153 results about "Arthroplasty knee" patented technology

Knee replacement prosthesis are provided, comprising a plurality of sensors and at least one of a femoral component, a patellar prosthesis and a tibial component.

The invention provides an osteotomy path adjusting system in robot-assisted knee arthroplasty, and belongs to the technical field of knee joint detection. The system comprises a multi-modal data acquisition unit which comprises a knee joint pressure measuring gasket, an optical acquisition module and a kinematics data acquisition module, the knee joint pressure measuring gasket is used for acquiring knee joint pressure signals in an operation, and the optical acquisition module is used for acquiring relative poses of a femur and a tibia; the kinematics data acquisition module is used for acquiring kinematics data of the mechanical arm; the main control calculation unit comprises a data fusion module and a dynamic compensation module, and the data fusion module is used for constructing a synchronous spatio-temporal data set; and the dynamic compensation module is used for outputting a compensation instruction to the mechanical arm to adjust an osteotomy path based on the synchronous spatio-temporal data set, the preoperative predicted pressure prediction matrix and the soft tissue stiffness matrix. The pressure change in the operation can be responded in real time, the operation precision of the knee arthroplasty is improved, and the dependence on the experience of doctors can be reduced.

The invention discloses a knee joint replacement post-operation fixing and pressurizing training belt and system. The knee joint replacement post-operation fixing and pressurizing training belt comprises a waist belt, a knee assembly, a foot assembly, a first elastic belt and a second elastic belt. The two sides and the rear portion of the waistband are provided with hooks to be connected with a first elastic belt and connected with the upper end of the knee assembly through the first elastic belt, and the two sides of the lower end of the knee assembly are provided with hooks to be connected with a second elastic belt and connected with the tiptoe component and the heel component of the foot assembly through the second elastic belt. All the components work coordinately, so that comprehensive exercise of knee joints and peripheral muscular tissues of the knee joints is realized; adjusting assemblies are arranged in the knee assemblies, and the training intensity can be adjusted; in addition, each part of the device is provided with an attitude sensor, real-time monitoring of foot and leg motions is realized, motion data is recorded and simulated and analyzed through a monitoring computer on the waistband, user feedback and training guidance are provided, a patient is helped to adjust a training scheme according to personal conditions, rehabilitation training is scientifically carried out, and the recovery process is accelerated.

The invention relates to a knee joint replacement valgus and valgus balance graphical analysis device, which comprises a gap lattice diagram drawing system, which is configured to obtain force-gap data of soft tissues around a knee joint at different buckling angles and draw an inner side gap-outer side gap lattice diagram; the quantitative index unit is configured to construct quantitative index parameters for measuring the inward and outward turning gap balance according to the inner side gap-outer side gap dot matrix relation under different buckling degrees; and the quantitative analysis system is configured to adjust quantitative index parameters, and formulate an optimization adjustment strategy to carry out inward and outward turning soft tissue balance quantitative analysis according to the inner and outer side gap width difference of the soft tissue around the knee joint at different flexion and extension angles. According to the method, the tension of the soft tissue around the knee joint is quantitatively evaluated according to the force-gap data, the method is used for guiding precise technical adjustment of robot-assisted knee joint replacement, and data and algorithm foundations are laid for analysis methods such as automatic operation plan guidance, prosthesis selection and personalized operations.

The invention provides a data processing method, medium and equipment in knee arthroplasty, and belongs to the technical field of medical electronics. The method comprises the following steps: acquiring pressure distribution data, measured by an array sensor, of an articular compartment in a complete period of joint movement; based on the pressure distribution data, pressure centers under all buckling degrees in the whole period of joint movement are calculated, and corresponding pressure center tracks are formed; calculating shear stress distribution data under the complete period of joint movement based on the pressure center track data; based on the pressure distribution data, calculating a dynamic pressure envelope line under the complete period of the joint movement; and generating an intraoperative correction suggestion for knee arthroplasty based on the pressure center trajectory, the shear stress distribution data and the dynamic pressure envelope. The correction suggestions given by the method are more accurate for abnormal conditions occurring in knee replacement.

The embodiment of the invention is suitable for the technical field of medical treatment, and provides a preoperative planning method and medical device.The method comprises the steps that according to a first three-dimensional model corresponding to a target skeleton, the feature axis of the target skeleton and the feature point of the target skeleton are determined; according to a preset space coordinate system and the feature axis of the target skeleton, adjusting the pose of the target skeleton of the first three-dimensional model to obtain a second three-dimensional model; and determining a target osteotomy direction and a target osteotomy position in the second three-dimensional model according to the feature points, the feature axis and the osteotomy planning parameters. By adopting the method, the time required by the knee joint replacement operation can be shortened.

