A packaging structure for containers (3, 3 ') for pharmaceutical use, pretreated, sterile and ready to be used, comprising a tray (1), a plane (2) for supporting the containers and an element (5) of closing, said tray (1) having an open side for introducing and removing a support plane (2) from the containers (3, 3 '), and said element (5) closing the open side of the tray (1), having said support plane (2) a predetermined spatial distribution of seats (6) in which said containers (3, 3 ') can be accurately positioned without mutual contact, characterized in that it comprises means (7, 8) for diversifying the configuration application between said support plane (2) and said tray (1) to keep unchanged the points inside the tray (1) in which one end (3a, 3a ') of the containers (3, 3') is placed , with the variation of the height of the containers (3, 3 ') of the associated set of containers from once to another a to the support plane (2), and because said support plane (2) of the containers (3, 3 ') is positioned parallel to the resting plane (4) of the tray (1), said containers (3, 3 ') can be positioned in said seats (6) with their longitudinal axis (L, L') orthogonal to the resting plane (4) of the tray (1), and because said diversification means modify the application position of said plane (2) supporting said tray (1) along the direction (Z) orthogonal to said resting plane (4) of said tray (2).Una estructura de empaquetado para recipientes (3, 3') de uso farmacéutico, pretratada, estéril y lista para ser utilizada, que comprende una bandeja (1), un plano (2) de soporte de los recipientes y un elemento (5) de cierre, teniendo dicha bandeja (1) un lado abierto para introducir y extraer un plano (2) de soporte de los recipientes (3, 3'), y cerrando dicho elemento (5) el lado abierto de la bandeja (1), teniendo dicho plano (2) de soporte una distribución espacial prefijada de asientos (6) en la que dichos recipientes (3, 3') pueden estar posicionados con precisión
