To analyze the structural characteristics of a human hand, data collection gloves were worn for typical grasping tasks. The hand manipulation characteristics, finger end pressure, and finger joint bending angle were obtained via an experiment based on the Feix grasping spectrum. Twelve types of tendon rope transmission paths were designed under the N + 1 type tendon drive mode, and the motion performance of these 12 types of paths applied to tendon-driven fingers was evaluated based on the evaluation metric. The experiment shows that the designed tendon path (d) has a good control effect on the fluctuations of tendon tension (within 0.25 N), the tendon path (e) has the best control effect on the joint angle of the tendon-driven finger, and the tendon path (l) has the best effect on reducing the friction between the tendon and the pulley. The obtained tendon-driven finger motion performance model based on 12 types of tendon paths is a good reference value for subsequent tendon-driven finger structure design and control strategies.
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http://www.ncbi.nlm.nih.gov/pmc/articles/PMC11201696 | PMC |
http://dx.doi.org/10.3390/biomimetics9060370 | DOI Listing |
World Neurosurg
January 2025
Xuanwu Hospital, Capital Medical University, Beijing, China; Samii Clinial Neuroanatomy Research and Education Center of Xuanwu Hospital, Beijing, China. Electronic address:
Background: The occipital artery (OA) is an important donor artery for intracranial and extracranial bypass surgery, but its path is tortuous, making it difficult to harvest. Part of the traditional intermuscular OA is not covered by muscle and is easily damaged during surgery. Currently, there are few reports on how to protect this segment of the OA.
View Article and Find Full Text PDFAdv Mater
January 2025
Department of Mechanical and Aerospace Engineering, Cornell University, 124 Hoy Road, Ithaca, NY, 14850, USA.
The adaptable, modular structure of muscles, combined with their confluent energy storage allows for numerous architectures found in nature: trunks, tongues, and tentacles to name some more complex ones. To provide an artificial analog to this biological soft muscle, a self-powered, soft hydrostat actuator is presented. As an example of how to use these modules, a worm robot is assembled where the near totality of the body stores electrochemical potential.
View Article and Find Full Text PDFJ Shoulder Elbow Surg
December 2024
Roth | McFarlane Hand and Upper Limb Centre, St Joseph's Health Care, London, Canada; Department of Surgery, Western University, London, Canada. Electronic address:
Background: Anterior shoulder pain after reverse shoulder arthroplasty (RSA) is not uncommon and may be due to humeral impingement against the conjoint tendon during internal rotation (IR). It is unknown what effect different implant designs and configurations have on conjoint tendon impingement. The purpose of this study was to investigate the influence of several RSA implant design parameters on conjoint tendon impingement during IR.
View Article and Find Full Text PDFRobotica
August 2024
Department of Mechanical Engineering, University of Hawaii at Manoa.
Prostate cancer is the second most common malignancy in American men. High-dose-rate brachytherapy is a popular treatment technique in which a large, localized radiation dose is used to kill cancer. Utilization of curvilinear catheter implantation inside the prostate gland to provide access channels to host the radiation source has shown superiority in terms of improved dosimetric constraints compared to straight needles.
View Article and Find Full Text PDFJBJS Essent Surg Tech
November 2024
Department of Orthopaedics Foot and Ankle Surgery, The Ohio State University, Columbus, Ohio.
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