Tetra Society of North America

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Tetra operates 45 chapters across Canada and the United States. Contact your local chapter (or head office in Vancouver, BC) to discuss your assistive device needs.

Since Tetra was founded in 1987, its volunteers have completed thousands of assistive devices. Search our database to find examples of projects that might help you.

If a custom Tetra device could transform some aspect of your life then complete our on-line form. It is easy to complete: no medical documentation is required, and devices are free.

Turning dreams into realilty, one gizmo at a time

A young man with balance problems loved cycling but found he kept tipping his trike – until Tetra Halifax volunteer Bill Rudolph fitted it with a fourth wheel, creating the Tetracycle. While he was at it, he also created a lower gear, to keep the client’s speed down, re-spoked damaged wheels, gave the whole bike a new paint job, and a professional logo.

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