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A Robust Normally Closed Pneumatic Valve for Integrated Microfluidic Flow Control.
Micromachines (Basel)
December 2024
Zepto Life Technology Inc., 1000 Westgate Drive, St. Paul, MN 55114, USA.
Accurate fluid management in microfluidic-based point-of-care testing (POCT) devices is critical. Fluids must be gated and directed in precise sequences to facilitate desired biochemical reactions and signal detection. Pneumatic valves are widely utilized for fluid gating due to their flexibility and simplicity.
View Article and Find Full Text PDFDesign of an Adaptive Fixed-Time Fast Terminal Sliding Mode Controller for Multi-Link Robots Actuated by Pneumatic Artificial Muscles.
Biomimetics (Basel)
January 2025
School of Engineering, University of Kent, Canterbury CT2 7NZ, UK.
Pneumatic artificial muscles (PAMs) are flexible actuators that can be contracted or expanded by applying air pressure. They are used in robotics, prosthetics, and other applications requiring flexible and compliant actuation. PAMs are basically designed to mimic the function of biological muscles, providing a high force-to-weight ratio and smooth, lifelike movement.
View Article and Find Full Text PDFPig tongue soft robot mimicking intrinsic tongue muscle structure.
Front Robot AI
January 2025
School of Engineering, Institute of Science Tokyo, Tokyo, Japan.
Animal muscles have complex, three-dimensional structures with fibers oriented in various directions. The tongue, in particular, features a highly intricate muscular system composed of four intrinsic muscles and several types of extrinsic muscles, enabling flexible and diverse movements essential for feeding, swallowing, and speech production. Replicating these structures could lead to the development of multifunctional manipulators and advanced platforms for studying muscle-motion relationships.
View Article and Find Full Text PDFA lightweight prosthetic hand with 19-DOF dexterity and human-level functions.
Nat Commun
January 2025
Institute of Humanoid Robots, School of Engineering Science, University of Science and Technology of China, Hefei, 230026, China.
A human hand has 23-degree-of-freedom (DOF) dexterity for managing activities of daily living (ADLs). Current prosthetic hands, primarily driven by motors or pneumatic actuators, fall short in replicating human-level functions, primarily due to limited DOF. Here, we develop a lightweight prosthetic hand that possesses biomimetic 19-DOF dexterity by integrating 38 shape-memory alloy (SMA) actuators to precisely control five fingers and the wrist.
View Article and Find Full Text PDFEffects of Continuous Graduated Pneumatic Compression and Intermittent Pneumatic Compression on Lower Limb Hemodynamics for VTE Prophylaxis in Arthroplasty.
Orthop Surg
January 2025
Department of Orthopedics, Qilu Hospital of Shandong University, Jinan, China.
Objective: Intermittent pneumatic compression (IPC) is considered the standard of care for preventing venous thromboembolism (VTE) in the hospital setting. However, its widespread adoption after hospitalization has been limited due to its shortcomings in obstruction of venous valves and blood reflux. The objective of this study is to compare the effects of continuous graduated pneumatic compression (CGPC), a new device with a novel mechanism, and IPC on lower hemodynamics and the incidence of VTE in patients undergoing arthroplasty.
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