Knee replacement prosthesis are provided, comprising a plurality of sensors and at least one of a femoral component, a patellar prosthesis and a tibial component.

The present invention relates to a system and method for load and gap balancing in knee replacement surgery. The system incorporates sensor devices, such as load cells, pressure, ultrasound or optical, to accurately measure gaps and ligament tensions within the knee joint during surgery. Additionally, a tensioner device, which can be a manual spreader, a spring-loaded mechanism, or a motorized linear actuator, is employed to tension the medial and lateral collateral ligaments, as well as patella tendon, based on the measured data. These real-time measurements are transmitted to a computer or robotic surgery system, which provides real-time visualization of the data and assists the surgeon in determining the appropriate gap and ligament tension for each individual patient. Using soft tissue analysis, the real-time sensor data can be displayed on a computer recommending appropriate gap and ligament tension, implant size and shape, and individualized knee alignment based on optimal outcome.

Described here are self-contained surgical navigation systems which include a head-worn display device to be worn by a user during surgery. The system includes a display generator for generating a visual display on the display device, and a sensor suite having at least one tracking camera. The system further includes a support module including: a user-replaceable, modular battery that is removably insertable into a housing of the support module, and a processor unit configured to receive data from the sensor suite and calculate a position and an orientation of at least one marker. The support module is electrically coupled to the head-worn display device to provide power and data to the head-worn display device. The display device and the support module together comprise the entire sensing and computing capability of the system, without requiring external sensors, cameras, computers, or other electrical equipment.

The invention discloses a control method and device of a surgical robot, a storage medium and electronic equipment. The method comprises the following steps: determining a plurality of simulated osteotomy surfaces of a target object according to a preoperative plan of knee joint replacement; under each simulated osteotomy surface, calculating a working space of the surgical robot to obtain a plurality of first working spaces; and determining a target working space of the surgical robot according to the plurality of first working spaces, and controlling the surgical robot to execute actions based on the target working space. By means of the method and device, the problem that in the prior art, due to kinematics constraint, an under-degree-of-freedom surgical robot cannot be adjusted to all necessary operation postures, and the accuracy of surgical robot control is low is solved.

Knee arthroplasty implants, instruments, systems, and methods of implanting the same. The knee arthroplasty implants may include a femoral implant and a tibial tray implant, each with trabecular surfaces configured to contact bone to provide a scaffold for bone healing and interdigitation. The implants may also include fixation pegs with bulleted profiles to increase the surface area for bone ingrowth. An inserter instrument may include a sliding rack, which is incrementally extended with a rotatable shaft, thereby allowing for quick lock and release of various tibia trays.

The utility model belongs to the technical field of medical instruments, and particularly relates to a knee joint replacement operation position adjustable device which comprises a base, moving wheels and a fixing rod are arranged on the base, an adjusting rod is arranged at the outer end of the fixing rod in a sleeved mode, a through hole is formed in the adjusting rod, and a second fastening bolt penetrates through the through hole to be connected with the fixing rod in a screwed mode. The top end of the adjusting rod is connected with a clamping groove formed in the top seat in a clamped mode, the top seat is further provided with a screw hole and a moving groove, a third fastening bolt is connected with the screw hole in a screwed mode, a screw rod is horizontally arranged in the moving groove, one end of the screw rod penetrates through the moving seat to be connected with a rotating handle, and threads of the inner wall of the moving seat are matched with threads of the outer wall of the screw rod. A supporting seat is rotationally connected to the moving seat, an adjusting plate is inserted into the top seat and connected with a baffle, the affected limb of a patient can be fixed through the device, the labor intensity of medical workers can be reduced, and the stability of body position keeping can be guaranteed.

1. Name of the product of this design: Femoral osteotomy guide for knee replacement. 2. Purpose of the product of this design: For femoral osteotomy. 3. Key design point of the product of this design: Shape. 4. Picture or photo that best illustrates the key design point: Main view.

