A considered decision to ensure capitalisation of the investment > Monolitic steel base. Highly resistant covers of ABS+PMMA. 360° rotation movement on basis. Progressive effect brake of rotation, by means of foot lever. Foot control to recall memorised positions and to independently activate electric motors for: - uplift; - backrest inclination - longitudinal inclination (trendelenbourg) Pre-operating position: minimum height of seat (490 mm.), easily allows approaching of the patient to the chair. Vertical motion of chair holder, max. height of seat 900 mm. Longitudinal inclination 32°. Backrest inclination until “bed” position. Coaxial armrests with variable height compared to the seat, synchronized with backrest inclination. Horizontally wide apart leg-holders (about 30°+30°), with height and extension regulation. Foot control (optional wireless version).