China3D printingNet March 14th, a group of GermanResearchersIn the recently published “Non-contact visual control of personalized hand prosthesis/skeleton through tracking using augmented reality glasses”, the use of3D printingA unique system developed by technology enablesWith simple commandsTo activate the hand prosthesis.
Created to help amputees,3D printingThe flexible pointer is integrated with the electric exoskeleton. The only interface used by the patient is through augmented reality (AR) form of optically transparent glasses (OSTG) and equipped with a front camera. The markings attached to the prosthesis are infrared LEDs or “glue points.” After identifying the mark, the coordinate system of each device will be connected due to a special algorithm.
The hand prosthesis can be any mobile hand prosthesis or robotic arm.
This design allows the viewing direction to be fixed between the AR glasses and the prosthesis, rather than between the eyes as people naturally expect. The prosthesis can also work through the control panel, which can always be superimposed on the AR glasses, or it can only be based on the viewing direction as needed.
According to China3D printingNet understands that in the simplest case, the control panel may contain virtual’buttons’, which will be triggered when the viewer’s sight lasts for more than one second. In addition, the user can also execute commands in the form of a defined minimum movement in the viewing direction.
Commands for this developing concept may result in the following movements: the hand is fully closed, moving in the opposite direction, the hand is fully closed, the hand is half closed, and the thumb is moved. According to their preference for the function of the prosthesis, users can customize the commands. In fact, they may be able to extend actions, such as cutting off the device when triggered by a specific contact and pressure.
This prosthetic concept can also choose to set up a camera for line-of-sight tracking, so that you can better control the commands on the panel.The researchers concluded: “Only using AR glasses (without any other complex signal detection through EMG, EOG or EEG) to control the prosthesis or robotic hand is a new discovery, and may simplify the patient’s prosthetic equipment in the near future. Availability.Another step to personalize the amputee’s hand prosthesis may be to use standard mobile exoskeletons that are easy to operate and inexpensive, instead of using complex hand prostheses and using a laser scanner for healthy hands (if available ) Replace missing hands, or volunteer hands.If a healthy hand can be scanned, the data can be mirrored to the other side of the person to replace the lost hand, and use flexible and light polymer materials for3D printing. Then, this personalized hand refill can be equipped with an exoskeleton in the same way.
China3D printingOnline reviews:3D printingIt has had a huge impact in the global prosthetic community, especially the public welfare e-NABLE and other organizations, which create and distribute artificial limbs, and even install artificial limbs for disabled cats and dogs. In the future, with the technology and development of prosthetics,3D printingTechnology will also serve mankind better.
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