I have one similar to that and it has come in VERY handy several times. Fortunately for me, between MEDICARE & TRICARE (retired military health coverage) the out of pocket cost was minimal.
The equipment I am working to get now is very helpful but UNfortunately, MEDICARE doesn't consider it "medically necessary" so I'll get no help with the purchase. I'm hopeful this will be close to the last durable medical equipment item I have to purchase. Power wheelchairs (2), a scooter, a Hoyer Lift (
http://www.disabilityequipment.com/tmh_mtch.php), two (so far) modified vans with ramps, hand controls, etc. have consumed much of our disposable income over the years. We both have more enjoyable uses for our money - but none so useful in maintaining our independence.
It sorrows me to think that most of these "gadgets' were not available just 15 or so years ago. They would have helped so many people with mobility issues and greatly improved their quality of life. I know they have done so for us. Thank
God for American ingenuity and industriousness (is that a word?).