Mechanical design for prototyping -- 3

wheelchair that can transform to comfortable bed
when in that mode it should contain a mechanism for sheft up the patient to make it to outer bed
when its in wheelchair modei in should claiming the the stairs

little inspiration : https://www.youtube.com/watch?v=ik286spRM1w&feature=youtu.be&ab_channel=shoo4639

please out of budget do not contact