45 results about "Knee flexion" patented technology

This invention discloses a multi-position adjustable rehabilitation treatment bed, belonging to the field of medical device technology, including a support platform; a tray is provided on the support platform; a lifting adjustment mechanism is provided on the support platform to tilt the tray upwards; a head adjustment mechanism is provided on the front side of the tray to adjust the height of the patient's head; and a lower limb adjustment mechanism is provided on the rear side of the tray to adjust the patient's lower limbs in multiple positions. This invention enables rehabilitation movements such as standing up, leg raising, knee flexion, and head movement without requiring medical staff to manually lift and support the patient's limbs. It changes the traditional situation where rehabilitation exercises require multiple medical staff to operate together, effectively reducing the physical exertion of medical staff, saving the human resource cost of clinical rehabilitation, and solving the problems of high human resource input and high operational difficulty in traditional manual rehabilitation.

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.

The device comprises an elastic support, arc-shaped plates are arranged at the upper end and the lower end of the elastic support, the elastic support comprises an upper-section support body and a lower-section support body which are oppositely arranged up and down, and the upper-section support body and the lower-section support body are distributed in a V-shaped included angle state; the overall length of the upper-section support is smaller than that of the lower-section support. By arranging the elastic support, the deformation groove, the upper-section support and the lower-section support, when a patient wears the elastic support and performs squatting and rising action training, after the elastic support is stressed and deformed, a parallelogram structure can be exactly formed with the knee bending part of the patient, so that dynamic and static balance is achieved between the elastic support and the knee joint of the leg of the patient; therefore, symmetrical supporting and load transferring can be achieved, the stability of the patient during squatting and getting up is guaranteed, and the influence of horizontal bending and vertical bending between the knees of the patient and the elastic support can be reduced.

Disclosed herein is an orthopedic device and methods to aid in reducing weight or pressure on a portion of a subject's knee while maintaining stability and normal gait patterns following injury or surgery. Certain embodiments include a main shaft for use in an orthopedic device, wherein the main shaft includes a curved portion. In embodiments, the curved portion cures outwardly in the walking direction. The curvature can comprise a curvature that is consistent with the maximum knee flexion angle that is observed during the loading phase of the normal gait cycle. In embodiments, the device further comprises a handle portion and a foot, wherein the main shaft is disposed between the handle portion and the foot. Additional aspects include a method of promoting the healing or recovery in a subject following injury or surgery of the knee using any one or more of the orthopedic devices disclosed herein.

The invention provides a marathon running posture correction method based on Mediape and a random forest algorithm, and relates to the technical field of computer vision and pattern recognition. The method comprises the following steps: firstly, detecting 33 key skeleton nodes of a human body, calculating a knee bending angle, an arm swing amplitude, a trunk forward inclination angle, a flying height and a moving speed, and then optimizing the knee bending angle, the arm swing amplitude, the trunk forward inclination angle, the flying height and the moving speed through feature importance analysis, feature reduction and the like; a random forest algorithm is adopted for model training and evaluation, a UI interface is formed through test packaging, a real-time feedback APP capable of being implanted into a sports watch is built, and real-time feedback and correction of the marathon running posture are achieved.

Disclosed herein is an angled wall femoral component (500) of a cam-post knee arthroplasty system for posterior cruciate ligament (PCL) replacement total knee arthroplasty (TKA) or revision TKA (rTKA) procedures, such as cruciate ligament (CS), bilateral cruciate ligament (BCS), or posterior stabilization (PS) procedures. The angled wall femoral component may include a femoral box (502) configured to receive a tibial post (110) of a corresponding tibial component (100). The anterior wall (508) of the femoral box is angled anteriorly and may include an anterior cam (561). The anterior wall is angled anteriorly to allow clearance between the anterior side of the tibial post and the anterior wall, while allowing a movable engagement between the tibial post and the anterior cam during knee flexion and extension, to which the femoral component is implanted.

