116 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 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.

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.

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.

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.

A kit for use in knee replacement surgery includes a trial patella component and a patella implant component. The trial patella component includes a backing plate having a backing surface for positioning against a patient's patella, and at least one sensor which can generate a signal corresponding to the compressive load applied to the trial patella component, and a first bearing plate which can be fitted to the backing plate and which, when fitted to the backing plate, provides a bearing surface for articulation against a bearing surface on the patient's femur. The patella implant component has a backing surface for fixation to a patient's patella instead of the backing surface of the trial patella component, and a bearing surface for articulation against a femoral bearing surface. The thickness of the patella implant component is greater than the thickness of the trial patella component when the first bearing plate is fitted to the backing plate, the difference between the said thicknesses being at least about 1 mm.

The present invention discloses a hip-knee integrated surgical robot and its alignment method, comprising a surgical instrument mounted at the end of a multi-degree-of-freedom robotic arm for controlling the motion path and speed of the surgical instrument; a medical image fusion module for receiving and processing image data from medical imaging equipment to construct a three-dimensional model of the hip joint and knee joint; an image alignment module for aligning the three-dimensional model with the real-time image during surgery; an optical tracking module for setting marking points, which are set on the surgical instrument. The optical tracking module obtains the position and posture of the surgical instrument in three-dimensional space in real time by tracking the marking points. The hip-knee integrated surgical robot system of the present invention is applied to hip and knee replacement or repair surgery to solve the problems of insufficient surgical accuracy, complicated and cumbersome operation, and long time consumption in current technology, and realizes the integration of hip and knee dual joint surgery, thereby significantly improving the accuracy, safety and efficiency of the surgery.

The invention relates to the field of computer technology application, and provides a postoperative lower limb key point detection method and device, electronic equipment and a storage medium, and the method comprises the steps: obtaining a postoperative lower limb image needing to be detected at present and a preoperative lower limb image corresponding to the postoperative lower limb image; the post-operation lower limb image is an image shot after a knee joint replacement operation is carried out on the lower limb, and the pre-operation lower limb image is associated with the corresponding pre-operation lower limb key point information; based on the postoperative lower limb image, key points of a prosthesis area in the postoperative lower limb image are detected, and prosthesis area key point information is obtained; based on the preoperative lower limb image and the key point information of the prosthesis area, key points of a non-prosthesis area in the postoperative lower limb image are detected, and key point information of the non-prosthesis area is obtained. According to the method provided by the embodiment of the invention, accurate detection of the key points of the post-operation lower limb X-ray image can be realized without additionally establishing a deep learning model, and the model deployment efficiency of a lower limb skeleton intelligent measurement and calculation related system can be improved.

An extension-assisted hinged knee replacement comprises a femoral component, a tibial component, and a torque actuator operably interfacing the two components. The torque actuator is configured to apply extension torque based on the flexion angle of the knee, with the torque peaking between 0° and 90° of flexion. The implant may include a passive biasing element, which can be compressed or tensioned to enhance torque application, particularly during critical phases of knee extension.

A knee replacement prosthesis includes a distal femoral implant, including a femoral head portion, including an outer arcuate surface, and interior posterior surface, an interior distal surface disposed at a first angle with respect to the interior posterior surface, and a first interior intermediate surface joining the interior posterior surface and the interior distal surface and being disposed at a second angle with respect to the interior posterior surface and at a third angle with respect to the interior distal surface. The distal femoral implant includes stackable femoral spacers secured to at least one of the interior posterior surface and the interior distal surface, thereby adjusting an aggregate spacing between the interior posterior surface and / or the interior distal surface and a resected surface of a distal femur of the patient. A tibial implant is also provided. Related methods of use of either implant or both are also provided.

A knee alignment measurement tool for use during a total knee replacement surgery may include the following main components: a sensor assembly, a display unit configured to power up, operatively control the individual sensors of the sensor assembly, and display the readings therefrom, and a flexible gooseneck cable operatively connecting the sensor assembly to the display unit. The sensor assembly may include a rigid base supporting a circuit board, a left sensor and a right sensor positioned adjacent to the left center, and a cover sealed to the rigid base to enclose the left sensor and the right sensor, wherein the cover does not abut the rigid base during the compression of the sensor assembly.