78 results about "Knee flexion" patented technology

The present invention is directed to a reusable residual limb protector that can be used with a knee immobilizer to protect a recent amputee patient from further injury and infection of the amputation site while preventing knee flexion contractures. In alternative embodiments, the residual limb protector is configured for use with one patient. A method of use of the residual limb protector is also disclosed herein.

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.

The invention discloses a patient leg rehabilitation device for surgical nursing, and relates to the technical field of medical rehabilitation, the patient leg rehabilitation device comprises three first half cylinders and two second half cylinders, the top of one of the first half cylinders and the second half cylinders is provided with four fixing belts, and an adjusting buckle is arranged between every two fixing belts in a sleeving manner; and two L-shaped frames are arranged at the bottom of one of the first half cylinders. Through the arrangement of an adjusting rack, two adjusting gears, two U-shaped limiting rods and an arc-shaped abutting plate, the position of a massage mechanism is adjusted according to the knee bending degree of a patient, the initial, middle and later rehabilitation periods of the patient are judged according to the knee bending degree of the patient, and through the arrangement of a one-way rack, a wedge-shaped block and an abutting spring, the rehabilitation effect of the patient is improved. The maximum massage strength which can be adapted to a patient is recorded and limited, the massage strength is adjusted in a self-adaptive mode according to the rehabilitation stage of the patient, the muscle fatigue recovery time is shortened, meanwhile, blood circulation is promoted, and the fascia adhesion or fibrosis risk is 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.

The present application provides a ligament isometric analysis method, device, and system, including: determining the center position of the femoral head based on the position set of the femoral positioning device during femoral rotation, and determining the center position of the ankle joint based on the medial and lateral malleolus positions; during knee flexion, converting the acquired femoral ligament insertion point position, intercondylar notch apex position, tibial ligament insertion point position, tibial plateau center position, femoral head center position, and ankle joint center position in the local coordinate system to a global coordinate system; determining the knee flexion angle based on the intercondylar notch apex position, tibial plateau center position, femoral head center position, and ankle joint center position in the global coordinate system; determining the ligament length based on the femoral ligament insertion point position and tibial ligament insertion point position in the global coordinate system to obtain the ligament length difference; and constructing a ligament isometric curve showing the ligament length difference as the knee flexion angle changes. The present application can improve the accuracy of determining the ligament insertion point position.

The present disclosure relates to a seating system (200) configured to enhance user comfort during prolonged seating durations. The seating system (200) includes a seat (205) defining a seating surface for supporting a user in a seated position and having an underside region. Disposed beneath the seat (205) is at least one retractable foot support (210), configured to extend outward from the base of the seat (205) into an operative position. The retractable foot support (210) is adapted to support the heel of the user's foot at a height proximate to the level of the seat (205), thereby enabling the user to adopt a bent-knee posture with the lower leg resting comfortably along the seat surface. This ergonomic configuration aids in reducing thigh pressure, improving blood circulation, and allowing for culturally preferred seating styles, such as Indian-style cross-legged postures.

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 invention discloses a rehabilitation training device which effectively solves the problems that the difficulty is high when a patient autonomously completes knee bending straightening and elbow bending straightening actions, assistance of nursing personnel is needed, and the workload of the nursing personnel is increased. Comprising a bed body, a back plate is placed in a first containing groove, swing boxes are hinged to the front side and the rear side of the right end of the back plate respectively, sliding plates are slidably connected into the swing boxes, thigh plates are fixed to the right ends of the sliding plates, and shank plates are hinged to the right ends of the thigh plates; the front side and the rear side of the movable rod are respectively hinged with arm plates, the front side and the rear side of the bed body are respectively connected with transverse rods in a sliding mode, the left sides of the transverse rods are connected with sliding frames in a sliding mode, the sliding frames are hinged with connecting rods, and the upper ends of the connecting rods are hinged with the arm plates; the device is ingenious in structure and convenient to use, the situation that training is interrupted due to the fact that a patient fears pain or does not feel physical strength is avoided, effectiveness and continuity of rehabilitation training are remarkably improved, and nursing workload is greatly relieved.

The utility model discloses a knee flexion and extension mechanism and a knee training device, and the knee flexion and extension mechanism comprises a fixed seat which is provided with a supporting column; one end of the guide piece is rotationally arranged on one side of the supporting column, and a first pulley is rotationally arranged at the other end of the guide piece; the supporting column is provided with a first limiting column for limiting the downward rotation stroke of the guide piece. The guide wheel is rotationally arranged on the supporting column and located on the outer side of the guide piece, and a second limiting column located below the guide piece is arranged on one side of the guide wheel in a protruding mode; one end of the leg stress frame is fixed to the center of the outer side of the guide wheel, and the other end of the leg stress frame extends outwards; and one end of the resistance rope is wound from bottom to top, passes through the first pulley and then is fixed on the guide wheel so as to apply resistance to the rotation process of the guide wheel, and the other end of the resistance rope extends outwards. The knee stretching and bending training device has the dual functions of knee stretching training and knee bending training at the same time, and the problem that resistance suddenly loses efficacy in the forward and reverse rotation process of knee stretching and knee bending does not exist.

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.

The application relates to a leg position support adjusting device for a bed body, a pair of parallel groove bodies are fixedly arranged on the upper surface of a bottom plate, support shafts are fixedly arranged in the groove bodies; a first auxiliary rotating block is fixedly connected to the support shafts, and a second auxiliary rotating block is movably sleeved on the first auxiliary rotating block; the connecting blocks are provided in pairs and each include a lower swing body and an upper swing body which are hingedly connected; the first auxiliary rotating block is hingedly connected with the lower swing body of the connecting block, and the upper end of the upper swing body is fixedly connected with the bottom surface of a first support plate; the second auxiliary rotating block is hingedly connected with the lower swing body of another connecting block, and the upper end of the other connecting block is fixedly connected with the bottom surface of a second support plate; the first support plate and the second support plate are rotationally connected through a movable rod; the knee bending adjusting device includes a pair of hollow pipes with an inner diameter not smaller than the outer diameter of the support shafts, the hollow pipes are transversely inserted into the groove bodies along the groove bodies and are sleeved on the outer portions of the support shafts, and the end surfaces of the hollow pipes push the second auxiliary rotating block to move along the support shafts.

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 knee joint flexion and extension exercise device on the sickbed comprises two sets of supporting plates which are symmetrically arranged, the middle of the surface of each set of supporting plates is provided with a moving groove, the bottom face of the first supporting plate is provided with a rubber anti-skid pad, and the bottom face of one end of each moving groove is provided with a storage groove; the middle connecting assembly is arranged between the two groups of supporting plates so as to fix the two groups of supporting plates at a proper distance; the pedal is slidably mounted at the top of the moving groove; the spring rod is vertically installed in the storage groove in a sliding mode, and the spring rod is connected with the pedal plate in a clamped mode when rising so that the motion resistance of the pedal plate can be increased; the hand pulling belt is connected with the two groups of pedal plates in a buckling manner so as to assist in pulling the pedal plates. The two groups of supporting plates can be connected into a whole through the middle connecting assembly, so that the overall placement and storage are simpler and more convenient; a patient can lie on the bed on the back, put both feet on the pedal plate and then do knee joint bending and stretching movement, the pedal plate can slide along the moving groove, and meanwhile the purpose of bending and stretching the knees can be achieved by driving the pedal plate to slide through the force of the hand pulling belt.

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 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 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.