The cost of adaptive equipment for a medical condition is a deductible expense. However, you must itemize and your total medical costs must exceed your applicable threshold (10% of adjusted gross income, or 7.5% of adjusted gross income if you or your spouse is at least 65 years old by the end of the year).
For calendar year 2007, taxpayers covered by an HDHP may contribute up to the lesser of the annual deductible or $2,850 ($5,650 for family coverage).