Vascular delivery methods

A vascular method comprising:

• introducing a first flexible wire into a blood vessel, wherein the blood vessel has a proximal vessel end and a distal vessel end and the first flexible wire has a first proximal wire end and a first distal wire end;
• sliding a housing along the first flexible wire in a direction away from the first proximal wire end and toward the first distal wire end;
• wherein the housing is beveled such that a distal face of the housing has a smaller surface area than a proximal face of the housing;
• frictionally engaging the first flexible wire with the housing;
• and
• pulling the first flexible wire through the blood vessel in the direction of the distal vessel end, wherein the pulling of the first flexible wire pulls the housing through the blood vessel in the direction of the distal vessel end;
• wherein:
• the housing ha an inner cavity and an inner cavity surface;
• the method further includes introducing a second flexible wire to the inner cavity of the housing;
• wherein
• the second flexible wire has a second proximal wire end a second distal wire end;
• and
• introducing the second flexible wire to the inner cavity of the housing includes passing the second distal wire end into the blood vessel through an opening nearer to the proximal vessel end than the distal vessel end such that at least portion of the second distal wire end is positioned within the inner cavity of the housing;
• wherein frictionally engaging of the first flexible wire with the housing comprises causing at least a portion of the second flexible wire to expand within the inner cavity of the housing;
• wherein:
• the portion of the second flexible wire contacts the first flexible wire and the inner cavity surface of the housing;
• and
• a distal movement of the first flexible wire in relation to the housing is restricted.