Preferably, the invention relates to a device wherein {HEAD ~ the brackets} do not have {TAIL ~ extensions} that are directed perpendicularly to the distraction screw and perpendicularly to the brackets, at a level between the brackets and directed away from the distraction screw into the site of osteogenesis 
not have
Preferably , the invention relates to a device wherein { HEAD ~ the brackets } do not have { TAIL ~ extensions } that are directed perpendicularly to the distraction screw and perpendicularly to the brackets , at a level between the brackets and directed away from the distraction screw into the site of osteogenesis
OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH