Patent ID: 8480696
Filing Date: 2013-07-09
Classification: A61B

Abstract:
1. A cutting device for harvesting a vessel section, comprising: an outer tubular member having at least one cutting element positioned adjacent to a distal end of the outer tubular member; an inner tubular member slidably received within a lumen of the outer tubular member, wherein the outer and inner tubular members are capable of being advanced over a vessel section to core out the vessel section and tissue adjoining the vessel section; a rollout intravascular sheath to protect the vessel's endothelial layer during insertion of a vessel support device, wherein the sheath terminates at opposing, first and second ends; and an inner tube that rolls out the rollout sheath as the inner tube is advanced into the vessel, the inner tube defining an outer surface, an inner passageway, a leading end and a trailing end; wherein the first end of the sheath is slidably coupled to the outer surface, an intermediate section of the sheath is inverted about and abuttingly contacts the leading end and the opposing second end of the sheath projects from the inner passageway and beyond the trailing end such that as the first end of the sheath is held stationary and the inner tube is longitudinally advanced relative to the first end, the sheath unrolls.