Yes, as these types of deductions fall under the medical section of your itemized deductions Schedule A Worksheet that you would need to enter these expenses on. Unless you have a significant amount in other items that could be entered and considered on your Schedule A Worksheet, then you're better off using the standard deduction amount especially that given the changes in recent years, the SD is much higher than it used to be.
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.