Release date: 2007-11-26
In 2007, a groundbreaking development in prosthetics took place at Johns Hopkins University in Maryland. The university, in collaboration with the U.S. Defense Advanced Research Projects Agency (DARPA), introduced a revolutionary prosthetic arm that offered unprecedented control and sensory feedback. This advanced prosthetic system was designed to provide users with up to eight degrees of freedom, far surpassing traditional prosthetics that typically had limited mobility options. The system also included a virtual environment for clinical testing, allowing researchers to monitor and refine limb movement and control signals effectively.
The design of this prosthetic was inspired by technology from the space shuttle program. Engineers used a miniature version of the rocket booster to power the device, resulting in a more powerful and durable alternative to conventional battery-powered arms. The propulsion system works by catalyzing hydrogen peroxide, which produces steam and generates thrust to move the robotic limb. Unlike battery-powered models, which often have limited operational time, this rocket-driven arm could function continuously for up to 18 hours on a single tank of hydrogen peroxide. However, managing heat and exhaust remained a challenge. To address this, the system incorporated a cooling mechanism, and even allowed for "perspiration" through the outer skin, similar to how a human body regulates temperature in hot weather.
Clinical trials showed that the new prosthetic provided users with a more natural and intuitive grip, offering a level of dexterity and sensory feedback that was previously unattainable. This innovation marked a significant step forward in improving the quality of life for amputees, especially those who had lost limbs due to combat injuries, such as landmine explosions. DARPA's involvement in the project underscored its commitment to advancing medical and rehabilitation technologies for injured soldiers. The four-year initiative involved over 30 partners across the United States, Europe, and Canada, highlighting the global effort behind this cutting-edge development. ——Shanghai Medical Device Industry Association
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