Elongated manual unit (10) for deploying an elongated implant (14) from the distal end of a delivery catheter (12), catheter having a body between the distal end carrying the implant and a proximal end to which the unit can be attached manual, the body comprising a push element (16) to maintain the position of the implant during deployment and a traction element (26) to pull it proximally in relation to the push element, a sufficient release distance to unfold the implant, the manual unit having a distal end and a proximal end separated by a length of manual unit, and comprising a pulling component (30) and a pushing component (58), the pulling component having a pulling grip, to grasp and pull proximally the release distance, sliding over the push component, to thereby pull the pull member proximally, to deploy Thus the implant, the thrust component having to be operatively connected to the thrust element of the catheter body and having at its proximal end a thrust surface to receive during deployment of the implant a force that pushes on the thrust element body to resist proximal movement of the implant during deployment, the thrust component providing a guide rail (54) defining a guide path for the pull grip, with a guide path length along which the grip of The traction can slide proximally, from a distal end to a proximal end of the guide rail, whereby the proximal movement of the traction grip along the guide path unfolds the implant, the manual unit being characterized by a guide that can be moved from a compact arrangement, in which the pushing surface is at a first distance from e the distal end of the manual unit, up to an extended arrangement, in which the pushing surface is at a second distance, greater than the first distance, from the distal end of the manual unit, making the guide path extender to an increased guide path length is available for traction grip.Unidad (10) manual alargada para desplegar un implante (14) alargado desde el extremo distal de