DUODYNATOR
®
1049
13
gbo
Medizintechnik
AG 2008
Version 1.3
3 Description of function
3.1 Principle of operation
The current stimulation device is seperated into two halfs. The left side is assigned to the left patient output
connector (channels I and II), the right side to the right one (channels III and IV). Both sides operate
independently and have the same functionality. The device recognizes the number of available channels
automatically due to the connected distribution cables and then only shows these ones. If there is no patient
cable inserted, the assigned display half will remain blank.
3.1.1 Operating modes
Each side can be operated in ICT- (interference currents) or MFmod (single circuit currents) mode. In
MFmod mode, each display half is divided again into two seperate channels which can be used
independently from each other. The operating mode can be switched over by the
ICT key
and the
MFmod
key
. In interference operation, a stimulation shifting between the two interfering channels is possible – see
chapter 3.3.2 Balance regulator.
3.1.2 Surge
The intensity for all channels can be surged. A surge cycle consists of rise time, hold time, and pause time.
Surging is usefull in muscle-stimulating applications when well definend pause times are desired. It is also
possible to synchronize two surged MFmod channels – see chapter 3.4.2 Surge and dynamics parameter.
3.1.3 Dynamic
The device also offers a feature called “dynamic” to the user. When dynamic is activated, the therapy
intensity is slowly modulated within a range of +/- 10%. This makes the current effect very good perceptible
to the patient. Dynamic is possible in ICT and MFmod mode – see chapter 3.4.2 Surge and dynamics
parameter.
3.1.4 Current programs
The user can easily change the current program of each channel. Current programs are divided into:
•
Predefined programs (such as Lipolysis). The name of the program is shown on the display. These
programs combine different stimulation frequency ranges to a reasonable therapy program. Surge
parameters and dynamic are set automatically, you do not have to change any further parameters and
may start treatment immediately. Selecting these kind of programs is done by pressing the
Softkey
[Menu] at the respective channel. A list of programs will pop up. Use the
modification knob
to move
the highlight. Press the
OK key
to select the program. See Figure 4.
•
Single step programs (like 90-110 Hz). These allow the therapist to directly choose a stimulation
frequency range. With this programs, it is also possible to control surge- and dynamic-parameter during
the therapy. Press the
Softkey
[Menu], step to “Single step”, press the
OK key
and select the desired
program. Pressing the
OK key
once again will load the program. The program name will be displayed.
•
User-defined programs. To allow the greatest flexibility to the therapist, you may create your own
programs. The current stimulation device allows you to create up to 30 user-defined programs,
numbered from P1 to P30. The user can easily control and modify all therapy parameters. User-defined
programs can be selected (and edited) using the menu. To load a program, move the cursor to “Load
program”, press the
OK key
, choose the desired program and once again press the
OK key
. See chapter
5.3 Editing of user defined program for information about how to edit user-defined programs.
When the device is switched on, the last used therapy programs are loaded. It is possible to start treatment
imediately at the point you stopped the last time you used the device: the device always remembers the state
