Gate Trainer

The Matrix Gate Trainer is designed as a modular system to accommodate a range of user physiologies. The platform relies on the unique extruded aluminum frame. Components and assembly are attached via the universal channel, this enables the customer's intellectual property to be used elegantly in the patient's therapy environment.


Therapy patients with partial spinal cord injuries traditionally require support from multiple caregivers while in therapy sessions. Often a single patient will need at least two therapists assisting their motions as they train their walking 'gate'. One of the two therapist would need to be on their knees, manually assisting the patient's leg movements.

Among other problems to be solved, the customer came to us to develop the best design solution for their innovation which would utilize a system of cords to eliminate the need for this second, kneeling therapist. An attractive, lightweight, adjustable, and durable design solution was achieved by selecting an appropriate material and manufacturing process.


Design Management

Concept Development

Understanding the customer's business objectives and confirming their existing prototype and user scenarios lead to an efficiently iterative concept sketching phase.

design culture

User Centered Strategy

Reviewing and refining the specifications from resulting observations & discussion, we define the scale, range and functionality of the concept featureset.

how to launch a product

Structural Design & Assembly

In CAD we define the finite assembly strategy, material selections, and refine the range of adjustability and user scenarios.


Sketching designs, design sketching
user centered design
design for materials
design prototype

While the product development process can be customized to apply effectively to the needs of the customer and adapt to changing business objectives, Principal Design's 5 step process is a framework that guides the design team and encourages communication and stable execution.

design process


Principal Design approaches every project methodically. The success of a product development project depends upon the clarity and strength of the process. Organized into the five stages most proven to leverage our design efforts, Principal Design's purpose-driven frameworks were developed and refined to reduce risk while balancing exploration with execution. Our creative strategy is divergent to leverage resources and discovery, and convergent to select for the best opportunities.

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