ApplicationNo. 040166 filed on 03/17/1998
US Classes:381/67, STETHOSCOPES, ELECTRICAL181/131, Stethoscope600/528, Detecting heart soundD24/134Stethoscope (24)
ExaminersPrimary: Isen, Forester W.
Assistant: Mei, Xu
Attorney, Agent or Firm
Foreign Patent References
International ClassA61B 007/04
AbstractAn electronic stethoscope having several modes of operation to process acoustic signals to provide filtered signals useful for diagnosis. In one mode of operation the stethoscope substantially provides only acoustic signals generated by biological activity of the heart. In another mode of operation, the acoustic stethoscope substantially provides only acoustic signals generated by biological activity of the lungs. In another mode of operation, the electronic stethoscope disproportionately amplifies abnormal heart sounds and normal heart sounds to enhance diagnosis of heart abnormalities. The electronic stethoscope is operated in a manner similar to a conventional acoustic stethoscope and has similar spectral characteristics, thus allowing a user with acoustic stethoscope experience to easily use the electronic stethoscope.