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Jaw bone tractor

A technology of retractors and jaws, applied in the field of medical equipment, can solve the problems of patient pain, length adjustment rod, inconvenient use, etc.

Active Publication Date: 2009-01-14
沈国芳 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above-mentioned mandibular distractor has the advantages of simple structure and convenient fixing and adjustment, but the adjusting rod in the mandibular distractor is relatively long, and the adjusting part of the adjusting rod on it is only arranged on one side of the mandibular distractor, so it only It is suitable for adjusting the relative length in one direction. The adjustment direction should be opposite to the direction of the gap formed by the jaws to facilitate adjustment. Therefore, there is only one installation method, which is quite inconvenient to use.
Another point is that the above-mentioned jaw retractor is in a straight shape, exposed on the cheek during installation, and is easily subject to accidental collision, resulting in interruption of treatment, causing pain to the patient, and the exposure is not beautiful, seriously affecting the normal life of the patient

Method used

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Embodiment Construction

[0029] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0030] Such as Figure 1~2 Shown is the first embodiment of the present invention, a jaw retractor, including an adjustment rod 1 and a movable traction frame 2, the adjustment rod 1 is in the shape of a strip with a certain thickness, and the adjustment rod 1 is in the shape of a human jaw. The arc that matches the shape of the bone makes the lower surface of the adjustment rod 1 conform to the jawbone. Due to individual differences, we can customize the adjustment rod 1 with different curved arcs according to different patients, so as to play a role in working with each patient. For the purpose of matching the shape of the jaw bone, the entire upper surface of the adjustment rod 1 is provided with a row of helical teeth 11 with the same inclination direction, so the overall shape of the adjustment rod 1 is similar to the shape of the rack, a...

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Abstract

The present invention relates to one kind of jowl tractor, which includes one regulating rod with skewed teeth in the surface and fixed locating boards on its two ends, and one movable traction frame around the regulating rod for back and forth sliding. The movable traction frame has one movable locating board, one screw capable of rotating on the movable traction frame and meshed to the skewed teeth. The regulating rod may be designed in arced shape fitting the jowl. The present invention has the advantages of simple structure, convenient fixing and regulating, wide and accurate regulating range and capacity of making the patient to grow new bone fitting the original jowl.

Description

technical field [0001] The invention belongs to the technical field of medical instruments used in oral and maxillofacial surgery and plastic surgery, and in particular relates to a jaw retractor. Background technique [0002] Mandibular retractors are widely used in oral and maxillofacial surgery and plastic surgery. The technical principle of the retractor can be summarized as follows: After the mandible is completely or partially cut off, the broken ends of the mandible are gradually stretched by external force to form The mandible can be filled with the traction force to induce the osteogenic ability of the jaw bone to continuously form new bone to fill the gap, so as to achieve the purpose of lengthening the mandible. [0003] There are also many patents related to jaw retractors, such as the Chinese utility model patent "A Jaw Pull Extender" whose patent number is ZL95200175.6 (notification number is CN2205709Y) discloses a kind of such structure, a kind of jaw Bone t...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A61B17/66A61B17/56
Inventor 沈国芳王旭东王兴沈国成方葵川洪碧波
Owner 沈国芳
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