Patent ID: 7604612

Claim:
An evacuation sheath assembly comprising: a first elongate tubular member having a proximal end, a proximal region, a distal end, a distal region, and an inflation lumen extending between the proximal region and the distal region; a second elongate tubular member mounted on the distal region of tbe first elongate tubular member, the second elongate tubular member having a proximal end with a proximal opening, a distal end with a distal opening, and a lumen extending between the proximal opening and the distal opening, the proximal end having a generally circular edge that defines a first plane, the distal end having a generally circular edge that defines a second plane, the proximal and distal openings arranged so that the first and second planes intersect a central longitudinal axis of the second elongate tubular member, the first plane extending at angle other than 90 degrees; a distal sealing balloon mounted on the second elongate tubular member operable between a compressed condition and an expanded condition, the distal sealing balloon configured to form a seal with a blood vessel, the distal sealing balloon including a proximal cone portion and a distal cone portion, wherein at least one of the proximal and distal cone portions, when in an expanded configuration, forms an angle with respect to the longitudinal axis of the second elongate tubular member; and a proximal sealing balloon operable between a compressed condition and an expanded condition, the proximal sealing balloon mounted on the second elongate tubular member proximal of and spaced apart from the distal sealing balloon and configured to form a seal with a catheter.