26 results about "Joint stability" patented technology

The invention provides a knee joint dyskinesia function evaluation method and system. The method comprises the following steps: by collecting lower limb kinematics parameters, plantar pressure distribution data and gait rhythm parameter groups of a subject in a standard gait test, generating a knee joint motion trail map comprising sagittal plane, coronal plane and rotation trail components, dividing a dynamic phase window based on the gait rhythm parameters, calculating a fluctuation feature vector of a sagittal plane track component, performing nonlinear decomposition on a coronal plane and a rotation track component to separate an adduction and abduction motion principal component and a rotation coupling component, constructing a joint stability quantitative index, and performing dynamic space registration on a bilateral knee joint track map to obtain a joint stability quantitative index; and calculating a three-dimensional trajectory similarity weight matrix, and calculating a dynamic symmetry index in combination with the cross-side difference coefficient of the joint stability quantitative index. According to the technical scheme provided by the invention, a scientific basis is provided for personalized rehabilitation treatment.

The utility model relates to a sole structure suitable for flatfoot, which comprises a sole main body with a low front end and a high rear end, the outer sole of the sole main body is sequentially divided into a metatarsophalangeal area, a waist area and a heel area from front to back, the inner side part of the metatarsophalangeal area is warped forwards and upwards, and the heel area is warped backwards and upwards; the inner waist part of the waist area is an arc surface, and the triangular pattern position of the inner waist part of the waist area shrinks inwards, so that the ground contact area of the inner side area of the waist is reduced; an elastic piece is arranged in the sole body and extends to the metatarsophalangeal area from the heel area. The utility model provides optimization and improvement aiming at the defects in the walking movement under the existing condition of standing on flat feet instead of changing the posture state of the feet during standing and walking, assists in improving the walking capability, is reasonable in design, and effectively solves the problems that the stability of ankle joints is reduced, the off-ground pedaling and stretching capability is reduced and the walking quality is poor during the walking of the flat feet. And the internal rotation angles and moments of ankle joints and knee joints are increased.

The invention discloses a sports injury risk real-time assessment and early warning system. The system comprises an intelligent wearable device for collecting multi-dimensional physiological data and a remote analysis server for deep analysis; the server performs real-time risk assessment and graded early warning according to a personalized threshold value by fusing and analyzing the heart load, the body fluid balance state and muscle and joint stability characteristics extracted from kinematics parameters, and issues a specific intervention instruction; according to the invention, real-time perception of multiple risk factors of sports injury is realized through an end-cloud collaborative architecture, professional laboratory-level analysis ability is integrated into daily wearable equipment, the contradiction between single early warning dimension of existing equipment and incapability of real-time convenient application of a professional system is solved, accurate and prospective injury prevention guidance can be provided for a user, and the user experience is improved. And the safety of movement is greatly improved.

A prosthetic hip implant comprises a femoral component, an acetabular component, a liner, and ball bearings. The femoral component includes a stem for attachment to the patient's femur and a femoral head structure for articulation with a bearing surface. The acetabular component features a socket formation designed to receive the femoral head structure. The liner covers the exterior articulation surface of the socket formation, with one side in contact with the socket's exterior surface and the other side forming the bearing surface. Ball bearings are positioned between the femoral component and the bearing surface and are rotatably mounted within spaced parallel concentric grooves define in structure to transmit forces between the structure and the bearing surface.

The application discloses a device for evaluating ankle joint stability and an evaluation method thereof, and relates to the technical field of medical examination apparatuses. The device for evaluating ankle joint stability and the evaluation method thereof comprise: a mounting frame which is welded from a steel structure and is fixed on the edge of a sickbed, a table or a chair through a fixing structure; a driving structure which is installed on the mounting frame and is used for driving a swing arm to swing back and forth around a hinge point; and two sets of measuring structures which are installed at the first metatarsophalangeal joint of the dorsum of the foot and the heel position corresponding to the bottom of the swing arm, respectively, and are used for swinging the lower leg of a patient in a reciprocating manner through an electric driving mode, detecting the swing of the first metatarsophalangeal joint of the dorsum of the foot of the patient, and analyzing actual data, so that whether the ankle joint stability of the patient is abnormal can be accurately identified. The mechanical driving mode is more regular than the self-swinging of the patient, is helpful to more objectively and standardly find abnormalities, has a relatively low requirement on the experience of doctors, and is lower in cost.

