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相关概念视频

Endoscopic Procedures III: Video Capsule Endoscopy01:28

Endoscopic Procedures III: Video Capsule Endoscopy

Capsule endoscopy, or wireless or video capsule endoscopy, is a diagnostic procedure for examining the entire gastrointestinal tract. Patients swallow a capsule about the size of a vitamin tablet. The capsule is equipped with a transmitter, a battery, an LED light source, and a color video camera to capture images throughout the gastrointestinal tract. This procedure is particularly useful for diagnosing conditions such as Crohn's disease, ulcerative colitis, tumors, polyps, ulcers, unexplained...

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相关实验视频

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Design and Fabrication of an Elastomeric Unit for Soft Modular Robots in Minimally Invasive Surgery
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基于形状记忆合金执行器的腹腔镜外科手术可偏向的视频摄像机系统.

Malte Pietsch1, Konrad Henkel1, René Körbitz1

  • 1TUD Dresden University of Technology, Chair of Microsystems, Dresden, SN, Germany.

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|April 2, 2025
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概括

形状记忆合金 (SMA) 执行器为控制灵活的腹腔镜仪器提供了一种轻量级,具有成本效益的解决方案. 这项研究展示了一种具有电子偏移控制的新型摄像系统,实现了超过178°的运动和长时间的运行寿命.

关键词:
内镜检查是指内镜检查.laparoscopic 手术 拉巴洛斯科普手术是用眼镜进行的手术.医疗机器人 医疗机器人形状记忆合金的合金智能材料是一种智能材料.

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科学领域:

  • 医疗器械 医疗器械
  • 机器人技术 机器人技术 机器人技术
  • 材料科学 材料科学 材料科学

背景情况:

  • 腹腔镜仪器缺乏偏移性,限制了在微创手术中的可用性.
  • 当前的柔性尖端设备通常很重,很昂贵,并且依赖于手动控制.
  • 形状记忆合金 (SMA) 执行器由于其轻量级和成本效益,是有希望的替代品.

研究的目的:

  • 开发和评估一个带有电子偏移控制的腹腔镜摄像机,使用SMA执行器进行电子偏移控制.
  • 为了证明SMA执行器的可行性,用于对内镜仪器进行通用控制.
  • 为了研究SMA驱动摄像系统的性能和耐用性.

主要方法:

  • 设计了一个带有两度自由度倾斜机制的腹腔镜摄像机,使用尼醇关节.
  • 使用了一个带有四个SMA线和一个专门的紧张机制的执行器单元.
  • 通过使用三个组装单元和自动测量系统来描述系统功能.
  • 研究了持续温度刺激对设备参数的影响.

主要成果:

  • 每个自由度达到超过178°的偏斜角度.
  • 在高达0.5赫兹的操作频率下显示出合适的偏移行为.
  • 单元保持了超过1200个启动周期或4.4小时的连续运行功能.

结论:

  • SMA执行器是可行的,用于电气控制柔性尖端腹腔镜仪器.
  • 开发的摄像头系统显示出有希望的性能和耐用性.
  • 温度控制是未来开发和优化的一个关键挑战.