Electronic stethoscope
    3.
    发明授权

    公开(公告)号:US5825895A

    公开(公告)日:1998-10-20

    申请号:US685451

    申请日:1996-07-19

    IPC分类号: A61B7/00 A61B7/04

    CPC分类号: A61B7/04 A61B7/003

    摘要: An 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.

    Electronic stethoscope
    7.
    发明授权

    公开(公告)号:US6005951A

    公开(公告)日:1999-12-21

    申请号:US42705

    申请日:1998-03-17

    IPC分类号: A61B7/00 A61B7/04

    CPC分类号: A61B7/04 A61B7/003

    摘要: An 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.

    Electronic stethoscope
    9.
    发明授权

    公开(公告)号:US6002777A

    公开(公告)日:1999-12-14

    申请号:US40166

    申请日:1998-03-17

    IPC分类号: A61B7/00 A61B7/04

    CPC分类号: A61B7/04 A61B7/003

    摘要: An 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.