216 results about "Bone model" patented technology

A system for computer assisted navigation during surgery includes a computer platform that operates to register a target surgical area of a patient. In certain cases, a process includes: obtaining a pre-op CT image of a pelvic region of a patient and intra-operatively obtaining a point cloud data about the pelvic region with a navigated instrument, generating a 3D bone model which excludes non-targeted area such as a femur, and then merging the 3D bone model to the point cloud to register the target surgical area.

A system for computer assisted navigation during surgery includes a computer platform that operates to register a target surgical area of a patient. In certain cases, a process includes: obtaining a pre-op CT image of a pelvic region of a patient and intra-operatively obtaining a point cloud data about the pelvic region with a navigated instrument, generating a 3D bone model which excludes non-targeted area such as a femur, and then merging the 3D bone model to the point cloud to register the target surgical area.

A system for computer assisted navigation during surgery includes a computer platform that operates to register a target surgical area of a patient. In certain cases, a process includes: obtaining a pre-op CT image of a pelvic region of a patient and intra-operatively obtaining a point cloud data about the pelvic region with a navigated instrument, generating a 3D bone model which excludes non-targeted area such as a femur, and then merging the 3D bone model to the point cloud to register the target surgical area.

The invention provides a physical training posture correction method based on machine vision, which comprises the following steps: acquiring an athlete training image sequence through a multi-view image acquisition system and preprocessing the athlete training image sequence, extracting three-dimensional posture key points of a human body by utilizing a depth posture recognition model, constructing a skeleton model and calculating real-time kinematics characteristic parameters, and performing multi-dimensional comparison with standard parameters to generate a posture deviation evaluation report, thereby generating a personalized multi-modal correction feedback scheme, and establishing a personal athlete movement feature database to realize adaptive standard parameter optimization. According to the method, the training postures of athletes can be accurately recognized and corrected in real time, the training effect can be improved, sports injuries can be prevented, and training individuation and scientificity are improved.

A system for computer assisted navigation during surgery includes a computer platform that operates to register a target surgical area of a patient. In certain cases, a process includes: obtaining a pre-op CT image of a pelvic region of a patient and intra-operatively obtaining a point cloud data about the pelvic region with a navigated instrument, generating a 3D bone model which excludes non-targeted area such as a femur, and then merging the 3D bone model to the point cloud to register the target surgical area.

The invention discloses a skeleton model manufacturing method based on a 3D printing technology, and relates to the technical field of medical treatment, and the method comprises the steps: collecting the multi-modal image data of the skeleton of a patient, carrying out the image segmentation and reconstruction, and generating a digital three-dimensional model of the skeleton of the patient; carrying out mechanical optimization and material distribution adjustment on the digital three-dimensional model by utilizing a topological optimization algorithm, designing a bionic microstructure, and outputting a three-dimensional skeleton model subjected to optimization and bionic design; the bone model which is detected to be qualified is used for generating a personalized mold, and a prosthesis which is completely matched with the bone of the patient is customized through the mold; preoperative simulation and design of a prosthesis implantation scheme are carried out based on the skeleton model, and a personalized prosthesis and an operation scheme matched with the skeleton of the patient are obtained; the structural rigidity is maximized and the material consumption is minimized by utilizing a topological optimization algorithm, so that the bone model can better meet the biomechanical requirements of a patient, and meanwhile, the bionic characteristics and mechanical properties of the model are enhanced through the bionic microstructure design.

The invention relates to the technical field of orthopedic surgery, in particular to a system for automatically planning a screw channel range, which comprises a medical image acquisition module used for receiving and preprocessing CT, MRI and other medical images from medical equipment; the three-dimensional reconstruction module is used for performing three-dimensional reconstruction on the preprocessed two-dimensional medical image to generate a three-dimensional skeleton model; the multi-constraint path planning module is used for planning a candidate path set meeting anatomical and mechanical constraints in the three-dimensional skeleton model; the parameter calculation module is used for calculating path information of the candidate path set; and the visualization module draws a screw channel based on the path information and displays related parameters. The method has the advantages that the candidate path set meeting various anatomy and mechanical constraints can be planned in the three-dimensional skeleton model, the path length and the path included angle are calculated according to the candidate path set, the screw channel is drawn based on the path information, and the accuracy and safety of surgical planning are improved.

