle Hyacinthe Laennec 1781-1826)在法国学校集会上第一次将他所创制的听诊器作公开试用。这个器具有26公分长,10公分的直径,在放在病人胸部的一端有一个吻口器(即喇叭口样的东西以便密贴肌肉上),显然它还是相当粗笨的。在此以前兰氏因为想把病人的心音听得更清楚些,曾经把纸张做成一个卷简来应用;这就是他进一步设计听诊器的根据。他初次制成的听诊器不免有许多不够方便之处,所以又曾把它精细地镞成一根长32.5公分,径3.6公分粗中间空心的管形物,重量则有230公分(合市秤七两,宝不算轻);原物至今还藏在法国国家博物院里。1816年兰氏在奈格医院和他的同僚们努力工作,而在1818年就发表了那篇著名的论文:「间接的
Gregorian calendar Rene The-ophlle Hyacinthe Laennec (1881-1826), a young French physician in 1815, made the first trial of his stethoscope at a French school rally. The device has a length of 26 cm and a diameter of 10 cm. It is obviously still rather stupid when there is a stapler on the patient’s chest (that is, a bell-shaped object for the muscular attachment). Before that, Lan had made a simple application of paper because he wanted to make the patient’s heart sounds clearer. This is the basis for his further design of the stethoscope. His stethoscope made for the first time inevitably has many inconvenient places, so it has once again finely turned into a 32.5 cm long, diameter of 3.6 cm thick middle hollow tube, the weight is 230 cm , Treasure is not light); The original is still hidden in the French National Museum. In 1816, Lang worked hard at his hospital and his colleagues, and in 1818 published his famous essay: "Indirect