PROBLEM TO BE SOLVED: To prevent a failure caused by internal deterioration or corrosion of a body fluid suction device by suppressing occurrence of bedewing inside the body fluid suction device.SOLUTION: In a body fluid suction device (1), a suction tube (2) and a suction pump (3) are connected via a suction flow passage (4), a collection tank (5) is provided in the middle of the suction flow passage (4), and body fluids sucked by the suction tube (2) together with expiration are collected in the collection tank (5). The suction flow passage (4) includes a condensation mechanism (6) for discharging moisture which is produced by condensing the expiration, into the collection tank (5). Furthermore, at a downstream side from the condensation mechanism (6) in the suction flow passage (4), a temperature raising mechanism (23) is provided for raising the temperature of the expiration.COPYRIGHT: (C)2013,JPO&INPIT【課題】体液吸引装置の内部での結露の発生を抑制し、体液吸引装置の内部の劣化や腐食などによる故障を防止すること。【解決手段】本発明では、吸引チューブ(2)と吸引ポンプ(3)とを吸引流路(4)を介して接続するとともに、吸引流路(4)の中途部に収集タンク(5)を設け、吸引チューブ(2)で呼気とともに吸引した体液を収集タンク(5)に収集する体液吸引装置(1)において、吸引流路(4)に、呼気を凝縮させて生じた水分を収集タンク(5)に排出するための凝縮機構(6)を設けることにした。また、前記吸引流路(4)の凝縮機構(6)よりも下流側に呼気を昇温させるための昇温機構(23)を設けることにした。【選択図】図1