The invention provides a method for acquiring a three-dimensional model of an ankle skeleton of a human body by simulating load-bearing CT scanning. The method comprises the following steps: acquiring CT scanning data; uploading the CT scanning data to medical image processing and three-dimensional reconstruction software to obtain an initial scanning image; constructing a three-dimensional model according to the initial scanning image; and carrying out model verification on the three-dimensional model to obtain a skeleton three-dimensional model. According to the method, the high-resolution three-dimensional model of the ankle skeleton can be obtained, and reliable support is provided for medical research, clinical diagnosis and treatment of the ankle and research and development of medical instruments. Compared with a traditional method, the data obtained by simulating the load is more practical, the model quality is remarkably improved through the advanced technology and algorithm, and development of related research and application in the medical field is promoted.

The invention relates to the field of rehabilitation management, and discloses an orthopedic patient rehabilitation process tracking system comprising a patient data acquisition module used for acquiring joint motion parameters and three-dimensional skeleton point cloud data of an orthopedic patient; the muscle model building module is used for building a skeleton model of the orthopedic patient, defining skeleton degree-of-freedom motion of the skeleton model and building a specific skeleton-muscle model; the monitoring network construction module is used for determining a distributed flexible strain sensor and an epidermal electrode of the orthopedic patient, defining an ad hoc network protocol of the distributed flexible strain sensor and the epidermal electrode, and constructing a flexible electronic monitoring network; the monitoring network data acquisition module is used for monitoring local muscle electrical activity and mechanical stress distribution of the orthopedic patient; and the rehabilitation process tracking module is used for executing rehabilitation process tracking of the orthopedic patient after analyzing a function recovery curve of the orthopedic patient by using the joint contact force and the ligament strain energy. The evaluation accuracy of the rehabilitation process of the patient can be improved.

The invention relates to the technical field of image simulation modeling, in particular to a medical instrument visual simulation method based on data recognition. The method comprises the following steps: carrying out rotation angle calibration on a medical instrument, and carrying out rotation angle X-ray projection data acquisition to obtain multi-view projection image sequence data; performing three-dimensional skeleton model optimization according to the multi-view projection image sequence data to generate an optimized skeleton scanning three-dimensional model; performing potential fracture probability processing on the multi-view projection image sequence data based on the optimized skeleton scanning three-dimensional model to generate potential fracture probability data; and carrying out fracture area marking on the optimized bone scanning three-dimensional model through the potential fracture probability data, and carrying out part stress analogue simulation to obtain a three-dimensional visual fracture report. According to the method, accurate marking of the fracture area and visual report generation are realized through reconstruction of the three-dimensional space model of the scanned image, and the accuracy and efficiency of fracture detection are remarkably improved.

The invention relates to the technical field, in particular to a skeletal animation display method which comprises the steps of creating a static model based on a modeling tool, adjusting topological structures of high and low density areas of joints, verifying the symmetry of the model and correcting and optimizing the model. Establishing a skeleton hierarchy and a father-child skeleton chain based on the model; associating model vertexes to a skeleton system to establish an influence relationship, and optimizing weight parameters; the posture of the skeleton at different time points is defined by setting a key frame, and the animation effect is achieved; and ensuring that the animation basic logic is correct, and testing the motion state characteristics of the skeleton model. According to the skeleton animation display method and device, the equipment and the storage medium, the vertex density of the joint area is adjusted, symmetry processing is carried out, and weight gradual change processing and weight normalization verification are provided, so that the problem that a skeleton model is easy to tear, deform and distort in the animation can be solved; and meanwhile, a skeleton chain hierarchical structure is constructed, and the adaptability of a skeleton system and the model is further enhanced based on an IK controller.

The invention provides a method and a system for generating a skeleton by matching animation data, and belongs to the technical field of animation character construction. Comprising the following steps that S1, biological skeletons of a role are established, and the biological skeletons at different positions have unique codes and the same initial length but are not completely the same in shape; s2, constructing a complete skeleton model; s3, adjusting the length of each biological skeleton according to the height of the role and whether the next section of adjacent biological skeleton exists or not; and S4, according to the pose matrix of the corresponding biological skeleton in each frame of character animation data, the animation data uses the same coding mode as the biological skeleton, the corresponding biological skeleton in the skeleton model is adjusted to the corresponding position, and a biological skeleton image of each frame is generated. According to the method, a certain number of biological skeletons are preset and sequentially coded, the number and the positions of the biological skeletons are adjusted according to the body type, the biological skeleton combination structure conforming to the character image is constructed, and the skeleton animation file of the character is further obtained.

