Patent ID: 7981127
Filing Date: 2011-07-19
Classification: A61B

Abstract:
1. A treatment sheath for endoscopic blood vessel harvesting, comprising: a sheath main unit which can be inserted into a body through a cut skin portion in order to harvest a blood vessel in the body, the sheath main unit including a side outer wall, a tip end and a base end; a first channel formed along a longitudinal direction of the sheath main unit in the sheath main unit the first channel having a forward opening and a backward opening respectively formed in the tip and base ends, an endoscope being inserted into the first channel from the backward opening so that a window of the endoscope is outwardly exposed from the forward opening; second and third channels formed along the longitudinal direction of the sheath main unit in the sheath main unit, the second and third channels respectively having forward openings formed in the tip end of the sheath main unit and backward openings formed in opposite portions of the side outer wall of the sheath main unit; a blood vessel holding member which is inserted through the second channel which is movable in the longitudinal direction, and which includes a blood vessel holding section formed at a forward end and an operating section formed at a backward end, the blood vessel holding section being forwardly extendable from the forward opening of the second channel to hold a side surface of the blood vessel to be harvested; a blood vessel cutting device which is inserted through the third channel which is movable in the longitudinal direction, and which includes a blood vessel cutting section formed at a forward end and an operating section formed at a backward end, the blood vessel cutting section being forwardly extendable from the forward opening of the third channel for cutting the blood vessel to be harvested, which is held by the blood vessel holding section; and wherein the operating sections of the blood vessel holding device and the blood vessel cutting device are outwardly projected from the backward opening of the second and third channels in an opposite direction, wherein blood vessel holding section forwardly extend from the forward opening of the second channel are positioned on opposite sides of the window of the endoscope to sandwich the window.