提出可精准测量内镜机器人轴向力的便携装置,降低手术风险。
EndoForce: Development of an Intuitive Axial Force Measurement Device for Endoscopic Robotic Systems
- 基于医生操作习惯设计,通过商用传感器实现力值感知
- 在直道与弯道模拟中均实现高精度力测量
- 结构紧凑易拆装,适合临床环境快速部署
机器人内镜系统提供直观操控并避免辐射暴露,是传统方法的有力替代。然而,机器人缺乏轴向力测量能力,可能导致结肠过度拉伸、穿孔或输尿管并发症。尽管已有多种方法被提出,但存在模型依赖、体积大、环境敏感等局限,限制了临床应用。本研究提出EndoForce,一种专为内镜机器人系统设计的直观且精确的轴向力测量装置。该装置借鉴医生在输尿管镜和胃肠道内镜操作中的插入动作,确保高精度力感知的同时,兼容临床环境。设备采用流线型设计,支持无菌罩的便捷安装与拆卸,并集成商用负载传感器,提升成本效益与实际应用可行性。通过模拟人体输尿管路径的测试平台进行物理实验,结果表明:无论路径为直线或弯曲,插入过程中产生的轴向力均能被准确测量。
原文摘要 · Abstract (English)
Robotic endoscopic systems provide intuitive control and eliminate radiation exposure, making them a promising alternative to conventional methods. However, the lack of axial force measurement from the robot remains a major challenge, as it can lead to excessive colonic elongation, perforation, or ureteral complications. Although various methods have been proposed in previous studies, limitations such as model dependency, bulkiness, and environmental sensitivity remain challenges that should be addressed before clinical application. In this study, we propose EndoForce, a device designed for intuitive and accurate axial force measurement in endoscopic robotic systems. Inspired by the insertion motion performed by medical doctors during ureteroscopy and gastrointestinal (GI) endoscopy, EndoForce ensures precise force measuring while maintaining compatibility with clinical environments. The device features a streamlined design, allowing for the easy attachment and detachment of a sterile cover, and incorporates a commercial load cell to enhance cost-effectiveness and facilitate practical implementation in real medical applications. To validate the effectiveness of the proposed EndoForce, physical experiments were performed using a testbed that simulates the ureter. We show that the axial force generated during insertion was measured with high accuracy, regardless of whether the pathway was straight or curved, in a testbed simulating the human ureter.
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