WO-2026092647-A1 - HIP ADDUCTION AND ABDUCTION TRAINING MECHANISM

WO2026092647A1WO 2026092647 A1WO2026092647 A1WO 2026092647A1WO-2026092647-A1

Abstract

Disclosed is a hip adduction and abduction training mechanism (600), wherein an arc-shaped track (610) is engaged at the lower part of the distal end of a linear guide rail (110), is in an arc shape that coincides with a trajectory of rotation in which the distal end of a base is the center of a circle and the length of the base is the radius, and is provided with meshing teeth (611) on an inner concave surface thereof; a gear is correspondingly connected to and meshes with the lower part of the distal end of the linear guide rail (110); the gear is provided with a rotatable shaft (621); and two adduction and abduction training ropes (630) are respectively connected to two sides of the shaft, or, only one adduction and abduction training rope (630) penetrates the shaft and is fixedly connected to two sides of the shaft, and then the two adduction and abduction training ropes or the two segments of the adduction and abduction training rope extend to two sides of the proximal end of the base along the linear guide rail and are detachably fixed to the two sides, allowing for trainees to pull with their upper limbs. The present utility model enables a patient to undergo training of multiple degrees of freedom that integrates multiple modes, such as passive, assisted and active modes, as early as possible when in a recumbent position, with the range of adduction and abduction reaching up to 45°, thereby effectively promoting the early rehabilitation of the patient.

Inventors

CHEN, XIAOHUA
HU, HAO
CHEN, Qiaofeng

Assignees

深圳市人民医院

Dates

Publication Date: 20260507
Application Date: 20251031
Priority Date: 20241101

Claims (10)

A hip joint adduction and abduction training mechanism (600) includes a base (100) and a flexion-extension support (200); the main body of the base (100) is a linear guide rail (110), which is connected to a head connector (120), and a linear groove (111) is provided on the linear guide rail along its length; the flexion-extension support (200) is composed of a thigh support (210), a lower leg support (220), and a foot support (230) that are rotatably connected in sequence; the outer end of the thigh support (210) is rotatably connected to the head connector (120), and the bottom end of the foot support (230) is connected to a flexion-extension roller (231), which can reciprocate on the linear groove (111) to realize the reciprocating flexion-extension of the flexion-extension support above the base; characterized in that, An arc-shaped track (610) is fitted at the lower end of the linear guide (110). The arc shape is the same as the trajectory of rotation with the end of the base as the center and the length of the base as the radius. The concave surface of the arc shape is provided with meshing teeth (611). A gear for inward and outward movement is rotatably connected vertically at the corresponding position at the lower end of the linear guide (110). The gear for inward and outward movement (620) meshes with the meshing teeth (611). The inward and outward gear (620) has a rotatable spindle (621), and two inward and outward training ropes (630) are respectively connected to both sides of the spindle, or only one inward and outward training rope (630) is fixedly connected to both sides of the spindle of the inward and outward gear (620) through it, and then extends along the linear guide rail (110) to both sides of the first end connector (120) of the base for detachable fixing.
According to claim 1, the hip joint adduction and abduction training mechanism is characterized in that: the adduction and abduction gear (620) is an I-shaped gear, with gears at the upper and lower ends and a spindle (621) in the middle; correspondingly, the meshing teeth are two parallel rows of upper and lower teeth; the I-shaped adduction and abduction gear (620) is engaged in the I-shaped groove (622) of the linear guide rail (110).
According to claim 1, the hip joint adduction and abduction training mechanism is characterized in that: the ends of the pair of adduction and abduction training ropes (630) can be hung on the fixing positions or hanging rings (631) on both sides of the first end connector (120) of the base.
According to claim 3, a hip joint adduction and abduction training mechanism is characterized in that: the first end connector (120) is further provided with a hook (125) for fixing the rope that is pulled to a certain extent and requires movement positioning.
According to claim 1, the hip joint adduction and abduction training mechanism is characterized in that: the middle part of each of the adduction and abduction training ropes (630) passes through the rope fixing tubes (160) set on both sides of the linear guide rail (110).
A hip joint adduction and abduction training mechanism according to any one of claims 1-5 is characterized in that: a support plate (410) is provided outside the foot support plate (232) of the foot bracket (230), the lower end of the support plate (410) is hinged to the heel of the foot support plate (232), and an elastic component (420) is provided between the upper end of the support plate and the forefoot of the foot support plate (232).
According to claim 6, a hip joint adduction and abduction training mechanism is characterized in that: an encapsulation shell (421) is used to encapsulate the elastic component (420) between the foot support plate (232) and the support plate (410).
A hip joint adduction and abduction training mechanism according to claim 6, characterized in that: the elastic component (420) is a spring or a hydraulic rod.
According to claim 1, a hip joint adduction and abduction training mechanism is characterized in that: an electrical control box (700) is connected to the end of the linear guide rail (110), the control box has a built-in power supply or can be connected to a power supply, and has a control display screen (701) and control buttons (702); the electrical control box has an extended wire interface (703) that is electrically connected to the circuit connector (113) at the lower hollow part of the linear guide rail (110); the electrical control box (700) is plugged into the plug interface (112) on the linear guide rail (110) through a plug-in post (704).
According to claim 9, a hip joint adduction and abduction training mechanism is characterized in that: the spindle (621) of the adduction and abduction gear (620) has a built-in fourth motor (740) for automatic adduction and abduction training; the fourth motor (740) is electrically connected to the electrical control box to achieve control.

