Stethoscope with frictional noise reduction
First Claim
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1. A stethoscope, comprising:
- a sound receiving member comprising electronic components adapted to receive and transmit sounds;
an outer surface at least partially defined by the sound receiving member; and
means for reducing frictional noise, the means for reducing frictional noise comprising a low friction material and being coupled to at least a portion of the outer surface.
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Abstract
A stethoscope is provided, comprising: a sound receiving member (12) for receiving sounds, the sound receiving member capable of transmitting sound received thereby; a head set coupled to the sound receiving member to receive sound transmitted by the sound receiving member; means for reducing frictional noise, said means associated with the sound receiving member to reduce noise caused by relative movement between a surface and the sound receiving member of the chestpiece in contact with the surface.
73 Citations
15 Claims
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1. A stethoscope, comprising:
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a sound receiving member comprising electronic components adapted to receive and transmit sounds; an outer surface at least partially defined by the sound receiving member; and means for reducing frictional noise, the means for reducing frictional noise comprising a low friction material and being coupled to at least a portion of the outer surface. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. The stethoscope of clam 1, further comprising a head set electronically coupled to the sound receiving member to receive sound transmitted by the sound receiving member.
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11. The stethoscope of clam 1, wherein the sound receiving member comprises an electronic component selected from the group consisting of a transducer, microphone, and piezoelectric element.
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12. The stethoscope of clam 1, wherein the means for reducing frictional noise reduces the frictional noise levels without reducing the base signal.
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13. The stethoscope of clam 1, wherein the means for reducing frictional noise over the frequency range from about 10 to about 1000 Hz is effective to reduce the average frictional noise level by at least about 3 dBA.
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14. The stethoscope of clam 1, wherein the means for reducing frictional noise over the frequency range from about 10 to about 1000 Hz is effective to reduce the average frictional noise level by at least about 5 dBA.
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15. The stethoscope of clam 1, wherein the means for reducing frictional noise over the frequency range from about 10 to about 1000 Hz is effective to reduce the average frictional noise level by about 17 dBA.
Specification