PROBLEM TO BE SOLVED: To provide an improved obturator as regards a trocar assembly for use in minimally invasive surgical procedures, such as endoscopic or laparoscopic type procedures.SOLUTION: The obturator 100 for use in penetrating tissue includes an elongate member 102 defining a longitudinal axis, and having a proximal end and a distal end, and a penetrating member 104 adjacent to the distal end of the elongate member 102. The penetrating member 104 has a distal penetrating tip 124 dimensioned to pass through the tissue. The penetrating member 104 defines an external wall 134 leading toward the penetrating tip 124. The external wall 134 includes a plurality of raised elements extending at least radially outwardly relative to the longitudinal axis and being in general longitudinal alignment. Adjacent raised elements are spaced along the longitudinal axis to thereby accommodate tissue displaced during passage of the penetrating member 104 through the tissue. The raised elements are dimensioned to be generally atraumatic to the tissue. The raised elements may define an arcuate profile.COPYRIGHT: (C)2013,JPO&INPIT【課題】改良された栓塞子を提供する。【解決手段】組織を穿刺する際に使用するための栓塞子100は、長手方向軸を画定し、近位端および遠位端を有する細長い部材102と、細長い部材102の遠位端に隣接する穿刺部材104とを含む。穿刺部材104は、組織を通過するような寸法の遠位穿刺先端124を有する。穿刺部材104は、穿刺先端124へと至る外壁134を画定する。外壁134は、長手方向軸に対し少なくとも半径方向外向きに延在し、略長手方向に整列した複数の隆起要素を含む。隣接する隆起要素は、長手方向軸に沿って離間し、それによって、組織を通して穿刺部材104が通過する際、変位した組織を収容する。隆起要素は、概して、組織に対し非外傷性の寸法である。隆起要素は、円弧状外形を画定してもよい。【選択図】図3
