An oral mouth gag with adjustable mouth opening size

Abstract

The invention provides a mouth opener allowing opening degree to be adjusted. The mouth opener comprises an upper jaw supporting plate, a lower jaw supporting plate, an upper retainer, a lower retainer, a rotating bar, a connecting box, a motor and a handle. The front end of the upper retainer is detachably connected with the upper jaw supporting plate; the rear end of the upper retainer is connected with the connecting box; the front end of the lower retainer is telescopically connected with the lower jaw supporting plate; the rear end of the lower retainer is hinged to one end of the rotating bar; a worm gear and worm matching with each other are disposed inside the connecting box; the rotating bar is connected with the worm gear through a driven shaft arranged in the axis of the worm gear; the rotating bar is perpendicular to the driven shaft; the worm is connected with a motor which provides power; the handle is arranged under the connecting box. The mouth opener has the advantages that the opening degree of the mouth can be automatically controlled and retained, ensuring opening precision and opening convenience; the components are easy to replace, ensuring usage for various types of patients in the rehabilitation period and ensuring high efficiency and low cost; the mouth opener is convenient for the patient to hold by hand for use.

Description

technical field [0001] The invention relates to an oral mouth gag, in particular to an oral gag for clinical mouth opening training which can adjust the size of the mouth opening by using an electronic device. Background technique [0002] Studies have shown that one of the main signs of temporomandibular joint ankylosis is limited mouth opening. The quality of mouth opening training after reset will directly affect the function of masticatory muscles. The use of gags to practice mouth opening is a good way for patients with temporomandibular joint disease to restore function after surgery and prevent recurrence. an effective method. [0003] However, the prior art has the following defects: 1. It is not applicable to different patients. In this patent, the shape and size of the maxillary plate and the mandibular plate are single, fixedly connected with the frame, and cannot be replaced. However, the type, shape, and size of the dentition of different patients are quite dif...

AI Technical Summary

Problems solved by technology

[0003] However, the prior art has the following defects: 1, it is not applicable to different patients

In this patent, the shape and size of the maxillary plate and the mandibular plate are single, fixedly connected with the frame, and cannot be replaced. However, the type, shape, and size of the dentition of different patients are quite different. patient

2. Patient's occlusal discomfort,

The grooves in the front part of the upper and lower jaw plates are smooth, and tooth spacers made of flexible materials cannot be fixed; when the gag works, the relative displacement between the teeth and the upper and lower jaw plates is prone to occur, and the teeth are unevenly stressed and the pressure is too large, which is easy to cause The patient's bite is uncomfortable, and even the teeth are damaged, causing pain

3. It is not possible to precisely adjust the mouth opening degree of the patient and keep the mouth opening degree constant

In this patent, the user sets the maximum value of the mouth opening by adjusting the screw, but since it is manually operated and there is no numerical value for the mouth opening, it is difficult to accurately determine the size of the mouth opening; during use, the user presses for a long time to make the hand Muscle fatigue makes it difficult to maintain a fixed opening degree. The locking screw compresses the frame body to fix the opening degree by friction, but the friction force cannot fully meet the fixing requirements, and the effect is not good in actual use.

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