43 results about "Elbow flexion" patented technology

The invention provides a wearable 7-degree-of-freedom upper limb movement rehabilitation training exoskeleton which comprises a supporting rod and an exoskeleton training device which are fixed on a base, wherein the exoskeleton training device is formed by connecting a shoulder adduction / abduction joint, a shoulder flexion / extension joint, a shoulder medial rotation / lateral rotation joint, an elbow flexion / extension joint, an elbow medial rotation / lateral rotation joint, a wrist adduction / abduction joint and a wrist flexion / extension joint in series. The joints are directly driven by a motor, wherein the shoulder and elbow rotating joints are additionally provided with a spur-gear set, the structure is simple, and the response speed is high. Compared with the prior art, the exoskeleton provided by the invention has more degrees of freedom of movement and can adapt to standing and sitting training. The length of an exoskeleton rod can be adjusted according to the height of a patient, thereby ensuring the wearing comfort. A spacing structure is adopted by the joints, thereby improving the safety. Angle and moment sensors at the joint points can acquire kinematic and dynamic data ofeach joint in real time, thereby being convenient for physical therapists to subsequently analyze and establish a training scheme to achieve an optimal rehabilitation effect.

The invention belongs to the related technical field of joint stiffness measurement, and discloses an experimental platform and a measurement system for measuring the flexion-extension stiffness of an elbow joint. The experimental platform includes a bottom plate and a big arm fixing unit, a small arm fixing unit and a driving force unit arranged on the bottom plate, wherein: the big arm fixing unit fixes the big arm, the small arm fixing unit fixes the small arm, the big arm fixing unit and the small The arm fixing unit is set at an included angle so that the upper arm and the forearm are fixed at a corresponding included angle, and the driving force unit provides pulling force to the forearm to change the angle between the forearm and the upper arm; the driving force unit includes The fixed pulleys on both sides of the unit, the load is suspended on the fixed pulley, the load is connected with the fixed unit of the forearm through a traction rope, and the bottom of the fixed unit of the forearm is equipped with rollers to realize the bending of the forearm in both forward and reverse directions . The present invention solves the problem that the stiffness measurement includes the self-weight of the forearm and that it cannot be bent in two directions.

The invention relates to a portable elbow bending and knee bending exerciser, in particular to a portable elbow bending and knee bending exerciser which is compact and simple in structure, convenient and simple to operate and can realize relatively stable loaded elbow bending and knee bending actions. The portable elbow bending and knee bending exerciser comprises two support plates, two joint plates and a torque spring, wherein each support plate is connected to the corresponding joint plate through a connecting rod; the two joint plates are connected through a shaft hinge, and the two support plates are located on the same side; the torque spring is fixed with the shaft hinge through the joint plates, and metal wires extend out of two ends of the torque spring respectively and are fixed on the corresponding support plate; a top plate is arranged on the joint plate on the same side with the support plates.

The invention relates to a constant-strength elbow-bending and knee-bending exerciser, and particularly relates to a constant-strength elbow-bending and knee-bending exerciser which has a small and simple structure, can realize relatively stable constant-strength load elbow and knee bending actions, and is convenient and simple to operate. The constant-strength elbow-bending and knee-bending exerciser comprises the following parts: a base, a bracket, a supporting plate, a top plate, a plurality of load blocks and a rope, wherein the bottom end of the bracket is connected onto the base; a steering wheel is arranged on the bracket; the right end of the bracket is connected with a winder; a rope winding shaft is arranged at the center of the winder, and the winder and the rope winding shaft rotate synchronously; the supporting plate is connected onto the winder through a connecting link; the top plate is connected with the tail end of the bracket; the plurality of load blocks can be freely combined; one end of the rope is connected with the load blocks, and the other end of the rope is connected onto the rope winding shaft through the steering wheel.

