Among other things, a delivery catheter assembly for insertion into a patients vasculature is disclosed. In particular embodiments, the assembly includes a catheter, an obturator, and a hub. The hub is configured to maintain the proximal end of the catheter thereon. The hub and the proximal end of the obturator are configured to securely engage each other until a physician desires to release the obturator from the hub. When the catheter and obturator are assembled, the distal ends of the catheter and the obturator are adjacent or substantially aligned. In one form, the distal end of the obturator is made of an echogenic material that is visible with sonography or ultrasound imaging. In another form, a plurality of echogenic markers is positioned along the obturator including the distal end of the obturator. Beneficially, the position of the catheter is determined by locating the obturator using sonography or ultrasound imaging.
