22 results about "Internal/external rotation" patented technology

The invention discloses an internal expanding and external rotating combined extrusion forming method and device for multiple inner ring ribs or bosses of a cylindrical part. The device comprises an internal expanding mechanism, an axial loading mechanism, a radial loading mechanism and a rotating loading mechanism. The internal expanding mechanism comprises a sectioning module consisting of first sectioning molds and second sectioning molds which are alternately arranged; the first split die is provided with an inner inclined surface matched with the inclined surface of the wedge block and a side inclined surface matched with the plane of the second split die; the bottom of the sectioning module is in sliding fit with the T-shaped groove of the base through the T-shaped hanging table. The method comprises the steps that an axial loading mechanism is started to drive a wedge block to move downwards, so that a sectioning module is synchronously expanded in the radial direction, the inner wall of a blank is extruded, and an inner ring rib or a boss is preliminarily formed; and the rotary loading mechanism is started to drive the internal expanding mechanism and the blank to rotate, meanwhile, the radial loading mechanism is started to drive the conical roller to continuously roll the outer wall of the blank, and final forming is completed.

The application discloses a child tibia tumor type rotary hinge knee joint prosthesis and belongs to the medical instrument field, which comprises: a femur end prosthesis, a tibia pad and a bionic joint connecting piece. The femur end prosthesis comprises a positioning plate body, the positioning plate body is provided with a connecting part and a butt joint rod, the tibia pad is detachably connected with the positioning plate body and is provided with a concave arc joint surface, the bionic joint connecting piece is provided with a butt joint hole and a rotating pin, the butt joint hole is movably connected with the butt joint rod through a ligament bionic mechanism, the bionic joint connecting piece is allowed to rotate around the butt joint rod and is allowed to reciprocate along the axis of the butt joint rod within a set distance range, and the ligament bionic mechanism generates an elastic restoring force when the bionic joint connecting piece and the butt joint rod relatively displace, the tibia end prosthesis is provided with a connecting hole and is rotatably connected with the rotating pin through the connecting hole, and the tibia end prosthesis is further provided with a convex arc joint surface. Through the above arrangement, the tibia end prosthesis is allowed to rotate around the butt joint rod and the rotating pin respectively, so that the internal and external rotation actions and the flexion action of the lower leg are realized.

The utility model relates to medical rehabilitation appliance technical field discloses a shoulder joint abduction external rotation support, including support main part, the end face upper portion of support main part rear end is the first circular surface that the radius is R1 is protruding upwards, the end face upper portion of support main body front end is the second circular surface that the radius is R2 is protruding upwards, R2 is greater than R1, the upper surface of support main body is the continuous circular surface of smooth connection support main body front end and rear end, and the continuous circular surface forms the support curved surface that gradually inclines upwards from rear end to front end, and the upper portion of support surface forms the support space of supporting forearm, and under the synchronous action of support curved surface and support platform, the upper arm and forearm of user are kept in the set abduction external rotation angle, and the setting of upper surface is the continuous curved surface and has also improved the comfort of the upper arm of user and the contact part of support main body, and the backstop plate set up in the rear end of support platform can avoid the shoulder joint backward escape when user changes the posture and lead to the change of external rotation angle.

Knee joint laxity testing apparatus includes a thigh cradle assembly, a shank cradle assembly, and a heel cradle assembly. The apparatus is configured to measure knee laxity in three planes of motion: anterior-posterior translations; varus-valgus rotations; and internal-external rotations. The thigh cradle assembly, shank cradle assembly, and heel cradle assembly are mounted on a common base. A thigh fixation system is attached to the thigh cradle assembly both at the proximal and distal ends to firmly stabilize the thigh in the thigh cradle. The patella pad and distal thigh fixation system are mounted on a U-bar assembly. The distal thigh fixation system includes two condyle pad adjustment arms upon which a respective condyle pad is mounted, and a patella pad mounted to a linear track on an underside of the U-bar assembly.

