Devices, Methods and Systems to Implant and Secure an Intervertebral Implant for Spinal Treatment

Abstract

Various devices, methods, and systems to implant and secure a fusion cage or intervertebral prosthesis during treatment of spinal injury or disease are provided. In various embodiments, such devices may comprise an instrument assembly having a body comprising a head, a shaft, and a handle; an insertion stop; and an intervertebral device retainer. Various embodiments also may comprise an impactor assembly comprising a housing; a bit comprising a head, a shaft, and a coupler; a transmission comprising a housing, a cam, a cam follower, a collet, and a driveshaft; and the motor. In various embodiments, the impactor assembly may be deployed with adjustments for the frequency, displacement, and force of impulses delivered to an anchor for the intervertebral device.

1 . A system for treating a joint between two bony segments comprising:
 an implant configured for placement in the joint;   an anchor configured to retain the implant along one of the bony segments;   an anchor impactor comprising a motorized impulse generator coupled to an impactor bit comprising a head; and   an elongated insertion instrument comprising a head disposed at one end of the instrument, the head comprising an implant retainer disposed at a first end of the head, a channel configured to receive the anchor along a second end of the head and direct the anchor into the implant at the first end of the head, and a guide configured to receive the head of the impactor bit.   
     
     
         2 . An apparatus for implantation of a therapeutic implant in a joint between two bony segments comprising:
 an anchor impactor comprising a motorized impulse generator coupled to an impactor bit comprising a head; and   an elongated insertion instrument comprising
 a handle disposed at a first end of the instrument, and 
 a head disposed at a second end of the instrument, the head comprising a guide configured to receive the head of the impactor bit. 
   
     
     
         3 . A method of preparation of the system of  claim 1  for treating a joint between two bony segments, the method comprising the steps of:
 acquiring the components of a system according to  claim 1 ; 
 using the implant retainer to attach the implant to the head of the insertion instrument; 
 placing the anchor into the channel along the second end of the head of the insertion instrument; 
 connecting the impulse generator to the impactor bit at the coupler; 
 connecting the impulse generator to a power source; 
 placing the head of the impactor bit into the guide along the second end of the head.