Novel mandibular bone transport reconstruction plate

描述：头颈部硬组织和软组织的手术切除或高冲击创伤可能导致主要组织缺损。下颌骨的重建通常涉及骨骼，牙龈和牙齿。当前的下颌骨牵引装置与重建板组合使用，但是当重建板采用颌的轮廓时，牵引装置具有线性矢量。这些器械的牵引距离也有限，产生的直骨节段较短，因此无法通过一次手术适应较大的缺损。组合装置的尺寸使得不可能移动齿状骨段。口外器械既可作为外固定支架，又可作为骨转移牵引器械，可用于重建下颌副交感和颏部。然而，新形成的下颌骨由于软组织压力而后缩，并且未实现下颌骨的正常曲率。本申请的目的是构建和测试口内下颌骨牵引装置的原型，该装置将用作组合重建板和骨运输装置。该器械将能够长距离运输齿状骨段，并防止软组织造成的形状抑制。该器械的目的是在手术切除后立即重建下颌骨，无需植骨或二次重建。该器械将能够恢复原始下颌骨的相同机械完整性和形状，而不会增加手术的难度、持续时间或并发症。该器械的关键特征是其既可用作刚性下颌骨重建板，又可用作骨转移牵引器械。该装置不受骨间隙的大小、形状或位置的限制，并且由于该装置的位置较低;运输盘可以安全地携带有活力的牙齿，而不会在固定过程中损伤牙根。“检查点截骨”技术将首次使恢复正常曲率或原始下颌骨成为可能，并保留原始的下面部尺寸，因为软组织在运输盘上施加的牵引力被刚性屏蔽。运输板。

DESCRIPTION: Surgical excision of hard and soft tissues of the head and neck or high impact trauma can lead to lead to major tissue deficits. Reconstruction of the lower jaw typically involves bone, gingiva, and teeth. Current mandibular distraction devices are used in combination with reconstruction plates, but while the reconstruction plates take the contour of the jaw, the distraction devices have a linear vector. The devices also have a limited distraction distance, producing short segments of straight bone and so cannot accommodate large deficits with a single procedure. The size of the combined apparatus makes it impossible to move dentate bone segments. Extra-oral devices function both as external fixator and bone transport distraction devices, with which it is possible to re-build the mandibular parasymphysis and chin. Nevertheless, the newly formed mandible is retruded due to soft tissue pressure and normal curvature of the mandible is not achieved. The objective of this application is to build and test prototypes of an intra-oral mandibular distraction device that will serve as a combined reconstruction plate and bone-transport device. This device will enable transport of dentate bone segments over large distances and prevent the inhibitions of form created by the soft tissues. The purpose of this device is to allow immediate reconstruction of mandibular bone following surgical excision, eliminating the need for bone grafting or secondary reconstruction. The device will enable regaining the same mechanical integrity and shape of the original mandible, without adding to the difficulty, duration, or complication of surgeries. Critical features of the device are that it functions both as a rigid mandibular reconstruction plate and a bone transport distraction device. The device is not limited by the size, shape, or location of the bone gap and because of the low position of the device; the transport disc can safely carry viable teeth without injuring the roots during fixation. The "check-point osteotomy" technique will make it possible for the first time to regain the normal curvature or the original mandible, and preserve the original lower facial dimensions as the traction force exerted by the soft tissue over the transport disc is rigidly shielded by the transport plate.