A Bone Restoration for Large Craniomaxillofacial Defects

Abstract

The invention provides a bone restoration for large-area craniofacial bone defect. The bone restoration comprises a supporting structural piece, osteogenesis structural pieces and fixing nails, wherein the supporting structural piece comprises structural beams; a plurality of fixing holes are formed in the structural beams in a length direction; the fixing nails and the fixing holes are movably connected; the osteogenesis structural pieces comprise connecting holes and drainage holes; the connecting holes are formed in the upper ends of the drainage holes; and the supporting structural piece and the osteogenesis structural pieces are movably connected by virtue of the connecting holes. The types, sizes and assembling mode of the supporting structural piece and the osteogenesis structural pieces can be freely selected, so that the bone restoration has the advantages of being convenient to assemble, free to replace, simple to operate, convenient to cut, diverse in selections and the like, and the bone restoration can meet various demands; and in an operation, defect implantation can be implemented just by conducting plastic-forming on the supporting structural piece and then installing the different osteogenesis structural pieces on the supporting structural piece; therefore, in comparison with an existing customized craniofacial bone restoration applied to the clinical field, the manufacturing time of the bone restoration can be greatly shortened.

Description

technical field [0001] The invention belongs to the field of biological materials, in particular to a bone prosthesis for large-area craniomaxillofacial bone defect. Background technique [0002] The bone healing repair of craniofacial bone defects has always been an unresolved problem in the field of neurosurgery. At present, craniofacial defects are generally treated in two ways: titanium mesh coverage or titanium alloy, polymer material customized body for filling. Clinical practice shows that there are some problems in the treatment of large-area craniomaxillofacial defects in these two methods: on the one hand, when using titanium mesh for repair, because the metal material is too thin and the hollow has high thermal conductivity, the patient is not suitable for working in the sun At the same time, because the cranio-maxillofacial is in an open state, patients may experience long-term headaches, dizziness and other complications; on the other hand, when using polymer m...

AI Technical Summary

Problems solved by technology

Clinical practice shows that there are some problems in the treatment of large-area craniomaxillofacial defects in these two methods: on the one hand, when using titanium mesh for repair, because the metal material is too thin and the hollow has high thermal conductivity, the patient is not suitable for working in the sun At the same time, because the cranio-maxillofacial is in an open state, patients may experience long-term headaches, dizziness and other complications; on the other hand, when using polymer materials for craniofacial repair, although polymer materials such as peek, plexiglass ( Polymethyl methacrylate) has the advantages of more stable chemical properties, less corrosion, plasticity, and X-ray transparency than metal materials, but it has a long custom time period, and it is difficult to make a restoration that matches the patient's defect in time. Moreover, the polymerization reaction during on-site preparation is harmful to the doctor’s body, requires high clinical operation skills, and there are problems such as fusion of the material and the bone interface in the long-term. The key problem is that no matter which of the two methods is used for repair, the If it cannot achieve bone repair of craniomaxillofacial defects or regeneration of craniomaxillofacial, it can only restore the shape of the skull and prevent external forces from impacting the brain.

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