The invention discloses a manufacturing method of a 3D printing guide plate for a cervical vertebra single-door operation, and relates to the technical field of crossing of medical auxiliary instruments and additive manufacturing. Firstly, a cervical vertebra CT data three-dimensional reconstruction skeleton model is obtained, an operation scheme is virtually planned, then a navigation template digital prototype is generated through parameterization, finite element simulation optimization is carried out, and a three-dimensional 3D printing guide plate for the cervical vertebra single-door operation is obtained. Printing with the biocompatible resin by using light curing equipment, and finally treating to obtain a final product. According to the method, a high-precision cervical vertebra skeleton model is generated through CT thin-layer scanning and three-dimensional reconstruction, parameters of a hinge area, a door opening groove line and a nail path are determined through virtual planning, and the problem that damage or positioning deviation is easily caused due to the fact that a traditional operation depends on experience is solved; constructing a navigation template attaching curved surface by a specific algorithm, reserving a soft tissue compensation gap, matching with a hollow window bulge to limit the depth of an abrasion drill, controlling the deformation of a guide plate through finite element simulation and topological optimization, selecting specific resin to ensure the stability, ensuring the suitability by virtue of virtual registration and standardized manufacturing, and improving the accuracy, safety and efficiency of an operation.

Aspects of the present disclosure relate to systems and methods for performing operations including: receiving a plurality of bone scaling factors, each bone scaling factor corresponding to a respective bone of a bone model; receiving a plurality of joint angle factors that jointly define a pose of the bone model; generating a bone model based on the received bone scaling factors and the received joint angle factors; generating a base surface based on the plurality of bone scaling factors; generating an identity surface by deforming the base surface; and generating a 3D body model by mapping the identity surface to the posed bone model.

The invention discloses an intelligent process automatic regulation and control method for orthopedic treatment. The method comprises the following steps: S100, acquiring a multi-dimensional data set of a patient; s200, generating a treatment strategy set based on the multi-dimensional data set; the step S200 comprises the following sub-steps: S201, inputting the three-dimensional skeleton model into a deep learning network for pathological feature extraction, and obtaining skeleton defect region positioning and generating a dynamic strategy; and S202, generating a treatment strategy set and performing priority management. Compared with the prior art, the method has the following advantages and effects that various data of the patient are collected and processed, the personalized treatment strategy is generated, bone defects and cross-layer injuries can be efficiently recognized, dynamic risk assessment and treatment strategy optimization are carried out, and therefore the accuracy and effectiveness of orthopedic treatment are improved.

Methods, devices and systems for planning, monitoring, simulating and / or evaluating a knee surgery procedure. Imaging data of the lower limb is acquired. Interpretable 3D models are generated and combined with static and dynamic parameters into an enhanced bone model. Intervention strategy is simulated. Deviations from the intervention strategy are monitored during surgery. Clinical outcome is predicted from machine learning. Methods for calibrating knee surgery imaging data, establishing an alignment reference frame, and simulating an intervention strategy in a knee surgery procedure.

The invention discloses an isolator for establishing a bone nonunion animal model and a preparation method of the isolator, and relates to the technical field of medical instruments, and the preparation method comprises the following steps: step 1, obtaining a hydrogen-containing silicone oil prepolymer with a side chain containing Si-H bonds; 2, obtaining a silica gel macromonomer with an epoxy group on a side chain; step 3, obtaining an anti-inflammatory functionalized silica gel macromonomer; 4, reconstructing the skeleton model in a three-dimensional manner, and creating a defect isolator model; 5, adding the anti-inflammatory functionalized silica gel macromonomer obtained in the step 3 and a reactive diluent into a mixing tank, adding a cross-linking agent and polyether modified polydimethylsiloxane under mechanical stirring, stirring for 30 minutes, defoaming for 2 hours under 500Pa vacuum, and standing and curing in a darkroom after defoaming; and 6, a multi-material-box DLP photocuring 3D printer is adopted for isolator printing. According to the method, observation interference on the bone nonunion pathological process is fundamentally reduced, and high-fidelity modeling construction is achieved.

The invention provides a method for designing an osteotomy surface of an osteotomy guide plate, which belongs to the field of medical instruments and comprises the following steps of: establishing an xoz coordinate system in a sagittal view image on a three-dimensional bone model, and establishing a yoz coordinate system in a coronal view image on the three-dimensional bone model; in the three-dimensional coordinate system, on the basis that the highest point of the normal tibia part is a point P1, the osteotomy surface S1 passes through the point P1 and is parallel to the xoy surface, the spatial position of the osteotomy surface S1 in the three-dimensional coordinate system is obtained; an osteotomy line L1 is determined in a sagittal image, an osteotomy line L2 is determined in a coronal image, and the spatial position of an osteotomy surface S2 in a three-dimensional coordinate system is obtained based on the osteotomy line L1 and the osteotomy line L2; the first osteotomy surface and the second osteotomy surface of the osteotomy guide plate are set according to the 3D printing technology in combination with the relative position relation of the osteotomy surface S1 and the osteotomy surface S2, the osteotomy guide plate is obtained, the osteotomy guide plate is designed according to the osteotomy plane equation, and operation errors are reduced.

Methods, systems, and devices for treating osteochondral defects (OCDs) are disclosed. The disclosed methods and systems include collecting joint surface data using image-free methods, generating a three-dimensional (3D) healthy bone model based on the joint surface data and a database of healthy bone anatomies, defining the OCD boundary on the joint, generating a 3D implant model based on the 3D healthy bone model and the OCD boundary, manufacturing an implant based on the 3D implant model, generating an implantation plan, the resected cavity on the joint. The implant includes a 3D-printed titanium alloy substrate having a first and second porous layer separated by a nonporous layer. A polymer material is over-molded onto the second porous layer and treated to exhibit properties that mimic cartilage, while the first porous layer allows the implant to fuse to patient bone.

A method includes displaying, on a graphical user interface, a planned position of a virtual implant model relative to a virtual bone model of a bone. The virtual implant model includes a plurality of virtual screw holes offset from a central axis of the virtual implant model. The method also includes determining a planned rotational orientation of the virtual implant model by rotating, on the graphical user interface, the virtual implant model about the central axis of the virtual implant model such that the plurality of virtual screw holes rotate about the central axis. The method also includes controlling a robotic device to guide preparation of the bone to receive a physical implant in the planned position. The method also includes providing computer-assisted navigation configured to guide the physical implant into physical rotational alignment with the planned rotational orientation of the virtual implant model.

This invention relates to the field of dental implant tool technology, specifically to a method for analyzing the deviation of dental implant positioning guides based on digital simulation. The method includes: acquiring a scanned model of the guide, an oral STL model, and an alveolar bone model of the patient to be tested; determining the oral contact error factor corresponding to each triangular facet of the guide, and selecting the contact triangular facets; determining the target support strength corresponding to the contact triangular facet based on the distance and directional deviation between the contact triangular facet and the alveolar bone model, and the oral contact error factor corresponding to the contact triangular facet; acquiring the guide hole axis and guide plate fitting error; determining the local support degree of the contact triangular facet in a preset direction; and determining the target guide plate deviation based on the guide plate fitting error and all local support degrees. This invention, by combining the guide plate fitting error and the support status of the guide plate in different areas, relatively objectively quantifies the guide plate deviation, thereby improving the rationality of the guide plate deviation analysis.

The present invention aims to provide a technology that can more easily and accurately determine the posture of bones of characters that virtually represent humans, etc. in a virtual space, or robots, etc. existing in a real space. In a skeletal model in which a parent bone and a child bone are connected by a joint, the posture determination method of the present invention, which determines the posture of a child bone using a plurality of parameters defining the rotation of the child bone relative to the parent bone, comprises the steps of making a judgment on at least one of the plurality of parameters, correcting the plurality of parameters based on the judgment result, and determining the posture of the child bone using the corrected plurality of parameters. The step of making a judgment includes making a first judgment on whether any one of the plurality of parameters exceeds a first limit, wherein the first limit is expressed as a limit in which at least one parameter affects a limit related to two or more other parameters. The step of correcting the plurality of parameters includes, if the first judgment result determines that the first limit has been exceeded, a step of correcting the plurality of parameters using the first limit so that the plurality of parameters are within the range of the first limit.

This invention relates to the field of orthopedic surgical risk assessment, and in particular to a method and system for orthopedic surgical risk assessment. By acquiring preoperative and intraoperative data of a patient's orthopedic surgery, the method preprocesses the preoperative and intraoperative data, extracts the spatial features of bone microstructure from the initial orthopedic surgical data using a cascaded feature extraction network, calculates the correlation weights between imaging data and biological signals through a cross-modal attention mechanism, and constructs a patient-specific bone model based on finite element analysis to simulate the characteristic orthopedic surgical data in real time. The method simulates the distribution of joint contact stress at different osteotomy angles, the impact of micromotion thresholds at the bone implant interface and hemodynamic changes on the bone healing microenvironment after internal fixation device implantation, significantly reducing complications caused by improper operation and improving the surgical success rate.

