< Topic >Two cavity catheters of the improved which prevents recycling the blood are offered.SolutionsAs it has extended the partition of two cavity catheters (26) tube itself (11) according to inside it adopts inside that and the cavity (22) with resets and the cavity (24) with is separated. The adoption cavity (22) and you reset and the cavity (24) the slanted open part which respectively, each one is inclined the aforementioned partition (26) and the aforementioned tube itself (11) facing toward the aforementioned distal (2036) edge (12,14) you have, as being divided the aforementioned open part (12,14) the aforementioned partition (26) by, the aforementioned partition (26) the side section of one side confronts the aforementioned adoption cavity (22), the aforementioned partition (26) the other side section is confronted the aforementioned resetting cavity (24). Furthermore the partition (26), the aforementioned open part (12,14) the Takashi provision 1 where it has extended to the territory (16,18) it has at least at least on the one hand, the aforementioned tube itself of the side section of the aforementioned two (11) alongside the longitudinal direction part the aforementioned tube itself (11) in the aforementioned distal (2036) edge.< Selective figure >Figure 1【課題】血液の再循環を防止する改良型の二腔カテーテルを提供する。【解決手段】二腔カテーテルの隔壁(26)が管状本体(11)の内部に沿って延びているとともにその内部を取入れ腔(22)と戻し腔(24)とに分離している。取入れ腔(22)および戻し腔(24)はそれぞれ、前記隔壁(26)および前記管状本体(11)の前記遠位端に向かって各自傾斜している斜め開口部(12,14)を備え、前記開口部(12,14)が前記隔壁(26)により分割されて、前記隔壁(26)の一方の側部が前記取入れ腔(22)に面するとともに前記隔壁(26)の他方の側部が前記戻し腔(24)に面している。さらに隔壁(26)は、前記管状本体(11)の前記遠位端において前記2つの側部の少なくとも一方に、前記管状本体(11)の長手方向部分に沿って前記開口部(12,14)の領域に延びている少なくとも1本の隆条(16,18)を備える。【選択図】図1
