Drainage device for oncology

The utility model discloses a drainage device for oncology, setting through vacuum device can make the continuous production negative pressure in inside of stock solution bottle, the tumour hydrops can be absorb out in cooperation setting through syringe needle and transfer line, through the cooperation setting of two air cavitys and double -piston can be continuous produce inspiratory effect to the gas -supply pipe, but carry out the back and forth movement through corresponding round lead screw and screw rod sliding block's cooperation setting drive RAM in the air cavity, cooperation settingthrough driving gear and driven gear can make the drive shaft drive two round lead screws rotations simultaneously, cooperation setting through actuating lever and poker rod can manual messenger's drive shaft be rotated, cooperation through worker venturi tube and check valve sets up in the steerable air cavity gas purging and produces attraction to gaseous in the gas -supply pipe, the utility model discloses a cooperati