SUBINTIMAL RE-ENTRY DEVICE

摘要

A subintimal recanalization catheter, including an elongate shaft including a first tubular member and a penetration member slidably disposed in a lumen of the first tubular member. The penetration member includes a distal tip positioned proximal of a distal nose of the first tubular member. The distal nose of the first tubular member includes a ramp and a guide wire lumen extending through the distal nose of the first tubular member. Longitudinal movement of the penetration member relative to the first tubular member causes the penetration member to contact the ramp to direct the distal tip of the penetration member away from the first tubular member.

主权项

1. A subintimal recanalization catheter, comprising:
an elongate shaft including a first tubular member and a penetration member slidably disposed in a lumen of the first tubular member, wherein the penetration member is configured to puncture an intima layer of a blood vessel; the first tubular member including a side-facing opening disposed proximal of a distal nose and a guide wire lumen extending through the distal nose of the first tubular member; the penetration member including a distal tip positioned within the opening proximal of the distal nose of the first tubular member; and an actuatable sleeve surrounding the opening and the distal tip of penetration member, the actuatable sleeve being actuatable between a first position in which the sleeve covers the distal tip of the penetration member and a second position in which the distal tip of the penetration member is exposed from the sleeve; wherein the distal tip of the penetration member is permitted to deflect away from the first tubular member when the sleeve is in the second position.