Patent ID: 6019187
Filing Date: 2000-02-01
Classification: A61B

Abstract:
In combination with a stethoscope, the stethoscope having a high frequency pickup, the pickup having a supplied diaphragm in the pickup, having an inner edge encircling the diaphragm, and having an outer edge encircling the inner edge, the supplied diaphragm being located at a diaphragm recess away from a surface contacted by the stethoscope when the stethoscope is used, a cover diaphragm, the cover diaphragm comprising:an outer band encircling the pickup outer edge;an annulus, the annulus being attached to the outer band and extending to just beyond the pickup inner edge;an inner band, the inner band being attached to the annulus and the inner band being encircled by the outer band;a disc, the disc being attached to the inner band, the disc being located at a disc recess away from the annulus, the disc recess matching the diaphragm recess, and the disc being the only element on the pickup which attenuates low frequency sounds when the supplied diaphragm is removed.