External mandibular fracture fixator and fixing method thereof

Abstract

The invention discloses an external mandibular fracture fixator and a fixing method thereof. The fixator comprises an outer fixing rod and a locking assembly, wherein the outer fixing rod is providedwith a through groove, the locking assembly comprises a locking bolt, an upper locking nut and a lower locking nut, the edge of the through groove is provided with a groove edge chamfered inclined plane, the upper locking nut and the lower locking nut are provided with nut chamfered inclined planes, the nut chamfered inclined planes can be in contact with the groove edge chamfered inclined plane,the locking bolt comprises a first externally threaded section, a second externally threaded section and a tip end, and the upper locking nut and the lower locking nut are arranged on the first externally threaded section at an interval. The external mandibular fracture fixator and the fixing method thereof have the advantages that the outer fixing rod is provided with the through groove used forcontaining the locking bolt, and the chamfered inclined planes cooperating with one another are arranged, so that not only can the outer fixing rod be separated from the locking bolt, thereby facilitating an operation, but also the contact area between the upper and lower locking nuts and the outer fixing rod is increased, thereby achieving the technical purpose of firmly fixing the outer fixing rod and the locking bolt.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to an external fixator for mandibular fracture and a fixing method thereof. Background technique [0002] At present, according to statistics, oral and maxillofacial trauma accounts for about 10% to 20% of systemic trauma. Trauma to human bones caused by traffic accidents or other accidents is common, and the number of patients with human maxillofacial bone fractures is on the rise. The treatment of fractures usually adopts open reduction and internal fixation, which is mainly manifested in first cutting open the soft tissue outside the bone and then using bone nails or steel plates, steel wires and other devices to perform internal bone fixation in the tissue to treat maxillofacial bone fractures. The following complications may occur: wound surface infection, retention of foreign bodies in the jaw, rejection of foreign bodies by the human body, especially internal fixation...

AI Technical Summary

Problems solved by technology

[0002] At present, according to statistics, oral and maxillofacial trauma accounts for about 10% to 20% of systemic trauma. Trauma to human bones caused by traffic accidents or other accidents is common, and the number of patients with human maxillofacial bone fractures is on the rise. The treatment of fractures usually adopts open reduction and internal fixation, which is mainly manifested in first cutting open the soft tissue outside the bone and then using bone nails or steel plates, steel wires and other devices to perform internal bone fixation in the tissue to treat maxillofacial bone fractures. The following complications may occur: wound surface infection, retention of foreign bodies in the jaw, human body’s rejection of foreign bodies, especially for children, internal fixation will affect the development of the child’s jaw in the future, etc.

[0003] However, internal fixation is widely used clinically, which not only has a negative psychological effect on patients, but also sometimes requires trauma to the patient again to remove the internal fixation after the fracture has recovered, which to a certain extent has caused secondary trauma to the patient. Trauma, which brings insurmountable difficulties to both medical staff and patients themselves;

[0004] Although there are also some external fixators in the prior art, such as the improved jaw fracture external fixator with application number 201020689219.4 and the multifunctional miniature mandibular fracture reduction external fixator with application number 97245416.0, the above-mentioned external fixators all exist The problem of complex structure and inconvenient use

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