26 results about "Total knee arthroplasty" patented technology

A method to facilitate a robotic total knee arthroplasty includes performing a plurality of femoral cuts on a femur, the performing the plurality of femoral cuts including performing a distal femoral cut of the plurality of femoral cuts, performing an anterior femoral cut of the plurality of femoral cuts, performing an anterior chamfer cut of the plurality of femoral cuts after the performing the distal femoral cut and the performing the anterior femoral cut, and performing a posterior femoral cut of the plurality of femoral cuts after performing all other femoral cuts of the plurality of femoral cuts. The method further includes performing at least one tibial cut on a tibia after the performing the plurality of femoral cuts on the femur.

An implant type or a process of implant fixation is automatically identified by processing surgical plan information. Further, bone mineral density information associated with a patient is determined by processing at least one image. The determined bone mineral density information and patient information representing at least demographics associated with the patient are processed, and a selection of a plurality of patients that previously underwent arthroplasty is made. Outcome information representing results of arthroplasty procedures is processed and a threshold is established representing a biomechanical tolerance. The bone mineral density information is processed to be determined associated with the patient is determined to be above or below the threshold.

An implant type or a process of implant fixation is automatically identified by processing surgical plan information. Further, bone mineral density information associated with a patient is determined by processing at least one image. The determined bone mineral density information and patient information representing at least demographics associated with the patient are processed, and a selection of a plurality of patients that previously underwent arthroplasty is made. Outcome information representing results of arthroplasty procedures is processed and a threshold is established representing a biomechanical tolerance. The bone mineral density information is processed to be determined associated with the patient is determined to be above or below the threshold.

A system for balancing a knee of a patient includes a force measurement device configured to measure forces between a femoral bone and a tibia bone as a force is applied to the knee and a computing system configured to determine a separation distance between a point or region associated with the femur and a point or region associated with tibia based on force information from the force measurement device. The force measurement device may include at least one paddle configured for placement between the femur and tibia and including at least one force sensing element for sensing forces associated with the femur or tibia. The computing system may be configured to normalize a measured force and identify the separation distance based on the normalized force, wherein the identified separation distance is substantially the same over a range of forces measured by the force measurement device.

1. The name of the design product: knee joint surgery gasket. 2. The use of the design product: gasket used in total knee arthroplasty; used for measuring knee joint pressure and changes and intraoperative soft tissue balance adjustment operation. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: assembly 1 perspective view 1. 5. Other components that need to be explained: component 1 is a knee joint surgery measurement gasket; component 2 is a knee joint surgery adjustment gasket.

The embodiment of the invention discloses wearable knee joint equipment, a knee joint rehabilitation evaluation method and computing equipment. The wearable knee joint equipment comprises a flexible substrate; the sensing unit is integrated on the flexible substrate and comprises an electromyographic sensing module used for collecting surface electromyographic signals of rectus femoris for driving the knee joint to move; the muscular tension sensing module is used for generating a muscular tension signal by detecting skin deformation caused by knee joint movement based on the piezoresistive effect; the joint angle sensing module is used for generating a knee joint motion range signal by detecting knee joint flexion and extension strain based on the piezoresistive effect; the signal processing module is connected with the sensing units and used for processing and wirelessly transmitting the surface electromyogram signals, the muscular tension signals and the knee joint movement signals to a computing device so that the computing device can determine the state evaluation result of the knee joint rehabilitation state based on the signals. The possibility is provided for remote dynamic monitoring of TKA postoperative rehabilitation, and the accuracy of rehabilitation state evaluation is improved.

Disclosed herein is an angled wall femoral component (500) of a cam-post knee arthroplasty system for posterior cruciate ligament (PCL) replacement total knee arthroplasty (TKA) or revision TKA (rTKA) procedures, such as cruciate ligament (CS), bilateral cruciate ligament (BCS), or posterior stabilization (PS) procedures. The angled wall femoral component may include a femoral box (502) configured to receive a tibial post (110) of a corresponding tibial component (100). The anterior wall (508) of the femoral box is angled anteriorly and may include an anterior cam (561). The anterior wall is angled anteriorly to allow clearance between the anterior side of the tibial post and the anterior wall, while allowing a movable engagement between the tibial post and the anterior cam during knee flexion and extension, to which the femoral component is implanted.

