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Single Site Alternating:
Single Site Alternating is an initial signal sent which from powering on the hand is
interpreted as a close action and the hand therefore starts to close. When this signal
is released, the Direction Change Time (a timer customisable by the user) starts and
whether the next signal crosses the On threshold before or after the timer determines
whether it will be interpreted as an open or close action. If the second signal crosses
the On threshold before the timer it will continue the direction of the hand and so is
interpreted as a close signal. If the second signal crosses the On threshold after the timer it will change the
direction of the hand and so is interpreted as an open signal. The Direction Change Time only starts once the
signal has been released. Therefore, to change grips the user must send a signal after the Direction Change
Time to change the direction of the hand from closing to opening, maintain that signal until the hand is fully
open and either keep it maintained to activate a Long Hold Open grip switch trigger, or release the signal and
reapply another signal before the Direction Change Time, so it is interpreted as another open signal to activate
the Open/Open grip switch trigger.
11.0 COVVI Go App
Swipe left to choose the Operating Modes. Whichever option has the orange border is the option you are
selecting. The COVVI Hand can be controlled using three different operating modes. The modes available will
depend on your selection in the Interface Sensor screen.
If your patient has single site control, a strategy is required to open and close the hand. There are two available
methods.
Fast Open/Slow Close:
Fast Open/Slow Close is a signal sent and whether that signal crosses the On threshold
before or after the Fast Open/Slow Close Time (a time parameter customisable by the
user) determines if it is interpreted as an open or close action. A signal sent before
the time parameter is considered a ‘fast signal’ and interpreted as an open action. A
signal sent after the time parameter is considered a ‘slow signal’ and interpreted as
a close action. Once the On threshold is exceeded, the direction is locked and the
speed is proportional to the magnitude of the input signal, which works the same as with dual site control.
11.8 Operating Modes
Summary of Contents for HAND
Page 2: ...Anything Is Possible...
