Yes, these are deductible medical expenses, as long as they were not reimbursed by insurance. Unfortunately, it may be difficult to actually get a tax benefit, since your medical expenses are only deductible if they are more than 7.5% of your income, AND your total itemized deductions are more that your standard deduction.
The best way to determine this is to add all your itemized deductions in Turbotax, even if you don't usually list your charity donations or taxes paid. List everything, including all your out of pocket medical expenses in addition to the chair and lift. If you can pull together enough itemized deductions to make a difference, Turbotax will claim the deduction for you.