The invention belongs to the technical field of rehabilitation instruments, and particularly relates to an adjustable senile sarcopenia rehabilitation training protector which comprises two rehabilitation plates, the lower ends of the two rehabilitation plates are connected with supporting strength adjusting assemblies through angle adjusting assemblies, and the side walls of the two rehabilitation plates and the side walls of the two supporting strength adjusting assemblies are connected with binding covers. The knee joint supporting strength can be automatically adjusted according to the muscle recovery degree of a patient, the progressive whole process of sarcopenia rehabilitation training can be precisely adapted, high-strength supporting is provided for the patient with weak muscle strength and insufficient joint stability in the initial rehabilitation stage, the risk that the knee joint is damaged due to excessive impact in the training process is effectively reduced, and the training efficiency is improved. In the middle rehabilitation stage, the supporting strength is automatically and moderately reduced along with the increase of the muscle strength of the patient, the situation that the joint movement range and the muscle force application space are limited due to excessive protection is avoided, the training effectiveness is guaranteed, and the rehabilitation training efficiency and safety of the senile sarcopenia patient are remarkably improved.

The invention discloses a method and a system for judging the stability of an ankle joint. The system comprises an image acquisition module, a network construction module, a skeleton edge point positioning module and a joint stability judgment module, the image acquisition module performs frame extraction and denoising on the ankle ultrasonic video, and marks tibia and fibula edge points; the network construction module generates a high-precision target positioning network; the skeleton edge point positioning module is used for positioning skeleton edge points in real time through the trained network; the joint stability judgment module is used for sequentially calculating the bone gaps when the ankle joints of the patient face the outer side and the neutral position and calculating the final ratio, and when the extorsion position distance is obviously larger than the neutral position, namely, the stretch ratio is larger than 1, it is considered that the joints are unstable. According to the invention, joint problems can be quickly responded during operation, and doctors can be assisted in diagnosis.

A knee implant provides enhanced joint stability and controlled movement. The implant comprises a femoral component, a tibial component, and a braking mechanism operative therebetween. The braking mechanism includes a barrel, a shaft, and clutch plates alternately keying the barrel and shaft in a non-rotatable manner. A plunger, displaced under compression force between the components, compresses the clutch plates to create frictional engagement, restricting or locking relative movement under weight-bearing conditions. This allows stability during standing and controlled mobility when compression is reduced. Optionally, a magnetic biasing mechanism applies variable torque between the components, adapting joint behaviour to different loading conditions. The combined braking and biasing mechanisms provide reliable support and improved control for patients requiring joint stability during functional activities.

A wearable system (100) and a method of operation of the said system for assessing stability of a skeletal joint is disclosed herein. The wearable system (100) comprises at least one multi-axis miniature inertial measurement unit (10) in a singular or pair format; a controller unit (20) communicatively coupled with a multi-axis miniature inertial measurement unit (10) in a singular or pair format; a memory module (30) for storing the processed data from the controller unit (20); a rechargeable battery pack (50) provided with a power regulating module (60) and an internal protection circuit.

A pair of knee compression sleeves with attachable resistance bands is provided. In particular, the present disclosure provides an improved exercise system for resistance training and physical therapy involving stretchable knee sleeves configured with fastening mechanisms positioned above and below the knee. The sleeves feature strategically placed hook and loop fasteners on the outer sides of each sleeve, allowing users to securely attach circular resistance bands at both the upper and lower leg regions. This configuration enables safe and effective resistance across a wide range of leg movements without restricting mobility or posing tripping hazards. The system enhances exercise performance, supports joint stability, and prevents displacement of resistance bands during use. The sleeves are designed to provide customizable resistance, joint compression, and warmth, making them suitable for use in walking, running, sprinting, football, fitness training, and rehabilitation exercises.

The utility model provides a joint bone nail, and relates to the technical field of medical equipment. The joint bone nail comprises a nail rod, threads are arranged on the outer surface of the nail rod, and the thread pitch of the threads is gradually increased or gradually decreased along the central axis of the nail rod; wherein the nail rod is provided with a near end and a far end, the near end is far away from the first bone tissue, the far end is close to the first bone tissue, and the nail rod is provided with a first end face obliquely intersecting with the central axis of the nail rod and close to the near end. According to the joint bone nail provided by the invention, the joint stability can be improved, and the possibility of generating irritation reaction can be reduced.

To provide a supporter that is easy to wear, can be worn daily, assists torque at a joint, and achieves both stability of the joint and ease of bending and stretching. [Solution] The artificial muscle type joint supporter is made of an elastic material and comprises a main body (16), an artificial muscle (10) having an air chamber (11) inside the main body, a supporter with a storage space for storing the artificial muscle and worn by the wearer so that the artificial muscle stored in the storage space covers the back of the joint and is fixed to the back of the joint, an air supply balloon that communicates with the air chamber inside the artificial muscle via a tube and can be manually operated to pressurize the air chamber by sending pressurized air into the air chamber inside the artificial muscle, an exhaust adjustment valve attached to the tube and capable of discharging air from the air chamber, and an adjustment body that adjusts the pressure in the air chamber by adjusting the amount of air discharged from the exhaust adjustment valve, and which causes the artificial muscle to expand and act on the back of the joint, thereby adjusting the wearer's walking assist force and the extension and flexion angles of the joint.

An exercise machine that integrates pull-down and transverse twist exercises, enhancing overall biomechanics and functional movement by engaging multiple muscle groups and improving joint stability. The exercise machine comprises a base platform with a seat and thigh pads adapted to secure the user during exercises. Handles, positioned overhead, are coupled by a connecting bar that allows for pull-down exercises and transverse twist exercises, engaging upper body muscles of the user. The exercise machine includes weight stacks that adjust the resistance for the exercises, with range controllers ensuring safe movement. A pivot point on the connecting bar allows users to perform twist exercises, targeting core muscles. This dual-function setup enhances coordination and strength, engaging multiple muscle groups for a holistic workout, promoting balance, neuromuscular coordination, and reducing the risk of injury through natural, functional movements.

The utility model discloses a kind of neurology patient rehabilitation nursing walking aid, including frame body, four walking wheels rotatably connected to the frame body by pivot are installed on frame body, further including four brake covers fixed on frame body and coaxial with corresponding pivot, pivot is fixedly connected with rotating disc, and rotating disc is located in corresponding brake cover, the outside of rotating disc is hinged with at least two counterweights, and spring is elastically connected between counterweight and rotating disc;Its beneficial effect is that: the counterweight set can contact with friction ring to provide advancing resistance when walking wheel rotation speed is faster, and moderate resistance can effectively exercise the muscle strength of patient, enhance joint stability, improve the motion control ability and balance ability of patient, in addition, the resistance generated when walking wheel rotates can avoid walking aid moving speed too fast, effectively prevent the phenomenon of falling down when patient can not master moving speed.

The invention discloses an oropharynx approach atlantoaxial lateral mass joint stability fusion cage, and belongs to the technical field of medical instruments.The oropharynx approach atlantoaxial lateral mass joint stability fusion cage comprises a fusion cage body implanted in the position of a lateral joint block between the atlas and the axis, and the fusion cage body comprises a lower connecting assembly and an upper connecting assembly; the lower connecting assembly comprises a lower main body, and the upper connecting assembly comprises an upper main body; the center position of the top of the lower main body is fixedly connected with a middle positioning assembly matched with the upper connecting assembly; expanding assemblies are installed on the two sides between the lower connecting assembly and the upper connecting assembly, the outer side of the middle positioning assembly is sleeved with a rotating inner supporting assembly, and an inner supporting unfolding assembly is installed between the rotating inner supporting assembly and the threaded base. According to the atlantoaxial fusion cage, the expandable expansion assembly is designed and can be rapidly expanded in the working process, so that the contact area of a lateral mass joint between the fusion cage and the atlantoaxial is increased, and meanwhile, a more stable supporting structure can be formed.

This invention provides an ankle exoskeleton that assists and enhances joint stability. A wearable component is worn on the wearer's lower leg, and a wearable support is worn on the sole of the wearer's foot. A sliding mechanism and a telescopic component provide assistance and a wrapping force to the ankle joint, with the wrapping force acting as a stabilizing force. The exoskeleton includes: a wearable component, a wearable support, a sliding mechanism, a telescopic component, and a transmission cable. The sliding mechanism is connected to the rear of the wearable support. The transmission cable passes through the telescopic component, around the sliding mechanism, and then exits from the telescopic component. When the wearable component and wearable support are worn around the wearer's ankle joint, the other end of the transmission cable receives a driving force, which is transmitted to the bottom of the ankle joint, providing assistance. This also causes the second and fourth telescopic ends to move away from each other, causing the wearable component to contract and provide a wrapping force to the ankle joint. This invention can provide stable push-off assistance to the ankle joint and increase ankle joint stability during push-off.

An exercise machine that integrates leg press and hip abduction exercises, enhancing overall biomechanics and functional movement by engaging multiple muscle groups and improving joint stability. The exercise machine comprises a base platform with a bench that supports the user in a side-reclining position, allowing the user to face a lateral direction during exercises. The user can perform dynamic exercises targeting the core and lower body muscles, including leg press and hip abduction exercises, by moving a footrest in both horizontal and vertical directions. The machine includes adjustable weight stacks for a personalized resistance-based workout. To enhance safety, the machine features range controllers that limit the footrest movement in both directions, ensuring controlled motion and minimizing the risk of injury. The machine is also configured to accommodate users of varying body sizes and fitness levels for effective workouts.

