PROBLEM TO BE SOLVED: To provide a blood processing device capable of improving a blood flow by sufficiently securing (at a wide space BSP) a space near a blood inlet 7I of an inlet-side sheet 2I and near a blood outlet 7O of an outlet-side sheet 2O.SOLUTION: A plurality of nonwoven fabrics are superposed into a prescribed thickness, and a seal part (5S) is formed inward an outermost edge part (5OO) of the nonwoven fabric to delimit an inside part (5I) and an outer edge part (5O) by the seal part (5S). Further, an outer edge seal part (5OS) is formed on the outer edge part (5O), where the thickness (5OL) of the outer edge part (5O) is formed smaller than the thickness (5IL) of the inside part (5I).SELECTED DRAWING: Figure 1COPYRIGHT: (C)2018,JPO&INPIT【課題】入口側シート2Iの血液入口7I近傍、出口側シート2Oの血液出口7O近傍のスペース(空間)を充分確保(広い空間BSPに)することができ、血液の流れを良くすることができる血液処理器を提供すること。【解決手段】不織布を複数枚、所定の厚さに重ねて、当該不織布の最外縁部(5OO)よりも内側に、シール部(5S)を形成して、当該シール部(5S)により、内部(5I)と外縁部(5O)に区画した。さらに前記外縁部(5O)に外縁シール部(5OS)を形成し、前記外縁部(5O)の厚み(5OL)は、前記内部(5I)の厚み(5IL)よりも小さくなるように形成した。【選択図】図1
