Riester – Stethoscope Black Edition Duplex is an acoustic医疗的device for听诊，，，，or listening to the internal sounds of an animal or human body. It typically has a small disc-shaped resonator that is placed against the chest, and two tubes connected to earpieces. It is often used to listen to lung and心音。It is also used to listen tointestinesand blood flow in动脉and静脉。In combination with asphygmomanometer，通常用于测量blood pressure。Less commonly, “mechanic’s stethoscopes”, equipped with rod shaped chestpieces, are used to listen to internal sounds made by machines (for example, sounds and vibrations emitted by worn ball bearings), such as diagnosing a malfunctioning automobile engine by listening to the sounds of its internal parts. Stethoscopes can also be used to check scientific vacuum chambers for leaks, and for various other small-scale acoustic monitoring tasks. A stethoscope that intensifies听诊sounds is called语音镜。

听诊器通常被认为是医疗保健专业人员的象征，因为经常看到或描绘各种医疗保健提供者，脖子上挂着听诊器。2012年的一份研究论文声称，与其他医疗设备相比，听诊器对所见从业者所感知到的可信赖性具有最大的积极影响。^[13]

实用，广泛的出现便携式超声检查（Pary Point Pare Ultrasonography）在1990年代末至2000年代初期，一些医生询问听诊器才会多久过时的。^[14]Others answered that they thought the relationship of the various tools (stethoscopes and digital devices) would change but that it would be a long time before stethoscopes were obsolete.^[15]A decade later, in 2016, the same two sides of the coin were still recognized.^[16]一cardiologistsaid, “the stethoscope is dead”, but a pediatrician said, “We are not at the place, and probably won’t be for a very long time”, where stethoscopes were obsolete. One consideration is that it depends on the segment of卫生保健（（紧急医疗服务，，，，nursing，，，，药物）和专业。“听诊器保留了他们听的价值lungsandbowelsfor clues of disease, experts agree.”^[16]但是心血管系统，，，，“auscultation is superfluous”, one cardiologist said.^[16]Thus, it could be that cardiology in the次要and三级护理设置可能会在多年之前放弃听诊器初级卫生保健，，，，儿科，，，，and物理疗法做。