Rehabilitation equipment technology and prosthetics

Rehabilitation devices are becoming increasingly important due to medical advances and an aging society. The aim is to enable patients to recover effectively but gently. This requires drive systems that support gentle, patient-friendly movements, can be controlled precisely, and replicate natural movement patterns as realistically as possible. In prosthetics, the combination of robotics, bionics, and medical technology is opening up completely new possibilities. Bionic hand prostheses are becoming increasingly compact, powerful, and suitable for everyday use. The drive solutions used must be lightweight, compact, and unobtrusive in order to provide the best possible support for users in their everyday lives.

Worm gear sets for bionic robot hands

The bionic hand for robots is modeled on the human hand and combines advanced sensor technology with precise drive technology. Sensors and actuators convert electrical signals into finely tuned movements. Typically, control is achieved through myoelectric impulses, AI-supported control algorithms, or external input systems that enable the fingers to open, close, and grasp objects in different ways. This allows not only simple gripping movements to be performed, but also complex manipulations such as turning, positioning, or simultaneously holding several objects.
 
The worm gear set from Framo Morat precisely converts the received signals into movement – quietly, reliably, and in the smallest of spaces. The self-locking effect of the worm gearing enables the finger position to be held securely even without active drive. Thanks to its compact design, the total weight of the bionic hand remains comparable to that of a natural hand. The noise-optimized running behavior ensures inconspicuous and comfortable use.
 
The advantages of worm gear sets at a glance:
  • Self-locking: For secure finger positioning
  • Compact design: For minimum weight and minimal installation space
  • Noise-optimized running characteristics: For inconspicuous use
More about our worm gear sets

Drive systems for motorized shoulder movement rails

Rehabilitation after shoulder surgery requires the utmost precision. In a motorized shoulder movement splint, two worm gears control the movement: one gear raises and lowers the arm, while the second performs the rotation of the shoulder. Precise manufacturing with a total backlash of less than 1.5° allows movements to be performed safely and gently beyond the top dead center—a crucial factor in avoiding pain and providing optimal support for recovery.

The advantages at a glance:

  • Precise motion control with minimal overall play of less than 1.5°
  • Separate lifting/lowering motion and shoulder rotation thanks to two precisely coordinated worm gears
  • Smooth, patient-friendly motion sequences that correspond to natural movement patterns
More about our development expertise
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