The bed comprises a bracket (10) carried by the base (1) of the bed, the said stem carrying a flexible link that can slide with respect to the bracket, one of the ends of said ligature may be secured to the support (6), whereas the other is capable of being attached to a harness (12a) placed between the patient (12) and the bedding without effort, as soon as the support (6) has been previously placed in the high position, the personnel ensures the raising of the patient (12) by simple descent of the support (6) towards the ground by means of at least one jack.