A sheath catheter used to compress and/or retrieve a filter from a body
lumen. The sheath catheter includes an elongate proximal shaft and a
distal recovery sheath. The proximal shaft includes a central lumen that
accommodates a shaft portion of a solid core wire to provide the catheter
with better pushability. The solid core wire further includes a coiled
portion that extends within the recovery sheath from a distal end of the
proximal shaft. The coiled portion of the core wire provides a transition
in flexibility from the stiffer proximal shaft to the more flexible
recovery sheath. The recovery sheath further includes a sheath lumen that
is sized to receive the filter therein.