The MARCH III is the third exoskeleton in the MARCH series. This suit is design in the year 2017-2018 for the pilot Sjaan Quirijns. The design of the MARCH III is mainly focused on daily usability and user-friendliness. Therefore, different innovations have been made to this suit, such as: an active ankle, the first basis for the balansmechanisme, variable step size and an extra support point to be used for pilots with higher paraplegia.

 

 

 
 
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Ankle

The MARCH III is equipped with newly designed ankle joints. The ankle joint provides more degrees of freedom which enables the implementation of more advanced gaits. The ankle introduces more stability during various gaits like the stairs, the ramp and rough terrain. The control of the ankle joints is closely adapted to the movement of the joints in the hip and knees resulting in a more natural walking pattern.


 
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Backpack

The backpack contains the brain of the exoskeleton. The software is designed to simulate a human walking pattern. This includes a natural walking gait and the ability to make steps of varying sizes, making the MARCH III more suited for everyday use.


 
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Variable stepsize

The MARCH III's step size can be changed by using a rocker switch on the input device integrated in the handle of the crutch. Using the rocker switch, joystick and a screen, the pilot can easily switch between different movements. 


 
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Easier transfer

Multiple fixtures are strapped to the user to ensure safety and comfort when moving with the exoskeleton. The Lower Leg Fixtures are detachable, which makes it easier for the user to step in and out of the exoskeleton.


 

 
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3D-printed risers

The risers of the MARCH III are strapped to the waist of the user providing more core stability. This enables paraplegics with a higher spinal cord injury to use the exoskeleton. Furthermore, extra support points are added to provide upward support to the user, thus contributing to a more comfortable experience.


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