Design Pro Technology’s new D-Ankle prosthesis allows for a more natural walking experience for amputees. Powered by a FAULHABER brushless motor, this innovative foot prosthesis actively moves, simulating natural foot movement by bending the foot up and down with each step, resulting in smoother, more stable walking.
Unlike traditional passive prostheses, the D-Ankle uses motorized assistance to mimic the natural bending of the foot. Its intelligent control system adjusts to the user’s gait rhythm, reducing fatigue and the risk of tripping. The prosthesis detects the different phases of walking using sensors, ensuring the foot maintains an anatomically correct position.
Leg amputations can occur due to accidents, diseases, or birth defects. Historically, prosthetics, such as the wooden peg legs used by pirates, were stiff and unnatural. Modern prosthetics, however, are equipped with advanced technologies like joints and algorithms, offering better mobility and comfort. High-performance versions, such as carbon-fiber prostheses used by athletes, can even enhance physical capabilities.
While sports prostheses focus on speed, the D-Ankle is designed for daily use, prioritizing natural movement and stability. It includes a motor-powered “dorsal flexion” feature, which bends the foot toward the shin, helping prevent trips and falls. Traditional passive prostheses require compensatory movements like hip rotation, but the D-Ankle eliminates this need.
During walking, the prosthesis replicates the natural heel-to-toe motion and provides active “plantar flexion,” which pushes the foot off the ground, contributing to energy savings and smoother steps. The device’s carbon fiber construction allows it to adapt to uneven surfaces.
The prosthesis features a controller that uses sensors to measure foot angle, pressure, and movement, adapting the foot’s position based on terrain, such as inclines or declines. Users can further customize settings, including step length and push-off force, via a smartphone app.
Powered by a FAULHABER brushless motor, the D-Ankle delivers the agility needed for everyday activities, from walking to jogging. The motor’s efficiency allows for up to 12 hours of use on a single battery charge. The motor’s compact size and light weight make it ideal for maintaining a natural gait without adding bulk.
After successful testing, the D-Ankle prosthesis entered the market at the end of 2023. Its standard adapter allows it to be fitted to any modular prosthesis stem, offering flexibility for users. Additionally, the heel height can be adjusted for different types of shoes, including heels.
Marcin Dziemianowicz, founder of Design Pro Technology, expressed his excitement about the progress made with the D-Ankle, emphasizing its potential to enhance mobility for amputees. The collaboration with FAULHABER has opened doors for further innovations in prosthetic design, with plans for future devices utilizing the same motor technology.
FAULHABER specializes in creating high-precision drive systems for a wide range of industries, including medical technology, robotics, and aerospace. Their motors are known for their reliability and versatility, making them ideal for complex applications like prosthetics. With over 25 million possible configurations, FAULHABER’s drive systems can be customized to meet specific needs.
