PROBLEM TO BE SOLVED: To do away with a staying part of blood inside a body fluid port or variation in fluidity, and to achieve a uniform flow of the blood in a central part and a peripheral part of hollow fibers charged inside a housing.SOLUTION: In this body fluid port 1, an outlet 2O of a body fluid introduction part 2 is formed in a position having a distance D3 from the position of the outlet 2O to an intersection point between a line perpendicularly dropping to a first long direction L1 from the outlet 2O and an opening section 34O of hollow fibers, and is formed in the position having a distance D1 from the position of the outlet 2O to an intersection point between a line extended toward a peripheral side part direction SDO from the outlet 2O and a line perpendicularly extended to a second long direction from a position MOP of an endmost part of the peripheral side part direction SOD of the opening section 34O of the hollow fibers from the center line CL. When the distance D4 of the whole side part direction SD of the opening section 34O of the hollow fibers is formed to be 100, the distance D1 is formed to be 10-30.COPYRIGHT: (C)2013,JPO&INPIT【課題】体液ポート内の血液の滞留部や流動性のバラツキをなくし、ハウジング内に装填された中空糸の中心部と外周部の血液の均一な流れを実現すること。【解決手段】体液導入部2の出口2Oは、当該出口2Oの位置と、当該出口2Oから第1長手方向L1に垂下した線と、前記中空糸の開口断面34Oとの交点までの距離D3を有する位置に形成し、かつ当該出口2Oの位置と、当該出口2Oから外周側部方向SDOへむけて延長した線と、中心線CLから中空糸の開口断面34Oの外周側部方向SDOの最端部の位置MOPから第2長手方向に垂直に延長した線との交点までの距離D1を有する位置に形成し、中空糸の開口断面34Oの側部方向SD全体の距離D4を、100に形成した場合、前記距離D1を10~30に形成した体液ポート1。【選択図】図3