The 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.

Robotic systems for orthopedic surgery are provided. The robotic systems may include at least first and second motors coupled to each other. An output shaft of one of the motors may be connectable to a surgical tool guide. An output shaft of another of the motors may be coupled to a portion of a ball and socket joint. A corresponding portion of the ball and socket joint may be coupled to a bone mount which may be attached to a bone to mount the first and second motors to bone for performing orthopedic surgical procedures.

A system including a knee ranging tool: including a base configured to locate on a resected proximal face of a tibia in a knee of a patient; defining a tibial reference surface configured to run against a femoral surface of an artificial femoral component, installed on a distal face of a femur of the patient, during articulation of the knee of patient; including a set of stages interposed between the base and the tibial reference surface, configured to locate the tibial reference surface relative to the base, and compliant to medial-lateral translation, anteroposterior translation, and transverse rotation; and configured to indicate a medial-lateral translation offset, an anteroposterior translation offset, and a transverse rotation offset corresponding to a position of the tibial reference surface, relative to the base, that yields elastic deformation of ligaments in the knee over a range of motion of the knee.

A system and method may use a robotic arm to perform a range of motion test for use in generating information related to kinematic alignment in a total or partial knee arthroplasty. A method may include controlling a robotic arm to move a tibia throughout a range of motion for a knee. A series of measurements of gap distance for the knee may be used to determine a tibial resection location for the tibia. The method may include updating a plan (e.g., 3D, preoperative) for an orthopedic procedure on the knee with the tibial resection location.

A device for increasing the range of motion (ROM) of a patient's afflicted knee joint following total knee arthroplasty (TKA) comprising an apparatus for insertion onto the pedal of an existing recumbent stepper machine. The apparatus enhances the functionality of recumbent steppers by (1) increasing the ROM angle of the knee at every seat position by moving the patient's foot closer to the stepper seat and thus the patient's torso, and by (2) allowing more ankle flection and a deeper guard rail than the original pedal to help maintain heel contact with the apparatus throughout the session.

The present application relates to the technical field of bone cutting tools, and discloses a femur bone cutting tool in total knee arthroplasty, which comprises a fixing part, the fixing part comprises a fixing frame, the outer surface of the fixing frame is fixedly connected with a fixing nail sleeve, and the upper surface of the fixing frame is provided with a mounting groove; the locating part comprises a supporting frame, the bottom end of the supporting frame is fixedly connected with a mounting column which is in close contact with the inner wall surface of the mounting groove, and the outer side of the supporting frame is provided with an execution frame. The femur bone cutting tool in total knee arthroplasty can effectively solve the problem that the tool instruments used in femur joint bone cutting surgery in the prior art are composed of multiple independent parts, the measurement reference and the positioning reference of each tool are independent of each other, the reference transmission completely depends on manual connection in the tool dismounting and replacing process, the reference deviation is further aggravated, and thus the reference transmission is broken, and the surgery precision and efficiency are low.

The utility model belongs to the technical field of medical instruments, and particularly relates to a femur reference frame which is mainly used in robot-assisted total knee arthroplasty and is mounted on a femur of a patient, so that a robot can accurately identify and position the femur. The fixing part is provided with a first axis in the height direction; the connecting rod is provided with a first end and a second end, the first end is connected with the fixing part, the second end is located above the first end in the extending direction of the first axis, and the distance between the second end and the first axis is larger than that between the first end and the first axis; the reference frame is arranged on one side of the connecting rod, and the distance between the reference frame and the first end is larger than that between the reference frame and the second end; the problems that when an existing reference frame is installed on the femur of a patient, a surgical incision needs to be increased or lengthened, and movement of a mechanical arm of a surgical robot is hindered are mainly solved.

