The invention relates to a novel interspinous fixing sleeve piece and a usage method thereof. The novel interspinous fixing sleeve piece comprises an interspinous fixing
system and a cavity opening tool, wherein the interspinous fixing
system comprises an interspinous fixator and a conveyor; the cavity opening tool comprises a passage opening device, a passage tube and a
drill bit
assembly; the part, close to the far end, of the passage opening device is a far end straight section, a
puncturing head is arranged at one end, the middle of the passage opening device is a bent section, and the part close to the near end is a near end straight section; the passage tube is a rigid tube, the part close to the far end is a straight section, the middle part is a bent section, the part close to the near end is a straight section, and the bent section in the middle of the passage tube is similar to the bent section in the middle of the passage opening device in shape; the
drill bit
assembly comprises a
drill bit and a bendable and axially rigid drill shaft, the far end of the drill shaft is fixedly connected with the
drill bit, and the drill shaft penetrates through the passage tube to extend out of the far end of the passage tube when the drill shaft is mounted in the passage tube. With the adoption of the novel interspinous fixing sleeve piece and the usage method thereof, minimally invasive unilateral
percutaneous puncturing can be realized, operations are relatively simple and rapid, operation wounds are smaller, and the trend for minimally invasive development of non-fusion fixation operations is met.