Hi Julie, Hovertech International are working on a solution to this currently. They have a product called the Sit-Assist which they are hoping to release sometime this year. It is designed for the exact purpose you describe. I have seen a prototype of this product but it is yet to be released for purchase, I will find out when we can expect to see this. Happy to send you further information in the meantime Julie?
Many thanks.
Fletcher Suckling
National Product Manager 0211662143
fletcher@activehealthcare.co.nz