This surfboard is suitable for surfing by sitting on it, holding onto the handles, and maintaining balance while bracing your feet against the board. [Solution] The board comprises a board body 10 that can move forward on water, a seat 20 provided on the rear of the board body 10 on which a user U can sit, a handle 30 provided on the board body 10 in front of the seat 20 on which a user U can grasp, and a footrest 40 provided on the left and right sides of the seat 20 in the left-right direction behind the handle 30 on which a user U sitting on the seat 20 can place the soles of their feet U2 with their knees U1 bent.

The utility model relates to the technical field of medical instruments, in particular to an auxiliary limb exercise device which comprises a vehicle body provided with a base. A rotating shaft is rotationally connected to the middle of the vehicle body, and pedal assemblies are fixedly mounted at the two ends of the rotating shaft; wherein the lower portion of the bottom of the vehicle body is further connected with a carrying seat in a sliding mode, a driving assembly is arranged on the side edge of the carrying seat, and the driving assembly is used for driving the rotating shaft to rotate. In the automatic auxiliary mode, the pedals automatically rotate, the two legs of the user are pulled to bend knees in a reciprocating mode, the exercise requirements of the user with difficulty in knee bending in the early stage can be met, the two operation modes can meet the exercise requirements of the user in different periods, and therefore the applicability of knee bending exercise is greatly improved.

The utility model provides a knee joint postoperative walking aid and rehabilitation integrated device, and belongs to the technical field of rehabilitation. Comprising a first support and a second support, connecting plates are rotationally connected to the outer walls of the first support and the second support, half gears are fixedly connected to the outer walls of the first support and the second support, and the two half gears are meshed with each other; the elastic assembly is used for assisting the patient to do knee joint flexion and extension exercises, and the elastic assembly is connected with the first support and the second support. Through the arrangement of the elastic assembly, the knee joint bending and stretching training device can assist a patient in bending and stretching training at each stage after the knee joint operation, can force the knee joint to perform bending and stretching training at the initial stage of rehabilitation bending and stretching training, and can provide bending and stretching resistance and increase load of knee joint bending and stretching connection at the later stage of rehabilitation bending and stretching training, so that the rehabilitation training effect of the patient is improved; meanwhile, when the patient walks, the patient is assisted to stand.

A body state estimation system includes a sensor module that detects an inclination around a certain axis of a shoe, and an estimation unit that estimates an inclination state of the body of a wearer of the shoe based on a detection result from the sensor module. The estimation unit estimates, for example, a heel valgus angle, an ankle dorsiflexion angle, and a knee flexion angle of the wearer, using a regression model.

The utility model provides an inflatable protection pad, including leg pad, leg pad is from top to bottom is divided into silica gel soft pad, sponge layer and inflatable air bag, silica gel soft pad cladding is in the top layer of sponge layer, is provided with antiskid line, the recessed fit of sponge layer is set to human body patella, inflatable air bag is fixed in the bottom one end of sponge layer, adjusts own height through the inflation port and the air outlet of side end, the utility model changes the contact area of knee joint and bed surface, reduces the pressure intensity of knee joint surface when prone position, reaches the purpose that reduces, prevents pressure injury, can raise foot ankle part, makes ankle joint natural bending, foot tip natural droop, keeps lower limb function position, prevents blood vessel nerve injury, reduces the postural surgical complication, can make femoral shaft and pelvis keep certain flexion angle simultaneously, prevents overstretching, keeps functional body position, avoids nerve and blood vessel injury, has inflatable air bag, can cooperate with external air blowing equipment and adjusts ankle height according to actual condition, adjusts knee flexion angle.

This invention belongs to the field of hamstring length prediction technology. Specifically, it relates to a method for predicting the optimal hamstring length. This method generates curves of knee flexion angle versus hamstring length and curves of knee flexion angle versus knee flexion force through preprocessing, and verifies and outputs accurate optimal hamstring length. Then, it constructs a prediction model consisting of a global prediction model and a portrait prediction sub-model based on a person's profile. Finally, it calculates the matching degree between the person being evaluated and the portrait prediction sub-model, selects the corresponding model, and outputs the final prediction result. This invention improves the accuracy of determining and predicting the optimal hamstring length through hyperbolic collaborative analysis and verification to correct biases. Furthermore, it utilizes the portrait sub-model to adapt to specific groups and combines a matching degree adaptive calling strategy to achieve an optimal balance between prediction accuracy and evaluation efficiency. This method is suitable for scenarios involving sports injury prevention, rehabilitation program development, and sports training guidance.

