Suggested Electrode
Placement Chart
The sticky electrode pads need to
be placed in the correct position
for maximum pain relief. It is pref-
erable to obtain assistance from
either your birthing partner or
medical adviser when positioning
the pads. Please read the following
instructions carefully:
1.
Ensure unit remains switched
off. Carefully peel the pads from
the plastic backing using your
forefinger and thumb. Do not pull
on the lead wires.
2.
Position the top two pads
(connected to the left socket CH1)
approximately 4cm either side of
the spine and 4-5cm above the
imaginary navel line as seen in the
diagram.
3.
Position the bottom two pads
(connected to the right socket
CH2) approximately 4cm either
side of the spine and 4-5cm below
the imaginary navel line as seen in
the diagram.
Reference: Cluett E. (1994) SRN
RM ADM PGCEA. Analgesia in
Labour: A review of the TENS
method. Professional Care of
Mother and Child. Mar;4 (2): 50-2.
Frequently Asked Questions
Q When shall I start using my
Obi TENS+?
A Use as early as you can after
the onset of labour to allow
time for your body’s pain-
killing chemicals to rise.
Q Can I try the Obi TENS+
before going into labour?
A Yes, place 2 pads attached
to one leadwire on your
forearm to feel the different
pulse sensations following the
instructions on page 6.
Q Can I combine the Obi TENS+
with other medication?
A Yes, you can still use analgesics
such as gas and air (entinox) or
pethidine.
Q Can the Obi TENS+ be used
in hospital?
A Yes. However, a midwife
may ask you to switch it off
temporarily.
Q Can I use the Obi TENS+
if I am considering a water
birth?
A Yes, but not in the water itself.
Troubleshooting Questions
Q Why does the stimulation
not appear to be as strong
after you have used the
Obi TENS+ for a while?
A Increase the intensity, you may
have become used to a lower
setting.
Q Why does the stimulation
feel strong but ineffective?
A You may need to switch off
the unit and reposition the
electrode pads.
Q Why does the stimulation
not feel sufficiently strong
even on a high setting?
A The batteries may need
replacing.
Q What do I do if there is no
stimulation, intermittent
stimulation, or weak
stimulation felt even with
a new battery?
A Check electrode contact.
Check leads. Check batteries.
Call our customer careline on
+44 (0)208 5329 5959.
Using Your Obi TENS+
a)
You are now ready to start
using your Obi TENS+.
Switch the unit on by pressing
the
on/off button. The Obi
TENS+ will always start up in
BURST 1 mode.
b)
Begin by pressing the
CH1+ key. Each time you press
this key, a small ‘half-moon’
shape will appear on the
screen increasing in number
and size as the intensity is
increased. You will begin to feel
a pulsating sensation which will
burst in time with the small
arrow flashing on the screen.
Ensure that you increase the
intensity slowly.
c)
Repeat the previous step with
the
CH2+ key. You will
now feel a sensation in both
sets of pads.
d) BURST 1 (use between
contractions):
This is the
first mode that you will use.
It feels like a bursting, tingling
sensation i.e. the pulses are
off and on periodically. This
mode will help to promote
those all-important natural
pain-killing chemicals known as
‘endorphins’ and ‘encephalins’.
e) BOOST 1 (use during
contractions):
When
experiencing a contraction,
simply press the ‘boost’ button
located on the left side below
the screen. The Obi TENS+ will
then switch automatically into
the BOOST 1 mode for that
extra surge of power required
to combat the pain during
contractions. This will feel like
a continuous sensation.
f)
Once the contraction has
passed, simply press the
‘BOOST’ button. The Obi
TENS+ will return to the
original BURST 1 mode.
Continue this cycle during your
early stages of labour.
Useful Information
1. Continue stimulation for as
long as necessary, unless you
experience discomfort.
2. If you stimulate for a number
of hours ensure the pads do
not become dry. If this occurs,
switch off the unit, disconnect
the electrodes, and apply a
small drop of water to them.
3. The pads can be used several
times. Replace the pads when
they stop sticking to the skin.
Replacement pads are available
from www.babycaretens.com.
4. Always ensure that the unit is
switched off before you remove
all the leads and pads. Do not
pull the wires. ALWAYS remove
the jack plug from its socket
by holding the plug between
the forefinger and thumb and
pulling gently.
