A mold syringe including a cylinder core (2) for forming the inner circumference of a syringe having a throat communication (G) for mixing of two medical agents, characterized in that the cylinder core (2) it comprises a container space of the mounting device (2F) extending axially, an outlet coolant flow (2G) and a return coolant flow (2H) which are divided by the outer circumference of the space of the container device mounting (2F) and communicate on the tip portion of the cylinder core (2), and one or more notches (2J, 2J, 2J) which communicate with the space of the container mounting device (2F) and have holes in the circumference of the cylinder core (2), the one or more slide cores (5, 5, 5, 7, 7) are respectively inserted into one or more notches (2J, 2J, 2J) permitting sliding in the address radial n cylinder core (2) to form the throat communication (G), the container space of the mounting device (2F) contains a slide core which actuates the mounting device (4) which is in engagement with the slide cores (5, 5, 5 7, 7), and the slide cores (5, 5, 5, 7, 7) are brought into the position in which the slide cores (5, 5, 5, 7, 7) projecting from the circumference of the cylinder core (2) and the position in which the slide cores (5, 5, 5, 7, 7) are immersed in the circumference of the cylinder core (2) moving the slide core which actuates the mounting device (4) forward and backward in the axial direction of the cylinder core (2).Un molde para jeringas que incluye un cilindro del núcleo (2) para la formación de la circunferencia interior de una jeringa que tiene una garganta de comunicación (G) para el mezclado de dos agentes médicos, caracterizado por que el cilindro del núcleo (2) comprende un espacio del recipiente del dispositivo de montaje (2F) que se extiende axialmente, una salida de circulación del refrigerante (2G) y un retorno de circulación del refrigerante (2H) los cuales están divididos por la circunferencia exterior del espacio del recipiente del
