62 results about "Knee joint replacement operation" patented technology

The invention discloses an adjustable positioning module, a knee joint replacement positioning platform and a knee joint replacement positioning method.The adjustable positioning module comprises a positioning table; the first supporting plate is used for supporting the upper body of the human body; the second supporting plate is used for supporting the legs of the human body, and the second supporting plate is in an inverted V shape; the third supporting plate is used for supporting the feet of the human body; the first supporting plate is obliquely and slidably arranged on the positioning table, a first driving mechanism used for driving the first supporting plate to obliquely and linearly slide relative to the positioning table is arranged on the positioning table, the second supporting plate is horizontally and linearly slidably connected to the positioning table, and the third supporting plate is slidably arranged on the positioning table. The positioning table is provided with a second driving mechanism used for driving the third supporting plate to vertically and horizontally slide linearly relative to the positioning table. The knee joint osteotomy device can be suitable for patients with different leg lengths, knee joint replacement surgery is facilitated, and the convenience and accuracy of osteotomy operation can be improved.

A method for optimizing a knee arthroplasty surgical procedure includes receiving pre-operative data comprising (i) anatomical measurements of the patient, (ii) soft tissue measurements of the patient's anatomy, and (iii) implant parameters identifying an implant to be used in the knee arthroplasty surgical procedure. An equation set is selected from a plurality of pre-generated equation sets based on the pre-operative data. During the knee arthroplasty surgical procedure, patient-specific kinetic and kinematic response values are generated and displayed using an optimization process. The optimization process includes collecting intraoperative data from one or more surgical tools of a computer-assisted surgical system, and using the intraoperative data and the pre-operative data to solve the equation set, thereby yielding the patient-specific kinetic and kinematic response values. A visualization is then provided of the patient-specific kinetic and kinematic response values on the displays.

A modular instrument system for use in a knee joint replacement operation includes a tibial component, a first femoral component, a second femoral component and at least one spacer element. The different components of the modular instrument system are releasably connectable to one another to form different instrument configurations.

The utility model relates to the technical field of medical instruments, in particular to a multi-scene use bone hammer which comprises a handle rod, a bone hammer column head arranged at one end of the handle rod, a first bone hammer head arranged at one end of the bone hammer column head and a second bone hammer head arranged at the other end of the bone hammer column head. And the second bone hammer head is a plastic bone hammer head. In a knee joint replacement operation, an original bone surface needs to be cut off, a bone hammer and a bone knife are used in cooperation, at the moment, a first bone hammer head (namely a metal bone hammer head) needs to be used for knocking the tail of the bone knife, bone cutting is achieved, and after the bone is cut off, a metal joint is fixed to the surface of the joint after the bone is cut off; the second bone hammer head (namely the plastic bone hammer head) is used for knocking a metal joint, fixation and replacement of the joint are achieved, the applicability of the bone hammer is improved, and the multi-scene use requirements of the bone hammer are met.

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.

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.

A surgical instrument for use in a knee joint replacement operation having a first fastening device, a second fastening device, a guiding device connected at one end to the first fastening device and at the other end to the second fastening device and by which the second fastening device is pivotably movable in a manner guided relative to the first fastening device in a sagittal guiding plane, and an alignment rod configured for alignment with respect to an anterior edge of a tibia. The alignment rod is releasably connected to the second fastening device in a rigid manner.

The invention aims to provide an adjustable knee joint flexion maintaining device for knee joint replacement surgery, and relates to the technical field of medical instruments. A thigh supporter and a shank supporter are arranged on a supporting plate; during use, the thighs and the shanks of a patient are placed on the thigh plates and the shank plates of the thigh supporting device and the shank supporting device, the thigh plates are supported below the thighs, the shank plates are supported below the shanks, and the peripheries of knee joints are fully exposed; by rotating the thigh screw rod and the shank screw rod, the angles of the thigh plate and the shank plate are adjusted, and the knee joint buckling angle is adjusted; the distance between the thigh supporter and the shank supporter is adjusted through sliding of the thigh supporter; the height of the lower portion of the shank plate is adjusted through stretching of the telescopic rod, the bending angle of the knee joint and the height of the shank are further adjusted in cooperation with rotation of the shank plate, and the position of the lower limb can be better adjusted according to actual knee joint operation conditions.

