111 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.

A knee protection system has a lower guard that is strapped to the lower leg below the knee joint. An upper guard is attached to the lower guard by hinges so that when the knee bends the lower guard goes with it and the upper guard pivots to remain over the kneecap or thereabout.

The invention discloses a knee joint rehabilitation training device, and relates to the technical field of rehabilitation equipment. The problems that in the prior art, diversified rehabilitation requirements cannot be met according to rehabilitation stages of different patients, pedal training strength is fixed and cannot adapt to individual differences, and the patients are prone to insufficient training are solved. The device specifically comprises a base, and two symmetrical openings are reserved in the top face of the base; the top face of the base is connected with a leg training assembly through a bidirectional driving structure, and the leg training assembly comprises a thigh plate hinged to the edge of the top of the opening, two sliding grooves symmetrically formed in the outer wall of the top of the base and moving blocks slidably connected to the inner walls of the sliding grooves. The joint flexibility can be improved through repeated flexion and extension actions, hip-knee-ankle joint load distribution can be synchronously adjusted, excessive load bearing of a single joint is avoided, and the structure can meet diversified rehabilitation requirements, adapt to individual differences and assist a patient to recover a normal knee flexion angle early.

The invention relates to the technical field of medical equipment, in particular to an unpowered knee joint exoskeleton robot structural design which comprises a thigh mechanism (I), an energy-saving clutch mechanism (II) and a shank mechanism (III) and is characterized in that the thigh mechanism, the energy-saving clutch mechanism and the shank mechanism are matched with the same connecting shaft; a thigh rod of the thigh mechanism can rotate on a connecting shaft, and a gear tooth part of the shank mechanism is matched with a duplicate gear of the energy-saving clutch mechanism. In the running process, elastic rubber is used for storing energy in the knee joint bending stage and releasing the stored energy in the knee joint stretching stage, so that auxiliary torque is provided for the knee joint, storage and release of the energy are accurately controlled through a micro servo motor, and the function of a clutch mechanism is achieved. In addition, the clutch mechanism adopts a two-stage duplicate gear, extra force of a user during running is reduced, and meanwhile, a micro servo motor can limit rotation of a second duplicate gear through a servo pin with extremely small force.

The invention relates to a knee joint flexion and extension angle estimation method based on a flexible sensor. The method comprises the following steps: acquiring a voltage signal of a knee part when a target person moves; the voltage signals are input into a neural network model, the knee flexion and extension angle estimated value of the target person is output, the neural network model is obtained based on training of a training set, the training set comprises knee voltage signals of a testee and the corresponding knee flexion and extension angle, and the knee flexion and extension angle estimated value of the target person is obtained. The neural network model is constructed based on a long short-term memory network introducing an attention mechanism. According to the invention, accurate estimation of knee joint flexion and extension angles of different individuals is realized.

The invention relates to the technical field of sheep monitoring, in particular to a method for monitoring the health state of sheep through gait recognition, which comprises the following steps: acquiring a sheep walking video stream through a camera, reconstructing and generating a three-dimensional skeleton motion sequence based on a skeleton motion track, and marking space-time coordinates of hip joint, knee joint and hoof key points; according to the three-dimensional skeleton motion sequence, the knee joint buckling angular velocity peak value, the same-side front and rear hoof grounding time difference and the trunk lateral swing amplitude in a single-step period are calculated, and a gait space-time coordination parameter set is constructed; and inputting the gait time-space coordination parameter set into a disease decoupling model based on anti-factual reasoning, and outputting an early arthritis risk index and a neurological dyskinesia probability. According to the invention, the arthritis risk index and the neurological dyskinesia probability are calculated, early recognition and risk grading early warning of dyskinesia are realized, and the intelligent level and the response capability of a health monitoring system are remarkably improved.

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.

The invention relates to the technical field of air permeability testing, and discloses a material air permeability testing device and method based on kneecap production and a warm kneecap wherein the material air permeability testing device based on kneecap production comprises a bending mechanism used for supporting, bending and stretching a kneecap, a sample outlet pipe having one end arranged in the bending mechanism and the other end arranged in the sample outlet pipe; the bending mechanism comprises a first simulation part, a connecting piece arranged on the outer wall of the first simulation part, a second simulation part arranged at one end, far away from the first simulation part, of the connecting piece, a third simulation part elastically sleeving the outer wall of the connecting piece, and a through hole formed in the outer wall of the third simulation part. The device can effectively evaluate the influence of the relative displacement between the material layers on the air permeability in the actual use process of the warm-keeping kneecap, especially when the knee bends.

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 relates to the technical field of testing devices, in particular to a sitting body forward bending device which comprises a bottom plate and a pedal vertically arranged at one end of the bottom plate, a limiting assembly is arranged in the middle of the upper end face of the bottom plate and comprises two symmetrically-arranged limiting pieces, and a driving piece is arranged on the bottom plate. The driving part is used for controlling the two limiting parts to move oppositely or oppositely, racks are arranged on the bottom plate, the limiting parts comprise limiting plates, first rotating shafts are rotationally connected to the limiting plates, lower gears in meshing transmission with the racks are coaxially arranged on the first rotating shafts, and second rotating shafts in transmission with the first rotating shafts are arranged on the limiting plates. According to the invention, the two limiting pieces move oppositely to limit the thigh of a user from expanding outwards, the lower end of the rotating rod swings downwards to press the upper end of the thigh of the user, and the knee can be prevented from bending through the limiting assembly, so that the measurement precision is ensured.

