Treatment device (1) with a hypobaric chamber (2) to house the lower half of a person's body, in which - the hypobaric chamber (2) has an inlet opening (3) that can be closed tightly to the gases with respect to the trunk of the person by means of a closing element (4), - the treatment device has a resting surface (5) with a first part (5a) arranged in the hypobaric chamber (2), suitable for the support of the lower half of the body, and a second part (5b) arranged outside the hypobaric chamber (2) in prolongation of the first part (5a), suitable for the support of the upper half of the person's body, - between the first part (5a) and the second part (5b) of the resting surface (5) is arranged an interruption (6) through which the closure element (4) can rest on the trunk of the person, characterized in that - both the first part (5a) and the second part (5b) of the super The resting surface (5) is guided in each case in a longitudinally movable way in the same direction on a linear guide (7), the first part (5a) being able to move at least in part so that it leaves the hypobaric chamber (2) and the second part (5b) being able to move so that it moves away from the inlet opening (3) and - the treatment device (1) has a synchronization between the first part (5a) and the second part (5b) of the resting surface (5) that is designed so that it causes movement in the same direction with the same speed of the first and second parts (5a, 5b) of the resting surface (5).Dispositivo de tratamiento (1) con una cámara hipobárica (2) para alojar la mitad inferior del cuerpo de una persona, en el que - la cámara hipobárica (2) presenta una abertura de entrada (3) que se puede cerrar de manera estanca a los gases con respecto al tronco de la persona mediante un elemento de cierre (4), - el dispositivo de tratamiento presenta una superficie de reposo (5) con una primera parte (5a) dispuesta en la cámara hipobárica (2), adecuada para el apoyo de la mitad inferior del cuerpo, y una
