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相关概念视频

Equipments Used To Measure Blood Pressure01:30

Equipments Used To Measure Blood Pressure

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Direct Method
This invasive approach involves cannulating a peripheral artery. During each cardiac contraction, pressure generates mechanical motion within the catheter, transmitted through rigid, fluid-filled tubing to a transducer. This transducer converts mechanical motion into electrical signals displayed as waveforms on a monitor. An automatic flushing system prevents blood backflow. Due to the potential risk of unexpected arterial blood loss, this method is primarily used in intensive...
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Autoregulation of Blood Flow01:17

Autoregulation of Blood Flow

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Autoregulation mechanisms are characterized by their inherent capacity for self-regulation without necessitating specific nervous stimulation or endocrine control. These mechanisms facilitate the adjustment of blood flow and, therefore, perfusion specific to each tissue region. This self-regulation encompasses chemical signals and myogenic controls.
Chemical Signaling in Autoregulation
Chemical signaling operates at the precapillary sphincter level, inciting either contraction or relaxation....
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相关实验视频

Updated: May 6, 2026

Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures
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Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures

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多部分磁性软机器人与多机器人导航系统用于血管干预干预

Zhengyang Li1, Qingsong Xu1

  • 1Department of Electromechanical Engineering, Faculty of Science and Technology, University of Macau, Macau, China.

Cyborg and bionic systems (Washington, D.C.)
|November 29, 2024
PubMed
概括

这项研究介绍了一种用于微创心血管手术的新型磁性软机器人. 该机器人以超声波和磁场为指导,在复杂的血管环境中实现了精确的导航.

科学领域:

  • 机器人技术 机器人技术 机器人技术
  • 医疗器械 医疗器械
  • 心血管外科心血管外科

背景情况:

  • 最少侵入性心血管外科手术需要先进的工具来准确导航.
  • 磁性软机器人为复杂的血管内干预提供了潜力.
  • 现有的系统可能缺乏多分叉场景所需的灵巧性和控制能力.

研究的目的:

  • 介绍一个新的多段磁软机器人 (MS-MSR) 的分析建模和控制.
  • 为了实现精确的血管内干预,使用磁性启动和超声波指导.
  • 开发一个协作多机器人导航系统 (CMNS) 以提高机动性.

主要方法:

  • 优化的Cosserat棒模型用于MS-MSR的动力学和动态分析.
  • 不同质的磁场产生用于复杂的方向盘.
  • 身体外超声波导航用于闭环尖端跟踪.
  • 在CMNS中用于多目标运动同步的二次编程.

主要成果:

  • 在多分叉血管内环境中成功导航MS-MSR.
  • 实现了低形状建模错误 () 和尖端错误 ().
  • 通过超声波指导证明了有效的闭环控制和多机器人协作.

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相关实验视频

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Remote Magnetic Navigation for Accurate, Real-time Catheter Positioning and Ablation in Cardiac Electrophysiology Procedures

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A Training and Testing System for Performing Vascular Reconstruction In Vitro
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A Training and Testing System for Performing Vascular Reconstruction In Vitro

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结论:

  • 拟议的MS-MSR和CMNS对超声波引导的血管内干预是有效的.
  • 该系统在复杂的血管几何形状中显示出高精度和适应性.
  • 这项技术对推进微创心脏手术具有重大前景.