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lower weight bearing robot joint

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  • Preliminary Design of Lower Limb Weight-bearing ...

    A design of Lower Limb Exoskeleton Robot which can strength body's weight is described.This weight-bearing exoskeleton robot has 8degrees of freedom which can complete not only the abduction,adduction,flexion and extension of the hip joint,but also the flexion and extension of the knee joint and also the flexion movement of the ankle joint.An optimal structure design is proposed based …

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  • NYC Robotic Total Knee Replacement ... - Robotic

    Conclusion: Weight-bearing robot assisted training for the lower limb can improve balance, motor function of lower limb, and activities of daily living in hemiplegic patients following stroke. The robot training is better than physical exercise instructed by therapists in balance.

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  • Joint loading in the lower extremities during elliptical ...

    2021-5-21 · The damaged joint surfaces on the end of the femur (thigh bone) and top of the tibia (shin bone) are replaced with new surfaces called implants, usually made of metal alloys of cobalt chrome and titanium, and a ultra-high molecular weight polyethylene plastic insert bearing.

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  • Weight-Bearing Joint Social Security Disability ...

    The motion of the body's center of mass, lower-limb-joint angles and moments were obtained. Results: Pedal rates and step lengths were 52.20 rpm (SD=2.34) and 50.56 cm (SD=2.14), respectively. During early stance the vertical PRF was smaller than the GRF, and the medial and posterior shear components were greater. ... Weight-Bearing ...

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  • Osteoarthritis of weight bearing joints of lower limbs

    2011-8-30 · Under Section 1.00 Muscuskeletal System, you may find how the SSA evaluates weight-bearing joint conditions in order to qualify for Social Security Disability Insurance (SSDI) or Supplemental Security Income (SSI) benefits. Weight-bearing joints, also known as “load-bearing” joints, are located in the knees, hands, hips, feet, and spine.

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  • Which Bones & Joints Bear the Weight of the Body?

    1994-1-22 · Objective : To compare the cumulative 21 year incidence of admission to hospital for osteoarthritis of the hip, knee, and ankle in former elite athletes and control subjects. Design : National population based study. Setting : Finland. Subjects : 2049 male athletes who had represented Finland in international events during 1920-65 and 1403 controls who had been classified healthy at the age of 20.

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  • The Wear and Tear of Obesity: the Burden of Weight

    The primary weight bearing joints are the ankles, knees and hips. Joints of the feet, pelvis and low back and spine (especially the low back) are also weight-bearing. While OA can develop due to wear and tear on any joint, those that bear our weight are most susceptible because of the mechanical force placed on them. For this reason, the more ...

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  • Acromioclavicular joint (AP weight-bearing view ...

    2020-12-11 · 问题解决 1. 在 Revolute Joint 中:Joint [joint1] is of type REVOLUTE but it does not specify limits 解决 在 joint_revolute.urdf 文件中的 标签中添加 属性 Get Price

  • Guidelines for Robot Joint Designs - AZoSensors.com

    2018-2-2 · In the case of a robot joint, weight is vital, thus minimizing the number of parts advised. Conclusion. In this article, the most compact, lowest profile robot joint has been designed with a combination of low profile gearing, a direct drive frameless motor kit, and encoders.

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  • A Self-Folding Robot Arm for Load-Bearing Operations

    2019-10-25 · A Self-Folding Robot Arm for Load-Bearing Operations ... light-weight structures, and this has been used in products from corrugated cardboard ... shoulder joint connecting the lower linkage to the base, and the elbow joint connecting the lower and upper linkages (Fig. 4). A gripper is attached to the arm at the end of the

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  • Frontiers | Human Lower Limb Joint Biomechanics in

    2020-2-11 · Daily human activity is characterized by a broad variety of movement tasks. This work summarizes the sagittal hip, knee, and ankle joint biomechanics for a broad range of daily movements, based on previously published literature, to identify requirements for robotic design. Maximum joint power, moment, angular velocity, and angular acceleration, as well as the movement-related range of …

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  • Review Article Robotics in Lower-Limb Rehabilitation after ...

