Improved Prosthetic Functionality Through Advanced Hydraulic Design


  • Bjørn Olav Bakka
  • Christian Fredrik Stray
  • Jos Poirters
  • Ole Olsen


Hy5 met its research objective of designing a hand prosthesis to fill the gap between standard myoelectric grippers and premium, bionic-like hand prostheses. Our approach applied state-of-the-art hydraulic actuator technology with functionality embedded in advanced 3D printing of titanium and plastics. As a result, the opening and closing of the hand is myo-electrically controlled and compatible with industry standards while the hydraulics enable an adaptive and independent pressure build-up on the fingers as they grasp an object. This design mimicking realistic hand gripping without requiring one motor per finger as in bionic-like prosthesis.

Testing concluded that the MyHand prosthetic hand manages all grips (pinch, power, fist, tripod and point) as intended and works as a substitute for a missing hand. Users also responded very favourably to the innovative emergency release button, an added safety feature. The users were attracted by the simplicity and sturdiness of Hy5, which promises a reliable product with low life-cycle cost.




How to Cite

B. O. Bakka, C. F. Stray, J. Poirters, and O. Olsen, “Improved Prosthetic Functionality Through Advanced Hydraulic Design”, MEC Symposium, Jul. 2020.

Conference Proceedings Volume


Prosthetic Devices and Materials