| 摘要 |
An orthodontic bite jumping device for use in the treatment of malocclusion or overbite, having a telescoping limiting assembly to prevent an inner cylindrical member from being completely pulled-out of an outer tube as a patient opens their mouth very wide. The outer tube is adapted to be mounted to an upper jaw or maxilla and the inner cylindrical member is concentrically disposed in the outer tube and adapted to be mounted to a lower jaw or mandible. The telescoping limiting assembly limits the distance the inner cylindrical member can slide out of the outer tube via a pair of notches and an L-shaped resilient lever arm. The first notch is formed in close proximity to a free end of the outer tube. The second notch is formed in close proximity to a free end of the inner cylindrical member and has a rear blocking surface and a forward descending slope or ramped surface to a bottom of the rear blocking surface. In operation, the L-shaped resilient lever arm tracks the forward descending slope or ramped surface in and out of the second notch.
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