    2019-7-30 · of Twente [36], Holland, has developed a lower extremity-powered exoskeleton gait rehabilitation robot (LOPES) [37, 38]. A LOPES single leg has 2 degrees of freedom in the hip joint and 1 degree of freedom in the knee joint. LOPES divided the patient’s recovery into two stages: patient dominant and robot driven, and different control

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  • Robotics in Lower-Limb Rehabilitation after Stroke

    2017-6-8 · With the increase in the elderly, stroke has become a common disease, often leading to motor dysfunction and even permanent disability. Lower-limb rehabilitation robots can help patients to carry out reasonable and effective training to improve the motor function of paralyzed extremity. In this paper, the developments of lower-limb rehabilitation robots in the past decades are reviewed.

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  • Non-Binding Lower Extremity Exoskeleton (NextExo) for

    Non-Binding Lower Extremity Exoskeleton (NextExo) for Load-Bearing Du-Xin Liu, Xinyu Wu, Min Wang, Chunjie Chen, Ting Zhang and Ruiqing Fu Abstract In this paper, we present a novel non-binding

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  • Using robot-applied resistance to augment body

    The patient could tolerate the training. Overground walking speed, endurance, and performance on all subtasks of the mEFAP improved and were accompanied by increased lower-limb joint flexion and toe clearance during gait. The patient's ambulatory self-confidence and self-perceived performance in wal …

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  • Shoulder Weight-Bearing Exercises for Balance

    2020-2-10 · Shoulder weight-bearing exercises may be required after a shoulder injury or surgery to help you fully recover. Your physical therapist can work with you to make sure you properly incorporate shoulder balance and weight-bearing exercises into your rehab routine.

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  • The Bone & Joint Journal | Vol 103-B, No 5

    Patellar resurfacing during primary total knee replacement is associated with a lower risk of revision surgery: an analysis using the National Joint Registry. Linda P. Hunt, Gulraj S. Matharu, Ashley W. Blom, Peter W. Howard, J. Mark Wilkinson, Michael R. Whitehouse; Pages: 864–871

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  • Soft-Tissue Injuries | Johns Hopkins Medicine

    2021-5-23 · Many activities can lead to soft-tissue damage of muscles, ligaments, and tendons. The result can be pain, swelling, bruising, and damage. Soft-tissue injuries are classified as the following: A contusion (bruise) is an injury to the soft tissue often produced by a blunt force, such as a kick, fall ...

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  • Mechanical Efficiency Investigation of an ankle

    2020-11-20 · Lower limb assistive robots have a wide range of applications in medical rehabilitation, hiking, and the military. The purpose of this work is to investigate the efficiency of wearable assistive devices under different weight-bearing walking conditions. We designed an experimental platform, with a lightweight ankle-assisted robot weighing 5.2 kg and carried mainly on the back.

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  • Bearing solutions and dynamic motion systems for

    2019-7-3 · Swivel joint bearing supports for articulated robots The lower swivel bearing support for axes 1 and 2 of a robot supports the entire weight and the largest tilting moments. What makes things even more difficult is the fact that tilting in the bearing support is multiplied as far as the tool center point (TCP).

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  • design - Building Robotic arm joint - Robotics Stack

    2021-4-5 · It is a nice simple design in which the weight bearing axes are all nicely horizontal, which means these axes behave similarly irrespective of the load weight. ... of the upper arm, and use the shaft rotation to drive the upper arm, then use a fixed shaft mechanism to drive the lower arm pulley (this extra joint will be freely rotating on the ...

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  • Robot joint - Mantec, Gesellschaft Fur

    The robot joint recited in claim 1, wherein said bearing means comprises ball bearing means disposed between said mounting flange means and said housing means. 4. The robot joint recited in claim 1, wherein said drive motor means comprises three-phase motor means and further including travel distance pick-up means disposed on a side of said ...

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  • Gait Rehabilitation Robot (Lokomat) – Sensory-Motor ...

    Thus, it allows movements in the sagittal plane only. The natural gait pattern includes also movements of the hip joint in the coronal plane (ab-/adduction) and lateral movements of the pelvis to displace the body's center of mass over the weight-bearing leg. These movements are crucial for postural control.