A method for predicting a type of surgery required for a patient comprises: receiving imaging data including at least one image acquired of a patient's anatomy; determining at least one parameter of the patient's anatomy based on the image data, the at least one parameter including at least one of a B-score and a C-score; receiving patient data regarding the patient; generating, based at least in part on the at least one parameter and the patient data, a predicted procedure for the patient; and outputting the predicted procedure for display within a graphical user interface (GUI).

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.

The utility model relates to a kind of knee joint soft tissue tension gap measurers, belong to total knee arthroplasty instrument technical field.Fixed detection plate lower part is connected with the inside of hand-held end body fixedly, tension and gap measuring device one and tension and gap measuring device two lower part are respectively located in hand-held end body, and bottom is fixedly connected with the bottom of fixed detection plate, movable detection plate one and movable detection plate two are respectively connected with the middle part of tension and gap measuring device one and tension and gap measuring device two.Advantage is novel structure, realize the simultaneous measurement to the gap distance of two sides inside and outside of knee joint and soft tissue tension, intraoperative operation is simple, it is convenient to compare the difference of inside and outside gap, and it is not easy to be affected by external influence and cause detection failure or surgical accident, can be sterilized and reused.

This invention discloses a system and method for predicting the risk of periprosthetic infection after knee arthroplasty, belonging to the field of medical data analysis and processing technology. The system includes: an image acquisition interference detection module, an initial infection area determination module, an infection risk area correction module, and a risk prediction result output module. This invention quantitatively determines the interference of metal artifacts in image acquisition by combining relevant image parameters, ensuring the authenticity and reliability of the input images. Based on this, the initial infection area determination module initially identifies the infection risk area around the prosthesis, and the infection risk area correction module further corrects the initially determined infection area, outputting a more accurate corrected infection risk area. Finally, the risk prediction result output module outputs the final infection risk prediction result based on the corrected dataset. Through the synergistic effect of the above modules, the accuracy of periprosthetic infection risk prediction after knee arthroplasty is significantly improved.

The embodiment of the invention is suitable for the technical field of computer-aided medical treatment, and provides an orthopedic surgery robot system and an orthopedic surgery intra-operative planning method, the system is connected with a pressure sensor, and the system comprises a data acquisition module used for acquiring bending and stretching data of legs of a patient; the data processing module is used for receiving the pressure data, collected by the pressure sensor, of the knee joint of the patient and generating intraoperative planning information based on the flexion and extension data and the pressure data; and the display feedback module is used for displaying the intra-operative planning information and guiding a surgeon to perform a total knee replacement operation on the patient. By adopting the system, the dynamic, automatic and accurate adjustment of the intraoperative operation planning can be realized, the dependence on the personal experience of doctors is reduced, and the soft tissue balance effect and the operation success rate are improved.

Provided in the present application is a comprehensive-orthopedic multi-indication artificial-intelligence surgical robotic system, comprising: a total hip arthroplasty module, which is used for performing preoperative planning, intraoperative total hip arthroplasty, and real-time display; a total knee arthroplasty module, which is used for performing preoperative planning, intraoperative total knee arthroplasty, and real-time display; a unicompartmental knee arthroplasty module, which is used for performing preoperative planning, intraoperative unicompartmental knee arthroplasty, and real-time display; a periacetabular osteotomy module, which is used for performing preoperative planning, intraoperative periacetabular osteotomy, and real-time display; a sports medicine module, which is used for bone tunnel planning, ligament reconstruction, and real-time display; a pedicle screw fixation navigation module, which is used for performing intraoperative navigation and positioning during pedicle screw fixation, and real-time display; and a trauma positioning and navigation module, which is used for performing intraoperative trauma positioning and navigation, and real-time display. By means of the embodiments of the present application, assistance can be quickly and accurately provided during surgery.

