Spinal implant, driver tool and nut guide

Abstract

A nut guide guides a nut member of a spinal implant having an implant body and an anchoring screw section, and also guides a driver tool having a lower end formed with a nut engagement tip. A a vertebral connecting rod therein is retained with a pair of the spinal implant to be anchored into vertebral bodies. The nut guide includes a grip section, and a hollow cylindrical shaft extending from the grip section and adapted to permit insertion of the driver tool therein, the cylindrical shaft having a lower distal end formed with a rod engaging segment for engaging with and retaining the connecting rod to place the lower distal end in a fixed place, and a threaded bore formed rearward of the rod engaging segment for momentarily receiving the nut member therein.

1 . A nut guide for guiding a nut member of a spinal implant having an implant body and an anchoring screw section, and for guiding a driver tool having a lower end formed with a nut engagement tip, wherein a vertebral connecting rod is retained with a pair of the spinal implant to be anchored into vertebral bodies, the nut guide comprising: 
 a grip section; and    a hollow cylindrical shaft extending from the grip section and adapted to permit insertion of the driver tool therein, the cylindrical shaft having a lower distal end formed with a rod engaging segment for engaging with and retaining the connecting rod to place the lower distal end in a fixed place, and a threaded bore formed rearward of the rod engaging segment for momentarily receiving the nut member therein;    wherein the cylindrical shaft allows the driver tool to pass therein such that the nut engagement tip is brought into engagement with the nut member guided with the cylindrical shaft to move the nut member from the threaded bore to the implant body of the spinal body.    
   
   
       2 . A nut guide according to  claim 1 , wherein the cylindrical shaft further has a nut guide hole formed between the threaded bore and the rod engaging segment.