PROBLEM TO BE SOLVED: To provide a fluid injection device which can prevent a suction channel from narrowing due to the adhesion of cut matters.SOLUTION: The fluid injection device includes: a suction tube 80 to which at least either of living tissue and a fluid is sucked an injection tube 70 which is interpolated in the suction tube 80, decentering to come in contact with the inner circumferential surface of the suction tube 80, and jets the fluid and a vibration generating part 91 which is arranged in the circumference of the suction tube 80 and generates vibration.COPYRIGHT: (C)2013,JPO&INPIT【課題】切除物の付着によって吸引流路が狭くなることを防ぐことができる流体噴射装置を提供する。【解決手段】流体噴射装置は、生体組織及び流体の少なくともいずれかが吸引される吸引管80と、吸引管80の内周面に接触するよう偏心して吸引管80に内挿され、流体が噴射される噴射管70と、吸引管80の外周に配置され、振動を発生させる振動発生部91と、を有する。【選択図】図2
