Innovation: The heart of every 3M™ Littmann® Stethoscope
All 3M™ Littmann® Stethoscopes offer advanced sound acoustics and a comfortable fit, thanks to innovative features built into each stethoscope. Discover how each aspect works, and how they help you achieve your best in your profession.
Adjustable by squeezing or pulling apart the eartubes.
Adjustable by squeezing or pulling apart the eartubes.
Switch between hearing high- and low-frequency sounds by adjusting pressure on chestpiece.
Switch between hearing high- and low-frequency sounds by adjusting pressure on chestpiece.
To resist skin oils and alcohol, it is made without natural rubber latex or phthalate plasticizers.
To resist skin oils and alcohol, it is made without natural rubber latex or phthalate plasticizers.
Used to index, or open, the side of the chestpiece that you wish to use.
Used to index, or open, the side of the chestpiece that you wish to use.
Snap-tight and soft-sealing for an excellent acoustic seal and comfortable fit.
Snap-tight and soft-sealing for an excellent acoustic seal and comfortable fit.
Eliminates the rubbing noise typically heard when using traditional twin-tubed stethoscopes (only applicable to the 3M™ Littmann® Cardiology series).
Eliminates the rubbing noise typically heard when using traditional twin-tubed stethoscopes (only applicable to the 3M™ Littmann® Cardiology series).
Made of an aerospace aluminum alloy for strength and lighter weight.
Made of an aerospace aluminum alloy for strength and lighter weight.
Available as either a one-sided variant with tunable diaphragm, or a two-sided variant with a diaphragm on one side and a bell on the other.
Available as either a one-sided variant with tunable diaphragm, or a two-sided variant with a diaphragm on one side and a bell on the other.
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Hearing the highs and the lows
Various auscultation sounds occupy set regions in the low and high frequency ranges. As shown in the diagram above, some of these frequencies substantially overlap one another. Because of this, it is important for clinicians to isolate high and low frequencies, and detect and differentiate subtle sounds with their stethoscope.
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Tunable diaphragm technology makes auscultation more efficient. By adjusting the pressure applied to the chestpiece, clinicians can isolate each frequency range to discern subtle sounds.
Light pressure allows low-frequency sounds to be heard, while firm pressure will restrict the movement of the diaphragm membrane, block low-frequency sounds, and allow higher-frequency sounds to be heard.
Also, tunable technology is all about ease and simplicity for the user – it eliminates the need to remove, turn over, and reposition the chestpiece to hear different frequency ranges.
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Advantages of tunable technology
Convenience: Spend less time positioning stethoscopes to hear all sound frequencies
Comparison: Isolation of low and high frequencies provide critical comparisons that offer valuable assessments.
Consistency: You don’t have to worry about placing your diaphragm in the exact spot where you’ve picked up an anomaly. Simply apply pressure.
Chestpiece
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A precision-made masterpiece
3M™ Littmann® Stethoscope chestpieces are precision-machined to capture sounds while having an aesthetically pleasing, less angular shape. Chestpieces are either one-sided with a tunable diaphragm or two-sided with a diaphragm on one side and a bell on the other.
Chestpieces on the 3M™ Littmann® Classic III™ and 3M™ Littmann® Cardiology IV™ stethoscopes are double-sided with tunable diaphragms on the adult and pediatric sides, which means you only need one stethoscope to auscultate all ages and sizes of patients.
Connecting to the heart of the patient
It only takes 56 seconds to make a meaningful human connection with a patient – so why not use your stethoscope as a tool to impart a personal touch?
Find a combination that’s perfect for you.
Filter 3M™ Littmann® Cardiology IV™ and Classic III™ stethoscopes by tubing colour, chestpiece finish, and more.
View stethoscopes in the 3M™ Littmann® range
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3M™ Littmann® Cardiology Series
Sturdy, refined, and designed for superior acoustic performance.
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3M™ Littmann® Classic Series
Compact, sensitive and lightweight, it’s perfect for general physical assessments and diagnoses.
Ready to purchase a 3M™ Littmann® stethoscope? Here’s where you can get one online.
3M™ Littmann® Stethoscopes
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