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Littmann Stethoscopes |
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Why HM
International? |
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FREE
shipping in the US
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When you
buy from us direct, you get genuine Omron and 3M Littmann products at great
prices because we are authorized distributors of Omron
Healthcare, Inc. and 3M Littmann Stethoscopes.
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We do not
sell refurbished merchandise.
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Turntable Technology |
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| 3MT Littmann®
Stethoscopes - The Creators of Tunable
Technology |
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Littmann
stethoscope's tunable diaphragm technology
offers enhanced acoustics, versatility and
timesaving convenience. |
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Switching
between bell and diaphragm modes is as
easy as a simple pressure change on the
chestpiece. There is no longer a need to
remove, index and replace for same site
auscultation. |
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Bell Mode
(low-frequency)
Light contact with chestpiece allows you
to hear low-frequency sounds. |
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Diaphragm
Mode (high-frequency)
Without turning the chestpiece over, use
firm pressure to hear high-frequency
sounds. |
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Tunable
Diaphragm Specifics |
Traditional
combination chestpieces have a bell and
diaphragm. The bell is meant to be used for
low frequency sounds. The diaphragm should be
used for high frequency sounds. Several years
ago, Littmann stethoscopes introduced a
unique, single-sided chestpiece on the Master
Cardiology and Master Classic II Stethoscopes.
This single-sided chestpiece, combines both
bell and diaphragm modes into one side. The
construction of the suspended diaphragm
membrane, combined with the internal
attenuater ring within the chestpiece result
in what is referred to as a "tunable
diaphragm." |
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Advantages of
Using a Tunable Diaphragm |
When using a
stethoscope with a tunable diaphragm, the user
does not have to remove the chestpiece from
the patient in order to change from the bell
to diaphragm mode. Also, the chestpiece is
shaped to provide a more comfortable grip for
better feel and control.
When listening to low frequency sounds with a
tunable diaphragm as opposed to a bell, there
will be an increase in amplitude, or loudness.
This is because the sound is coming through a
diaphragm with a larger surface area, as
opposed to the smaller opening on a standard
bell. The sound pressure level increases with
an increase in contact area on the patient. |
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