Multifunctional knee osteoarthritis rehabilitation robot based on rope-driven four-bar linkage structure

The knee osteoarthritis rehabilitation robot, with its rope-driven four-bar linkage structure and detachable load-free module, solves the problems of fixation and rehabilitation training in existing technologies. It achieves multifunctional walking assistance, load-free operation, and correction, adapting to the individual needs of patients and promoting postoperative rehabilitation.

CN117919054BActive Publication Date: 2026-07-03UNIV OF SHANGHAI FOR SCI & TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
UNIV OF SHANGHAI FOR SCI & TECH
Filing Date
2024-01-25
Publication Date
2026-07-03

AI Technical Summary

Technical Problem

Existing rehabilitation robots for knee osteoarthritis cannot be used as a brace for fixation and to provide rehabilitation training in the early stages of patient recovery, and they lack multifunctional walking assistance, load-free operation, and inversion/valgus correction capabilities.

Method used

This multifunctional knee osteoarthritis rehabilitation robot uses a rope-driven four-bar linkage structure to connect the femur and tibia wearing units. It is equipped with a detachable load-free module to achieve functions such as assisted walking, load-free operation, rehabilitation training, and inversion/valgus correction. It is dynamically controlled by inertial sensors and orthotic motors.

Benefits of technology

It effectively meets the rehabilitation needs of patients with knee osteoarthritis, provides personalized treatment plans, reduces postoperative knee joint pressure, promotes muscle and functional recovery, and adapts to the needs of patients at different stages of rehabilitation.

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Abstract

This invention relates to a multifunctional rehabilitation robot for knee osteoarthritis based on a rope-driven four-bar linkage structure, comprising a shell, a main control drive module, a knee joint wearable module, a knee joint connection and transmission module, and a detachable load-free module. The main control drive module is housed within the backpack shell. The knee joint wearable module includes a femoral wearable unit and a tibial wearable unit, connected via the knee joint connection and transmission module. The knee joint connection and transmission module includes a four-bar linkage structure and a rope drive assembly, which drives the four-bar linkage structure to achieve knee flexion and extension. The detachable load-free module includes a hip support unit and a leg support unit; the hip support unit is connected to the femoral wearable unit, and the leg support unit is connected to the tibial wearable unit. Compared with existing technologies, this invention effectively addresses the rehabilitation needs of patients with knee osteoarthritis and helps patients with varying degrees of varus / valgus aberration correction achieve assisted walking, load-free operation, rehabilitation training, and varus / valgus correction.
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