The present application provides a surgical upper computer for knee replacement surgery and a knee replacement surgery system, relating to the field of surgical equipment. A surgical upper computer includes a processor; and a memory storing a plurality of computer programs, which, when executed by the processor respectively, cause the processor to execute multiple operation modes of the surgical upper computer. The multiple operation modes include: presenting information to be input to a user, where the information to be input includes a dynamic change range of a joint angle, and a relationship between the joint angle and a thrust applied between the femur and the tibia or a relationship between a formed gap; applying a thrust during a dynamic adjustment of the joint angle, and collecting corresponding relationship data between the thrust and the gap; and visually presenting the corresponding relationship data. According to an embodiment of the present application, the forces and gaps of soft tissues in knee replacement surgery can be collected and presented in a reasonable manner.

A total knee replacement implant having an anatomically representative femoral component that is based on an average knee geometry model determined from scans of multiple people. The implant can be customized for a given patient by scaling the average knee geometry according to one or more measurements (e.g. AP and ML) of the patient's knee. The implant can be formed by 3D printing or any suitable fabrication technique.

The present application relates to the technical field of medical image processing, and provides a knee femur and tibia segmentation method based on region growing, comprising the following steps: S1, acquiring knee medical images; S2, selecting a growth seed point; S3, coarsely segmenting the knee medical images to obtain knee stem data; S4, finely segmenting the knee medical images to obtain knee connection data; S5, fusing the knee stem data and the knee connection data to obtain knee femur and tibia image data with complete contours; S6, coarsely filling the knee femur and tibia image data to obtain knee femur and tibia image data after coarse filling; and S7, iteratively filling holes in the knee femur and tibia image data by using a three-dimensional sliding window, so as to obtain image data that is consistent with the surrounding data in shape, position and completeness and smoothness. The present application solves the problems of slow segmentation speed, unstable segmentation effect, incomplete segmentation and adhesion in preoperative planning of knee replacement surgery.

The invention provides a lower limb fixing device for knee replacement surgery in the orthopedics department and belongs to the technical field of medical equipment. Comprising a bottom box, a fixing assembly used for fixing the legs of a patient is installed at the top of the bottom box, the fixing assembly comprises two first thigh plates, two first shank plates and two foot boxes which are symmetrically arranged at the top of the bottom box, and a second thigh plate is slidably clamped in one end of each first thigh plate. Through cooperation of the fixing assembly, the adjusting assembly and the positioning assembly, it can be ensured that the leg position of a patient is accurate and stable in an operation, the stretching assembly can promote recovery of knee joints after the operation, the postoperative rehabilitation effect of the patient is overall improved, and meanwhile the stretching assembly is additionally arranged, so that the postoperative rehabilitation effect of the patient is improved. The postoperative knee joint recovery process of a patient is more scientific and efficient, the overall recovery effect is optimized by reducing unhealthy symptoms such as muscle stiffness of the whole body, and the defect that traditional postoperative recovery only depends on drugs and passive methods is overcome.

A tibial tray for a resurfaced proximal portion of a tibia for a knee replacement for a patient includes, for example, a body having a superior portion, and an inferior tibia-engaging portion having a peripheral inferiorly-extending portion contactable with an underlying cortical bone and / or spaced apart from the underlying inner surface of the cortical of the tibia of the patient. In some embodiments in the total knee replacement, a greater portion of a shearing force acting transversely on the tibial tray and the resected portion of the proximal portion of the tibia of the patient is resisted by the at least one inferiorly-extending wall and the periphery of the resected proximal portion of the tibia compared to a portion of the shearing force being resisted along the center inferior surface of the tibial tray and the resected cancellous bone surface. Methods, robotic systems, and cutting guides are also disclosed.

The present invention discloses a reflective array fixation device for robotic knee replacement surgery, belonging to the field of medical technology. The device comprises a claw mechanism and a fixation mechanism; the fixation mechanism comprises a fixation box, a fixation block, and a locking handle; the fixation box is provided with at least two Kirschner wire holes extending through its front and rear walls; the top of the fixation box is provided with a threaded hole; the fixation block is located inside the fixation box and can move up and down; the middle portion of the locking handle is a threaded section, the end of which is provided with a circular constraint block; the top of the fixation block is provided with a shrinking groove; the threaded section of the locking handle is matingly connected to the threaded hole of the fixation box, and the circular constraint block at the end of the locking handle is located in the shrinking groove and can rotate freely within the shrinking groove. The present invention achieves excellent fixation of the reflective array through simple coordination.

A method, non-transitory computer-readable medium, and surgical computing device for improving a robotic surgical system are shown. Using this technique, one or more machine learning models are trained based on historical state data obtained for a computer-assisted surgical system (CASS) during each of a plurality of time periods during a plurality of historical knee replacement surgical procedures. One or more of the machine learning models are applied to initial state data of a current knee replacement surgical procedure to generate robotic commands required to achieve one or more future states of the CASS. The initial state data includes a surgical plan. One or more surgical tools of the CASS are then manipulated based on the robotic commands to achieve one or more future states of the CASS and thereby perform at least a portion of the surgical plan.

The invention provides a cross-scale force line safety boundary determination method and system for knee joint replacement and a readable storage medium, and the method comprises the steps: S1, obtaining the physical property and service data of a knee joint prosthesis, and carrying out the treatment through collecting the individual feature data and multi-modal clinical data of a patient, so as to form an available data set; s2, performing simulation analysis on different alignment angles of the knee joint prosthesis according to the available data set, and simulating mechanical response under various alignment error combinations to determine stress and pressure distribution; s3, acquiring multi-dimensional experimental data of the knee joint prosthesis, and evaluating performance through material fatigue and wear experiments; s4, according to simulation analysis and experimental data, knee joint prosthesis service evaluation based on cross-scale correlation is carried out, the safety force line range is determined, and the service performance is predicted. According to the method, the problems of inaccurate service performance prediction and inconformity with postoperative experience of a patient caused by scale splitting, material dispersity and disjunction of a simulation model and clinical reality are solved.

The invention provides a flexible pressure-adjustable knee joint distraction device, and belongs to the technical field of knee joint adjuvant therapy. Comprising a handle, an inner cavity is formed in the handle, a flexible distraction mechanism is fixedly installed at one end of the handle, and a rigid distraction mechanism is fixedly installed on the other side of the handle. The flexible distraction mechanism gently and stably distraction the knee joint by means of the flexible water supply assembly and depending on water pressure, can fit the shape of the bone and can accurately regulate and control pressure, the rigid distraction mechanism is started when the flexible mechanism fails, reliable rigid distraction is achieved through an ingenious clamping structure and a transmission assembly, the pressure is accurately fed back through matching with a tension sensor, and the flexible distraction mechanism is suitable for the flexible mechanism. The two parts supplement each other, so that the device can flexibly meet the requirements of different patients, operation stages and complex distraction, a comprehensive and reliable distraction scheme is provided for operations such as knee joint replacement, and the safety and success rate of the operations are effectively improved.

1. Name of the designed product: knee prosthesis component. 2. Use of the designed product: for knee replacement. 3. Design points of the designed product: in shape. 4. Picture or photo best indicating the design points: perspective view 1.

The present invention discloses a method for verifying osteotomy accuracy during knee replacement surgery, comprising: S1, obtaining a preoperative point cloud of a patient and marking anatomical bony landmarks therein; S2, determining whether it is a non-imaging surgical plan; if so, obtaining a planned osteotomy plane and a planned osteotomy amount, and simultaneously registering the patient's preoperative point cloud with the intraoperative point cloud; otherwise, obtaining a planned osteotomy plane and a planned osteotomy amount; S3, obtaining a postoperative point cloud of the patient after osteotomy, identifying the actual osteotomy plane therein, and then calculating the actual osteotomy amount, while removing points on the identified actual osteotomy plane; S4, registering the patient's preoperative point cloud with the postoperative point cloud after removing the points on the actual osteotomy plane; S5, based on the registration in S4, transforming the actual osteotomy plane obtained in S3 and the planned osteotomy plane obtained in S2 to the same reference, and calculating the osteotomy plane error and the osteotomy amount error accordingly. The present invention can verify osteotomy accuracy under optical navigation.

The invention provides a bone joint replacement surgery auxiliary device which comprises a bottom plate, a main lifting part is arranged on the upper side of the bottom plate and comprises two symmetrically-arranged adjusting plates, the lower portions of the side faces of the two adjusting plates are movably arranged on the bottom plate, and the upper portions of the side faces of the two adjusting plates are rotationally connected through a mounting shaft; a mounting opening is formed in the top end of the adjusting plate, a telescopic rod is slidably arranged in the mounting opening, and a positioning piece used for adjusting and positioning the telescopic rod is arranged on the side face of the adjusting plate. According to the auxiliary device for the bone joint replacement surgery, when a patient is subjected to knee joint replacement, supporting and positioning are conducted through the auxiliary device, it is guaranteed that legs of the patient are stably placed in the surgery process, meanwhile, the auxiliary device can be used for adjusting and positioning the height of the legs of the patient, and medical staff can conveniently conduct surgical treatment on the patient; and the angle of the knee joint can be adjusted and positioned according to operation requirements, so that the auxiliary device is convenient to use.

