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    • 8. 发明公开
    • A LOWER LIMB PROSTHESIS
    • BEINPROTHESE
    • EP2790614A1
    • 2014-10-22
    • EP12809314.3
    • 2012-12-12
    • Blatchford Products Limited
    • ZAHEDI, Mir SaeedSTECH, NadineMOSER, DavidSYKES, Andrew John
    • A61F2/68
    • A61F2/68A61F2/64A61F2/66A61F2/6607A61F2002/5003A61F2002/5006A61F2002/5033A61F2002/701A61F2002/704A61F2002/74A61F2002/741A61F2002/745A61F2002/747A61F2002/748A61F2002/7625A61F2002/7635A61F2002/764A61F2002/7645
    • A lower limb prosthesis comprises an attachment section (10), a shin section (12), a foot section (14), a knee joint (16) pivotally connecting the attachment section (10) and the shin section (12), and an ankle joint (22) pivotally connecting the shin section (12) and the foot section (14). The knee joint includes a dynamically adjustable knee flexion control device (18) for damping knee flexion. The prosthesis further comprises a plurality of sensors (52, 53, 54, 85, 87) each arranged to generate sensor signals indicative of at least one respective kinetic or kinematic parameter of locomotion or of walking environment, and an electronic control system (100) coupled to the sensors (52, 53, 54, 85, 87) and to the knee flexion control device (18) in order dynamically and automatically to modify the flexion control setting of the knee joint (16) in response to signals from the sensors. When the inclination sensor signals indicate descent of a downward incline, the damping resistance of the knee flexion control device (18) is set to a first level during a major part of the stance phase of the gait cycle and to a second, lower level during a major part of the swing phase of the gait cycle. During an interval including a latter part of the stance phase, the knee flexion control device (18) is adjusted so that the damping resistance to knee flexion is between the first and second levels.
    • 下肢假体包括附接部分(10),胫部部分(12),脚部分(14),枢转地连接附接部分(10)和胫部部分(12)的膝关节(16) 脚踝接头(22)枢转地连接胫部(12)和脚部(14)。 膝关节包括用于阻止膝盖屈曲的动态可调膝关节屈曲控制装置(18)。 所述假体还包括多个传感器(52,53,54,85​​,87),每个传感器被布置成产生指示运动或步行环境的至少一个相应动力学或运动学参数的传感器信号,以及电子控制系统(100) 耦合到传感器(52,53,54,85​​,87)和膝盖屈曲控制装置(18),以便动态地和自动地修改膝关节(16)的屈曲控制设置,以响应于来自传感器 。 当倾斜传感器信号指示向下倾斜的下降时,膝盖弯曲控制装置(18)的阻尼阻力在步态周期的姿态阶段的主要部分期间被设定为第一水平,并且在步 步态循环的摆动阶段的主要部分。 在包括姿势相位的后半部分的间隔期间,调节​​膝关节屈曲控制装置(18),使得膝盖弯曲的阻尼阻力在第一和第二水平之间。