Abstract:
The new VariGrip(tm) III Multi-Device Controller from LTI has expanded the capabilities of
microprocessor-based prosthetic controllers. Traditionally, one or two prosthetic devices were
controlled by two myoelectric input signals. This worked well for some people, but others could
not master it and therefore they needed a different control strategy. The VariGrip solves this
problem by offering a variety of pre-programmed control strategies. It allows prosthetists to set
up systems to control up to four devices for greater versatility. Rather than restricting the user to
myoelectrodes, the VariGrip III accepts inputs from myoelectrodes, Touch Pads, servo
transducers or switches to fully utilize the user’s capabilities. The controller is compatible with
all manufacturer’s single-motor terminal devices which further expands the options available to
the prosthetist.