This application relates to a dual-arm knee replacement robot with an extended axis, comprising: a robot body, a drive unit, an extended movement mechanism, an auxiliary fixation arm, and a limb fixation unit. The drive unit is mounted on the robot body. The extended movement mechanism is connected to the drive unit and is located on one side of the robot body. The front end of the auxiliary fixation arm is mounted on the extended movement mechanism, and the end end is fitted with the limb fixation unit. The drive unit drives the auxiliary fixation arm to reciprocate or fix itself along a preset trajectory in the circumference of the robot body. By providing an extended movement mechanism on one side of the robot body, it can reciprocate within a preset trajectory in the circumference of the robot body, enabling automatic configuration of the auxiliary fixation arm on the left and right sides of the robot body. This allows the extended movement mechanism to be adjusted to the left position, increasing the application flexibility of the dual-arm knee replacement robot with an extended axis and improving its ease of use.

The present invention provides a double sliding field tibial platform base and gasket system, including a platform base and a gasket, wherein the platform base includes an upper platform and a lower keel, wherein two high dividing ridges are arranged in the middle of the platform from front to back, and the platform is divided into three parts: a central groove, an inner sliding field, and an outer sliding field, and the gasket is divided into a central gasket, an inner gasket, and an outer gasket, which are matched with the three parts of the platform, and the above structure is matched with an artificial femoral prosthesis to form an artificial joint interface in which both the inner chamber and the outer chamber are slidable and rotatable. The system can form a joint interface that can move flexibly in the inner and outer joint compartments after knee replacement, while retaining the front-back stability, dispersing and reducing the wear rate of the inner and outer compartments of the knee joint, improving the movement characteristics of the knee joint, improving the surgical effect, and extending the service life of the prosthesis.

This application relates to the field of medical device technology, specifically to an extramedullary positioning distal femoral osteotomy device for knee replacement, comprising an osteotomy plate, an axial indicator, a rotating component, and a reference plate. The osteotomy plate has a reference end face and an abutment end face, with a cutting suture and pin holes provided on the reference end face. The axial indicator is rotatably mounted on the reference end face; the rotating component is rotatably mounted on the reference end face; the reference plate is slidably mounted on the rotating component, and the reference plate can slide on the rotating component in a direction away from or close to the rotation axis of the rotating component, with the reference plate perpendicular to the reference end face. In this application, the axial indicator determines the direction of the patient's femoral axis, ensuring that the movement of the osteotomy plate is consistent with the direction of the femoral axis, thereby improving the accuracy of the cutting position during surgery. The rotating component and the reference plate allow the surgeon to adjust according to the preoperatively determined angle of the prosthesis articular surface, enabling precise matching of the cutting suture angle with the prosthesis articular surface, further improving the precision of the surgery.

The application discloses a hip-knee joint replacement postoperative rehabilitation method and system based on mobile medical treatment, relates to the technical field of medical rehabilitation, and discloses the hip-knee joint replacement postoperative rehabilitation method and system based on mobile medical treatment. The wearable sensor is used for monitoring patient motion data in real time and recognizing compensatory behavior. A training plan is dynamically adjusted in combination with multidimensional indexes, the problems of missing compensation recognition, feedback lag and plan rigidity in the traditional rehabilitation scheme are effectively solved, the rehabilitation effect can be improved, and the risk of adjacent joint injury can be reduced.

The invention discloses a knee joint replacement surgery navigation system. Relates to the technical field of medical treatment, and comprises a pre-operation processing unit used for determining a gradient pore model corresponding to a target object according to a knee joint medical image of the target object; the intra-operation processing unit is used for determining target pose information of an operation tool based on the multi-modal acquisition data in the implantation process of the personalized knee joint prosthesis, and performing reconstruction processing on the knee joint three-dimensional model of the target object based on the target pose information to obtain a processed knee joint three-dimensional model; and the postoperative processing unit is used for monitoring the knee joint state of the target object based on the implantable sensor after the personalized knee joint prosthesis is implanted, and executing a corresponding target early warning strategy according to abnormal information of the knee joint state under the condition that the knee joint state is detected to be abnormal. According to the invention, the problem of low positioning accuracy of a knee joint replacement surgery navigation system in the prior art is solved.