14 results about "Medial rotation" patented technology

The invention relates to the technical field of arthroscopic surgery instruments, in particular to a support for a sports medicine arthroscopic surgery, which comprises a support, a lifting platform and a leg fixing mechanism, and the lifting platform locks the height position of the leg fixing mechanism on the support through a limiting bolt; the leg fixing mechanism comprises a fixed frame fixedly connected with the lifting table and a movable frame hinged through a rotating connector. The pull rope is wound around the guide wheel in the sliding rail box to be connected with the shank binding belt, and when the knee joint bends and stretches, the second spring pushes the sliding block to move in a self-adaptive mode; during knee bending, the spring extends to compensate looseness of the pull rope; when the knees stretch, the springs are compressed to absorb redundant tension. The tensile force is always perpendicular to the shank axis through mechanical decomposition, and lateral shearing force is eliminated. A spring dynamic compensation mechanism maintains constant upward effective component force, pulling force direction deviation caused by a traditional fixed fulcrum is avoided, unexpected internal rotation during shank lifting is fundamentally restrained, and knee joint ligaments are protected against abnormal stress damage.

The present invention discloses an active upper limb exoskeleton robot, belonging to the field of exoskeleton robot technology, comprising: a back exoskeleton, a left arm exoskeleton, and a right arm exoskeleton. The back exoskeleton is a flexible structure, the front surface of which contacts the human back, and can bend and deform along with the human spine when the human body bends. The left arm exoskeleton and the right arm exoskeleton are symmetrically arranged on either side of the back exoskeleton and are respectively rotatably mounted on the top of the back exoskeleton via shoulder joints. The shoulder joints have three degrees of freedom: flexion / extension, internal rotation / external rotation, and adduction / abduction, and the rotation axes of the three degrees of freedom are respectively consistent with the rotation axes of the corresponding degrees of freedom of the human shoulder joint. The robot realizes flexion / extension, internal rotation / external rotation, and adduction / abduction movements, and the robot's degrees of freedom of movement are consistent with the human joint's degrees of freedom. The elbow joint has one degree of freedom. The elastic lumbar vertebra can adapt to the bending and deformation of the human lumbar vertebra, increase the bending range, and improve wearer comfort.

[Problem] During a lowering exercise according to the prior art, changes in upper-limb (forearm, elbow joint, and shoulder joint) movement are such that, since the rotation axis of a grip part is fixed in the vertical direction, the hand rotates around the vertical axis together with the grip part as the lowering exercise is executed, and the shoulder joint continues to internally rotate. As a result, the forearm keeps inclining forward, thereby restricting subsequent extension acceleration slightly rearward of the body. [Solution] Provided is a training machine with which training is performed by moving an arm unit against the weight of a back weight, the arm unit being connected to at least one back weight via a cable and vertically movable along a guide column. A grip part of the arm unit is configured to rotate around an axis substantially orthogonal to the guide column axis. A training machine can thus be provided which can accommodate changes in the inclination angle of the hand and does not restrict extension movement when the upper limb is extended while being lowered.

The invention provides a bionic total ankle joint replacement prosthesis, and belongs to the technical field of medical instruments. Comprising a talus prosthesis, a tibia prosthesis and a sliding liner arranged between the talus prosthesis and the tibia prosthesis, a second reinforcing assembly fixed with a tibia and the sliding liner is arranged on the tibia prosthesis, a cambered surface groove is formed in the top of the tibia prosthesis, and the top of the talus prosthesis is movably matched with the bottom of the sliding liner. According to the ankle joint rehabilitation device, the natural structure of the ankle joint of the human body is simulated, the normal movement function of the joint can be recovered, the joint movement is more flexible and natural, and multi-direction movement in the front-back direction, the left-right direction and other directions is formed; the functions of introversion, eversion, inward rotation, outward rotation and movement in other directions of the whole bionic total ankle joint replacement prosthesis are achieved, the movement range of the whole bionic total ankle joint replacement prosthesis is widened, the multidirectional bionic function is achieved, and the diversified requirements of daily life of patients are met.

Systems and methods for analyzing lower body movement in low stress and loaded states and selecting footwear are disclosed herein. A system configured in accordance with embodiments of the present technology can include, for example, a plurality of devices for determining movement and a controller. The devices for determining movement, such as markers, sensors, or image capturing devices, can be used to detect lower body movement of a human subject, including inward and outward knee motion and tibia rotation. The controller can be configured to record lower body movement of the human subject in an unloaded state and a loaded state. The controller can further be configured to determine a trend corresponding to a change in the lower body movement from the unloaded state to the loaded state. Based on this trend, the system can select footwear characteristics that counteract any trend away from the lower body movement in the unloaded state.

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 present patent document relates to automatic equipment for performing orthopedic and physiotherapeutic procedures for passive motion of the knee joint (patellofemoral and tibiofemoral), incorporating three motion units: knee flexion and extension motion unit; internal and external rotation motion unit of the knee; and a multidirectional patellar mobilization unit (lower-upper and medial-lateral), an external support for multidirectional patellar mobilizer and a control unit. The flexion and extension motion unit is comprised of a mechanical and electronic structure on which the leg rests during use thereof and has at least two supports for supporting the leg located in the back region of the thigh and in the back region of the leg (calf); the internal and external rotation motion unit of the knee is comprised of a structure with a support for the leg and a support for the foot region (sole region) coupled to a knee flexion and extension motion unit; and the multidirectional patellar mobilization unit is comprised of a receptacle on which a retainer and an actuating element are disposed.

