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The effect of gravity on hand spatio-temporal kinematic features during functional movements.
PLoS One
December 2024
Rehab Technologies Lab, Istituto Italiano di Tecnologia, Genoa, Italy.
Understanding the impact of gravity on daily upper-limb movements is crucial for comprehending upper-limb impairments. This study investigates the relationship between gravitational force and upper-limb mobility by analyzing hand trajectories from 24 healthy subjects performing nine pick-and-place tasks, captured using a motion capture system. The results reveal significant differences in motor behavior in terms of planning, smoothness, efficiency, and accuracy when movements are performed against or with gravity.
View Article and Find Full Text PDFPosition-Constrained Calibration Compensation for Hand-Eye Calibration in Industrial Robots.
Sensors (Basel)
November 2024
Department of Mechanical Engineering, Tsinghua University, Beijing 100084, China.
The hand-eye calibration of laser profilers and industrial robots is a critical component of the laser vision system in welding applications. To improve calibration accuracy and efficiency, this study proposes a position-constrained calibration compensation algorithm aimed at optimizing the hand-eye transformation matrix. Initially, the laser profiler is mounted on the robot and used to scan a standard sphere from various poses to obtain the theoretical center coordinates of the sphere, which are then utilized to compute the hand-eye transformation matrix.
View Article and Find Full Text PDFA Systematic Review of the Learning Curves of Novices and Trainees to Achieve Proficiency in Laparoscopic Skills: Virtual Reality Simulator Versus Box Trainer.
Cureus
November 2024
Stroke, Whiston Hospital, Liverpool, GBR.
Laparoscopic surgery, established in the 1980s, has become a primary treatment method across various surgical specialities due to its advantages over open surgery, including shorter recovery times and fewer complications. Mastery of laparoscopic skills is essential for novice and junior trainees, who must develop hand-eye coordination, depth perception, and instrument handling. This systematic review examines the learning curves of novices using box trainers compared to those using virtual reality (VR) simulators to attain proficiency in laparoscopic skills.
View Article and Find Full Text PDFThe effect of smart glasses combined with ultrasound on radial arterial catheterization: a randomized controlled trial.
BMC Anesthesiol
November 2024
Department of Anesthesiology, West China Hospital of Sichuan University, Chengdu, 610041, Sichuan, P. R. China.
Article Synopsis
- The study investigates the effectiveness of integrating smart glasses with ultrasound technology in enhancing the success rate of radial artery catheterization compared to traditional methods in adults.
- In a randomized controlled trial involving 222 patients, the smart glasses group achieved a significantly higher first puncture success rate (88.3%) than the control group (72.1%).
- Additionally, the smart glasses group showed improved hand-eye coordination and greater operator satisfaction, indicating their potential to improve procedural outcomes in clinical settings.
A universal calibration framework for mixed-reality assisted surgery.
Comput Methods Programs Biomed
February 2025
Surgical Performance Enhancement and Robotics (SuPER) Centre, Department of Surgery, McGill University, 1650 Cedar Avenue, Montreal QC H3G 1A4, Canada. Electronic address:
Background: Mixed-reality-assisted surgery has become increasingly prominent, offering real-time 3D visualization of target anatomy such as tumors. These systems facilitate translating preoperative 3D surgical plans to the patient's body intraoperatively and allow for interactive modifications based on the patient's real-time conditions. However, achieving sub-millimetre accuracy in mixed-reality (MR) visualization and interaction is crucial to mitigate device-related risks and enhance surgical precision.
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