Jove
Visualize
Contact Us
JoVE
x logofacebook logolinkedin logoyoutube logo
ABOUT JoVE
OverviewLeadershipBlogJoVE Help Center
AUTHORS
Publishing ProcessEditorial BoardScope & PoliciesPeer ReviewFAQSubmit
LIBRARIANS
TestimonialsSubscriptionsAccessResourcesLibrary Advisory BoardFAQ
RESEARCH
JoVE JournalMethods CollectionsJoVE Encyclopedia of ExperimentsArchive
EDUCATION
JoVE CoreJoVE BusinessJoVE Science EducationJoVE Lab ManualFaculty Resource CenterFaculty Site
Terms & Conditions of Use
Privacy Policy
Policies

Related Concept Videos

Mechanical Efficiency of Real Machines01:14

Mechanical Efficiency of Real Machines

The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...
Simplification of a Force and Couple System: II01:23

Simplification of a Force and Couple System: II

In a three-dimensional system, multiple forces can act on an object. These forces can be combined into a single equivalent force, known as the resultant force. Similarly, the moments generated by these forces can be combined into a single equivalent moment, the resultant couple moment. In certain situations, these two entities may not be mutually perpendicular, meaning they do not have a 90-degree angle between them. This unique condition requires a deeper understanding of the interplay between...
Machines01:19

Machines

Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. One example of a machine is the cutting plier, which is used to cut wires by applying forces to its handles. When equal and opposite forces are exerted on the handles of the cutting plier, they cause the cutting edges to come together and apply equal and opposite reaction forces on the wire, which are greater than the applied forces.
A free-body diagram of the...
Machines: Problem Solving I01:22

Machines: Problem Solving I

A toggle clamp is a mechanical device commonly used for holding and clamping objects in various applications, such as woodworking, metalworking, and assembly operations. Consider a toggle clamp subjected to a force of 200 N at the handle. The vertical clamping force can be calculated, provided the dimensions of the toggle clamp are known.
The toggle clamp system is a machine structure consisting of movable, pin-connected multi-force members that form a stabilized system to transmit forces. The...
Machines: Problem Solving II01:30

Machines: Problem Solving II

Machines are complex structures consisting of movable, pin-connected multi-force members that work together to transmit forces. Consider a lifting tong carrying a 100 kg load. It comprises movable sections DAF and CBG linked together with member AB.
Upward Impending Motion01:21

Upward Impending Motion

A square-threaded screw jack is a mechanical device widely used for lifting heavy loads or applying considerable force. Its operation is based on converting the force applied at its handle into a torsional moment, causing the upward impending motion of the screw. This movement is accomplished by overcoming the static friction between the threads of the screw and the jack.
To better comprehend how a screw jack functions, consider the completely unraveled thread as a block in contact with the...

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by
Same author

Fracture-based grasping: dynamic impact enables predictable robotic anchoring to freshwater ice.

npj Robotics·2026
Same author

Evaluating Variable Transmissions in Body-Powered Prosthetic Grasping.

IEEE transactions on neural systems and rehabilitation engineering : a publication of the IEEE Engineering in Medicine and Biology Society·2026
Same author

Smartphone Haptics For Tactile Temporal Discrimination: Preliminary Insights into Measurement of Function.

Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference·2025
Same author

Agency-preserving robotic assistance for grasp slip recovery in body-powered prostheses.

Frontiers in robotics and AI·2025
Same author

Error recovery in wearable robotic Co-Grasping: the role of human-led correction.

Frontiers in robotics and AI·2025
Same author

Synchronicity: A Measure of Multi-Joint Movement Coordination in Device Assessment.

IEEE ... International Conference on Rehabilitation Robotics : [proceedings]·2025

Related Experiment Video

Updated: Jul 7, 2026

A Structured Rehabilitation Protocol for Improved Multifunctional Prosthetic Control: A Case Study
06:58

A Structured Rehabilitation Protocol for Improved Multifunctional Prosthetic Control: A Case Study

Published on: November 6, 2015

9.4K

Robotically adjustable kinematics in a wrist-driven orthosis eases grasping across tasks.

Erin Y Chang, Andrew I W McPherson, Hannah S Stuart

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |March 5, 2025
    PubMed
    Summary

    People with spinal cord injury (SCI) can improve grasping with robotic assistance allowing more wrist movement. This enhances device usability and reduces perceived effort for daily tasks.

    More Related Videos

    Development of a Novel Task-oriented Rehabilitation Program using a Bimanual Exoskeleton Robotic Hand
    06:44

    Development of a Novel Task-oriented Rehabilitation Program using a Bimanual Exoskeleton Robotic Hand

    Published on: May 20, 2020

    6.9K
    Author Spotlight: Enhancing Grasping Abilities for Hemiplegic Patients with Flexible Robotic Limbs
    03:55

    Author Spotlight: Enhancing Grasping Abilities for Hemiplegic Patients with Flexible Robotic Limbs

    Published on: October 27, 2023

    2.0K

    Related Experiment Videos

    Last Updated: Jul 7, 2026

    A Structured Rehabilitation Protocol for Improved Multifunctional Prosthetic Control: A Case Study
    06:58

    A Structured Rehabilitation Protocol for Improved Multifunctional Prosthetic Control: A Case Study

    Published on: November 6, 2015

    9.4K
    Development of a Novel Task-oriented Rehabilitation Program using a Bimanual Exoskeleton Robotic Hand
    06:44

    Development of a Novel Task-oriented Rehabilitation Program using a Bimanual Exoskeleton Robotic Hand

    Published on: May 20, 2020

    6.9K
    Author Spotlight: Enhancing Grasping Abilities for Hemiplegic Patients with Flexible Robotic Limbs
    03:55

    Author Spotlight: Enhancing Grasping Abilities for Hemiplegic Patients with Flexible Robotic Limbs

    Published on: October 27, 2023

    2.0K

    Area of Science:

    • Rehabilitation Engineering
    • Assistive Technology
    • Neuroscience

    Background:

    • Individuals with C5-C7 spinal cord injury (SCI) often rely on wrist extension for grasping.
    • Existing wearable grasping devices use wrist-driven mechanisms but face long-term abandonment.
    • Wrist constraints in current devices may negatively impact reach and grasp kinematics.

    Purpose of the Study:

    • To investigate if continuous robotic motor assistance enhancing wrist adaptability improves grasping for individuals with SCI.
    • To assess the impact of increased wrist mobility on task difficulty and perceived exertion.
    • To enhance the versatility and user desirability of assistive grasping devices.

    Main Methods:

    • Utilizing continuous robotic motor assistance to provide adaptable wrist posture prior to grasping.
    • Evaluating task difficulty and perceived exertion with enhanced wrist mobility.
    • Analyzing grasp kinematics and device versatility across various hand poses and workspace positions.

    Main Results:

    • Continuous robotic assistance allowing greater wrist adaptability reduced task difficulty and perceived exertion.
    • Increased wrist mobility enabled users to adopt comfortable and natural postures.
    • Enhanced wrist mobility improved the versatility of assistive grasping devices for diverse tasks.

    Conclusions:

    • Allowing greater wrist mobility through robotic assistance enhances the usability of grasping devices for individuals with SCI.
    • Future assistive device designs can improve user experience by integrating body-power with robotic automation for more natural movement.
    • This approach holds potential to increase long-term adoption of assistive grasping technologies.