A stent delivery device is disclosed which comprises a multi-lumen catheter containing a catheter tube for guidewire passage and a core member passage； and a core member residing inside the core member passage connected to a handle on a proximal end and an anchor member on a distal end. The anchor member is releasably connected to the stent for inserting or retracting the stent. Pushing or pulling the core member causes the anchor member to move while the catheter remains in a fixed position.