A portable knee bend exercise apparatus which allows for controlled use of the knee joint for exercise movements so as to reduce or prevent the buildup of scar tissue and to strengthen muscles around the joint. The portable knee bend exercise apparatus includes a wedge body having a support portion suitable to receive the thigh of a user, a lip portion suitable to provide an axis of rotation about which a knee can perform extension and flexion, a tapering portion which allows for full knee flexion, a bottom portion, and a back portion suitable to couple with a seat on which a user in seated. Coupled with the wedge body is a strap member which is structured to both encircle the wedge body and extend above the top surface to selectively form a loop which can secure the leg of a user to the top surface.

This invention relates to the field of assistive medical technology, specifically to an assistive walking device and its monitoring system for postoperative hip replacement patients. The device includes a data acquisition module, a gait segmentation module, a posture assessment module, a behavior recognition module, and a monitoring instruction module. The data acquisition module collects a set of lower limb kinematic data from the patient. The gait segmentation module performs gait phase segmentation on the data, generating gait cycle division results. The posture assessment module uses a multilayer perceptron to construct a walking posture assessment model, analyzes joint stress on the gait cycle division results, and generates peak hip joint stress and compensatory knee flexion angles. The behavior recognition module identifies prohibited behaviors based on the above indicators, generating violation action markers and spatial coordinates. The monitoring instruction module generates a set of monitoring instructions, including voice prompts and vibration alert intensity parameters. This system enables precise monitoring of postoperative walking for hip replacement patients, assisting in standardized patient rehabilitation.

An apparatus for enhancing knee flexion and extension exercises by integrating dynamic movement and coordination across the upper body, core, and lower body. The apparatus includes a base platform with an adjustable backrest that supports the user's back. The apparatus includes multiple adjustable lever pads for knee extension and flexion exercises, each with customizable resistance via weight stacks and range controllers to ensure safety and comfort. A third lever pad allows for lateral hip flexion exercises, promoting engagement of core and hip muscles. These components are designed to accommodate users of varying sizes and fitness levels, while the apparatus facilitates multi-planar movement, improving neuromuscular coordination, balance, and reducing the risk of injury through natural, functional exercise patterns.

This application relates to the field of joint modeling technology, and discloses a method for assessing the risk of knee motion injury based on viscoelastic response finite element analysis. The method includes: acquiring magnetic resonance imaging data of the knee joint; performing grayscale thresholding to segment and reconstruct a three-dimensional structural model of the knee joint from sagittal and coronal images; performing surface smoothing to obtain a three-dimensional geometric model; setting bones in the three-dimensional geometric model as homogeneous, isotropic linear elastic bodies, cruciate ligaments and menisci as isotropic viscoelastic materials, and quadriceps tendons and patellar ligaments as stiff linear spring elements; meshing the three-dimensional geometric model; setting bone-to-bone and meniscus-to-femur contact as frictionless hard contact; setting the six degrees of freedom variation of the lower surfaces of the tibia and fibula to zero to establish a finite element model of the knee joint; performing knee flexion simulations at different angles and durations and detecting the viscoelastic response of the anterior cruciate ligament and meniscus; evaluating the influence of knee flexion angle and duration on the mechanical load of the knee joint soft tissues; and thus assessing the risk of injury. This application also discloses a knee sports injury risk assessment system based on viscoelastic response finite element analysis that implements the aforementioned method. This application can provide methods and basis for assessing the potential risk of knee joint injury during sports and for targeted treatment after injury.

