Surgical instrument for mandibular condyle

Abstract

The invention relates to a medical instrument for maxillofacial surgery, in particular to a surgical instrument for mandibular condyle. The surgical instrument comprises a lower supporting and closing part corresponding to the mandibular incisure of a human body, an upper supporting and closing part matched with the zygomatic arch corresponding to the mandibular incisure of the human body, wherein two ends of the lower supporting and closing part are respectively hinged with a lower supporting front rod and a lower supporting rear rod; the two ends of the upper supporting and closing part are respectively hinged with an upper supporting front rod and an upper supporting rear rod; the upper end of the lower supporting front rod and the lower end of the upper supporting front rod are hinged on a front hinged shaft; the upper end of the lower supporting rear rod and the lower end of the upper supporting rear rod are hinged on a rear hinged shaft; the front hinged shaft and the rear hinged shaft are installed on a center shaft. A distracter is compact in structure, convenient to use, small in the pain of a patient and reasonable in force bearing, and the situation that mechanical deformation or fracture in use does not easily occur, and the surgical instrument is adaptable to different individual differences.

Description

technical field [0001] The invention relates to a medical instrument for maxillofacial surgery, in particular to a mandibular condyle surgical instrument. Background technique [0002] There are two protrusions at the end of the mandibular branch of the mandible. The one located at the rear is called the condyle, which consists of the enlarged mandibular head at the upper end and the mandibular neck below the head. The mandibular condyle is elliptical, with a long inner and outer diameter and a short anteroposterior diameter. In lateral view, a transverse crest divides the top of the condyle into two oblique planes. The anterior slope is small, which is the functional surface, and is the load-bearing area of ​​the joint; the mandibular condyle is a prone area for jaw fractures, which can be caused by direct impact on the condyle, or can be caused by trauma to the chin or body of the mandible. Indirect fractures caused by blows are easily missed clinically. The mandibular ...

AI Technical Summary

Problems solved by technology

But this kind of spreader is bulky and inconvenient to operate. During the operation, the front end is located in the patient's oral cavity, and the rear end is located outside the oral cavity, which hinders the operation and causes more pain for the patient; The brace part is close to the inner wall of the patient's side of the cheek during use, which is inconvenient to operate; in addition, it is difficult to control the force of the lever operation, and the brace part is easy to bend and deform if there is a slight carelessness; in addition, the upper brace part and the lower brace part The included angle is fixed and cannot adapt to the individual differences of patients, which will affect the accuracy of distraction

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