ENDOSCOPIC VESSEL HARVESTER WITH BLUNT AND ACTIVE DISSECTION

摘要

A vessel dissector for harvesting a target vessel from a donor has a generally cylindrical tip body with a sloping channel formed along a longitudinal side. A channel bottom provides a channel depth that decreases from a distal channel end to a proximal channel end. The tip body has a crescent-shaped forward lip extending distally from the channel. An arcuate collar is slidably disposed in an arcuate recess within the tip body to selectably bridge the channel at the distal end of the channel to form a ring profile with the forward lip. A first ferromagnetic heating element is disposed along a radially outward surface of the forward lip. A second ferromagnetic heating element is disposed on a distal edge of the arcuate collar. The first and second ferromagnetic heating elements are adapted to be energized simultaneously to make a vasiform cut including a pedicle around the target vessel.

主权项

1. A vessel dissector for harvesting a target vessel from a donor site, comprising:
a tubular member extending longitudinally between proximal and distal ends; a generally cylindrical tip body having a sloping channel formed along a longitudinal side of the tip body, wherein a sloping channel bottom provides a channel depth that decreases from a distal end to a proximal end of the channel, and wherein the tip body has a crescent-shaped forward lip extending distally from the distal end of the channel; an arcuate collar slidably disposed in an arcuate recess within the tip body to selectably bridge the channel at the distal end of the channel to form a ring profile with the forward lip; a first ferromagnetic heating element disposed along a radially outward surface of the forward lip, wherein the first ferromagnetic heating element is spaced from a distal edge of the forward lip; and a second ferromagnetic heating element disposed on a distal edge of the arcuate collar, wherein the first and second ferromagnetic heating elements are adapted to be energized simultaneously to make a vasiform cut including a pedicle around the target vessel, wherein a cut vessel and pedicle are guided through the sloping channel after being cut.