Variable-rigidity flexible lower limb prosthesis turning device based on pneumatic artificial muscles
A pneumatic artificial muscle, variable stiffness technology, applied in prosthesis, artificial leg, medical science and other directions, can solve the problems of high rigid impact of lower limb prosthesis, can not adjust the stiffness instantaneously, to reduce rigid impact, increase service life, reduce wear and tear Effect
Pending Publication Date: 2020-09-08
JILIN UNIV
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Problems solved by technology
[0004] In order to solve the above problems, the present invention proposes a variable-stiffness flexible lower limb prosthetic turner based on pneumatic artificial muscles to solve the shortcomings of the lower limb prosthesis rigidity shock and the inability to adjust the stiffness instantaneously when the amputee turns.
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[0015] refer to figure 1 , figure 2 , image 3 and Figure 4 As shown, a flexible lower limb prosthetic bender with variable stiffness based on pneumatic artificial muscles includes an upper cover 1, a lower cover 2, a ball 3, two pneumatic artificial muscles 4, two springs 5 and two air ducts 6; the upper cover 1 includes a knee joint connector 11, a first fixed beam 12 and a second fixed beam 13, the knee joint connector 11 is connected to the knee joint through a standard tube, one side of the first fixed beam 12 is fixedly bonded with a pneumatic artificial muscle 41, the first The other side of the fixed beam 12 is fixedly bonded with the airway 6; one side of the second fixed beam 13 is fixedly bonded with the pneumatic artificial muscle 42, and the other side of the second fixed beam 13 is fixedly bonded with the airway 6, and the gas passes through the airway 6 enter the pneumatic artificial muscle 4 through the through holes in the first fixed beam 12 and the se...
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The invention discloses a rigidity-variable flexible lower limb prosthesis turning device based on pneumatic artificial muscles. The rigidity-variable flexible lower limb prosthesis turning device comprises an upper cover, a lower cover, a ball, two pneumatic artificial muscles, two springs and two air guide pipes. Air passes through air guide pipes and enters the pneumatic artificial muscles through holes in a first fixing beam and a second fixing beam, and the air inflow is adjusted according to different turning angles, so that the rigidity of the pneumatic artificial muscle can be changed,and then the rigidity of the turning device is adjusted. The flexible rigidity-variable system based on the pneumatic artificial muscles is adopted, rigid impact of an artificial limb wearer during turning can be improved, walking comfort of disabled persons is improved, and skin abrasion of residual limbs is reduced. Real-time rigidity adjustment is performed according to different turning angles, and the artificial limb can better simulate gait of humans.
Description
technical field [0001] The invention belongs to the technical field of human bionic artificial limbs, and in particular relates to a variable stiffness flexible lower limb prosthetic bender based on pneumatic artificial muscles. Background technique [0002] In the world, there are many people who have lost their legs due to disease, trauma or war. As a rehabilitation device that can help the disabled walk, the lower limb prosthesis has been maturely applied to the disabled after decades of development. Traditional lower limb prostheses include sockets, knee joints, connecting rods, prosthetic feet and other components. When walking, disabled people with prosthetic limbs not only have to walk in a straight line, but also often turn and walk in curves. The existing prosthetics often use rigid structures such as carbon fiber connecting rods and square adapters for the joints between the knee and ankle. Therefore, especially when turning, the amputee tends to turn the prosthe...
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IPC IPC(8): A61F2/60A61F2/74
CPCA61F2/60A61F2/74
Inventor 任雷修豪华王旭钱志辉任露泉
Owner JILIN UNIV