Ex vivo procedure to control at least one pump in an infusion apparatus to administer a fluid to at least one organ selected from the group comprising livers and kidneys through a plurality of vessels to maintain the viability of said less an organ, characterized in that the method comprises: controlling a pump to deliver a fluid to a first vessel of an organ and a second vessel of an organ； and executing the control functions of a control algorithm unit (3000) provided with a control algorithm, the control algorithm providing cooperative control of a fluid flow to the plurality of vessels: receiving via a sensor interface (3100 ), the sensor input that measures a first parameter of the fluid flowing in the first vessel and a second parameter of the fluid flowing in the second vessel； directly controlling, by means of a controller (3300), the second parameter of the fluid flowing in the second vessel to influence the first parameter of the fluid flowing in the first vessel, comparing, by means of a determination unit (3200), the first parameter measured with a predetermined interval for the first parameter measured to determine if the first parameter measured is outside the predetermined range, causing the unit of determination that the controller controls the second parameter of the fluid flowing in the second vessel cooperatively to return the first parameter within the predetermined range, in which the control algorithm unit (3000) includes: the sensor interface (3100), the controller (3300), the determination unit (3200)； one or more storage units (3400)； a data interface (3500), and a user interface (3600), all connected via a data / control bus (3700).Procedimiento ex vivo para controlar por lo menos una bomba en un aparato de perfusión para administrar un fluido a por lo menos un órgano seleccionado de entre el grupo que comprende hígados y riñones a través de una pluralidad de vasos para mantener la viabilidad de dicho por lo menos un órgano, caracterizado p
