SURGICAL OPERATION SYSTEM FOR LUMBAR INTERBODY FUSION AND DEVICE FOR KEEPING LUMBAR INTERBODY SPACE TO BE USED IN SURGICAL OPERATION FOR LUMBAR INTERBODY FUSION

摘要

Disclosed are a surgical operation system for lumbar interbody fusion provided with a lumbar interbody fusion device which has a simple constitution and a small size, shows excellent handling properties, high reliability and high economical efficiency, enables the performance of a lumbar interbody fusion treatment within a short time and thus largely reduces the burden on a patient; and a device for keeping lumbar interbody space to be used in a surgical operation for lumbar interbody fusion. A surgical operation system for lumbar interbody fusion that is to be mounted in between lumbar bodies (L1, L2) adjacent to each other to fuse the lumbar interbody, comprising: a main body (11-11i), wherein outer surface-engagement parts (15, 14-14c) engaging to the opposing faces (L1a, L2a) of the lumbar bodies are formed on the outer surface of a substantially hollow cylindrical or tapered hollow conical board having a bottom at the front end and fitting for the lumbar interbody, and one or more guide holes (17-17d, 18-18d) penetrating along the lumbar body direction from the deep part of a female screw (16), which is provided in the hollow inner face (16a) in the back end side, to the outer surface while spreading out in the open-fan shape are formed; and a device (10-10k) for fixing the lumbar interbody which comprises one or more pins (30-30k) engageably placed in the guide holes and press screws (40-40k, 50) interconnecting with the female screw (16) and pressing the back end of the pins due to the thrust force thereof, and the front end side of which is guided along the guide holes due to the press screws pressing the back end of the pins so that the device is inserted into the lumbar bodies.