The application discloses a kind of measurement methods of knee joint tibia static front and rear displacement, belong to medical image technology field, acquisition patient MRI image data: using MRI equipment to scan patient knee joint, obtain MRI image data;Patient takes supine position, and places a custom pillow below popliteal fossa, to support knee joint in relaxed state in the posture of extension, external rotation 15 °;MRI scanning obtains magnetic resonance image data, including sagittal position, coronal position and axial position sequence.The turning point of Blumensaat line to femoral condyle and the relative position of tibial platform are used in the application to evaluate tibial static front and rear displacement.In MRI sagittal plane, the turning point divides tibial platform into two segments.The ratio of the length of the front segment of tibial platform to the length of tibial platform is defined as BT index.Using this method can more simply and effectively characterize and quantify knee joint tibial static front and rear displacement, to provide a more accurate measuring means for clinical work and related research.

The invention provides a man-machine compatible elbow joint rehabilitation robot, and relates to the technical field of medical instruments. The human-machine compatible elbow joint rehabilitation robot comprises an elbow joint flexion / extension active movement unit, an elbow joint inward rotation / outward rotation active movement unit, an elbow joint passive movement unit and a hand passive movement unit. Some passive motion pairs are additionally arranged at the man-machine connecting position, and the man-machine compatibility requirement can be met without strict alignment of machine joints and human body joints through motion of the passive free pairs. The series elastic driver is added between the driving motor and the load, the elastic characteristic of the tendon is simulated through the series elastic driver to improve the energy efficiency, in addition, part of energy is stored and then released slowly when the motor is started and stopped and is accidentally impacted, the time of the whole process that force generated by the motor acts on a patient is prolonged, and the energy efficiency is improved. The effect of reducing impact on the body of the patient is achieved, secondary injury to the patient when the machine is started and stopped is effectively avoided, and discomfort of the patient is reduced.

The invention relates to the technical field of rehabilitation robots, in particular to a flexible driving upper limb exoskeleton device with bilateral switchable configurations, which comprises a base component, a flexible driving component, a platform supporting component and an upper limb exoskeleton executing mechanism. The executing mechanism sequentially comprises a shoulder joint assembly, an upper arm component, a binding component, an elbow joint component, a front arm component and a wrist joint component. The shoulder joint assembly has three active degrees of freedom of adduction / abduction, inward rotation / outward rotation and flexion / extension, the elbow joint has an active degree of freedom of flexion / extension, and the wrist joint is of a passive rotation structure. According to the upper limb exoskeleton, rapid switching between the left upper limb and the right upper limb is achieved in a turnover installation mode, flexible driving and Bowden cable transmission modes are adopted, a driving unit is arranged away from an upper limb body, and the man-machine interaction safety is improved. Through an upper arm and front arm length adjustable structure, a platform supporting part height adjustable structure and a base part horizontal adjustable structure, the human body adaptability of the exoskeleton is improved.

FIELD: traumatology; orthopedics.SUBSTANCE: used for arthroscopy of the hip joint to eliminate Cam or combined types of femoroacetabular impingement. A proximal anterolateral port is created to the peripheral portion of the hip joint, which is used as a viewing port at the beginning of the operation; 4 cm distal and 2 cm lateral to the intersection of the midline of the femur and the perpendicular drawn to it through the apex of the greater trochanter, an anterior port is created, which is used as an instrumental port at the beginning of the operation. The deformation zone is brought to the bone burr, changing the positions of flexion and extension, internal and external rotation of the lower limb, and until the appearance of spring resistance of the fibers of the lateral joint capsule and the ileofemoral ligament, resection of excess bone mass of the anterior surface of the proximal femur within the boundaries of the Cam-deformation is performed. The viewing and instrument ports are changed and the deep fibers of the proximal joint capsule and the ileofemoral ligament are released from the acetabulum. In the presence of Pincer deformity, soft tissues are removed to visualize excess bone mass within the boundaries of the Pincer deformity, and resection of excess bone mass of the anterolateral edge of the acetabulum within the boundaries of the Pincer deformity is performed until radiographic visualization of the absence of intersection of the anterior and posterior edges of the acetabulum. The viewing and instrument ports are replaced. An arthroscope is positioned on the outer edge of the joint capsule fibers, and bone resection of the posterolateral surface of the proximal femur is completed within the boundaries of the Cam deformity by inserting a bone burr from the skin incision of the anterior port into the capsule opening of the proximal anterolateral port, preserving the fibers of the joint capsule and the ileofemoral ligament.EFFECT: method ensures correction of the proximal femur within the boundaries of the Cam-deformation while maintaining the integrity of the structures of the passive capsular-ligamentous stabilizers and eliminates the development of complications in the form of microinstability of the hip joint, anterior dislocation of the femoral head, heterotopic ossification due to maintaining the integrity of the structures of the passive capsular-ligamentous stabilizers and eliminating the development of microinstability of the hip joint, anterior dislocation of the femoral head and heterotopic ossification.1 cl, 1 ex