The invention discloses a mechanism for exoskeleton leg adjustment, and relates to the technical field of exoskeleton leg adjustment, the mechanism comprises a pair of upper movable rods, the inner walls of the pair of upper movable rods are rotatably connected with lower movable rods, the outer walls of the lower movable rods are sleeved with movable sleeve frames, and telescopic adjustment mechanisms are arranged in the movable sleeve frames; binding adjusting mechanisms are arranged on the outer wall of the upper movable rod and the outer wall of the movable sleeve frame, a connecting block is fixedly connected to the bottom end of the movable sleeve frame, and a bearing shoe sole is arranged at the bottom of the connecting block. Meanwhile, in the flexion and extension movement process of the wearer, when the knees are bent and the thighs and the shanks do adaptive movement, the upper movable rod and the lower movable rod are driven to deflect more flexibly, the resistance brought by the movable sleeve frame is reduced, the flexion and extension movement of the wearer is more comfortable and convenient, and the auxiliary effect of the lower limb exoskeleton is enhanced.

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 invention belongs to the technical field of prostheses, and particularly relates to a magneto-rheological magnetostrictive composite actuator of a bionic prosthetic knee joint, which comprises a hydraulic actuating component, a force sensor is arranged on the hydraulic actuating component, the hydraulic actuating component is connected with a magneto-rheological fluid pump through a guide pipe, the magneto-rheological fluid pump is connected with a controller, and the controller is connected with the magneto-rheological fluid pump. According to the device, the current of the first magnetorheological valve and the current of the second magnetorheological valve are adjusted through the controller, meanwhile, the magnetorheological fluid pump cooperates with the magnetostrictive actuator, a semi-active mode and an active mode can be rapidly switched, the ligament loosening and tightening state is simulated, and the ligament can be rapidly controlled. The mechanical requirements of walking and standing scenes are met, the knee joint is actively driven to bend and stretch, the muscle contraction characteristic is reproduced, switching of a semi-active mode and an active mode can be achieved without an external motor, the structure is compact, and the problems of space occupation and weight of a traditional scheme are solved.

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.

The double-joint continuously variable transmission ratio structure comprises an artificial limb hip joint, a continuously variable transmission power mechanism and an artificial limb knee joint, wherein one end of the continuously variable transmission power mechanism is connected with the artificial limb hip joint, and the other end of the continuously variable transmission power mechanism is connected with the artificial limb knee joint; the continuous variable transmission power mechanism is driven by a power motor to transmit power to the prosthetic hip joint and the prosthetic knee joint at the same time, the prosthetic hip joint is driven to complete hip bending action, the prosthetic knee joint is driven to complete knee bending action, and hip and knee movement coordination is conducted through a speed adjusting motor. Under the action of a single power source, through the structure, the transmission ratio can be changed according to the hip and knee joint movement relation in the gait cycle, the hip and knee cooperation rule in the human body movement process is simulated, and therefore the movement collaboration between artificial leg joints is improved, and the energy conversion efficiency is improved.

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 invention relates to the field of nursing materials, in particular to a turning-over assisting lifting pad with a heel suspension structure. The turning-over assisting lifting pad with the heel suspension structure is composed of the first heightening block and the second heightening block which can be turned over mutually, when the first heightening block and the second heightening block are in a closed state, the first inserting rod is inserted into the second heightening block, and then a patient can be rapidly assisted to complete the turning-over action; when the first heightening block and the second heightening block form a 120-degree opening state, the first insertion rod and the second insertion rod are inserted into the second heightening block, so that the patient can complete heel suspension action under the condition that the thighs are sufficiently supported, and in addition, in the state, the device can assist the patient in reciprocating knee bending training. The technical problems that in the patient nursing work of nursing personnel, a turning-over lifting pad only has the function of assisting a patient in completing the turning-over action, and multifunctional application cannot be achieved are solved.

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 present invention discloses a multi-organ training integrated rehabilitation training device relating to the field of medical device technology, comprising a bed body, a first guardrail and a second guardrail fixedly connected to the sides of the upper surface of the bed body, a slide groove opened inside the bed body, a first training device provided on the outer surface of the bed body, a support block fixedly connected to the end of the second guardrail, a third training device fixedly connected to the sides of the upper surface of the support block, a stabilizing device fixedly connected to the corners of the lower surface of the bed body, a second training device fixedly connected to the sides of the lower surface of the bed body, and the second guardrails symmetrically arranged on both sides of the second training device. Through the first training device, the rehabilitation effect of the patient's knee joint can be improved through knee flexion and extension training. Through the second training device, the patient's ankle joint can be rehabilitated. Through the third training device, the wrist joint can be better rehabilitated, which is helpful for the recovery of the wrist joint.

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.