Devices and systems for docking a heart valve

A system comprising:

• a delivery catheter assembly comprising:
• an elongated nosecone;
• an outer tube having a distal end and one or more radiopaque markers disposed at or near the distal end;
• and
• a docking station connector moveable within the outer tube;
• and
• a connecting tube disposed in the outer tube;
• wherein the connecting tube includes one or more radiopaque markers disposed between the elongated nosecone and the docking station connector;
• and
• a docking station frame disposed in the outer tube and coupled to the docking station connector;
• wherein the docking station frame includes one or more radiopaque markers disposed around a valve seat;
• wherein the docking station frame is deployed by retracting the outer tube proximally from the elongated nosecone;
• and
• wherein the radiopaque markers of the outer tube, the radiopaque markers of the connecting tube, and the radiopaque markers of the docking station frame are configured to visually determine correct placement of the docking station frame and a final point at which the docking station frame is recapturable by the outer tube.