The invention relates to the technical field of knee joint rehabilitation apparatuses, and provides a joint rehabilitation apparatus after total knee replacement, aiming at solving the technical problems that the temperature of a compress bag cannot be adaptively adjusted according to the knee swelling degree of a patient by an existing ice compress device, and tiptoes of the patient cannot be trained while ice compress is performed on the patient. Comprising a base and a compress bag structure symmetrically arranged above the base, and further comprises a circulating temperature adjusting structure located between the base and the compress bag structure and used for adjusting the temperature of liquid in a compress bag; the pressure adjusting structure is located below the application bag structure, connected with the application bag structure and used for adjusting the water pressure in the application bag structure; and the tiptoe training structure is positioned above the base and is communicated with the circulating temperature adjusting structure. The temperature of the compress bag can be adaptively adjusted according to the knee swelling degree of a patient, tiptoes of the patient can be trained while ice compress is conducted on the patient, and more comprehensive and better rehabilitation training can be conducted on the patient.

The invention provides a knee joint prosthesis test mold device, which comprises a femoral condyle prosthesis test mold, an intercondylar fossa arranged on the outer surface of the femoral condyle prosthesis test mold; the laser transmitter is arranged in the intercondylar fossa; the tibia test mold assembly comprises a tibia platform prosthesis test mold and a tibia spacer test mold, the tibia spacer test mold is arranged on the surface, facing the femoral condyle prosthesis test mold, of the tibia platform prosthesis test mold, and the laser emitting end of the laser emitter faces the tibia spacer test mold; wherein the femoral condyle prosthesis test mold and the tibia test mold assembly have a relative rotation state and a relative static state, and when the femoral condyle prosthesis test mold and the tibia test mold assembly are in the relative rotation state, the femoral condyle prosthesis test mold can drive the laser transmitter to rotate relative to the tibia test mold assembly. According to the technical scheme, the problem that in the prior art, when total knee arthroplasty is carried out, the precision of the tibial prosthesis function rotation axis is poor is effectively solved.

A surgical cutting guide includes a body having at least one first cutting slot formed between a first cutting guide surface and an opposing second cutting guide surface. The first cutting slot extends longitudinally between a first end stop surface and an opposing second end stop surface. The first end stop surface has a first convex surface contour and / or the second end stop surface has a second convex surface contour. The surgical cutting guide can be used in a surgical procedure, such as a total knee arthroplasty.

The embodiment of the application is suitable for the technical field of computer-aided medical treatment, and provides an orthopedic surgery robot system and an intraoperative planning method for orthopedic surgery. The system is connected with a pressure sensor and comprises a data acquisition module, a data processing module and a display feedback module. The data acquisition module is used for acquiring flexion and extension data of a patient's leg. The data processing module is used for receiving pressure data of the patient's knee joint collected by the pressure sensor, and generating intraoperative planning information based on the flexion and extension data and the pressure data. The display feedback module is used for displaying the intraoperative planning information and guiding a surgeon to perform total knee arthroplasty on the patient. By using the above system, dynamic, automatic and accurate adjustment of intraoperative surgery planning can be realized, the dependence on the personal experience of the surgeon is reduced, and the effect of soft tissue balance and the success rate of surgery are improved.

This invention discloses a method, targets, and applications for the diagnosis and treatment of hemophilic arthritis. The method includes: obtaining cartilage and synovial membrane samples from patients with hemophilic arthritis undergoing total knee arthroplasty; performing single-cell RNA sequencing, single-cell ATAC sequencing, and spatial transcriptomics analysis to determine the main cell types and key cell subpopulations constituting the microenvironment of hemophilic arthritis; identifying the molecular characteristics and differentiation processes of chondrocyte and synovial fibroblast subpopulations; measuring intercellular interactions in the knee joint microenvironment of the samples; and identifying specific regulatory transcription factors in hemophilic arthritis through paired epigenetic analysis to identify diagnostic and therapeutic targets for hemophilic arthritis. This method integrates single-cell multi-omics analysis to analyze the cellular characteristics of synovial and cartilage tissues and their interactions in the epigenetic pathogenic mechanism, identifying potential therapeutic targets.