The application provides a sports action correction and monitoring system based on image recognition and big data, and relates to the technical field of artificial intelligence.The data synchronization and fusion module uses big data processing technology to integrate multi-source data, eliminate space-time differences, and improve the accuracy and reliability of analysis results.The biomechanics solving module uses Lagrange equation to calculate the lower limb joint torque vector in real time, and realizes instant monitoring of the joint torque.The load optimization module uses Adam optimization algorithm to optimize the stride width and knee flexion angle through gradient descent method, minimizes the maximum joint torque, reduces the joint load of athletes, and prevents potential harm.The feedback display module transmits the optimized action parameters to wearable devices in real time, guides athletes to adjust actions in real time, and ensures the efficiency and safety of training.

An assistive device that can be worn in normal daily activities that improves dorsiflexion in stance phase and correct hyperextension of the knee to help restore a functional gait pattern. The device includes an attachable foot stirrup strap, two long heavy duty elastic cords with hooks to attach to the foot stirrup strap and loops to attach to a shoulder strap, a thigh strap with clamp that allows for adjustment of tension to overcome foot drop and promote knee flexion in the proper direction by providing a point for the elastic cords to cross without entangling. Further, the shoulder strap includes a shoulder pad for comfort and a buckle that allows for adjustment of tension. Furthermore, the foot stirrup strap may be detachably connected to a foot / shoe of the user with the help of elastic connectors or permanently attached to the shoe with the help of an adhesive.

Provided is a muscle strength measuring device capable of measuring the bending and stretching muscle strength of a lower limb at various limb positions (extorsion position, abduction position, intorsion position, adduction position, and the like). A muscle strength measuring device is provided with: a seating section on which a subject sits in a state in which the knees are bent at right angles; a load sensor; and a connection unit that, when the subject seated on the seating unit bends or stretches the lower limbs, connects the lower shank part of the subject seated on the seating unit and the load sensor so as to apply a force to the load sensor, and that, when the front-rear direction of the subject seated on the seating unit is set as an X-axis, connects the lower shank part of the subject seated on the seating unit to the load sensor so as to apply a force to the load sensor. The load sensor is provided so as to be capable of swinging about the X-axis when the vertical direction is defined as the Z-axis and the axis orthogonal to the X-Z plane is defined as the Y-axis.

The utility model discloses a double support protector based on ergonomics, including knitted protector, two ends of knitted protector are fixed with first elastic cover and second elastic cover respectively, the inside suture of knitted protector quick -drying cloth, the quick -drying cloth symmetry suture two left and right symmetry silica gel strip, the silica gel strip penetrates a plurality of heat dissipation holes, the quick -drying cloth penetrates a plurality of air holes, the outside fixed connection support piece of knitted protector. The utility model discloses through fixing silica gel strip in the inside of knitted protector, has increased the interval between the inside of knitted protector and the skin of user's leg, and then prevents the too close of knitted protector and the skin of leg, and the heat dissipation of leg skin is affected, and the support piece that sets up is convenient for to the angle and position of first arc steel strip and second arc steel strip adjust and fix, is convenient for to the angle of postoperative user's knee flexure and fixes, after loosening nut, can be convenient for patient's knee and carry out activity.

The utility model discloses a knee bending exercise auxiliary training device, which belongs to the technical field of rehabilitation training, and comprises a first supporting part, a second supporting part and a third supporting part, the second supporting part is used for supporting the knee joint, and the second supporting part rotates relative to the first supporting part; a bearing cavity; the sliding grooves are formed in the two side faces of the bearing cavity. One end of the crank connecting rod is mounted on two sides of the joint of the first supporting part and the second supporting part, and the other end of the crank connecting rod slides in the chute in a limited manner; and the rail bodies are symmetrically mounted in the bearing cavity. Through the hinge design of the second pedal plate and the elastic support of the compression spring, self-adaptive adjustment can be carried out according to the actual pressure of the legs and the feet of a patient. The personalized adaptation not only ensures the accuracy of training, but also remarkably improves the comfort level of the patient, reduces the discomfort in the training process, and a stable limiting and fixing mechanism is formed through the cooperation of the arc-shaped supporting plate, the locking concave block, the friction plate and the limiting block.

