A method (400) for priming an infusion system, comprising: providing a system having an infusion chamber (340) provided with an infusion liquid (466), the infusion chamber being connected to a conduit (478) of infusion having a first valve (482), the system having a transverse duct (484) that cuts the infusion duct at a location between the infusion chamber and the first valve, the transverse duct being coupled to a suction chamber (344 ), the transverse duct having a second valve (488), the suction chamber being coupled to a vacuum source； filling the infusion conduit (478) with a first volume of the infusion liquid, the infusion conduit having an infusion port exposed to a non-liquid environment having a first pressure, wherein the non-liquid substance is any gas or gaseous mixture ； close the first and second valves to isolate the infusion chamber； operate the vacuum source to create a second pressure in the suction chamber that is lower than the first pressure； open the first valve and the second valve to get a second volume of the infusion liquid in the infusion line that flows over the first valve into the infusion chamber, where the opening of the first valve and the second valve to get that producing the second volume of the infusion liquid in the infusion line flows over the first valve comprises: opening the second valve to create the second pressure in the infusion chamber； close the second valve to isolate the infusion chamber at the second pressure； and after opening and closing the second valve, open the first valve to allow the second volume of the infusion liquid to flow over the first valve； wherein the second volume of the infusion liquid is less than or equal to the first volume of the infusion liquid.Un método (400) para cebar un sistema de infusión, que comprende: proporcionar un sistema que tiene una cámara (340) de infusión provista de un líquido (466) de infusión, estando la cámara de infusión conectada a un conducto (478) de infusión que tie
