PROBLEM TO BE SOLVED: To provide a surgical handpiece in which one of a supply pipe and a suction flow passage member can be connected in the vicinity of the tip of a housing without using a screw, a liquid injection device, and a suction device.SOLUTION: A surgical handpiece includes a housing that holds at least one tube 205 where liquid used for surgery flows, which is gripped by a user. The housing includes a first housing 210a and a second housing 210b connected to the first housing. The first housing includes a ring member 280 at its end, where the tube penetrates or an end part of the tube is disposed inside, and the second housing includes a convex part 290 inserted into the ring member, at its end.SELECTED DRAWING: Figure 15【課題】供給管と吸引流路部材との何れか１つを筐体の先端付近でネジによらずに結合させることができる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】手術に利用される液体が流れる管２０５を少なくとも１つ保持し、ユーザーによって把持される筐体を備え、筐体は、第１ハウジング２１０ａと、第１ハウジングと結合された第２ハウジング２１０ｂと、を備え、第１ハウジングは、端部に、管が貫通する又は管の端部が内部に配置されるリング部材２８０を備え、第２ハウジングは、端部に、リング部材に挿入されている凸部２９０を備える手術用ハンドピース。【選択図】図１５