The invention discloses a deformation error compensation method for a dilator in total knee arthroplasty, and aims to solve the problem of measurement errors caused by deformation of a cantilever structure. The method comprises the following steps of: firstly, performing parameterized dynamic modeling and simulation on an external execution mechanism through finite element software, calibrating a model by combining actual measurement data of a physical prototype, and constructing a high-precision deformation data set; then, the data set is used for training a BP neural network optimized through a genetic algorithm, and the network takes the applied force and the displacement measurement value which are collected in real time as input and outputs a real displacement value after compensation. And finally deploying the trained lightweight network model in an embedded processing unit of the spreader to realize real-time error compensation. According to the method, complex nonlinear deformation errors are effectively compensated, the average absolute error is reduced to 0.056 mm, the real-time response delay is smaller than or equal to 5 ms, the method is remarkably superior to a traditional linear method, more accurate gap measurement is provided for an operation, and the method can be further used for forming closed-loop control and improving the intellectualization and precision of the operation.

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 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.

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.

Embodiments of the present application are applicable to the technical field of computer-aided medical treatment and surgical planning, and provide a single-condyle mobile platform surgical planning method and a computer device. The method comprises: determining a plurality of prostheses to be planned, the prostheses comprising femoral prostheses and tibial prostheses, and the femoral prostheses all being spherical prostheses; placing the femoral prostheses with the distal end point of a pre-constructed femur three-dimensional model as the center, and adjusting the femoral prostheses to target femur positions; calculating femur section coverage rates of the femoral prostheses at the target femur positions; determining a target femoral prosthesis from the plurality of femoral prostheses according to the femur section coverage rates; determining a target tibial prosthesis from the plurality of tibial prostheses, and performing preoperative planning of a single-condyle mobile platform knee joint replacement surgery based on the target tibial prosthesis and the target femoral prosthesis. By using the above method, preoperative prosthesis planning can be performed for single-condyle knee joint surgery of a mobile platform.

Surgical instrument (1) for use in knee replacement surgery, comprising a first fastening device (100) which is designed for detachable fastening to a reference component (600) attached to a distal femur (F), a second fastening device (200), which is spaced distally from the first fastening device (100) and is designed for detachable fastening to a tibial cutting block (700) for cutting on a proximal tibia (T), a circular arc guide (300) which is connected at one end to the first fastening device (100) and at the other end to the second fastening device (200) and by means of which the second fastening device (200) is guided linearly movable relative to the first fastening device (100) in a sagittal guide plane (E) along a longitudinally extended circular arc guide track (C), a first linear guide (400) by means of which the circular arc guide (300) is connected at one end to the first fastening device (100) and is guided linearly movable relative to the same in the guide plane (E) along an anteroposteriorly longitudinally extended first guide track (L1), and a second linear guide (500), by means of which the second fastening device (200) is connected at the other end to the circular arc guide (300) and is guided linearly movable relative to the same in the guide plane (E) along an anteroposteriorly longitudinally extended second guide track (L2).

A TRIAL PATELLA COMPONENT KIT 5 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 10 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 15 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. 20 25 20 25 66 10 A pr 2 02 5 A B S T R A C T 2 0 2 5 2 0 2 5 6 6 1 0 A p r 2 0 2 5 A T R I A L P A T E L L A C O M P O N E N T K I T

This invention discloses an extramedullary tibial osteotomy device for knee replacement surgery, belonging to the field of medical device technology. The device includes a main connecting rod, with an ankle fixation module below it. The ankle fixation module includes an ankle connecting seat, and an angle adjustment module for adjusting varus / valgus and anteversion / anteroversion angles is located behind the ankle connecting seat. The lower end of the main connecting rod is fixed to the angle adjustment module. Above the main connecting rod are a tibial measurement module and a tibial osteotomy module. An upper navigation module and a lower navigation module are respectively located at the upper and lower ends of the main connecting rod. Both the upper and lower navigation modules contain remote sensing modules for acquiring the tibial varus / valgus and anteversion / anteroversion angles. This invention's extramedullary tibial osteotomy device for knee replacement surgery is simple to operate, has a short operation time, and is inexpensive.

The invention discloses a knee joint point cloud registration method, device and equipment and a medium, and relates to the technical field of medical image processing, and the method can be used for carrying out registration on knee joint point clouds which are obtained by CT (Computed Tomography) image reconstruction and are acquired by point cloud acquisition equipment and have different modalities, and is used for guiding a knee joint replacement operation. According to the method, the registration between the point cloud reconstructed by the CT scanning before the knee replacement operation and the point cloud acquired by the point cloud acquisition equipment during the operation can be effectively realized, the special shape information of the point cloud is effectively processed, the difficulty of low overlapping rate of the point cloud is overcome, and accurate information is provided for augmented reality operation navigation.