The utility model relates to the technical field of medical instruments, in particular to a knee bending posture keeping device for gastrointestinal endoscopy. The device comprises a back fixing mechanism, a leg fixing mechanism and a rotating mechanism, the rotating mechanism comprises a pair of connecting assemblies and a locking assembly; the connecting assembly comprises a U-shaped connecting piece, a rotating rod and a connecting rod; the locking assembly comprises a rotating gear, an outer gear, a limiting sub-assembly and a control sub-assembly. The control sub-assembly comprises a dust cover, a limiting sleeve, a guide rod, a rotating disc and a limiting clamping block. The limiting sub-assembly comprises a pushing column, a locking rod, a movable bottom plate and a reset spring. According to the device, the knee bending angle can be adjusted according to the flexibility of a patient, and the symptoms such as aching pain and cramp caused by the large knee bending angle are avoided as far as possible.

The utility model provides a multifunctional nursing chair which comprises a nursing chair body, an installation groove is formed in one end of the nursing chair body, a transmission shaft is movably installed on the inner wall of the installation groove through a bearing seat, and a containing plate is arranged at one end of the transmission shaft. Through the cooperative use of the mounting groove, the placing plate, the pedal, the electric telescopic rod, the moving frame, the push rod, rollers and a sliding groove, the multifunctionality of the nursing chair body is improved, so that when a patient sits on the nursing chair body and needs to do knee bending rehabilitation training, the patient can put feet on the pedal, then the electric telescopic rod is started, and the knee bending rehabilitation training is performed. According to the knee-bending rehabilitation training device, the electric telescopic rod adjusts the moving frame to push, then the push rod drives the roller to jack up the placing plate, so that the placing plate and the pedal are matched to spread the knees of the patient, then the electric telescopic rod is used for recovery, and then the operation is circulated, so that knee-bending rehabilitation training can be performed on the patient. The multifunctionality of the nursing chair body can be conveniently improved.

The utility model discloses a kind of doll skeletons, specifically related to the technical field of doll skeleton, including torso, arm and lower limbs, the top two sides of torso symmetry adopt arm connecting piece and have arm, bottom two sides are connected with lower limbs through lower limb connecting piece rotation connection lower limbs, the end of femur connecting piece away from torso is provided with the clamping block that is rotationally connected with the buckling groove of femur. Relative rotation between femur connecting piece and femur can be achieved, the twisting effect of lower limbs is simulated, and the connection characteristics of connecting cylinder are utilized, so that knee joint can make knee flexion and other actions around patella.

The utility model relates to the technical field of medical instruments, in particular to an arthroscopic surgery auxiliary device which is characterized in that a motor is installed at the top end of a device base, a ball screw is fixed to the output end of the motor, the surface of the ball screw is rotationally sleeved with a movable shell through threads, and a leg placing position is fixed to the top end of the movable shell; a knee placing position is hinged to one side of the leg placing position, a connecting rod is hinged to the bottom end of the knee placing position, fixing rods are arranged on the two sides of the connecting rod, arc-shaped grooves are formed in the surfaces of the fixing rods in a penetrating mode, and movable inserting columns are movably inserted into the arc-shaped grooves. The knee placement position, the connecting rod, the fixing rod, the movable inserting column and the nut are used in cooperation, the purpose of being suitable for the knee bending degree of a patient can be achieved, and a doctor can obtain a clearer and more comprehensive joint internal view.

