| abstract |
An endoscope conduit switching device is provided, which is capable of extremely easily and simply performing one-touch switching between a state of water supply and a state of suction using a single channel tube. A channel tube (3) inserted through an insertion part (2) and opening at the tip of the insertion part (2), a suction connection pipe (15a) communicating with an external suction means (50), and communicating with an external water supply means (60). In a standby state in which the water supply connection pipe 14a is connected to the cylindrical member 12 and the piston-like member 20 is not pushed into the cylinder member 12, the water supply connection pipe 14a communicates with the channel tube 3 and sucks. In the operation state in which the connection pipe 15a is not in communication and the piston-like member 20 is pushed into the cylinder-like member 12, the suction connection pipe 15a communicates with the channel tube 3 and the water supply connection pipe 14a is closed. Switch to. [Selection diagram] Fig. 1 |