The invention provides a self-breaking type pressing bolt
assembly, and belongs to the technical field of orthopedics medical apparatus and instruments. The self-breaking type pressing bolt
assembly is used for pressing and resetting from the outer side when fracture of tibial
plateau occurs. According the technical scheme, the
diameter of the back portion of a
threaded rod of the pressure bolt isless than that of front portion of the
threaded rod, the joint part of a large
diameter segment and a small
diameter segment of the
threaded rod is an inclined circular connecting segment, an inner hole is formed in a rod body of the back portion of the threaded rod, the inner hole of a pressing nut is an unequal diameter screw hole, a
screw thread of the screw hole with large diameter of the front portion of the pressing nut is matched with the
screw thread of the large diameter segment of the threaded rod of the pressing bolt, the
screw thread of the screw hole with small diameter of the back portion of the pressing nut is matched with the screw thread of the small diameter segment of the threaded rod of the pressing bolt, the connecting position of the screw hole with the large diameter of the front portion of the pressing nut and the screw hole with the small diameter of the back portion of the pressing nut is a perpendicular circular plane. The self-breaking type pressing bolt
assembly has a simple structure, convenient operation and reliable effect, eliminates the situation that pain and limitation of movement occur under the local
soft tissue stimulation caused by the excessive length which is left at the
tail end of the pressing bolt, avoids the occurrence of various complications, and achieves a satisfactory restoration effect.