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  • A New Variable Stiffness Design: Matching Requirements

    2008-7-17 · into a robot joint. It should be possible to change the stiffness of the joint continuously and with the maximum load applied. The maximum output torque should be at least 120 Nm. Other design goals are low weight, and a compact and robust mechanics, which allows the assembly in a robot arm system Harmonic Drive Gear Circular Spline Flex Spline

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  • Lower Limb Joint Nursing and Rehabilitation System

    2021-2-9 · The movement of human lower limbs mainly depends on the hip joint, knee joint, and ankle joint. The hip joint transfers the weight of the body to the lower limbs and can complete some movements in the range of flexion and extension. In the hip joint, the main body weight bearing is the femoral head.

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  • Design and Development of a Compact High-Torque

    2017-9-6 · A design concept and a mockup prototype for a compact robot joint drive system were developed in this paper. With the motor and transmission and joint structure integrated and optimized together, higher torque densities could be achieved relevant to existing drive systems involved in space robotic applications.

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  • Improved Weight-Bearing Symmetry for Transfemoral

    2016-7-1 · Furthermore, using a powered knee-ankle prosthesis for the stand-to-sit transition improved limb-loading symmetry. Increased weight bearing on the prosthetic side may make weight transfer tasks and other activities of daily living easier for transfemoral amputees and reduce the risk of overuse injuries or joint degeneration to the intact limb.

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  • Knee kinematics in medial osteoarthritis during in vivo ...

    2009-6-5 · Toshihide Fujii, Takashi Sato, Akihiko Ariumi, Go Omori, Yoshio Koga, Naoto Endo, A comparative study of weight-bearing and non-weight-bearing 3-dimensional lower extremity alignment in knee osteoarthritis, Journal of Orthopaedic Science, 10.1016/j.jos.2019.11.012, (2020).

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  • Robot joint - Mantec, Gesellschaft Fur

    The robot joint recited in claim 1, wherein said bearing means comprises ball bearing means disposed between said mounting flange means and said housing means. 4. The robot joint recited in claim 1, wherein said drive motor means comprises three-phase motor means and further including travel distance pick-up means disposed on a side of said ...

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  • Lower extremity joint-level responses to pelvis ...

    2018-10-2 · Lower extremity joint-level responses to pelvis perturbation during human walking ... faulty weight bearing was shown to be a major cause of falls in ... as well as data to compare robot ...

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  • A New Variable Stiffness Design: Matching Requirements

    2008-7-17 · into a robot joint. It should be possible to change the stiffness of the joint continuously and with the maximum load applied. The maximum output torque should be at least 120 Nm. Other design goals are low weight, and a compact and robust mechanics, which allows the assembly in a robot arm system Harmonic Drive Gear Circular Spline Flex Spline

    Get Price
  • Harmonic Drive LLC

    2015-12-8 · • Integrated output bearing • Special Circular Spline As already mentioned in an earlier example, the low weight and high precision of Harmonic Drive® strain wave gears are ideal for applications in SCARA robots. The high ac-curacy and high dynamic performance are also prereq-uisites for demanding assembly tasks. The CSF-2UH

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  • Universitätsklinik Balgrist ROCS: 3D LEDECO

    Deformities of the lower extremity (e.g., genu varum & valgus) are a frequent cause of degeneration in the knee joint known as osteoarthritis. These processes are initiated by a change in the mechanical axis of the leg due to the deformity, which leads to punctual overloading of the knee joint cartilage.

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  • Design and Development of a Compact High-Torque

    2017-9-6 · A design concept and a mockup prototype for a compact robot joint drive system were developed in this paper. With the motor and transmission and joint structure integrated and optimized together, higher torque densities could be achieved relevant to existing drive systems involved in space robotic applications.

    Get Price
  • Motus Labs launches M-DRIVE robotic ... - The Robot

    2018-12-3 · Motus Labs, a Dallas, Texas-based startup that builds robot joint actuators and drives, came out of stealth mode today and unveiled what has been in the works for five-plus years.The Motus M-DRIVE, which features a gearless drive design, uses mating blocks instead of traditional gear teeth. The M-DRIVE will be available in the second quarter of 2019.

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  • Compliant lower limb exoskeletons: a comprehensive

    2019-5-9 · Exoskeleton technology has made significant advances during the last decade, resulting in a considerable variety of solutions for gait assistance and rehabilitation. The mechanical design of these devices is a crucial aspect that affects the efficiency and effectiveness of their interaction with the user. Recent developments have pointed towards compliant mechanisms and structures, due to ...