The present invention discloses a control method for improving the follow-up stability of the end of a robotic arm, including: the robotic arm receives the end target posture P inital ; based on the current posture of the robotic arm, filter the end target posture P inital to obtain the posture P filter after noise elimination; correct the posture P filter to obtain the corrected posture P correct ; transform the posture P correct to the end coordinate system of the robotic arm to obtain the final posture P final ; control the robotic arm to move to the final posture P final . When the robotic arm of the knee replacement surgical robot system performs bone cutting, the present invention can track the cutting plane in real time; at the same time, it can eliminate the jitter and possible errors during the bone cutting tracking of the robotic arm, and improve the bone cutting accuracy and user experience.

The present apparatus is a tool that holds and positions the tibial insert to improve the process of inserting the insert during a knee replacement operation. The apparatus comprises an arcuate convex shape that receives and holds the insert in place. The apparatus can be attached to a handle to provide greater ease of use, more reliable handling, and easier placement. The apparatus is made to have a pressure fit on the insert to firmly hold it in place, while still allowing it to be pulled off after the insert has been placed.

The embodiment of the invention is suitable for the technical field of computer-aided medical technology and surgical robots, and provides a movable platform single-condyle surgical robot system, equipment and a computer program product, the system comprises a preoperative planning module, which is used for determining the implantation position of a surgical tool combination and a prosthesis; the intra-operative navigation module is used for performing joint gap balance evaluation based on the implantation position and determining the model of a first drilling tool to be used according to a joint gap balance evaluation result; and the intra-operation execution module is used for controlling the mechanical arm to operate each operation tool in the operation tool combination to execute each step of the movable platform unicompartmental knee replacement operation. By the adoption of the system, the type of the drilling tool can be directly determined according to the joint gap balance evaluation result, drilling tools of multiple types do not need to be evaluated in sequence, operation efficiency is improved, and the influence on a patient in the process of evaluating the type of the drilling tool is relieved.

Systems and techniques can be provided to generate sensorized insights into the characteristics of a knee joint space during a knee replacement procedure. In some implementations, a sensor support body carrying one or more sensors can be used to measure and inform the clinician of the varus / valgus angles of the tibia and femur, allowing the clinician to adjust the surgical procedure to accommodate the measured angles. The clinician may simulate changes to the load balance across the knee joint in response to potential dimensional changes to the knee joint prior to actually surgically implementing the changes.

This application relates to a simulation training method for total knee arthroplasty prosthesis positioning and gap balancing, belonging to the field of simulation training technology. To provide a standardized and repeatable workflow for individualized planning of total knee arthroplasty surgery, this application provides a simulation training method for total knee arthroplasty prosthesis positioning and gap balancing. This method includes determining the amount of osteotomy on the posteromedial femoral condyle based on the thickness of the femoral prosthesis's posterior condyle; determining the rotational alignment parameters of the femoral prosthesis based on a femoral trochlea model to obtain a patellar trajectory that meets the requirements; determining the placement of the tibial prosthesis on the tibia with the knee joint model in a flexed state; and determining the placement of the femoral prosthesis on the femur with the knee joint model in an extended state. This method enables individualized planning of total knee arthroplasty surgery, precise prosthesis positioning, flexion-extension gap balancing, and standardized training of the surgical procedure, improving surgical accuracy and postoperative outcomes.

This invention relates to the field of medical device technology, providing a leg fixation bracket, fixation method, and medical device for knee replacement surgery. The bracket includes a clamping unit and a universal adjustment unit. The universal adjustment unit includes a first ball-head base fixed to the clamping unit, a second ball-head base for connecting a Kirschner wire guide, at least one adjusting rod connecting the two ball-head bases, and a locking mechanism for simultaneously locking the relative positions of the ball-head bases and the adjusting rod. The fixation method includes: fixing the clamping unit to the operating table side rail; releasing the locking mechanism and adjusting the posture to align the Kirschner wire guide with a predetermined insertion point. This invention achieves simultaneous multi-point locking through a single locking mechanism, making operation simple and locking reliable; the clamping unit can clamp bidirectionally to adapt to different operating table side rails; the overall purely mechanical structure requires no electrical components, ensuring high safety and effectively improving the stability and efficiency of knee replacement surgery.

A system of patient-matched and surgeon-specific single use surgical instruments designed for five different applications for knee replacement surgeries; primary total knee replacement, custom-made total knee replacement, revision total knee replacement, hinged total knee replacement and partial knee replacement. The system has patient-matched & surgeon-specific instruments are designed & prepared for each case based on patient's need and surgeon's demand. The system contains patient-matched set of blocks and guides, “On-Demand” surgeon-specific Instruments sets, conventional instruments sets, surgical planning software, 3D printing Software, 3D printers and sterilization unit. All the system components are manufactured by using 3D printing technologies.

