Texas Assistive Devices: Special Purpose Terminal Devices
This kitchen whisk is just one example from the broad array of adapted tools available from Texas Assistive Devices. |
This was the first chance I had to see the multitude of attachments for upper limb prostheses being offered by a relatively new company, Texas Assistive Devices. Following the legacy of such successful amputee-entrepreneurs as D.W. Dorrance [inventor of the world famous split hooks] and Bob Radocy [whose TRS company offers a broad range of active and passive specialty terminal devices], the folks at TAD offer an incredibly broad range of special purpose terminal devices and associated hardware.
Much of their extensive product line consists of modified mechanics and carpentry tools that can be quickly interchanged. In view of the large number of traumatic upper limb amputations in this hemisphere that result from work-related injuries, this fills a definite need. TAD also has a broad line of cutlery, kitchen tools, and gardening implements available.
The optional "N Abler" allows various attachments to be quickly interchanged and provides passive pronation-supination when used with a constant friction prosthetic wrist unit. |
The primary advantage of the "interchangeable tools" approach is that the grasp is much more secure than attempting to grip the tool in one of the ubiquitous voluntary opening hook terminal devices. [In fairness, however, it should be noted that it is often quite easy to grip tools securely with voluntary closing TDs or electronic hands and grippers.] The primary disadvantage of this approach is the need to purchase multiple "adapted TDs" for each task. But, many people need only a half dozen or a dozen "special tools" to accomplish all their work and hobby tasks.
Their modified tableware [knife, fork, spoon] may be of special interest to people with bilateral upper limb loss, or to anyone with upper limb impairments. They have developed a slick flexion-supination wrist attachment that allows precise pre-positioning of any of their attachments. One unique characteristic of their "N Abler" products is that the amount of wrist flexion can be adjusted via a knurled ring, from zero to sixty degrees, and the attachment will remain fixed in that attitude.
The "N Abler" can also be incorporated into a prefabricated or custom WHFO, allowing people with various hand deficits to use the entire range of TAD adapted tools. |
This device can also be attached to a custom-made or prefabricate WHFO, for people with partial hand amputations, or various paralytic disorders. This means that the full range of TAD attachments is available to a broad range of patients with upper limb deficiencies or disabilities.
Finally, they have a growing line of modified sporting equipment that includes golf clubs, fishing rods, and the like. They can be reached via email at: hps@tgn.net. They also have a fledgling web site at www.txad.com but it was not easily accessible the last time I checked.