The invention discloses a negative Poisson's ratio metamaterial intelligent kneecap integrated with gait monitoring, and belongs to the technical field of sports protection and rehabilitation medical instruments. The knee pad comprises two magic tapes, two monitoring circuits, a negative Poisson's ratio metamaterial inner-layer fabric, an intelligent protector outer wrapping surface and a sensor switch, the kneecap adopts a rectangular perforated negative Poisson's ratio metamaterial structure, the kneecap transversely expands to disperse pressure when joints are bent through the negative Poisson's ratio effect, light weight and high elasticity are achieved in combination with a nylon base material, and the wearing comfort and the joint stability are remarkably improved. The kneecap is integrated with double MPU6050 sensors which are respectively arranged at the middle sections of the thigh and the shank and are used for acquiring inclination angle data of the lower limb around the X axis in real time; based on an angular velocity-linear velocity conversion algorithm, the gait velocity is calculated in combination with a leg geometric model. The knee pad supports Bluetooth transmission of real-time gait information to terminal equipment, is suitable for posture optimization in exercise training and progress evaluation in rehabilitation treatment, and solves the problems that a traditional knee pad is poor in comfort and single in function.

The knee joint stability training device comprises a base, a support, an electric cylinder, a belt, a first pressure sensor, a control unit and a display unit. The base is arranged on the ground; the bracket is arranged at the front part of the base; the electric cylinder is mounted at the upper part of the bracket; the output end of the electric cylinder extends forwards; the two ends of the belt are combined to the output ends of the electric cylinders, a first pressure sensor is installed in the middle of the belt, and the first pressure sensor is located on the bent portion of the U shape and used for supporting the rear side of the knee joint of the subject to be trained; the electric cylinder comprises an electric cylinder driving unit, and the electric cylinder driving unit is controlled by the control unit to drive the electric cylinder to work; the first pressure sensor feeds back a pressure value measured by the first pressure sensor as a first pressure value to the control unit, and the control unit outputs a control instruction to the electric cylinder driving unit according to the first pressure value so as to adjust the output force of the electric cylinder; the display unit is connected with the control unit, and the first pressure value is displayed on the display unit.

The application discloses an ankle lateral collateral ligament injury evaluation method and relates to the technical field of ligament injury detection. The ankle lateral collateral ligament injury evaluation method specifically comprises the following steps: S1, experiment preparation; S2, ankle joint stability evaluation; S3, ankle joint ligament laxity index evaluation; S4, conclusion summary; through the combination of a leg shaking device and an inertial sensor, the precise monitoring of ankle joint dynamic movement is realized, and the accuracy and real-time performance of data acquisition are improved. Secondly, the deep learning algorithm is used for data processing and analysis, key features can be automatically extracted and data dimensions can be optimized, and the accuracy and efficiency of evaluation are effectively improved. In addition, the method not only evaluates the stability of the ankle joint, but also introduces the ligament laxity index evaluation, and more comprehensively reflects the functional state of the ankle joint. Finally, through the introduction of time-frequency analysis, wavelet transform technology and ROC curve and AUC value evaluation, the reliability and scientificity of diagnosis are further enhanced.

The invention discloses a posterior cruciate ligament protection brace, and belongs to the technical field of medical rehabilitation assistive devices. The brace comprises a shank fixing mechanism, a thigh fixing mechanism, an angle-adjustable hinge, a tibial plateau flexible supporting mechanism and a waist fixing mechanism. Wherein the waist fixing mechanism is worn on the waist of a human body and is connected with the outer side of the thigh fixing mechanism through an elastic connecting piece to form a suspension structure, and a waist anchor point is used for overcoming gliding caused by the gravity of the brace. The tibial plateau flexible supporting mechanism is arranged on the rear side of the near end of the shank fixing mechanism and comprises a ratchet knob, a steel cable and a TPU lip-shaped supporting pad. The tension of the steel rope is adjusted through the knob, the lip-shaped supporting pad is driven to push the near end of the gastrocnemius muscle forwards, and therefore accurate and quantifiable forward thrust is applied to the tibial plateau. The problem that a traditional brace is prone to slipping is thoroughly solved through the suspension system, the unique anatomical supporting structure is used for effectively resisting tibia retrograde, damaged posterior cruciate ligaments are replaced to maintain joint stability, and the anatomical support has the advantages of being stable to wear, accurate in mechanical conduction and convenient and fast to adjust.

