Passage establishment device for posterior spinal fusion minimally invasive surgery

A passage establishment device for a posterior spinal fusion minimally invasive surgery, relating to the technical field of medical appliances, and comprising: an open tube (600). A through hole (601) passing through two ends of the open tube (600) in the axial direction is provided inside the open tube (600), and an open part (610) is provided on the wall of the open tube (600). The open tube (600) of the passage establishment device can be inserted between vertebral bodies (10), and can also be removed from between the vertebral bodies (10), and a surgical passage is formed by the through hole (601) of the open tube (600) so that a cage can penetrate, thereby safely protecting human body tissue and facilitating subsequent surgical operations of a surgeon; the open tube (600) is convenient and quick to install, thereby shortening the operation time, and the device is convenient to disassemble, clean, and disinfect.