Abstract: The present invention is directed towards a malleable sleeve used in conjunction with a multi-lumen catheter with an expandable device, such as a balloon, incorporated into its surface. The malleable sleeve allows the catheter to be pre-formed into a shape that corresponds with the shape of the nasal passageway. The present invention also covers endoscopic surgical methods utilizing the malleable sleeve.

Abstract: The improved balloon catheter includes a first tubular segment, which has multiple zones of differing malleability along its length. The catheter further includes a coaxially aligned hypotube formed of a malleable material, which is positioned within the lumen of the first tubular segment and extends from the distal end of the first tubular segment. In one embodiment the hypotube runs the length of the first tubular segment; while in another embodiment, the hypotube runs along only a portion of the length of the first tubular segment. A portion of the outer circumferential surface of the hypotube is permanently affixed and sealed to an inner circumferential surface of the first tubular segment in the vicinity of the distal end of the first tubular segment. The outer circumference of the distal end of the first tubular segment is gently tapered along its length so as to smoothly transition to the circumference of the hypotube.

Abstract: The present invention is directed towards a steerable multi-lumen catheter system with a locking mechanism and a plurality of ports connected to the lumens inside the multi-lumen catheter.

Abstract: A system for making a precise incision and circular hole in a vessel wall, such as the aorta, that eliminates lateral side notches from the aortotomy. In one aspect, the system includes a surgical knife or lancet having a blade surrounded by a retractable shield. In one aspect, the system includes a tissue punch having a rotating circumferential edge for receiving a parabolic-shaped anvil having an anvil cutting edge. The anvil is placed through an incision made by a knife and actuated to produce a hole in the vessel wall.