Submucosal stone water injection clamping device for minimally-invasive cholelithotomy operation

The utility model discloses a submucosal stone water injection clamping device for a minimally-invasive cholelithotomy operation. The submucosal stone water injection clamping device is characterized in that a water injection device and a clamping device body are arranged in an outer shell, the water injection device comprises a cylinder, a piston is arranged in the cylinder, the tail end of the piston is connected with a pushing handle through a connecting rod, a three-way water outlet tube is arranged at the front end of the cylinder and sleeved with a rotatable ball, three needle tubes are arranged in front of the ball and respectively connected with the three-way water outlet tube through hoses, the clamping device body comprises two semi-circular clamping heads, a liquid inlet tube is connected to one of the clamping heads, a liquid outlet tube is connected to the other one of the clamping heads, operating rods are connected to the tails of the clamping heads, and a steering sheet is fixed to the upper end of a first outlet in the front end of the outer shell in a downwards-inclined mode. The submucosal stone water injection clamping device is simple in structure and convenient to use, the water injection function can be achieved on the portion with stone to enable tissues of the portion to be expanded, then the stone can be easily clamped out through the clamping device body, and the high practical value is achieved.