Advancements in Prosthetics: The Rise of Exoskeletons
When it comes to prosthetics, people often envision complete limb replacements. However, with the continuous advancements in technology, prosthetics are no longer limited to individuals with amputations. Biomedical engineers have now developed exoskeletons that hold immense potential for those with leg paralysis. These exoskeletons offer a glimmer of hope to individuals who possess limited mobility but lack the necessary strength to support their own weight or walk.
To enable this groundbreaking technology, researchers employ a range of techniques. These include connecting electrodes to various parts of the body such as the cortex, spinal cord, peripheral nerves, and even nerve endings in muscles. By doing so, the electrodes can effectively detect the intended movement of the individual and promptly send a signal to the exoskeleton. Subsequently, the exoskeleton, with the aid of a sophisticated suspension system, faithfully replicates the person’s intended movements.
The Advancements in Prosthetics
The field of prosthetics has made significant progress in recent years, particularly in addressing the accuracy issue that plagues current motorized prosthetics. One of the main challenges with these devices is that they require users to learn a completely new set of actions, as the movements necessary to operate them differ from those of a natural limb.
However, researchers are optimistic about the future of prosthetics as they strive to create devices that can seamlessly interpret signals from the brain. By using electrodes, scientists aim to accurately capture brain signals and translate them into intuitive movements, mimicking the actions of a biological limb.
A noteworthy breakthrough in this area involved a groundbreaking experiment conducted on a 52-year old quadriplegic woman. In this study, computer chips containing 96 microelectrodes were implanted into specific regions of her brain that control the movements of her right arm and hand. The chips were designed to receive signals from these neurons and transmit them to a robotic hand.
Remarkably, the patient was able to control the robotic hand simply by thinking about moving her arm. The implanted chips successfully interpreted her brain signals and sent corresponding instructions to the prosthetic hand, allowing her to perform tasks such as shaking hands with others and even enjoying a chocolate bar.
These advancements in prosthetic technology hold immense promise for individuals with limb loss or impairment, offering them the hope of regaining seamless and intuitive control over their artificial limbs.