The invention relates to a portable exoskeleton for an upper limb, with n DOF (degrees of freedom), for patients recovering physically from COVID-19, having n DOF, wherein said exoskeleton comprises rigid plates on the outside of the arm which are rigid parts arranged in the upper part; joints (elbow, shoulder, clavicle) which connect the rigid plates and allow their movement in all directions in the form of flexion, extension, abduction, adduction, internal and external rotation; guides arranged on top of each of the rigid plates from the back to the forearm; bus cables for information, which pass through the guides starting from the end of the forearm up to the back; supports (straps) located on rigid plates of the exoskeleton, which secure the structure to the body; sensors connected to the information bus cables which terminate in the embedded system which are arranged in the rigid plates of the linkage points or rigid plates suitably located along the entire arm.

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.

The invention belongs to the technical field of surgical auxiliary positioning, and discloses an auxiliary positioning device for a tibia longitudinal osteotomy position in unicompartmental knee arthroplasty, which comprises an operating bed, an auxiliary positioning part is arranged on the operating bed, and the auxiliary positioning part comprises an inclined plate support fixedly connected to the operating bed. A fixed clamping plate is hinged to the top end of the inclined plate support, and a rubber clamping plate is fixedly connected into the inner wall of the fixed clamping plate; under the driving of an electric cylinder, an arc-shaped top plate indirectly rotates and generates up-and-down offset motion, so that when an arc-shaped rubber abutting plate is driven to passively move upwards, the shanks of a patient are lifted to rotate inwards and the flexion and extension gap between the femur and the tibia is measured, two shank fixing frame plates can expand in advance, and the motion of the two shank fixing frame plates is prevented from generating interference; therefore, the problem that an assistant manually drives an unconscious patient to do leg flexion and extension movement is solved, and meanwhile, the auxiliary positioning effect of operation on thighs and shanks of the patient can be achieved.

The invention discloses a double-arm symmetrical collaborative lightweight multi-degree-of-freedom upper limb assisting exoskeleton and an intelligent control method thereof. The double-arm symmetrical collaborative lightweight multi-degree-of-freedom upper limb assisting exoskeleton comprises a wearing device, a left side arm and a right side arm, each of the left side arm and the right side arm comprises a shoulder component, a big arm component, an elbow component, a forearm component and a wrist component which are sequentially connected through a connecting rod; the shoulder component has three degrees of freedom of forward flexion / backward extension, adduction / abduction and inward rotation / outward rotation; the elbow component has two degrees of freedom of flexion / extension and inward rotation / outward rotation; the wrist component has two degrees of freedom of wrist joint metacarpal flexion / dorsal flexion and wrist joint ulnar deflection / radial deflection; the single arm has seven degrees of freedom, and the double arms are overlapped to form fourteen degrees of freedom. According to the exoskeleton control system, an intelligent PD control method based on an RBF neural network and quasi-time delay estimation is adopted, the movement of each joint is more accurately and automatically adjusted according to the movement intention of a user and an external load, and the intelligence and humanization level of the exoskeleton is improved.

The invention discloses a use method of an intelligent humpback rehabilitation mattress, during rehabilitation physiotherapy, the spine of the body of a patient lies on a left rehabilitation pad and a right rehabilitation pad, and the two arms of the patient are lifted and bent, so that the shoulder joints of the patient are expanded and rotated outwards, and the flexure muscle groups including pectoralis major and major lesser are pulled through the body position; internal rotation and adduction of shoulder blades are formed on the back surface, wing-shaped shoulder blades are improved, and humpback caused by overlarge curvature of the thoracic vertebra on the sagittal plane is adjusted; the left rehabilitation pad and the right rehabilitation pad are controlled to swing through the lifting device, the included angle between the left rehabilitation pad and the right rehabilitation pad is controlled to be within the set physiotherapy included angle range of 130-180 degrees, then the gravity of the back of the human body is utilized, the left back and the right back of a patient move and stretch downwards relative to the left rehabilitation pad and the right rehabilitation pad, and the left rehabilitation pad and the right rehabilitation pad are fixed. Therefore, painless stretching rehabilitation physical therapy can be performed on a humpback patient, and the back gradually recovers to a normal healthy state; and meanwhile, when people, especially students, lie on the mattress to have a rest, the occurrence of humpback can be prevented.

The invention aims at providing a patient limb multi-angle adjusting device for examination, and relates to the technical field of medical instruments, rotation of a back plate can be controlled through stretching and retracting of a telescopic supporting plate, the angle for supporting the back of a patient is adjusted, and the patient is supported to be in a side-lying position or a semi-side-lying position; the foot sole assembly can be driven to move backwards by sliding the mounting block to drive the foot sole to move backwards, so that the knee joint is slightly bent, and the arc-shaped plate can be driven to slide in an arc-shaped mode by rotating the worm on the mounting block to drive the foot sole assembly to deflect. Therefore, the knee joint of the patient is driven to extend outwards to expose popliteal fossa and the rear side of the shank so as to scan popliteal arteriovenous, posterior tibia arteriovenous and calf intermuscular vein. The knee joints are driven to adduction, so that anterior tibialis veins and fibular arterioveins can be The lower limbs can be straightened by sliding the mounting block, and the sole assembly is adjusted to deflect by rotating the worm, so that knee joints are straightened, extorsion is performed to inspect knee medial collateral ligaments and medial meniscus, and intorsion is performed to inspect lateral collateral ligaments.