An intravascular cuff for receiving a prosthetic valve in situ is disclosed. The cuff comprises a two-ply braided tubular structure defining a lumen and having an extended configuration and a deployed configuration. When said two-ply braided tubular structure is released from a delivery catheter, ends of said two-ply braided tubular structure expand to create gaps between the two plies while said lumen remains well-defined and centered within said intravascular cuff, whereby said gaps in said ends create funneled ends in said lumen for guiding a delivery device for a prosthetic valve into said lumen.
