| 摘要 |
The invention concerns an equipment comprising two shoring rods, members for anchoring said two rods to the vertebrae, at least a crosspiece ( 1 ) in two parts ( 5, 6 ) and members ( 2 ) assembling said crosspiece ( 1 ) to the shoring rods. The invention is characterised in that one of the crosspiece parts ( 5 ) comprises a spherical head ( 7 ) and a thread ( 8 ) adjacent to said head ( 7 ); the other crosspiece part ( 6 ) comprises a spherical bulging end ( 9 ), defining internally a spherical cavity ( 10 ) adapted to receive said head ( 7 ), and each crosspiece ( 1 ) comprises a nut ( 12 ) designed to co-operate with said thread ( 8 ), including further a spherical seat ( 13 ) with a shape matching that of the wall ( 11 ) delimiting the cavity ( 10 ). The invention also concerns plates ( 30 for anchoring the equipment to the sacrum. |
