Individualized upper jaw alveolar bone arc distraction appliance
A technology of alveolar bone and retractor, applied in dentistry, dental tools, orthodontics, etc., can solve problems such as difficulty in fitting patients and reconstruction of new alveolar bone, and achieve the effect of simplifying force operation
Inactive Publication Date: 2009-11-04
STOMATOLOGICAL HOSPITAL NO 4 ARMY SURGEON UNIV PLA
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- Abstract
- Description
- Claims
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Problems solved by technology
The existing distraction osteogenesis device is non-individually designed, it is difficult to be suitable for each patient, and it is even more difficult to achieve the purpose of reconstructing the new alveolar bone at the original alveolar bone position through alveolar bone distraction osteogenesis
Method used
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Embodiment Construction
[0011] The present invention will be described in further detail below in conjunction with the accompanying drawings.
[0012] see figure 1 , the present invention comprises a guide rail 4 having the same radian as the defective original alveolar bone and a protruding rod 9 integrally connected with the guide rail, a first retaining plate 1 and a second retaining plate 3 are arranged at one end of the guide rail 4 With the retaining arm 8 arranged at the other end of the guide rail 4, the two retaining plates can fix the distractor on the remaining maxilla. A mobile retaining plate 2 that can slide along the guide rail is also arranged between the above two retaining plates. A traction device 6 is provided on the extension rod 9, and a groove for placing a traction wire 5 is provided on the convex surface of the guide rail 4. One end of the traction wire is connected with the mobile retaining plate 2, and the other end is connected with the traction device.
[0013] see fi...
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Abstract
The invention relates to an individualized upper jaw alveolar bone arc distraction appliance, which comprises a guide rail having same radian with a defective original alveolar bone and an extension bar integrally connected with the guide rail, wherein two ends of the guide rail are provided with a first retention plate and a second retention plate respectively; the second retention plate is connected on the guide rail through a retention arm; a movable retention plate capable of sliding along the guide rail is arranged between the first retention plate and the second retention plate; the extension bar is fixed with a distraction apparatus; the convex side of the guide rail is provided with a groove for placing a distraction wire; and one end of the distraction wire is connected with the movable retention plate, while the other end is connected with the distraction apparatus. The guide rail is designed according to the radian of the defective original alveolar bone to ensure that the movable retention plate is under distraction along the radian of the original alveolar bone, namely the distraction gap accords with the position of the original alveolar bone, and when the distraction gap is ossified, a new bone is positioned at the position of the original alveolar bone. The distraction apparatus adopts the matching of a ratchet wheel and a pawl so that the distraction process only moves forward but not falls back, one time of distraction can be finished by only rotating the ratchet wheel, and stress application operations are simplified.
Description
technical field [0001] The invention belongs to medical instruments, in particular to an individualized maxillary alveolar bone arc stretcher. Background technique [0002] Existing maxillary distractors are mainly external linear distractors, which are mostly used to move the maxilla forward after Le Fort osteotomy, and to correct the depression deformity of the middle part of the face or hemifacial atrophy. There are also retractors with teeth as anchorage, which are mostly used to treat hard palate defects to solve the problem of velopharyngeal insufficiency. After the bearing area of the zygomatic bone was discovered, a distraction device for the zygomatic bone appeared, and the bony pillar structure was reconstructed on the side of the maxillary defect through zygomatic distraction osteogenesis. In the study of alveolar distraction osteogenesis for maxillary defect reconstruction, the finished linear distractor was used to reconstruct the maxillary defect only includ...
Claims
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Login to View More IPC IPC(8): A61C3/00A61C19/06
Inventor 赵铱民冯志宏赵晋龙陈江飞周丽斌董岩
Owner STOMATOLOGICAL HOSPITAL NO 4 ARMY SURGEON UNIV PLA