概括
这项研究引入了一种新型的光纤探头,它结合了光学连贯断层扫描 (OCT) 用于测距和光纤布拉格格 (FBG) 用于力传感. 这一集成系统可为微创手术提供精确的实时反.
科学领域:
- 生物医学工程 生物医学工程
- 光学传感传感器是什么?
- 最少侵入性的手术
背景情况:
- 最少侵入性干预需要对距离和力度进行精确的实时反.
- 现有的探头往往缺乏集成的传感能力,限制了它们在微妙的程序中的应用.
- 缩小和内在对齐对于有效的内镜工具至关重要.
研究的目的:
- 开发一个紧的同轴纤维探头,集成光学连贯性断层扫描 (OCT) 测距和纤维布拉格格子 (FBG) 力传感.
- 为了实现同步的距离-力反,在最小侵入性干预期间加强控制.
- 为了证明探针在内镜触摸和内注射程序中的实用性.
主要方法:
- 一个同轴纤维探测器设计,采用单模纤维和一个短的无核和分级索引纤维段.
- 使用OCT用于精确的距离测量和FBG用于力传感.
- 开发一个弱聚焦的光束,以扩展焦点深度,同时保持一个微型探测器设计.
主要成果:
- 在内镜触摸过程中,探头成功地从周围组织中区分了硬的内含物.
- 接触和穿孔的同时检测在上腺注射模型中实现,通过距离和力的变化证明了这一点.
- 综合系统展示了同步的距离-力反能力.
结论:
- 开发的同轴纤维探测器为集成光学传感提供了一个可扩展的平台.
- 这项技术对机器人微手术和其他精确操纵任务具有重大潜力.
- 探针的微型设计和同步反提高了最小侵入性干预的安全性和有效性.
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