The invention requests protection of a wearable forearm active rehabilitation training exoskeleton device with myoelectric perception and belongs to robot field. The wearable forearm active rehabilitation training exoskeleton device consists of an exoskeleton support, a forearm rotation mechanism, an elbow flexion-extension mechanism, a driving motor and a myoelectric signal acquisition device, and can achieve the active rehabilitation training with two degrees of freedom for elbow flexion-extension and arm rotation. A large forearm support is easier to wear with a semi-open structure, and themyoelectric signal acquisition device is embedded in a key position of lining to collect arm myoelectric signals during the process of the rehabilitation training, and then motor movements of each joint can be adjusted according to the muscle tension, improving the security and efficiency of training. The forearm rotation mechanism adopts two sets of motor-bevel gear transmission, achieving forearm flexion-extension movements through synchronous coordinated movements of two motors. The forearm rotation mechanism adopts the driving mode of wire, and the forearm rotation angle is 180 degrees. The wearable forearm active rehabilitation training exoskeleton device with the myoelectric perception is more convenient, safer and more effective in rehabilitation training and can be widely used inhospitals, communities and families.

The invention discloses an auxiliary repositor for distal radius fracture. The auxiliary repositor comprises an L-shaped elbow joint supporting plate, a horizontal supporting plate, a slideable waist joint supporting plate and a hand sliding fixing handle. An arm of a patient is subjected to elbow flexion by 90 degrees and then is put on the L-shaped elbow joint supporting plate, and an upper arm and a front arm are fixed on the L-shaped elbow joint supporting plate through an upper arm bandage and a front arm bandage respectively; the patient holds the hand sliding fixing handle with fingers, and a hand is fixed by a self-adhesion bandage; an adjusting bolt is rotated, and the slideable waist joint supporting plate moves away to achieve the effect of fracture site pull-out; then the hand sliding fixing handle is moved in an arc-shaped sliding groove, so that the arm reaches a palmer flexion or dorsiflexion angle needed for fracture stabilization; a fixed bolt is screwed, so that the hand sliding fixing handle is fixed. The auxiliary repository has a simple structure, is low in manufacturing cost, convenient to operate, stable in traction in the restoration process, and ideal in restoration effect, avoids redisplacement had, and meanwhile, reduces the working intensity and difficulty of medical staff.

The invention provides a volleyball ball corrector for elbow flexion, which includes a main rotating part, a pulling device, two sets of arm fixing devices and two sets of telescopic devices; one end of two elastic bands of each group of arm fixing devices is respectively fixed on the semicircular arm through a fixing buckle. The end of the ring; the threaded sleeve of each group of telescopic devices is threadedly matched with the first screw rod; the arc top of each semicircular arm ring is fixed with two first mounting plates, and the threaded sleeve is fixed with the first rotating block, which is connected with the two second A mounting plate is rotatably connected; the other end of each first screw rod is fixed with two joint plates, and the main rotating part is rotatably connected with the two joint plates of the two sets of telescopic devices; the pulling device includes a spring and two second rotating blocks The top of each fixed plate is fixedly provided with two second mounting plates, each second rotating block is rotationally connected with the two second mounting plates, and the two ends of the spring are respectively fixed to one end of the two second rotating blocks. On the premise of not restricting the various movements of the trainer, the device can assist in the correction of elbow flexion and kicking the ball.

The invention discloses a four-degree-of-freedom rehabilitation mechanical arm device. The device is composed of the two parts including a base and a rehabilitation mechanical arm, wherein the rehabilitation mechanical arm is installed on the base. The rehabilitation mechanical arm is composed of a shoulder abduction joint, a shoulder flexion joint, an elbow flexion joint and a wrist flexion joint. After being collected, motion imaginary electroencephalograms are subjected to preprocessing, feature extraction and pattern classification, and dichotomous signals are obtained to serve as input signals of a mechanical arm control unit. The control unit outputs PWM waves to control a shoulder abduction motor, a shoulder flexion motor, an elbow flexion motor and a wrist flexion motor to rotate.The motion imaginary electroencephalograms are classified through an algorithm, and the singles are transmitted to the control unit. The control unit emits corresponding control singles. The control singles control the rotation of a servo motor. In the four-degree-of-freedom rehabilitation mechanical arm device, the structural design of the mechanical arm is simplified, and assembly and disassembly are convenient.