Retaining device of the human body in lateral decubitus position, comprising a posterior distribution (2) adapted to rest on the back of a human body (1) in a lateral decubitus position and an anterior distribution (3) adapted for simultaneously supporting the anterior part of a human body in lateral decubitus position, each distribution (2, 3) comprising at least one mechanism adapted to support (20, 30) in the human body (1), retaining said device to the body human (1) by pressure, when the human body is in the position of lateral decubitus between the posterior distribution (2) and the anterior distribution (3) and in contact with the mechanisms adapted to support the human body (20, 30) of the same, device in which at least one of the mechanisms adapted to support (30) in the human body (1) is characterized by: - it is displaceable and adjustable, with continuous advance and retraction between a resting position in which it is not in contact with the human body (1) and a work position designed to support the human body, - exerts an incremental pressure on the area of the human body (1) on which it supports as it continues to advance towards the human body (1) after reaching the working position. (Machine-translation by Google Translate, not legally binding)1. Dispositivo de retención del cuerpo humano en posición de decúbito lateral, que comprende una distribución posterior (2) adaptada para apoyar en la parte posterior de un cuerpo humano (1) en posición de decúbito lateral y una distribución anterior (3) adaptada para apoyar simultáneamente en la parte anterior de un cuerpo humano en posición de decúbito lateral, comprendiendo cada distribución (2, 3) al menos un mecanismo adaptado para apoyar (20, 30) en el cuerpo humano (1), reteniendo dicho dispositivo a el cuerpo humano (1) por presión, al encontrarse el cuerpo humano en la posición de decúbito lateral entre la distribución posterior (2) y la distribución anterior (3) y en contacto con los mecanismos adapt