The invention provides an ankle joint stability training device which comprises a base and an ankle joint stability training unit. One ankle joint stability training unit is correspondingly mounted in one sole supporting area; each ankle joint stability training unit comprises a talus pressure component, a tension component and a swing rod; by adjusting the compression degree of the solenoid spring, the pressure on the talus and the tensile force on the ankle joint can be set at expected values, and the pressure and the tensile force are kept stable in the whole training process, so that a subject can conveniently and autonomously train, and the training consistency is kept.

The utility model relates to a massage device for PNF stretching, which is used for executing one of physical therapies of cerebral palsy or cerebral infarction rehabilitation by using leg massage parts capable of operating independently. The massage device comprises a body massage part, a shaft and a plurality of leg massage parts, the leg massage part comprises any one leg massage part for massaging the legs on one side of the user and the rest leg massage part for massaging the legs on the other side of the user; the control unit performs control so as to execute at least one of: an isotonic motion that guides a direction in which a user applies a force to a leg to a direction opposite to an operation direction of the leg massage unit in a state in which the leg massage unit is operated, and an isometric motion that guides a direction in which the user applies the force to the leg to a direction opposite to the operation direction of the leg massage unit; when the leg massage part is not operated, equal-length movement in the direction in which the user applies force to the legs is guided. According to the massage device disclosed by the utility model, the reaction training for promoting or inhibiting a neuromuscular mechanism is matched with each muscle to induce proper isotonic contraction and isometric contraction, so that the muscle strength can be improved, the balanced muscle development can be realized, the joint stability can be improved, and the movable range can be expanded.

The invention discloses an intelligent orthopedic joint rehabilitation monitoring method and system, and the method comprises the steps: obtaining a three-dimensional spatial-temporal feature vector of joint motion according to joint motion data, muscle electric signals and pressure distribution information collected by a multi-modal sensor; based on the three-dimensional spatio-temporal feature vector, key parameters of a joint function state are extracted by using a spatio-temporal diagram convolutional neural network, and a joint stability quantitative index is obtained; according to the joint stability quantitative index and the patient pain feedback data, a rehabilitation stage quantitative index is obtained; generating a safety training instruction set according with the current rehabilitation stage based on the rehabilitation stage quantitative index; and driving the wearable exoskeleton to execute rehabilitation training according to the safety training instruction set, and synchronously monitoring a neuromuscular activation signal through a brain-computer interface to verify the consistency of a training action and neural control. According to the embodiment of the invention, accurate, continuous and self-adaptive monitoring and management of the whole process of joint rehabilitation can be realized.

The invention relates to the technical field of medical equipment, and discloses a static position occupying device for knee joint periprosthetic infection treatment, which comprises a thighbone position occupying component, a tibia position occupying component and a connecting component, a first articular surface is arranged on one side of the femur occupying component away from the femur; a second articular surface is arranged on the side, close to the proximal tibia end, of the tibia occupying assembly, and the second articular surface is movably connected with the first articular surface through a clamping part; the connecting assembly is arranged between the thighbone occupying assembly and the tibia occupying assembly, and the two ends of the connecting assembly are detachably connected with the thighbone occupying assembly and the tibia occupying assembly correspondingly, so that relative fixation and position adjustment between the thighbone occupying assembly and the tibia occupying assembly are achieved; medicine storage cavities are formed in the femur occupying assembly and the tibia occupying assembly. The spacer can be accurately matched with individual anatomy, and joint stability and tissue safety are guaranteed.

The application discloses an oropharyngeal approach atlantoaxial lateral mass joint stability fusion ware, and belongs to the technical field of medical devices. The oropharyngeal approach atlantoaxial lateral mass joint stability fusion ware comprises a fusion ware implanted in the lateral joint block position between the atlas and the pivot, wherein the fusion ware comprises a lower connecting assembly and an upper connecting assembly; the lower connecting assembly comprises a lower main body; the upper connecting assembly comprises an upper main body; a middle positioning assembly matched with the upper connecting assembly is fixedly connected to the center position of the top of the lower main body; expansion assemblies are installed on both sides between the lower connecting assembly and the upper connecting assembly; a rotating inner support assembly is sleeved outside the middle positioning assembly; and an inner support unfolding assembly is installed between the rotating inner support assembly and a threaded seat. The expandable expansion assemblies can be quickly unfolded during the working process, so that the contact area of the fusion ware and the lateral mass joint between the atlas and the pivot is increased, and a more stable support structure can be formed.