Prosthetic hands have long struggled to replicate the dexterity and functions of natural hands, often limiting users to one grasping function at a time.
This limitation has made everyday tasks, such as typing on a keyboard or curling hair, challenging for those who rely on prosthetics.
However, a groundbreaking study from Florida Atlantic University (FAU) offers a promising advance that could transform the experience of prosthetic hand users.
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Man wearing soft wearable robotic armband (Florida Atlantic University)
The new technology enables users to understand two objects simultaneously
Researchers in FAW College of Engineering and Computer Sciencein collaboration with the Charles E. Schmidt College of Science, conducted an innovative study combining haptic feedback, electrophysiological control, and a soft, wearable robot strap. This study aims to explore whether users can control grip forces applied to two different objects simultaneously with a clamshell prosthetic hand.
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The results of the study, published in Scientific Reports, showed that multiple channels of haptic feedback It allowed participants to grasp and move two objects simultaneously without dropping them, even when visual feedback was obstructed.
For example, participants were able to pinch a card between their fingers while simultaneously unscrewing a water bottle cap or toggling a light switch with their little finger.
Prosthetic robot hand (Florida Atlantic University)
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Multi-channel soft robotic armband
A major innovation in this research was the development of omnichannel Automatic badge Designed to transmit synthetic sensations of touch. These weapons included soft actuators that provided feedback on relative contact force and vibration stimuli that alerted users if they were about to drop or break an object. The design of the armband allowed for salient feedback to be provided at three critical points corresponding to the thumb, index and little fingers, effectively enhancing the user’s ability to control multiple objects simultaneously.
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Study participants reported that haptic feedback was much more important than visual feedback, especially since visual cues often failed to indicate when an object was about to be lost. This insight underscores the necessity of incorporating tactile sensations into prosthetic technology.
Prosthetic robot hand (Florida Atlantic University)
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Implications for future artificial design
The implications of this study go beyond the immediate user benefits; They suggest a shift in how prosthetic hands will be controlled in the future. By enabling refined limbic control through enhanced sensory feedback, this research opens new pathways for individuals with upper limb loss to engage in complex tasks considered impossible with current prosthetics. This includes activities such as playing musical instruments or performing complex surgical procedures.
In addition, Researchers It indicated that participants with limb loss performed as well as subjects with canopy on key performance measures during the tasks. This finding is particularly encouraging for clinical applications and suggests that advances in technology can fill gaps in user functionality.
Prosthetic robot hand (Florida Atlantic University)
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As researchers continue to improve these prosthetic technology systems, we may soon see prosthetic hands that not only replicate but exceed the capabilities of natural hands, enabling users to regain their independence and fully participate in both daily activities and specialized tasks. This innovative approach not only addresses current limitations, but also aims to pave the way for future developments in assistive technologies for individuals with disabilities.
What are your personal experiences or stories regarding the use of prosthetics or assistive devices? Let us know by writing to us cyberguy.com/contact.
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