Posterior laparoscope balloon dilatation device

The invention relates to the technical field of medical equipment, in particular to a rear laparoscope balloon dilatation device which comprises a main body mechanism, and the main body mechanism is connected with a dilatation mechanism in a matched mode through a connecting mechanism; a sealing mechanism is arranged on the connecting mechanism in a matched and sliding mode. The main body mechanism is sleeved with a fixing mechanism; a driving mechanism is rotationally arranged on the fixing mechanism; the main body mechanism is pushed and pulled, gas is conveyed into the expansion mechanism through the connecting mechanism, and the main body mechanism and the expansion mechanism can be conveniently assembled and disassembled by operators; the sealing mechanism is pressed to make the sealing mechanism abut against the main body mechanism and the expansion mechanism during expansion, so that the situation that the sealing effect is poor due to ventilation of the main body mechanism and the expansion mechanism