发明申请
US20070078436A1 Balloon assisted apparatus and method for accessing an intervertebral disc
审中-公开
用于进入椎间盘的气囊辅助装置和方法
- 专利标题: Balloon assisted apparatus and method for accessing an intervertebral disc
- 专利标题(中): 用于进入椎间盘的气囊辅助装置和方法
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申请号: US11250617申请日: 2005-10-17
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公开(公告)号: US20070078436A1公开(公告)日: 2007-04-05
- 发明人: Andrea Leung , Hugues Malandain , Erika Palmer , Paul Sand
- 申请人: Andrea Leung , Hugues Malandain , Erika Palmer , Paul Sand
- 主分类号: A61M31/00
- IPC分类号: A61M31/00
摘要:
An apparatus includes a projection having a sharpened end portion configured to be inserted through an annulus of an intervertebral disc to define a distracted volume in the annulus. An expandable member is coupled to the projection and defines a longitudinal axis. The expandable member is configured to be expanded from a collapsed configuration to an expanded configuration in a direction substantially perpendicular to the longitudinal axis when at least a portion of the expandable member is disposed within the distracted volume of the annulus of the intervertebral disc. When the expandable member expands, it defines an expanded volume and defines a cross-sectional perimeter while in the expanded configuration. A cannula is configured to be at least partially inserted into the expanded volume. The cannula defines a cross-sectional outer perimeter having no portion extending outside of the cross-sectional perimeter of the expandable member while in its expanded configuration.