Skeleton Self-Locking Medical Opener

Abstract

The invention relates to medical equipment for stomatological departments and oral maxillofacial surgery, in particular to a skeleton self-locking medical mouth gag which comprises a lower supporting and closing portion and an upper supporting and closing portion.A shaft seat and a transmission case are respectively arranged at two ends of the lower supporting and closing portion, and slide bars are mounted between the shaft seat and the transmission case via bearings; external threads are arranged in middle sections of the slide bars positioned between the shaft seat and the transmission case, and sliders fittingly sleeve the middle sections of the slide bars in a threaded manner and are hinged to the lower ends of supporting rods; a strip-shaped groove is formed in the lower end of the upper supporting and closing portion, a plurality of hanging rings are arranged in the groove, and the upper ends of the supporting rods are mounted in the hanging rings via rotary shafts; driving mechanisms for driving the slide bars to rotate are arranged in the transmission case.The skeleton self-locking medical mouth gag has the advantages that the skeleton self-locking medical mouth gag which is a spreader is compact in structure, convenient to use, reasonable in stress and adaptive to individual difference, and patients rarely suffer.

Description

Technical field [0001] The invention relates to a medical instrument for stomatology and maxillofacial surgery, in particular to a skeleton self-locking medical mouthpiece. Background technique [0002] There are two protrusions at the end of the mandibular branch of the mandible. The rear part is called the condyle. It consists of the enlarged mandibular head and the mandibular neck under the head. The mandibular condyle is oval, with long inner and outer diameters, and short anterior and posterior diameters. From the side view, there is a transverse crest that divides the top of the condyle into two inclined planes. The anterior slope is small, it is a functional surface, and is the weight-bearing area of ​​the joint; the mandibular condyle is a prone area for jaw fractures. It can be a direct fracture caused by a direct hit to the condyle, or a mandibular chin or body. Indirect fractures caused by blows are easily missed clinically. The mandibular condyle is the weakest par...

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

In addition, in oral surgery such as dentistry, it is often necessary to passively open the patient's oral cavity mechanically to facilitate the operation. However, the existing oral retractors are generally large in size, and after the expansion, a large handle is left outside the patient's oral cavity. It causes psychological burden, and it is not convenient for further operation; lack of necessary locking mechanism, the opening mechanism is easy to loosen

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