An aspect of some embodiments of the application relates to a microcatheter (318) comprising a deployment element (310) disposed about around at least a portion of an exterior of a distal end of the microcatheter the deployment element configured for repeatedly expanding and collapsing the distal end arranged to allow forward or reverse axial displacement while the deployment element maintains a position the deployment element arranged for positioning the microcatheter distal end approximately in the middle of a vessel.
