An oxygen supply system comprises a reel (1) with a horizontal rotation axis. The reel comprising an integral (internal) oxygen duct. An inlet tube (4) is connected with one end to said integral oxygen duct of the reel. With another end the inlet tube is connected to a stationary oxygen source (3). A flexible supply tube (2) is wound on the reel for supplying oxygen to a patient. One end of the supply tube is connected to said integral oxygen duct of the reel and the other end of said tube can be set in fluid communication with a patient intake element. The oxygen supply system furthermore has a tube guiding means (13) with a guiding passage which is in line with the tangent of the reel at the location where the supply tube is wound off or on the reel. A pole (5), in use taken by a patient during movement through a room, includes an aligning device (7) having a swivelling portion (8) with an inlet connection for connecting the supply tube. The swivelling portion is freely rotatable over 360° with respect to a substantially vertical rotation axis, such that the inlet connection can be directed in any radial direction with respect to the pole. The inlet connection in use is located on substantially the same height as the guiding passage of the guiding means of the reel. The aligning device has an internal oxygen duct (94) extending between the inlet connection and an outlet connection for connecting a drop tube (10) provided with the patient intake element.L'invention concerne un système d'alimentation en oxygène qui comporte une bobine (1) ayant un axe de rotation horizontal. La bobine comporte un conduit d'oxygène intégral (interne). Un tube d'entrée (4) est relié à une extrémité dudit conduit d'oxygène intégral de la bobine. Par une autre extrémité, le tube d'entrée est relié à une source d'oxygène fixe (3). Un tube d'alimentation souple (2) est enroulé sur la bobine pour fournir de l'oxygène à un patient. Une extrémité du tube d'alimentation est reliée audit condu
