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Note that a gain dial of “0” effectively shuts off that channel.

•  Check the connection of the electrode discs to the preamplifier. 

Tighten all screw connections securely, but no more than finger 

tight. Clean any corroded or dirty connections with a cotton 

swab slightly moistened with alcohol.

•  If the skin is extremely dry or densely covered by hair, moisten 

the area with water or, alternately, use a salt-free electrode gel 

or lotion.

•  If the skin is excessively wet, dry off the skin.
•  Check the battery light. If it is on, replace the battery. If it 

appears that the battery is completely drained (i.e., no indicator 

light or meter activity) replace the battery. 

2.  If the meter needle seems to be stuck at the maximum

•  Lower the gain dial setting.
•  Turn the Myolab II power Off. Check all connections and then 

turn the power On again.

•  Check the gain switch setting.
•  Change the battery.

If the Myolab II continues to malfunction after you have taken the 

above actions, call the service department at Motion Control for 

further instructions 801.326.3434 or toll-free at 888.MYO.ARMS 

(696.2767), or Email: [email protected].

Caring for the Myolab II

The Myolab II is a sensitive medical instrument:

•  Always store the preamplifiers in their static protection bag 

when not in use.

•  Always store the Myolab II in its case when not in use.
•  Always pick up the preamplifiers by touching the center 

(ground) electrode first.

•  You can clean the preamplifiers by moistening a clean gauze 

pad with alcohol. Do not use soaps or other solutions as these 

will tend to leave a film on the electrodes and hinder their 

performance. 

Do not immerse the preamplifier in water!

•  Clean the Myolab II unit using a damp cloth. Do not allow 

moisture or contaminants to enter into the case.

Summary of Contents for Myolab II

Page 1: ...Myolab II Prosthetist Manual...

Page 2: ...2...

Page 3: ...yoelectric prosthetic device senses EMG signals from intact muscles and translates these signals into usable arm movements The Myolab II uses this same advanced sensing technology to provide artifact...

Page 4: ...plifiers are installed inside the socket of a prosthesis make sure that the socket provides adequate drainage for perspiration System Setup Changing Batteries Hold the Myolab II upside down with the b...

Page 5: ...to Monitor EMG Activity 1 To avoid static damage to the preamplifiers always ensure that the patient is at the same electrical potential as the Myolab Two good ways of doing this are a After properly...

Page 6: ...he EMG signal can occur if both preamplifiers are not in contact with the patient common ground during monitoring 4 Set the gain dials Gain A and Gain B to 0 5 Rotate the sound dials A and B to the le...

Page 7: ...ired level using the appropriate sound dial Note The pitch of the sound not the volume will increase with an increase in EMG signal intensity In addition the sound of each channel differentiates the t...

Page 8: ...he same function in the sound arm e g flexing the sound elbow and contracting the biceps simultaneously in both the remnant arm and Figure 5 the sound arm Figure 5 For both bilateral and unilateral am...

Page 9: ...ic socket Identify all potential EMG control sites in this manner 6 When probing EMG control sites for the Utah Artificial Arm use the A channel of the Myolab II to monitor the muscle the A muscle mos...

Page 10: ...ck feature of the Utah Artificial Arm instruct the patient to contract both the flexor and extensor muscles simultaneously in a quick but low strength co contraction followed by relaxation the motion...

Page 11: ...control To measure the EMG signal magnitude accurately set the gain dial on 10 and the gain switch on X1 B The muscle EMG signals should be controllable without spasmodic jumping or quivering C Contra...

Page 12: ...k all connections and then turn the power On again Check the gain switch setting Change the battery If the Myolab II continues to malfunction after you have taken the above actions call the service de...

Page 13: ...voltage Bias Current 1 picoamp Filtering 1st order high pass at 10 Hz 1st order low pass at 10 kHz Output Impedance 1 Ohm Output Current 6 mA Output voltage 9 V supply voltage 7 5 V output T Cable to...

Page 14: ...14...

Page 15: ...15 Alternate leads for use with Myolab II...

Page 16: ...2018 Motion Control Inc 1930001 Rev D 10 04 2018 F Motion Control Inc 115 N Wright Brothers Drive Salt Lake City UT 84116 801 326 3434 Fax 801 978 0848 Toll Free 888 696 2767 www UtahArm com...

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