PROBLEM TO BE SOLVED: To provide an easy-to-use surgical handpiece to and from which a suction tube, a member related to suctioning, can be attached and detached, a liquid injection device, and a suction device.SOLUTION: A surgical handpiece 200 includes a housing 210 gripped by a user and a suction tube 400 detachably held by the housing for suctioning liquid.SELECTED DRAWING: Figure 8COPYRIGHT: (C)2017,JPO&INPIT【課題】吸引に関する部材である吸引管が着脱でき、使い勝手を良くした手術用ハンドピース、液体噴射装置、吸引装置を提供する。【解決手段】ユーザーによって把持される筐体210と、筐体に着脱可能に保持され、液体を吸引するための吸引管400と、を備える手術用ハンドピース200。【選択図】図8