Negative pressure detection device for tightness of sterile syringe

The invention discloses a negative pressure detection device for the sealing performance of a sterile syringe, and belongs to the field of negative pressure detection devices. A sterile injector sealing performance negative pressure detection device comprises a working table, a sterile injector body is arranged above the working table, a conical head is fixed to the top of the sterile injector body, a connector is arranged above the sterile injector body, a fixing assembly used for fixing the conical head is arranged on the connector, and the conical head is fixed to the working table. A sealing assembly used for sealing the conical head is arranged on the fixing assembly in a transmission mode. The device is simple in structure, convenient and practical, through mutual cooperation of the fixing assembly and the sealing assembly, the connector and the conical head at the end of the sterile syringe body can be conveniently connected and fixed, meanwhile, the good sealing effect is achieved, the detection accur