5. The Obi TENS+ can also be
used as a standard TENS
unit for relief of numerous
conditions, including after pains
and post operative pains. It is
worth bearing this in mind if
you have a caesarean section.
Please seek medical advice first.
Post-Natal Pad Placement
Diagrams
KEY:
= first pair of electrodes
= second pair of electrodes
N.B. Electrodes supplied with this
unit are all the same colour - the
black and white squares show
suggested electrode placement only.
Using the Between
Contraction Timer (BCT) timer
When in BURST mode, the unit
automatically measures your BCT.
This appears at the bottom of
the display. When you switch to
BOOST, the last BCT will remain at
the bottom of the display. The BCT
will always refresh when re-entering
the BURST mode from the BOOST
mode and will record the next BCT.
N.B. The Obi TENS+ starts up in
BURST Mode. The BCT only appears
after one cycle of pressing the Boost
Button on and off.
Recalling contraction history
To recall a list of your last 5 ‘BCTs’
press the CH1-
and CH2-
buttons simultaneously. The 1st
symbol you will see is a single
moon which is the last BCT.
Use CH2+
to reveal up to 5
BCTs
. Use CH2-
to
review more recent BCTs. Recalling
the contraction history will not
disable functionality of the unit. To
return to the main screen press the
CH1-
and CH2-
buttons
simultaneously.
N.B. To avoid losing contraction
history, do NOT switch unit off.
Remove the battereis if you wish to
reset the contraction history.
The Mode Button
There are two modes available on
the Obi TENS+, each with a BURST
and BOOST function.
Mode 1 (Burst 1 and Boost 1)
,
which has been described above, is
primarily used for the earlier stages
of labour.
Mode 2 (Burst 2 and Boost 2)
can
be used when your labour advances
and your contractions become
more frequent.
Press the Mode
button to
switch between modes. You will
see from the User Display, that
the number next to the BURST or
BOOST will change from 1 to 2 and
vice-versa.
NB. Both modes are interchangeable
and can be used according to your
preference, not necessarily for the
stage of labour you are in. Mode 2
can be operated in the same way
as mode 1.
Obi TENS+ Technical Data
7
10
8
11
9
12
204
2597
Cool grey 3
204
2597
Cool grey 3
Instructions f
or use
1
2
2
1
Bra line
Navel line
Panty line
Lower Back Pain
Shoulder Pain and Frozen Shoulder
Outer and inner aspect of shoulder
Period Pain
Display
TN type LCD
Operation Mode
4 treatment modes:
Burst 1, Burst 2, Boost 1, Boost 2
Pulse (Hz)
Frequency
Pulse Width (µs)
Description
Burst 1
16
150
1 Burst/sec and
8 pulses per burst
Burst 2
32
150
2 Burst/sec and
8 pulses per burst
Boost 1
80
150
Constant
Boost 2
100
150
Constant
- Output Voltage: 0 – 55V zero to peak at 500
Ω
load
- Output Waveform: Symmetrical biphasic rectangular
Automatic Power Off
5 Minutes
Output Channel
Two Channel
Output Voltage
0 – 55V (zero-to-peak) across a 500
Ω
load;
adjustable in 14 steps
Output Intensity
0 – 110 mA (max.) into a 500
Ω
load
Output Waveform
Symmetrical bi-phasic rectangle
Output Jacks
CE Touch-proof jacks
Load Detector
Contact detection between the device and human skin
(This feature is activated from Level 2 and up)
Battery
2 x 1.5V AAA Battery
Battery Low Detect
2.2V ±0.2V
Tolerances
All output parameters are subjected to a ±20% tolerance
unless other specified.
Weight
52g
Size
40 x 125 x 20mm
Guarantee
Your Obi TENS + machine is guaranteed for a period of 1 year against
manufacturer’s defects. Please record purchase details in the space
provided below for your record purposes. The guarantee does not
include leads, electrodes or battery. Applies to purchases only.
Date of purchase:
Invoice number:
This manual is recyclable
Nov 2017 (2)
0120
OBI
TE
NS
+
Distributed by
Body Clock Health Care Ltd
108 George Lane, South Woodford,
London E18 1AD
Tel (+44) (0)20 8532 9595
Fax (+44) (0)20 8532 9551
www.bodyclock.co.uk
e-mail [email protected]
Fuji Dynamics Ltd, Unit C,3/F, Manley Tower,
No828 Cheung Sha Wan Rd, HK
