The present invention offers two embodiments of a filler for spine, both two include a catheter and a catheter holder for fastening the catheter, there is a guide pin inside of the catheter, and the guide pin is fastened on the guide pin holder, a sealed or ventilate feed bag made of soft nonmetal materials according to biocompatibility or absorbing materials is set at the end of the catheter, the feature of the two embodiments lies in that a outer thimble is set at the outer side of the catheter, the outer thimble is fixed on the outer thimble holder, a dismountable structure connects the outer thimble holder and catheter holder, a reducing cone of tapered outer thimble at the open end of the said outer thimble connects to a little diameter outer thimble, or a inside convex plate of outer thimble said catheter has a reducing cone corresponding to the reducing cone of outer thimble at the reducing cone of outer thimble or the inside convex plate of outer thimble, and the reducing cone of catheter connects to a little diameter catheter the said feed bag is set in the catheter through its open end, lies in between outer thimble and catheter and fastened tightly at the outer wall of catheter by outer thimble.
