3M™ Littmann® Stethoscopes Using Tunable Technology

  • Two diagrama - slight pressure applied to the tunable diaphragm to pick up low frequency sounds.
    • Easily shift between listening to high or low frequencies.

    • Tunable diaphragm technology is a 3M invention that helps make auscultating a patient easier and more effective. It lets you hear different types of sounds by simply adjusting the amount of pressure you apply to the chestpiece of your 3M™ Littmann® Stethoscope.

    • Nearly all Littmann stethoscopes feature at least one tunable diaphragm. (The exceptions: electronic, paediatric, and infant models.) Their tunable technology virtually eliminates the need to remove, turn over, and reposition the chestpiece just to hear different sounds.

    • While other stethoscope brands require unscrewing and changing diaphragms and bells, Littmann stethoscopes are all about ease and simplicity.

    • To hear low-frequency sounds, rest the chestpiece lightly on the patient. In this position, the diaphragm membrane is suspended, allowing it to resonate low-frequency sounds.

    • To hear high-frequency sounds, apply firm contact pressure to the chestpiece. By pressing on the chestpiece, the movement of the diaphragm membrane is restricted. This blocks (or attenuates) low-frequency sounds which allows you to hear higher-frequency sounds.