An injection system configured to inject objects, such as eggs, with a fluid, wherein said objects each comprise at least two parts in the object, such as embryonic tissue, embryonic or allantoic fluid, and an air bag, wherein at least a part of the object must be injected, the system comprising: - a supply configured to provide objects； - needles connected at least with an actuator configured for the selective movement of the objects and the needles with respect to each other, - control device configured to inject needles into the objects at a determined injection depth for the injection of the objects, whose depth is set to correspond to the at least part of the object to be injected, and to introduce the injection needles at the determined depth into the objects and inject fluid into the objects at the determined injection depth； - at least one sensor configured to control the pressure or flow rate of the fluid at least during injection, and to generate a control signal that is sent to the control device； and - wherein the control device is further configured to detect a defect in or of the system of a group of system defects comprising: air bubbles in the fluid； blocked fluid lines； and blocked needles, based on the control signal representing the controlled pressure or flowUn sistema de inyección configurado para inyectar objetos, tales como huevos, con un fluido, en donde dichos objetos comprenden cada uno al menos dos partes en el objeto, tales como tejido embrionario, fluido embrionario o alantoideo y una bolsa de aire, en las que al menos una parte del objeto debe ser inyectada, comprendiendo el sistema: - un suministro configurado para proporcionar objetos； - agujas conectadas al menos con un actuador configurado para el movimiento selectivo de los objetos y de las agujas entre sí, - dispositivo de control configurado para inyectar agujas en los objetos a una profundidad de inyección determinada para la inyección de los objetos, cuya profundidad es estable
