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Artificial intervertebral disc having a flexible wire mesh vertebral body contact element

机译:具有柔性金属丝网椎体接触元件的人工椎间盘

摘要

An artificial intervertebral disc having a pair of opposing plate members for seating against opposing vertebral bone surfaces, separated by a spring mechanism. The preferred spring mechanism is at least one spirally slotted belleville washer having radially extending grooves. The preferred attachment device for securing each plate member to a vertebral bone surface is a convex metal mesh that is laser welded at its perimeter to the plate member. The metal mesh deflects as necessary during insertion of the artificial intervertebral disc between vertebral bodies, and, once the artificial intervertebral disc is seated between the vertebral bodies, deforms as necessary under anatomical loads to reshape itself to the concave surface of the vertebral endplate. The metal mesh therefore provides superior gripping and holding strength upon initial implantation and an osteoconductive surface through which the vertebral bone may ultimately grow.
机译:一种人造椎间盘,其具有一对相对的板构件,用于通过弹簧机构分开以抵靠在相对的椎骨表面上。优选的弹簧机构是至少一个具有径向延伸的凹槽的螺旋开槽的贝尔维尔垫圈。用于将每个板构件固定至椎骨表面的优选附接装置是凸形金属网,该凸形金属网在其周边处激光焊接至板构件。在将人工椎间盘插入椎体之间的过程中,金属网会发生必要的挠曲,并且一旦将人工椎间盘置于椎体之间,则在解剖负荷下会根据需要变形以使其自身变形为椎骨终板的凹面。因此,金属网在初始植入时提供了优异的抓握和保持强度,并在骨传导性表面上可以最终生长出椎骨。

著录项

  • 公开/公告号US2003069642A1

    专利类型

  • 公开/公告日2003-04-10

    原文格式PDF

  • 申请/专利权人 RALPH JAMES D.;TATAR STEPHEN;

    申请/专利号US20020140153

  • 发明设计人 JAMES D. RALPH;STEPHEN TATAR;

    申请日2002-05-07

  • 分类号A61F2/44;

  • 国家 US

  • 入库时间 2022-08-22 00:07:39

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