A vascular filter assembly, comprising: a. a catheter body having a self-expanding filter member coupled thereto; b. a sheath disposed directly over the self-expanding filter member such that the self-expanding filter member is at least partially constrained from expansion in a first configuration within an interior space defined between an inner wall surface of the sheath and an outer wall surface of the catheter body concentric to the inner wall surface of the sheath, wherein the sheath includes at least one aperture disposed through a wall thereof, and wherein the sheath slides longitudinally relative to the catheter body from the first configuration to a second configuration to release the self-expanding filter member from being constrained within the sheath, wherein the sheath includes a proximally decreasing diametric taper disposed in both the interior and the outer diameter of the sheath sidewall proximal to the self-expanding filter member in the first configuration, and the sidewall of the sheath proximal to the taper is thinner than the wall of the sheath distal to the taper, such that the interior space accommodating the self-expanding filter member in the first configuration has a larger cross-sectional area than the interior space proximal to the self-expanding filter member in the first configuration, and the larger cross-sectional area is provided by an increased internal diameter of the sheath proximate to the self-expanding filter member in the first configuration compared to the internal diameter of the sheath proximate to the self-expanding filter member in the first configuration; and c. a distal hub member fixedly attached to a proximal end of the sheath such that an infusion port disposed on the distal hub provides fluid communication between an exterior of the distal hub and the interior space defined between the sheath and the catheter body in the first configuration. a. a catheter body having a self-expanding filter member coupled thereto; b. a sheath disposed directly over the self-expanding filter member such that the self-expanding filter member is at least partially constrained from expansion in a first configuration within an interior space defined between an inner wall surface of the sheath and an outer wall surface of the catheter body concentric to the inner wall surface of the sheath, wherein the sheath includes at least one aperture disposed through a wall thereof, and wherein the sheath slides longitudinally relative to the catheter body from the first configuration to a second configuration to release the self-expanding filter member from being constrained within the sheath, wherein the sheath includes a proximally decreasing diametric taper disposed in both the interior and the outer diameter of the sheath sidewall proximal to the self-expanding filter member in the first configuration, and the sidewall of the sheath proximal to the taper is thinner than the wall of the sheath distal to the taper, such that the interior space accommodating the self-expanding filter member in the first configuration has a larger cross-sectional area than the interior space proximal to the self-expanding filter member in the first configuration, and the larger cross-sectional area is provided by an increased internal diameter of the sheath proximate to the self-expanding filter member in the first configuration compared to the internal diameter of the sheath proximate to the self-expanding filter member in the first configuration; and c. a distal hub member fixedly attached to a proximal end of the sheath such that an infusion port disposed on the distal hub provides fluid communication between an exterior of the distal hub and the interior space defined between the sheath and the catheter body in the first configuration.