Parts of a Stethoscope

Parts of a Stethoscope







































  • Earpieces - Earpieces are the small tips on the ends of the ear tubes that fit into your ears. Some stethoscopes may have a choice of hard plastic or soft silicone earpieces.
  • Ear tube - The ear tubes are hollow metal tubes that connect to the acoustic tubes on one end and the earpieces on the other.
  • Tubing - The soft flexible line of the stethoscope is known as its tubing. The purpose of the tubing is to maintain and transfer the frequency / sound level that is captured by the diaphragm or bell and send it to the ear tubes where it can make its way to the users ears. Depending on the stethoscopes make and model the tubing may be made with a single tube or dual lumen tube design that connects to the metal/steel ear tubes.
  • Headset - The headset is the combined components of the upper half of the stethoscope which include the ear tubes, tension springs and Earpieces. This allows sound to flow efficiently into the ear canal so that their is minimal disturbance from the stethoscope.
  • Stem - The stem is basically the metal  /steel part of the stethoscope that connects the stethoscopes tubing to the chest piece. Aside from connecting the two components of the stethoscope it also allows the user to switch / click between the chest pieces diaphragm and bell by turning the chest piece and clicking it into place via the ball bearing.
  • Chest piece - The chest-piece or head of the stethoscope is composed of the connected stem, diaphragm and/or bell. Depending on the stethoscope it may feature either a single-head or dual head design that may or may not contain a lower-frequency bell.
  • Diaphragm - The diaphragm is the large circular end of the chest-piece. This side of device allows medical professionals to listen to a wider area of the patients body and picks up higher frequency sounds than the bell half of the chest-piece.
  • Bell - The bell is the smaller circular end of the chest-piece. This side of the device focuses on a narrower range listens for lower-frequency sounds that may not easily be detected by the diaphragm.

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