In the middle third of the 19th century, George Phillip Cammann became known for the stethoscope improvement that came to bear his name and for the development of the then-popular diagnostic technique of auscultatory percussion. During his postgraduate training at the Paris hospitals in 1828–1830, he acquired a special interest in auscultation while attending lectures given by a friend and colleague of Laennec's, French physician Pierre-Charles-Alexandre Louis (1787–1872). In his New York City practice, caring primarily for the working poor, he recognized the need for a better stethoscope and developed a modification that came to bear his name. He conducted research aimed at increasing the accuracy of physical diagnosis by improving and reporting on the technique of auscultatory percussion. An examination of the medical literature, both textbooks and journals, reveals the extent of influence that Cammann had on clinical practice resulting from his contributions to the improvement of the stethoscope and auscultatory percussion.

19 世纪中叶，乔治·菲利普·卡曼 (George Phillip Cammann) 因听诊器的改进（以他的名字命名）和当时流行的听诊敲击诊断技术的发展而闻名。1828 年至 1830 年在巴黎医院接受研究生培训期间，他在参加莱内克的朋友兼同事法国医生皮埃尔·查尔斯·亚历山大·路易斯（Pierre-Charles-Alexandre Louis，1787-1872 年）的讲座时对听诊产生了特殊的兴趣。在他在纽约市的实践中，他主要照顾工作穷人，他认识到需要更好的听诊器，并开发了一种以他的名字命名的改进型听诊器。他进行的研究旨在通过改进和报告听诊敲击技术来提高身体诊断的准确性。对医学文献（包括教科书和期刊）的检查揭示了卡曼对听诊器和听诊敲击法改进的贡献对临床实践的影响程度。