Description

A hip adduction and abduction training mechanism Technical Field This utility model relates to a medical device, and more particularly to a hip joint adduction and abduction training mechanism. Background Technology With the rapid development of science and technology in today's society, people's living standards have greatly improved. China also faces the same problems as many other countries in the world: it is rapidly entering an aging society. Because many elderly people suffer from neurological or cerebrovascular diseases, the incidence of these diseases is increasing every year; among stroke patients, approximately 70% to 80% will experience varying degrees of lower limb motor dysfunction. In recent years, with the rapid development of intelligent rehabilitation technology, lower limb rehabilitation robot technology, through weight reduction and repeated training of standardized normal physiological gait, enables patients with lower limb movement disorders to undergo scientific and effective rehabilitation training, thereby restoring their walking ability. However, in clinical practice, this training model has been found to be less effective in restoring limb function for patients with muscle strength below grade three or those with Parkinson's disease. Exoskeleton systems, based on bionic principles and with a structure close to anatomy, can organically combine robotics technology with rehabilitation therapy, assisting patients in specific joint training and improving physical function; however, only 55% of patients receiving rehabilitation therapy regain their walking ability. Patients with neurological or cerebrovascular diseases often suffer from hip fractures due to gait abnormalities, making it extremely difficult to restore lower limb motor function. Hip fractures are also the most common lower limb fractures in the elderly. Surgery is the main treatment for hip fractures in the elderly to improve their walking ability, but only 40% to 60% of patients recover their activity level to the pre-fracture level after surgery. There are no reports on the use of robotic lower limb rehabilitation training for patients after internal fixation of hip fractures. To better facilitate the recovery of muscle strength in patients with lower limb dysfunction before standing training, and to make lower limb walking training feasible, thereby promoting the recovery of lower limb walking function, literature reports that experts have designed training modes for lower limb rehabilitation robots with two degrees of freedom and three combined degrees of freedom. One such mode involves core muscle training in a supine position. While this training program can promote safe and early lower limb rehabilitation, it still has shortcomings. The training mode of the two-degree-of-freedom lower limb rehabilitation robot is essentially a passive hip and knee training mode, failing to consider the ankle joint's own range of motion and training status. Foot training plays a crucial role in the rehabilitation of lower limb function. Although the three-degree-of-freedom lower limb rehabilitation robot is designed to meet the rehabilitation movements of the thigh, calf, and ankle joints, its drive mechanism only uses hydraulic drive and lacks resistance training, making it very difficult to restore lower limb muscle strength. To enable the researched and developed lower limb rehabilitation training device to be used for patients with lower limb dysfunction caused by neurological damage, hip fracture, or both stroke and hip fracture, for multi-joint, multi-range, anti-spasticity, and resistance training of the lower limbs, the applicant has also designed an intelligent multi-functional lower limb rehabilitation training device, with application number CN202210340685.9 and invention title "Intelligent Multifunctional Lower Limb Rehabilitation Training Integrated Machine". However, during further research and development, the following defects were found in the hip joint adduction and abduction training mechanism of this integrated machine: 1) Training can only be conducted under a power system. Clinical applications have shown that passive training can only be used for short periods, while active training is the best way to promote better recovery of limb function and overall physical and mental health in patients. 2) Only single-limb training mode is available; multi-limb coordination is not supported. 3) When performing hip adduction and abduction training, the range of motion on the transverse track should be limited to 0-5 degrees. If the range of motion is too small, the training effect will be limited. 4) The foot support has limited mobility and freedom of movement. During internal and external rotation training, the ankle and toes cannot plantarflex, and can only passively perform internal and external rotation under dorsiflexion. This prevents the muscles from being in a free and relaxed state for activity, which can easily