A sliding rod-type lumbar vertebra hyperosteogeny grinding device, comprising a sleeve (4), sliding rods (5) being fixed to the inside of the sleeve (4) in the length direction of the sleeve (4) the sliding rods (5) are provided with a grinding motor (15) that is capable of moving along the sliding rods (5) a holding rod (1) is fixed on the top of the grinding motor (15) and extends out from the top of the sleeve (4) a hollow main shaft (14) is provided on the grinding motor (15) a grinding disc (10) is fixed to the end of the main shaft (14) several grinding sharp tapers (11) are uniformly distributed on the lower surface of the grinding disc (10) a support rod (12) is inserted into the main shaft (14), and the bottom of the support rod (12) has a tapered shape a buffering spring (13) is connected between the support rod (12) and the main shaft (14) an air suction pipe (8) is connected to the wall of the bottom portion of the sleeve (4) an air suction device (9) is connected to the end of the air suction pipe (8). The device has a simple structure, facilitates protrusion grinding, and is hygienic, improving the sealing performance of the sleeve, making it easy for medical staff to tightly grip the holding rod and tightly grip the sleeve.Linvention concerne un dispositif de meulage dhyperostéogénèse de vertèbre lombaire de type à tiges coulissantes, comprenant un manchon (4), des tiges coulissantes (5) étant fixées à lintérieur du manchon (4) dans la direction longitudinale du manchon (4) les tiges coulissantes (5) sont pourvues dun moteur de meulage (15) qui est apte à se déplacer le long des tiges coulissantes (5) une tige de retenue (1) est fixée sur la partie supérieure du moteur de meulage (15) et sétend hors de la partie supérieure du manchon (4) un arbre principal creux (14) est disposé sur le moteur de meulage (15) un disque de meulage (10) est fixé à lextrémité de larbre principal (14) plusieurs effilements tranchants de meulage (11) sont répartis unif