The embodiment of the invention is suitable for the technical field of computer-aided medical treatment and surgical planning, and provides a single-condylar movement platform surgical planning method and computer equipment, the method comprises the following steps: determining a plurality of to-be-planned prostheses, the prostheses comprise thighbone prostheses and tibia prostheses, and the thighbone prostheses are spherical prostheses; placing the thighbone prosthesis by taking a thighbone far end point in a pre-constructed thighbone three-dimensional model as a circle center, and adjusting the thighbone prosthesis to a thighbone target position; calculating a thighbone section coverage rate of the thighbone prosthesis at the thighbone target position; a target femoral prosthesis is determined from the multiple femoral prostheses according to the femoral section coverage rate; and determining a target tibial prosthesis from the plurality of tibial prostheses, and carrying out preoperative planning of a unicompartmental knee joint replacement operation based on the target tibial prosthesis and the target femoral prosthesis. By adopting the method, preoperative prosthesis planning can be carried out aiming at the unicompartmental knee joint operation of the movable platform.

1. Name of the product in this design: Graphical User Interface for Orthopedic Surgical Navigation and Control of Electronic Devices. 2. Intended use of this design: for use in an electronic device. 3. The key design features of this product are its graphical user interface. 4. The image or photograph that best illustrates the design's key points: the front view. 5. Application of the graphical user interface: for navigation control and information display in robot-assisted orthopedic surgery. 6. Human-computer interaction method of graphical user interface: On the surgery type selection page shown in the main view, select the "Total Knee Replacement Surgery" card to enter the change state diagram 1. Select the item to open the preview page of the knee joint scheme shown in Figure 2, which represents the change state. Click "Navigation" in Change State Diagram 2 to enter Change State Diagram 3. Click "Next" to proceed to the changed state diagram (Figure 4). Click "Finish" to enter the changed state diagram (Figure 5). Click the right button next to "Navigation Steps" to enter the changed state diagram 6. Click "Verify" to enter the changed state (Figure 7). Click the right-hand button next to "Joint Registration" to enter the changed state (Figure 8). Click "Gap" to enter the changing state (Figure 9). Click "Full Process" to enter the change status diagram (Figure 10). Click the right button next to "Intraoperative Assessment" to enter the changed state (Figure 11). Click "OK" to enter the changed state (Figure 12). Click the button with "A" at the bottom to enter the changed state (Figure 13). Click "Apply" to enter the changed state (Figure 14). Click the right button next to "Osteotomy Navigation" to enter the changed state (Figure 15). The gray-coated area represents the content image.

A method and apparatus for joint balance adjustment for joint replacement procedures is disclosed. An example of a knee balance adjustment fixture may include a tibial positioning guide and / or at least one balance adjustment assembly configured to be mounted on a tibial reference in a generally medial-lateral orientation at a generally anterior position relative to the knee. The balance adjustment assembly may include a vertical guide configured to be releasably mounted on the tibial positioning guide in a generally downward-upward orientation, at least one posteriorly extending paddle selectively movable vertically along the vertical guide, the paddle configured to selectively engage with the distal femur and / or proximal tibia, and / or at least one pin guide selectively movable vertically along the vertical guide, the at least one pin guide including at least one opening configured to receive at least one of a drill bit and a bone pin.

The invention discloses a tibia spacer installer, and relates to the technical field of medical instruments.The tibia spacer installer comprises a main body with one end provided with a sliding way and a special-shaped block installed in the sliding way in a sliding mode, a handle is rotatably installed on the main body, and an elastic piece is arranged between the main body and the handle; one end of the handle is inserted into the slide way in a penetrating mode and hinged to a connecting block, one end of the connecting block is hinged to the special-shaped block, a push block is arranged at one end of the special-shaped block, in the operation process, the main body and the handle are used for providing stable supporting, and the elastic piece is used for achieving the pressing and resetting functions of the gasket installer; the connecting block and the special-shaped block transmit force on the handle to the push block, the main body is matched with the push block to press the tibia platform on the tibia platform, the mounting efficiency is improved, the gasket mounting device is compact in structure and convenient and fast to operate, and the tibia gasket mounting precision and safety in the knee joint replacement surgery are remarkably improved.

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 first computer program, which, when executed by the processor, causes the processor to execute a first operation mode of the surgical upper computer. The first operation mode includes: displaying, through an interaction interface, first information to be input to the user, where the first information to be input includes the magnitude range and change interval of the thrust applied between the femur and the tibia; in response to the information input by the user, controlling the abutting member and the push plate to apply different thrusts at a preset joint angle, and collecting the corresponding relationship data between the thrust and the gap; and visually displaying the corresponding relationship data. According to the embodiments of the present application, the forces and gaps of soft tissues in knee replacement surgery can be collected and displayed in a reasonable manner.