An insole core material for foot support. On the upper surface of the core material, multiple tarsal support portions are formed by three-dimensional ridges that provide corrective support for the skeletal alignment of the foot, corresponding to the positions and heights of multiple tarsal bones. When the upper, lower, or both surfaces of the core material have following grooves or following ridges that follow the movement between the tarsal support portions, it can flexibly accommodate flexion, internal rotation, and external rotation movements. A protruding structure, functioning as a corrective fulcrum, can be provided at a position corresponding to the lower part of the cuboid bone. On the lower, upper, or both surfaces of the core material, one or more reinforcing grooves can be provided to adjust the balance between the overall rigidity and flexural flexibility of the core material and to distribute pressure on the sole of the foot. Optimal support height is achieved by utilizing a structure extending to the base of the metatarsals and a setting based on a mathematical formula using correction coefficients.

This invention discloses a non-orthogonal design five-DOF isokinetic muscle strength assessment and rehabilitation platform for the shoulder joint, relating to the technical field of isokinetic muscle strength assessment and joint rehabilitation equipment. The device includes a two-DOF acromioclavicular joint, a sternoclavicular joint, and a three-DOF glenohumeral ball-and-socket joint; it comprises four active degrees of freedom and one passive degree of freedom, forming a five-DOF system, including the two-DOF acromioclavicular joint, the sternoclavicular joint, and the three-DOF glenohumeral ball-and-socket joint. The two-DOF acromioclavicular joint and the sternoclavicular joint are connected to the three-DOF glenohumeral ball-and-socket joint via fasteners. This invention solves the problem of the limited rehabilitation and assessment paradigms of traditional single-joint, single-DOF isokinetic instruments. It enables multi-DOF muscle strength assessment and rehabilitation training of the shoulder joint in adduction, abduction, internal and external rotation, and extension and flexion without the need to replace the mechanical adapter. It fully considers the actual degrees of freedom of the shoulder joint and adopts a non-orthogonal base structure design, improving the accuracy of joint muscle strength assessment and the efficiency of rehabilitation.

The invention discloses a forearm wearable device based on a four-rod two-cable tensioning structure, and belongs to the technical field of upper limb wearable assisting equipment. The device mainly comprises a forearm rotating mechanism and a wrist self-recovery mechanism which are coaxially mounted. The front arm rotating mechanism is composed of an upper fixing ring, a three-rod parallel mechanism and three four-rod two-cable tensioning integral units distributed at equal intervals. The stretch-draw overall unit and the three-rod parallel mechanism cooperate to achieve multi-position steady-state switching and elastic power assisting in the internal rotation / external rotation movement of the front arm. The wrist self-recovery mechanism comprises a hand supporting ring, four wrist supporting blocks, four branch chains and four elastic ropes, a two-degree-of-freedom parallel tensioning structure is formed, and assistance, buffering and automatic reset of wrist bending and stretching and adduction and abduction movement are achieved. The device combines a tensegrity structure and a rigid parallel mechanism, has the characteristics of flexibility, stability and light weight, can be matched with a human body movement mechanism, and improves the wearing comfort and safety.

The present application relates to the technical field of medical rehabilitation equipment, and particularly relates to a digital knee joint rehabilitation training device, which comprises a thigh supporting plate and a shank supporting plate, and a bionic joint mechanism is arranged between the thigh supporting plate and the shank supporting plate; the bionic joint mechanism comprises a flexion and extension driving assembly, an internal and external rotation resistance assembly and a forward and backward translation assembly; the flexion and extension driving assembly, the internal and external rotation resistance assembly and the forward and backward translation assembly are used for driving the knee joint to perform a combined motion of flexion and extension, internal and external rotation and forward and backward translation respectively. The device further comprises a control system and a damping assembly used for providing training resistance, and the control system is in signal connection with the damping assembly; the control system provides adjustable resistance training for at least one of the flexion and extension, the internal and external rotation and the forward and backward translation of the knee joint by cooperatively controlling the damping force of the damping assembly. The present application not only guarantees early safe training, but also promotes late muscle strength enhancement, and adapts to dynamic requirements of different rehabilitation stages.