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  • Real Time Biofeedback Rehabilitation Therapy &

    Set threshold for feedback on weight bearing with one touch A portable wireless device for audio visual feedback and analysis on weight bearing by using in-shoe pads. For comprehensive data analysis on gait — just use our data logger — choose your file and our specially written Excel macro all the graphs and analysis you will need.

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  • Robot-driven downward pelvic pull to improve crouch

    2017-7-26 · Children with cerebral palsy commonly exhibit an abnormality called crouch gait, which is characterized by excessive flexion of the hips/knees and weak plantar flexor muscles during the stance phase. One of the major reasons for this pathological gait is weakness in soleus muscles. During the mid-stance phase of gait when the toe and heel are both on the ground, the soleus keeps the shank ...

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  • The Effectiveness of Exoskeleton Type Robotic Gait ...

    2020-12-2 · Contraindications to weight-bearing of the lower extremities such as severe joint construction, osteoporosis, and untreated fractures; Patients weighing over 135kg; Damage to the skin in contact with the machine when walking with robot assisted device; Patients who underwent orthopedic or neurosurgery surgery within 6 months of the start of the ...

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  • A QUASI-PASSIVE LEG EXOSKELETON FOR LOAD

    2020-11-29 · A Novel Method for Designing Motion Profiles Based on a Fuzzy Logic Algorithm Using the Hip Joint Angles of a Lower-Limb Exoskeleton Robot Buchun Song, Dongyoung Lee, Sang Yong Park and Yoon Su Baek 29 September 2020 | Applied Sciences, Vol. 10, No. 19

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  • design - Building Robotic arm joint - Robotics Stack

    2021-4-5 · It is a nice simple design in which the weight bearing axes are all nicely horizontal, which means these axes behave similarly irrespective of the load weight. ... of the upper arm, and use the shaft rotation to drive the upper arm, then use a fixed shaft mechanism to drive the lower arm pulley (this extra joint will be freely rotating on the ...

    Get Price
  • Exoskeleton and End‐Effector Robots for Upper and

    2018-9-27 · Walking is “the repeated performance by the lower limbs of a sequence of motions that simultaneously advances the body along the desired line of progression while also maintaining a stable weight‐bearing posture 1 ”. The elements characterizing “normal” walking are progression, standing stability, and energy conservation.

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  • A New Variable Stiffness Design: Matching Requirements

    2008-7-17 · into a robot joint. It should be possible to change the stiffness of the joint continuously and with the maximum load applied. The maximum output torque should be at least 120 Nm. Other design goals are low weight, and a compact and robust mechanics, which allows the assembly in a robot arm system Harmonic Drive Gear Circular Spline Flex Spline

    Get Price
  • Lightweight Design and Encoderless Control of a

    2013-12-12 · CAD design of the delta robot 3.1. Joint Design As mentioned in the previous sections, in order to reduce the moving system weight a new joint is designed that replaces the requirement of two steel bearings per each link. The new joint structure is based on the use of very small hard ruby ball-probe pairs produced by Renishawc company. The ...

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  • Effects of Robot-Assisted Gait - SAGE Journals

    2019-8-29 · speed, joint speed, joint angle, and other gait training infor - mation in real time. This feedback system aided patients in their efforts at more efficient movement of the lower extremities while the therapist controlled the intensity of the training. As function improved, levels of body-weight support,

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  • TIGERBOT EXTENSION

    weight, which should help in the process of the robot walking on its own. Design process Figure 1 – Mechanical CAD Figure 2 – Joint Bearing Design Mechanical Design: The mechanical portion of the robot called for creating a humanoid design, as seen in Figure 1, and optimally allowed for 23 DOF.

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  • E cient algorithms for the study and design of parallel ...

    2012-6-22 · robot calibration and arc trajectory tting in 3D circles. ... Of Freedom) model to the lower leg, namely as a linkage of two ideal revolute joints and 3 rigid segments: the shank, the talus and the foot. ... of the ankle joint complex for non-weight-bearing, weight-bearing and walking ankle motions.

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  • The effectiveness of proprioceptive training for

    2015-1-28 · Objective: Numerous reports advocate that training of the proprioceptive sense is a viable behavioral therapy for improving impaired motor function.However, there is little agreement of what constitutes proprioceptive training and how effective it is. We therefore conducted a comprehensive, systematic review of the available literature in order to provide clarity to the notion of training the ...

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