About Tetra Tetra Projects Request Assistance Tetra in your community. Support Tetra Photo Home | Site Map | Contact
Caroline with her bocce ball chute. Home Page - Tetra Society
About Tetra


Donate to Tetra

Volunteer with Tetra



Device Search
Device Search
Watch our video


Thank you for stepping up and completing such a worthwhile project.

“It is wonderful to know there is such a fabulous community support! The family is thrilled with the results and the difference it will make in their lives.”

Dino Tsembelis, resource development worker with Nanaimo Child Development Centre thanking local Tetra volunteers who devised a safe stair railing for a young girl with a degenerative neurological condition








Tetra Society volunteers work with health professionals, who are invited to participate at all steps of the process.

The Tetra Society of North America has worked with all types of health professionals over the years. The list includes occupational, physical and recreational therapists, music therapists, vocational rehabilitation consultants, social workers and physicians.

Tetra recruits skilled volunteers to create assistive devices and adaptations for people with specific needs that cannot be met by commercial items. Everything created through Tetra is unique, custom-made for one person’s particular needs. The work is done by volunteers usually within the client’s own community.

The organization offers a seamless service and our skilled, screened volunteers – engineers and technicians – ensure that the client’s needs are met in the most professional, safest way.

Tetra volunteers work with health professionals, who are invited to participate at all steps of the process. They are present at client meetings, if necessary, throughout the planning and designing stages and are part of the final signing-off once the project is completed. Tetra engineers do not judge, assess or advocate for clients. They perform one function: to devise and create a suitable device (or modification to an existing item) that can enable someone to overcome a particular barrier.

This is done with the minimum of paperwork. For example, Tetra does not require clients to provide written medical information – although all projects should be instigated by completing the online Request For Assistance form (the same form that is used by clients if they are applying on their own). There is a print version of this, as we find many health professionals like to keep documentation for their own records.

Volunteers are directed not to clone or copy existing commercial devices. Tetra exists to fill needs when off-the-shelf solutions are not available.

Tetra’s services are offered at no charge – no upfront fees, call-out charges, hourly rates or membership dues. However, clients are asked, whenever possible, to contribute to their volunteer’s materials and mileage expenses. This is something that will be discussed before any costs are incurred.