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Related Experiment Video

Updated: Dec 11, 2025

Estimation of Contact Regions Between Hands and Objects During Human Multi-Digit Grasping
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Exploring augmented grasping capabilities in a multi-synergistic soft bionic hand.

Cristina Piazza1,2, Ann M Simon3,4, Kristi L Turner4

  • 1Department of Physical Medicine and Rehabilitation, Northwestern University, Chicago, 60611, IL, USA. cristina.piazza@northwestern.edu.

Journal of Neuroengineering and Rehabilitation
|August 27, 2020
PubMed
Summary
This summary is machine-generated.

The new SoftHand 2 Pro bionic hand, inspired by neuroscientific principles, offers improved dexterity and function. This advanced prosthetic hand enhances grasping capabilities by over 30% for users.

Keywords:
Adaptive synergiesBionic handMyoelectric controlSoft robotics

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Area of Science:

  • Biomedical Engineering
  • Neuroscience
  • Robotics

Background:

  • Advanced bionic hands aim to surpass conventional single grip limitations.
  • High complexity in current prosthetics hinders robustness and intuitive control.
  • Neuroscientific theories, like postural synergies, inspire new prosthetic designs.

Purpose of the Study:

  • To introduce the SoftHand 2 Pro, a second-generation bionic hand with enhanced capabilities.
  • To investigate a continuous switching control method using myoelectric pattern recognition.
  • To evaluate the performance of the new prosthetic hand in able-bodied and amputee subjects.

Main Methods:

  • Development of the SoftHand 2 Pro with 19 degrees-of-freedom and a dual synergistic layer.
  • Implementation of a myoelectric pattern recognition classifier for continuous switching control.
  • Validation through standardized assessments with both able-bodied individuals and amputees.

Main Results:

  • The SoftHand 2 Pro demonstrated a significant improvement in fine grasp capabilities, exceeding 30%.
  • Overall hand function saw an approximate 10% enhancement compared to the first-generation SoftHand Pro.
  • The system proved effective and reliable in both able-bodied and amputee participants.

Conclusions:

  • The SoftHand 2 Pro represents a viable advancement in prosthetic hand technology.
  • The synergistic approach contributes to more natural, reliable, and intuitive dexterous hands.
  • This research paves the way for future developments in upper-limb prosthetics.