Using The Wireless Emg Sensors; Orienting The Emg Sensors On The Skin; Cleaning The Sensor Site; Applying The Trigno Adhesive Skin Interfaces - Delsys Tringo User Manual

Using the Wireless EMG Sensors

Orienting the EMG Sensors on the Skin

Trigno EMG Sensors employ 4 silver bar contacts for detecting the
EMG signal at the skin surface. It is crucial that the orientation of
these bars be perpendicular to the muscle fibers for maximum
signal detection. The top of the sensor is shaped with an arrow to
aid in the determination of this orientation. The arrow should be
placed parallel to the muscle fibers underneath the sensor. The
sensor should also be placed in the center of the muscle belly away
from tendons and the edge of the muscle. The sensor is easily
attached to the skin using the Delsys Adhesive Sensor Interface.
Figure 6. EMG Sensors must be properly oriented with the muscle fibers. Align
the sensor's arrow with the direction of the underlying muscle fibers.

Cleaning the Sensor Site

Prior to affixing the EMG sensor on the surface of the skin, the
sensor site must be properly cleaned to remove dry dermis and any
skin oils. Wiping the skin prior to sensor application is critical. If
excessive hair is present, it will also be necessary to shave the site.
In cases where the skin is excessively dry, it may be useful to
dislodge dry skin cells by dabbing the site with medical tape. The
dry cells will attach the tape's adhesive when it is removed. Be sure
to wipe with isopropyl alcohol to remove any adhesive residue that
may remain.

Applying the Trigno Adhesive Skin Interfaces

Trigno System are supplied with specially-designed adhesive
interfaces to simplify sensor attachment. These hypo-allergenic
interfaces are manufactured from medical grade adhesive approved
for dermatological applications. Usage of the interface promotes a
high quality electrical connection between the sensor bars and the
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muscle-fiber direction
TM
Trigno Wireless System User's Guide