The invention relates to a patient transport system (1) for overcoming differences in level, in particular, a swimming pool lifter, which comprises a portable track (4), supported on a base (10) in the direction of gravity and provided with rail bodies (20), on which a transport device (2) with a patient carrier (26) can move for upward and downward transport. The aim of said invention is to make portable patient transport systems more user-friendly. Said aim is achieved, whereby the transport device (2) can move on at least three rail bodies (20) of the track (4) and said track (4) has at least two sections (6-9) with a different angle of inclination (11, 12), at least one distance (D) in the direction of gravity (G) between two rail bodies (20) being different in at least two sections (6-9) of the track (4).
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