An injection device is described which comprises Parts whose relative movement makes the active substance is injected.For this purpose, a receptacle (103, 203), which can assemble and insert a capsule / syringe, which is held in a housing (101, 201), the Receptacle (103, 203) can be moved by means of a Carriage (108, 208) and a piston (104, 204) that applies A Force to the piston (111a, 111B, 211) Capsule / syringe which can move retained in the Receptacle (103, 203).Provides a Traction cable (114 214) that deflects by a roller (109 209) mounted in the car (108, 208) to make the journey of you tour Route of injection and retraction.One end of the Traction cable (114 214) is connected to the Receptacle (103, 204) while the other end thereof is connected with a tension Spring (110, 210) that is retained in the housing (101, 201).The mechanisms which can be operated automatically and / or manually between the housing (101, 201), the Receptacle (103, 203), plunger (104, 204) and cart (108, 208) control the mutual coupling of the Traction cable (114 214) and the sequence of Tour), r Trip injectionRetraction and tour with at least some means which allow the user to adjust the profile of Achievement of at least one of the tours.Se describe un dispositivo para inyección que comprende partes, cuyo movimiento relativo hace que la sustancia activa se inyecte. Para este propósito, un receptáculo (103, 203), dentro del cual se puede montar e insertar una cápsula/jeringa, que se retiene en una carcasa (101, 201), el receptáculo (103, 203) se puede mover por medio de un carro (108, 208) y un émbolo (104, 204) que aplica una fuerza a los pistones (111A, 111B, 211) de la cápsula/jeringa que se puede mover retenida en el receptáculo (103, 203). Se proporciona un cable de tracción (114, 214) que se deflecta por medio de un rodillo (109, 209) montado en el carro (108, 208) para realizar el recorrido de pinchado, recorrido de inyección y recorrido de retracción. Un extremo del cable