HiToP
®
184
gbo Medizintechnik AG
Version 2.0
21
Abrupt resistance modifications
in the electrode application can cause problems:
1. Two electrodes touch each other and form a shunt when adjusted upward. If the patient moves during the
therapy, that shunt can open and the patient becomes exposed to an unintended high intensity of current.
2. The electrodes are shorted-out by a conductive foreign substance. This could be a metallic spectacle
frame in case of tinnitus treatment . If during the treatment that shunt is removed (e.g. by taking off the
glasses) this abrupt resistance modification also leads to a severe modification of the intensity of current.
3. It is especially in case of frequently used adhesive electrodes that a weak and therefore highly resistive
bonding is caused. If the desired intensity of current is adjusted in this condition and the electrode is
pressed closer during the treatment, e.g. if the patient turns round and lies on the electrode, this can also
lead to a severe increase of the intensity of current.
4. Please observe by all means the notice on the electrode position.
(see chapter 6 Electrodes)
.
2.5.1 Intensity monitoring active
We at gbo Medizintechnik AG have expanded the device software by a special intensity monitoring routine
in order to get these application problems under control. This safety switching avoids an unintended high
modification of the intensity of current and switches off the respective channel in such a case. On the display
a note for the respective channel is shown (in that example: channel 1):
Menü
FIX
12:22
13:25
24:12
30:22
SimulFAM
i
100 Hz
1,5 - 10 Hz
3 Hz
0 V
12,5 V
33 V
14,5 V
125,6 mWh
Ind.
Menu
Detail
Display
Detail
Display
Detail
Display
I
II
III
IV
Please check that the
electrodes of channel 1
have good contact.
Overview
Figure 4:
Intensity monitoring warning
In that case the therapist can correct the electrode position and start the therapy again.