The present application mainly relates to an exoskeleton device and a hip joint structure thereof, the hip joint structure comprising a first hip joint assembly and a correction structure, the first hip joint assembly being arranged to assist the hip joint of a user to perform internal / external rotation movement in a wearing state, and comprising a hip internal / external rotation seat and a hip internal / external rotation shaft, the hip internal / external rotation shaft being arranged to rotate relative to the hip internal / external rotation seat, and the correction structure being arranged to provide a reverse force during rotation of the hip internal / external rotation shaft relative to the hip internal / external rotation seat. The hip joint structure provided by the present application can assist the hip joint of a user to perform internal / external rotation movement in a wearing state through the first hip joint assembly, so as to meet the requirements of walking and other movements, and can provide a reverse force during internal / external rotation movement of the first hip joint assembly through the correction structure, so as to restore the first hip joint assembly to zero position, thereby assisting the user to correct the gait of walking and avoiding the user from falling down due to unstable center of gravity.

The application provides a flexible hand rehabilitation exoskeleton and a control method thereof, and the exoskeleton is composed of a dorsal shell, four-finger abduction-adduction driving wire ropes, four-finger abduction limiting wire ropes, a finger driving device, a thumb metacarpal bone internal-external rotation driver, a thumb abduction-adduction driver and the like. The wire ropes are pulled by external motors to pull the fingers, so that the four-finger abduction-adduction action training is realized, and the thumb multi-degree-of-freedom training can be realized by using the thumb abduction-adduction driver and the thumb metacarpal bone internal-external rotation driver. The application has the advantages of compact structure, high integration, convenient carrying, light weight, thumb multi-degree-of-freedom training and the like.

The invention discloses a bionic hip joint and a robot. The bionic hip joint comprises a bony structure, a clutch decoupling transmission mechanism and a supporting mechanism. The bony structure comprises a humanoid acetabulum and a humanoid femur; the humanoid acetabulum is mounted on the supporting mechanism; one end of the clutch decoupling transmission mechanism is mounted on the supporting mechanism, and the other end of the clutch decoupling transmission mechanism is mounted on the humanoid femur; the clutch decoupling transmission mechanism is used for achieving transmission and interruption of power, and when the power is transmitted, one action of abduction, adduction, external rotation, internal rotation, stretching and buckling is completed.

The utility model discloses an adjustable post-operation external rotation prevention supporting device for lower limbs. The adjustable post-operation external rotation prevention supporting device comprises a first supporting frame and an adjustable supporting mechanism. The number of the first supporting frames is two, the front ends of the first supporting frames are rotationally connected with second supporting frames through first pin shafts, and height adjusting mechanisms are arranged between the first supporting frames and the vertically adjacent second supporting frames; the adjustable supporting mechanism comprises a first supporting rod and a second supporting rod, the first supporting rod is connected between the rear ends of the two second supporting frames through bolts, extension frames which are symmetrically distributed left and right are arranged on the front side of the second supporting rod, the second supporting rod is fixedly connected between the two extension frames, and the outer portion of the second supporting rod is rotationally connected with a pedal through a rotating base; the adjustable supporting mechanism further comprises a rotary knob, a lead screw, a sliding block and an adjusting rod, the lead screw is rotationally connected between the first supporting rod and the second supporting rod, and according to the adjustable lower limb post-operation external rotation preventing supporting device, the angle and height of the pedal can be adjusted, and using is more convenient.

The utility model relates to a body position placing and fixing device for a stroke hemiplegic patient. The body position placing and fixing device comprises a body position pad, a scapular suspension groove, a caudal vertebra suspension groove, a turning-over assembly, a heightening assembly and a foot fixing assembly. A turning-over assembly and a heightening assembly are installed on the top face of the body position pad in a sewing mode, a scapular suspension groove is formed between the body position pad and the turning-over assembly, and a caudal vertebra suspension groove is formed in the outer surface of the body position pad. The shoulder blades and the caudal vertebrae of the patient are in a suspended state, the shoulder blades and the caudal vertebrae of the patient are effectively prevented from being bruised, the use safety of the patient is guaranteed, when the patient is in the side body position, the arms of the patient are stored in the shoulder blade suspension grooves and prevented from being pressed, bruising caused by the fact that the arms are pressed when the patient turns over is prevented, and the back and the legs of the patient are stably supported; and the body position placing and fixing device is integrally manufactured, so that the attractiveness is ensured, the injury caused by inward and outward rotation of the feet of the patient is prevented, and the use safety of the body position placing and fixing device is ensured.