A knee joint flexion and extension body position training device comprises a bottom plate, a thigh supporting plate, a shank supporting plate and a pedal plate which are hinged in sequence, the bottom plate is horizontally arranged on the lowest portion, a plurality of clamping grooves are formed in the bottom plate in the length direction of the bottom plate, the pedal plate is in sliding connection with the bottom plate, and the pedal plate is connected with the clamping grooves in a clamped mode through clamping units; the clamping unit comprises a clamping positioning rod, the clamping positioning rod penetrates through the pedal in the vertical direction to be connected with the clamping groove in an inserted mode, the clamping positioning rod is elastically connected with the pedal through an elastic connecting piece, and the position of the clamping positioning rod in the vertical direction is adjustable. According to the knee joint rehabilitation training device, the pedal is positioned on the clamping groove through the clamping unit, so that the angle of the thigh supporting plate and the angle of the shank supporting plate are fixed, the leg of a patient is placed on the thigh supporting plate and the shank supporting plate, the effect of knee joint rehabilitation training of the patient is achieved, and the knee joint rehabilitation training effect is achieved by adjusting the position of the clamping unit in the clamping groove. Therefore, the position of the pedal on the bottom plate can be adjusted to adjust the angles of the thigh supporting plate and the shank supporting plate.

This invention discloses an intelligent wearable device for physical training and a method for dynamic load monitoring, belonging to the field of physical training devices. It includes two leg rings and a physical fitness detector; sensors connected at both ends to opposite sides of the two leg rings, and electrically connected to the physical fitness detector; and two retractable shells. The intelligent wearable device and method for dynamic load monitoring of this invention utilizes separate upper and lower leg rings to adapt to different leg sizes, combined with adjustable elastic bands and a retractable structure, ensuring a secure and comfortable fit. The leg rings feature detachable sweatbands for breathability, sweat absorption, comfort, and hygiene. The sensors accurately collect knee flexion and extension angles and rates, transmitting them to the physical fitness detector for real-time determination of low, medium, and high loads, providing warnings for exceeding limits and preventing sports injuries. The device allows for quick assembly and disassembly through its modular components, facilitating storage and maintenance. Overall, it boasts advantages such as strong adaptability, accurate monitoring, convenient adjustment, and safety protection, meeting the needs of dynamic load monitoring.

A method of evaluating a human knee joint including a femur bone, a tibia bone, and ligaments. The method includes: inserting into the joint a tensioner-balancer that includes at least one force sensor; providing an electronic receiving device; moving the knee joint through at least a portion of its range of motion; using the electronic receiving device to collect data from the at least one force sensor; processing the collected force data to produce a digital geometric model of the knee joint, wherein the data includes: a medial spline representing a locus of points of contact of a medial condyle of the femur F with the tensioner-balancer, over a range of knee flexion angles; and a lateral spline representing the locus of points of contact of the femur F with the tensioner-balancer, over a range of knee flexion angles; and storing the digital geometric model for further use.

This invention specifically relates to a knee brace and a knee joint detection system. The knee brace includes a first binding assembly, a second binding assembly, an angle limiter, and a detection element. The first binding assembly is used to bind and fix to the thigh of a human body and has a first fixing plate. The second binding assembly is used to bind and fix to the lower leg of a human body and has a second fixing plate, which is hinged to the first fixing plate. The angle limiter is fixed to one of the first and second fixing plates, and the other of the first and second fixing plates is hinged to the angle limiter and rotates within a limited range. The detection element is disposed at the hinge between the second and first fixing plates to detect the angle formed by the second and first fixing plates. The knee brace of this invention can detect the bending angle of the human knee joint in real time, thereby obtaining the patient's daily activity level and knee flexion degree.

The utility model discloses a kind of for supine position maintains knee bending state auxiliary brace, belong to auxiliary brace field. Including first mat layer, second mat layer, binding part, connecting piece and support piece etc. First protective pad is provided in the first mat layer;Second protective pad is provided in the second mat layer, the number of the second mat layer is two, and is respectively fixedly connected at the both ends of the first mat layer;Binding part is fixedly connected at the both sides of the second mat layer;When patient carries out knee bending supine position or knee bending lateral decubitus diagnosis or examination item, and need to keep in knee bending state as far as possible stable, after patient posture adjustment, the knee bending state of patient is limited by the auxiliary brace, so that patient keeps as far as possible stable in examination item, satisfy the demand of project examination, and personnel for auxiliary maintenance patient body position can be liberated, carry out other auxiliary work.