Patent ID: 7597339

Claim:
A wheelchair, comprising: a seat portion; a a backrest portion provided with backrest columns mounted approximately perpendicular to the seat portion and a main body detachably mounted to the backrest columns transversely of the backrest columns, said main body being made of an X-ray transmissive material; holding portions detachably installed consecutively to the backrest columns, said holding portions being turnable so as to permit positioning of said holding portions generally on a same plane as the backrest portion while remaining installed to the backrest columns; wheels, the backrest columns being arranged approximately perpendicular to a ground plane of the wheels; front lower columns connected to respective ones of the wheels, approximately perpendicular to the ground plane of the wheels; and rear lower columns connected to remaining respective ones of the wheels, approximately perpendicular to the ground plane of the wheels, the backrest columns being installed consecutively and linearly to the rear lower columns.