Source: Hangzhou Asian Para Games official website
Intelligent bionic hand data map Photo by reporter Fang Jianfei
Xu Jialing uses an intelligent bionic torch to hold a torch at the opening ceremony of the Hangzhou Asian Para Games Wang Chuan/Photo
On the evening of October 22, at the opening ceremony of the Hangzhou Asian Para Games, Xu Jialing, the swimming team of the Chinese delegation of the Hangzhou Asian Para Games, as the last torchbearer, she "wore" the intelligent bionic hand, the "thumb" was adducted, and the five fingers were together and held the "laurel" steadily.
How amazing is the intelligent bionic hand that can grasp, pinch, and hold it, which Xu Jialing "wears"?
Xu Jialing lost her left arm in a car accident when she was 5 years old, and she was wearing a traditional prosthetic leg and using traditional gesture switching. This time, the "hand" of science and technology has made her "palm" her life again. Intelligent bionic hand and traditional mechanical structure prosthetic limb is essentially different, intelligent bionic hand is based on brain-computer interface technology interactive system, the use of non-invasive biomagnetic electrodes, collect the user's subcutaneous electromyoelectric nerve signals, fine identification of motor intentions, so that the upper arm amputation user like their original hand, accurately control the speed and position of each finger's movement, can complete a variety of interactive postures, because of this, Xu Jialing holding the torch is more "silky" and more stable.
"Initially, the team approached Xu Jialing and found that her stump was short and had a certain muscle atrophy, and the traditional prosthetic receptive cavity was heavier for her and the experience was poor." The leader of the intelligent bionic hand manufacturer, BrainCo Qiangbrain Technology's intelligent bionic hand engineer team, said that after discovering the problem, the engineer team immediately recustomized the receiving cavity for her, added self-locking joint hinges, reduced the force of the stump, transferred the force to the upper arm, and helped her easily lift the torch.
In order to make the overall vision more technological, after continuous debugging, the final intelligent bionic hand version 2.0 uses deep space gray "skin" and carbon fiber material acceptance cavity. The bionic hand worn by Xu Jialing weighs about 500 grams, can lift up to 30 kilograms in a single time, and has a grip strength of 5 kilograms. This bionic hand has 10 movable joints and 6 degrees of freedom of drive, which can realize the independent movement of 5 fingers and the collaborative operation between fingers, and can easily compare many gestures such as five-finger grip, two-finger pinch, three-finger pinch, Hooketi, side pinch, one-finger pinch, etc., and can complete daily interactive actions such as shaking hands, writing, eating, drinking, dressing, fitness, and sports.
After Xu Jialing "wears" it, the intelligent bionic hand can extract the weak myoelectric and neuroelectric signals on the arm, identify her movement intention, and truly achieve "hand with heart". It is worth mentioning that it only takes a few seconds to wear and remove, and it can be used for more than 10 hours after a full charge, and the price is only one-fifth of the traditional imported smart prosthesis.
Smart Bionic Hand Version 1.0 is a skin tone "hand" and receptive cavity
"The average user only needs to spend a few hours to make the initial match with the bionic hand, and then run in for 3-5 days to achieve precise control, the opening ceremony of the Hangzhou Asian Para Games needs to be foolproof, so Xu Jialing and the team have been training together for more than half a month, training for 30 to 40 minutes a day, in the process of adjusting finger sensitivity, signal strength and finger strength, Xu Jialing and the intelligent bionic hand cooperation is also more and more tacit." The head of the engineer team said.
At present, Xu Jialing has gradually begun to use and adapt to intelligent bionic hands in daily life. Next, the engineering team will help her restore the strength of her stump and re-establish neural pathways, improve the health of her limb, and enable her to better use the intelligent bionic hand to move and live.
Recently, during the torch relay of the Hangzhou Asian Para Games, innovative technologies such as intelligent bionic hands, intelligent bionic legs, and intelligent guide dogs have been integrated into the transmission scene, conveying the concept of "science and technology changes life and makes the impossible possible" to people, bringing convenience to the lives of more disabled people. Next, intelligent bionic prosthetics will continue to be iteratively upgraded to achieve a more realistic appearance and more comfortable wearing. It is worth looking forward to the next generation of intelligent bionic hands or will add sensory feedback functions, so that users of intelligent bionic hands can feel the real touch and temperature of everything in the world.