Internal fixation structure for spine posterior nail rod

• Main Authors: MI YUNZHI, WANG JUN, MENG QINGXIN, FANG JICHENG, HUANG HEQING, JI WUZHONG
• Format: Patent
• Language: Chinese; English
• Published: 30.08.2022
• Subjects: DIAGNOSIS; HUMAN NECESSITIES; HYGIENE; IDENTIFICATION; MEDICAL OR VETERINARY SCIENCE; SURGERY

The utility model discloses a spine posterior screw rod internal fixing structure which comprises two transverse shafts arranged in parallel, the transverse shafts are movably sleeved with a positioning seat, the positioning seat is movably sleeved with a transverse plate, a first inner hexagonal fastening nut arranged on the top of the positioning seat in a threaded and sleeved mode is arranged above the transverse plate, and a second inner hexagonal fastening nut arranged on the top of the positioning seat in a threaded and sleeved mode is arranged above the first inner hexagonal fastening nut. A first bolt seat and a second bolt seat are arranged on the transverse shaft, universal bolt bodies are movably arranged in the first bolt seat and the second bolt seat in a sleeved mode, and second inner hexagonal fastening nuts are arranged in the first bolt seat and the second bolt seat in a threaded and sleeved mode. The reverse-angle thread design is adopted, installation is easy, adjustment is convenient, thre