The utility model discloses a variable included angle deep magnetic therapy racket head, which relates to the technical field of medical equipment, and comprises a left coil module, a right coil module, a rotating shaft and a rotating support bracket, the left coil module and the right coil module are rotatably connected, and a rotating mechanism is arranged at the joint; the rotating mechanism comprises a rotating shaft and a rotating supporting support, the rotating shaft is arranged at the joint of the left coil module and the right coil module in a penetrating mode, and the two ends of the rotating shaft are arranged on the rotating supporting support. The utility model has the advantages that the single coil is independently assembled and designed, the included angle of the coil can be adjusted through external rotary connection and flexible connection of the electric wire, so that the device is suitable for adjustment of different included angles, is suitable for treatment of different users, and is wider in overall application range and better in actual application effect.

The application discloses a kind of forearms wearable devices based on four-pole two cable tension structure, belong to upper limb wearable power-assisted equipment technical field.It mainly includes coaxial installation forearm rotating mechanism and wrist self-recovery mechanism.Forearm rotating mechanism is constituted by upper fixed ring, three-pole parallel mechanism and three equidistant distribution four-pole two cable tension integrated unit.Tension integrated unit and three-pole parallel mechanism realize multi-position steady-state switching and elastic power in forearm internal rotation / external rotation movement in cooperation.Wrist self-recovery mechanism includes hand support ring, four wrist support blocks, four branch chains and four elastic ropes, forms two-degree-of-freedom parallel tension structure, realizes the assistance, buffering and automatic reset of wrist flexion and extension and adduction and abduction movement.The device combines tension integrated structure and rigid parallel mechanism, has compliance, stability and lightweight characteristics, can match human movement mechanism, improve wearing comfort and safety.

The application relates to the field of rehabilitation auxiliary training machines, in particular to an arm-wrist hybrid upper limb rehabilitation robot. A planar motion module is connected with an electric push rod of a turnover motion module through upper connecting ears at the bottom of a motion platform, one side of the bottom of the planar motion module is hinged with a rotating shaft, a fifth bearing and an eighth bearing matched with the turnover motion module through a bearing block, the electric push rod drives the planar motion module to swing around the rotating shaft to complete elbow flexion / extension; an exoskeleton wrist module is installed on an end effector of the planar motion module through a wrist joint base, a handle held by a palm is installed on an internal-external rotation component of the exoskeleton wrist module, the wrist joint is made to complete internal rotation / external rotation, palm flexion / back flexion, ulnar deviation / radial deviation through the exoskeleton wrist module, the end effector has 2 degrees of freedom, rehabilitation training is simultaneously conducted on the whole upper limb of a patient through cooperation with the exoskeleton wrist module, various rehabilitation actions are realized, and the rehabilitation needs of different patients are met.

A rigidity-flexibility integrated multifunctional lower limb rehabilitation training device, comprising a base (100), a flexion-extension support (200), a hip and knee joint flexion-extension active training control mechanism (300), an ankle joint dorsiflexion-plantarflexion training mechanism (400), a hip and ankle joint internal-external rotation active training mechanism (500) and a hip joint adduction and abduction active training mechanism (600). The device mainly comprises a flexion-extension hand pull cord (310), a foot pedal (320) and a foot pedal pull cord (330); a support plate (410) and an elastic part (420); a support frame (510), an internal-external rotation training arc-shaped track (520), an internal-external rotation roller (450) and an internal-external rotation training pull cord (530); and an adduction and abduction training arc-shaped track (610), an adduction and abduction gear (620) meshed therewith and an adduction and abduction training pull cord (630). The lower limb core muscle group rehabilitation training device enables early implementation of multi-joint and multi-degree-of-freedom training integrating passive, assistive and active modes in a supine position, and can simulate gait training in the supine position, thereby effectively promoting early rehabilitation of patients.