• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Computer-aided navigation system for arthroscopic hip surgery.
【24h】

Computer-aided navigation system for arthroscopic hip surgery.

机译：用于关节镜下髋关节手术的计算机辅助导航系统。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

While arthroscopic surgery has many advantages over traditional surgery, this minimally invasive technique is not often applied to the hip joint. Reasons for this include the complexity of navigating within the joint, the difficulty of correctly placing portal incisions without damaging surrounding neurovascular structures, and the deep, tight geometry of the hip joint. This thesis outlines completed work on a computer-aided navigation system to address the challenges of arthroscopic hip surgery. Our computer-aided system helps to navigate in the hip joint during arthroscopy by: (1) tracking the tool position with a linkage of encoders, and (2) displaying 3D computer graphics to indicate the tool position relative to the patient anatomy.; The encoder linkage for position tracking was created as a kinematically redundant linkage, with eight degrees of freedom, for increased flexibility. An initial linkage prototype was created and tested. Based on the testing results, a second linkage was created with improved accuracy performance. Using the encoder linkage position information, the visual interface generates images of the patient's hip joint and the surgical tools in order to supplement the restricted view from the arthroscopic camera.; A study of user performance was completed to verify the effectiveness of this computer-aided system for hip arthroscopy. Ten participants completed a basic navigation task with and without the assistance of the computer-aided system and determined that the computer-aided system could reduce task completion time by 38% and tool-path length by 72%. A decrease in task time translates to a faster surgical procedure, and a decrease in path length could decrease patient tissue damage.; A study of the tracking error of the encoder linkage was performed. Two and three-dimensional simulations of the linkage were created, including error in the rotational joints. Multiple linkage endpoints were averaged to obtain a lower position error. Averaging and curve fitting techniques were then applied to the physical encoder linkage for error testing. An error reduction was seen for each numerical technique, with the largest reduction being a 45% decrease in tracking error with a linear curve fitting technique.; Finally, the visual interface was improved to consider the spatial challenges of navigation. In order to reduce the cognitive load while using our system, we have created a global map of the hip joint which displays the viewing direction of the other display windows. In this way, the multiple views of patient anatomy are organized to provide optimal navigation information to the user.
机译：尽管关节镜手术比传统手术具有许多优势，但这种微创技术并不经常应用于髋关节。原因包括在关节内导航的复杂性，在不损坏周围神经血管结构的情况下正确放置门口切口的难度以及髋关节深而紧密的几何形状。本文概述了在计算机辅助导航系统上完成的工作，以应对关节镜下髋关节手术的挑战。我们的计算机辅助系统可通过以下方式帮助关节镜检查时在髋关节中导航：（1）通过编码器的链接跟踪工具的位置；（2）显示3D计算机图形以指示工具相对于患者解剖结构的位置。用于位置跟踪的编码器链接创建为运动学上的冗余链接，具有八个自由度，以提高灵活性。最初的链接原型已创建并经过测试。根据测试结果，创建了具有改进的精度性能的第二个链接。使用编码器链接位置信息，可视界面生成患者髋关节和手术工具的图像，以补充关节镜摄像机的受限视野。用户性能研究已完成，以验证该计算机辅助系统用于髋关节镜检查的有效性。十名参与者在有或没有计算机辅助系统的帮助下完成了基本导航任务，并确定该计算机辅助系统可以将任务完成时间减少38％，将工具路径长度减少72％。任务时间的减少转化为更快的手术过程，路径长度的减少可以减少患者组织的损伤。对编码器链接的跟踪误差进行了研究。创建了连杆的二维和三维模拟，包括旋转接头的误差。对多个连接端点求平均值，以获得较低的位置误差。然后将平均和曲线拟合技术应用于物理编码器链接以进行错误测试。每种数值技术的误差都减小了，最大的减小是线性曲线拟合技术使跟踪误差减小了45％。最后，改进了可视界面，以考虑导航的空间挑战。为了减轻使用我们系统时的认知负担，我们创建了髋关节的全局图，该图显示了其他显示窗口的观看方向。以这种方式，组织了患者解剖结构的多个视图以向用户提供最佳的导航信息。

著录项

  • 作者

    Monahan, Emily.;

  • 作者单位

    Carnegie Mellon University.;

  • 授予单位 Carnegie Mellon University.;
  • 学科 Engineering Biomedical.; Engineering Mechanical.; Health Sciences Medicine and Surgery.
  • 学位 Ph.D.
  • 年度 2007
  • 页码 71 p.
  • 总页数 71
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号