Instructions for Use
Chest piece
On Littmann Classic II stethoscopes with traditional combination chest pieces, it is necessary to open the side of the chest piece being used. This is accomplished by holding the chest piece stem in one hand and rotating the chest piece with the other hand until a click is felt.
Changing Frequencies Using the Tunable Diaphragm
Your 3M™ Littmann® Classic II S.E. Stethoscope is equipped with a tunable diaphragm that enables you to listen to both low and high-frequency sounds without turning over the chest piece.
Low frequencies:
[1] To listen to low-frequency sounds, (traditional bell mode) you can use either the open bell or tunable diaphragm using very light skin contact.
High frequencies:
[2] To listen to higher frequency sounds, using the tunable diaphragm, press firmly on the chest piece.
To listen to low and high-frequency sounds without removing and turning over the chest piece, simply alternate between light and firm pressure on the tunable diaphragm.
Headset Adjustment
[3,4] Your Littmann stethoscope is designed to provide a comfortable, acoustically sealed ear fit. Notice that the ear tubes are set to accommodate the typical anatomy of the ear canal. The ear tips should point in a forward direction as you insert them into your ear canals.
[5] To reduce spring tension in the headset, hold each ear tube at the bend near the ear tip and gradually pull apart until fully extended.
[6] To increase spring tension, grasp the headset with one hand where the ear tubes enter the tubing and squeeze until the tubing on one ear tube touches the other. Repeat as necessary.
[7] For maximum acoustic performance, comfortable patented 3M™ Littmann® Snap Tight Soft-Sealing Ear tips are provided with your stethoscope. This stethoscope utilizes a unique design for attaching the ear tip to the ear tube. The ear tips are pushed onto the end of the ear tube and snapped firmly into place. To remove, pull firmly on the ear tip.
Removing the Diaphragm and Cleaning the Chest piece
[8] With the diaphragm side up, grasp the rim with the thumbs and index fingers of both hands and roll the rim off the edge of the chest piece. Remove the diaphragm from the rim and clean the parts in soapy water or wipe with alcohol. Chest piece surfaces can be wiped with alcohol or soapy water. Dry all parts and surfaces thoroughly before reassembly.
Find your replacement parts here to maintain peak acoustic performance: 40005 Black or 40006 Grey
Assembly and Replacement of the Tunable Diaphragm
[9] Using your fingertip, apply a small amount of talcum powder to the inside surface of the flexible edge of the diaphragm. This will facilitate assembly and maintain smooth and quiet low/high frequency alternation. Snap the diaphragm with your fingers to remove excess talc.
[10] Insert the flexible edge of the diaphragm into the groove of the rim. This is best accomplished by starting with the rim positioned above the legible side of the diaphragm.
[11] Visually examine the ring to ensure that the flexible edge is smoothly engaged inside the rim. If necessary, flex the assembly by pinching the outer rim edge between the thumb and fingers. Repeat this flexing procedure after rotating the assembly one quarter.
[12] To attach the rim/diaphragm assembly to the chest piece, engage the groove of the rim (with the diaphragm attached) around the chest piece at one point and hold it in place with your thumbs.
[13] Slowly roll the rim around and over the chest piece edge using both thumbs, moving in opposite directions around the chest piece.
[14] Visually inspect the edge where the diaphragm engages the rim for uniform containment. Minor adjustments may be made by slightly pulling and rolling the rim away from the diaphragm, allowing the diaphragm to slip into position.
General Use and Maintenance
- Avoid extreme heat, cold, solvents, and oils.
- The entire stethoscope can be wiped. Clean with alcohol or soapy water.
- Ear tips can be removed from the ear tubes for thorough cleaning.
NOTE: Do not immerse your stethoscope in any liquid or subject it to steam sterilization. If disinfection is required, the stethoscope may be wiped with a 70% isopropyl alcohol solution.
3M™ Littmann® Classic II S.E. Stethoscope Service and Warranty Program
Your 3M Littmann stethoscope comes with the finest service and warranty policy in the industry.
The 3M™ Littmann® Classic II S.E. Stethoscope is warranted against any defects in material and workmanship for a period of three (3) years. If a material or manufacturing defect is discovered during the warranty period, repairs will be made without charge upon the return of the instrument to 3M, except in cases of obvious abuse or accidental damage.
For maintenance or repair services outside of the U.S. and Canada please contact an authorized 3M Littmann distributor like ahealthcare.com or stethoscope.eu for maintenance and repair information or check this blog post on How to Properly Restore a Silent Stethoscope
Explanation of Symbols
Attention, see instructions for use.
This product and package do not contain natural rubber latex.
3M, Littmann, the L Littmann logo, and the Lare trademarks of 3M, used under license in Canada.
Please recycle. Printed in U.S.A.
© 2010, 3M. All Rights Reserved.
