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发明公开
CN1976650A 修复用椎间盘 无效 - 撤回

修复用椎间盘
摘要：
装置(10)包括一盘修复物或人工盘(12)，该盘修复物或人工盘(12)具有一上板(14)和一下板(16)。应该理解，该盘是一关节连接的关节，构造成用于设置于在一人体脊椎中的邻近椎骨本体之间的一椎间间隔内，通过提供在椎骨本体之间的相对弯曲和旋转运动来维持或恢复运动。一凸形突起物(26)延伸自下板，并接合一关节表面，该关节表面由在上板中形成的一凹入凹处(28)所限定。一柔性结构(30)从上板垂直延伸至下板。该结构被确定尺寸，从而当盘在其中间位置时，它是放松的且不承受拉力。在上板枢转至某个预先确定的角度之后，结构被拉紧，从而它开始抵抗或限制弯曲。
摘要（英）：

The device (10) includes a disc prothesis or artificial disc (12) having an upper plate (14) and a lower plate (16) . It is understood that the disc is an articulating joint, configured for disposition within an intervertebral space between adjacent berterbral bodies in a human spine, that maintains or restores motion by providing relative bending and rotational motion between the vertebral bodies. A convex-shaped projection (26) extends from the lower plate and engages an articular surface defined by a concave recess (28) formed in the upper plate. A flexible construct (30) extends vertically from the upper plate to the lower plate. The construct is sized so that it is relaxed and not undergoing tension when the disc is in its neutral position. After the upper plate pivots to a certain predermined degree, the construct is tensioned so that it begins to resist or restrict this bending.

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