The application relates to the technical field of medical instrument processing, in particular to a grinding simulation method, which comprises the following steps: generating a three-dimensional bone model and a three-dimensional grinding instrument model; based on action information of the grinding instrument fed back by a sensor, updating the coordinate position change of the three-dimensional grinding instrument model in a virtual scene in real time; based on the position information of the three-dimensional grinding instrument model obtained after the updating and the data point information of the three-dimensional bone model, obtaining the position relationship between the three-dimensional grinding instrument model and each data point; based on the position relationship between the three-dimensional grinding instrument model and each data point, correcting the target position of each data point; based on the different states of the data points, correcting the state of each triangular facet of the three-dimensional bone model; processing all the data points, filling the triangular facets, and obtaining the updated three-dimensional bone model. The method provided by the application improves the updating efficiency of the grinding simulation and guarantees the real-time performance of the grinding simulation.

Disclosed are a method for creating a surgical training model, a surgical training model apparatus, a bone model, an article that emulates tissue of an animal musculoskeletal system, an article that emulates animal fat tissue, and an article that emulates animal skin tissue. One version of the method comprises placing a spinal vertebrae model in a cavity model that emulates an animal body cavity; forming a first layer on top of the vertebrae model, wherein the first layer emulates an animal muscle tissue; placing a second layer over the first layer, wherein the second layer emulates an animal fat tissue; and placing a third layer over the second layer, wherein the third layer emulates an animal skin tissue. The spinal vertebrae model can be 3D printed from a thermoplastic polymer and infiltrated with a foam into an interior space of the 3D printed spinal vertebrae model.

The invention discloses a three-dimensional figure real-time projection system and method based on cooperative processing of a smart watch and a cloud server, millimeter-level motion capture is realized through multi-sensor fusion (9-axis IMU + RGB + ToF), and single-frame rendering time is less than or equal to 5ms in combination with 5G / Wi-Fi 6E dual-channel redundant transmission (switching delay is less than or equal to 2ms) and a cloud GPU cluster (NVIDIA DGX A100 + RTX 6000 Ada). The system adopts a three-level network fault-tolerant mechanism (a 32MB skeleton model is locally stored), and the basic three-dimensional projection function can still be maintained when the packet loss rate is greater than or equal to 5%. Compared with the prior art, according to the scheme, the end-to-end delay is reduced by 57.1%, the terminal power consumption is reduced by 33.1%, and the method is suitable for high-real-time scenes such as AR / VR interaction and remote cooperation.

A design method of an anatomical plate for treating a tibial plateau fracture and an internal fixation device are provided. The design method includes: obtaining a high-precision three-dimensional model of a fractured bone of a patient; obtaining a post-reduction bone model; extracting point arrays of a cross section and a sagittal plane and obtaining solid body designs of a lateral plate body and a medial plate body; and adjusting thicknesses of proximal ends of the lateral plate body and the medial plate body, adjusting thicknesses of main bodies of the lateral plate body and the medial plate body, cutting the lateral plate body and the medial plate body from a sagittal plane according to a fit condition of the lateral plate body and the medial plate body, and determining a position and a direction of a screw hole to obtain a lateral anatomical plate and a medial anatomical plate.

A method includes providing a bone model and a surgical plan defining a planned implant pose to the bone model, providing, based on the planned implant pose, a planned resection volume and a cut-away object, generating a visualization for surgical navigation by, subtracting, from the bone model, a region of intersection between the bone model and the cut-away object and including a visualization of the planned resection volume, and dynamically updating the visualization of the planned resection volume to show progress in completing a resection by tracking movement of a surgical instrument completing the resection.

The disclosed embodiments provide an animation display method, apparatus, device, medium, and product. The method may include: determining the human body posture data corresponding to the action image generated by the user performing the target action; based on the skeletal coordinate system of the standard skeletal model, converting the human body posture data into human body rotation data corresponding to the standard skeletal model; according to the skeletal mapping relationship between the animation skeletal model of the animation to be displayed and the standard skeletal model, converting the default posture data of the animation skeletal model into skeletal rotation data relative to the standard skeletal model; and according to the human body rotation data and the skeletal rotation data, controlling the animation to be displayed to be rendered and displayed according to the target action. This solves the problem that the application scope of animation control is not high.

A system and method for planning and assisting orthopedic surgical procedures includes a computing device and a robotic surgical device. The computing device defines a surgical coordinate system relative to a patient's bone and captures a plurality of point locations within the surgical coordinate system. The plurality of point locations includes a first point location representing a location on a soft tissue surface overlying a portion of the patient's bone. The computing device identifies an estimated soft tissue thickness value for each of the plurality of point locations and registers a three-dimensional model of the patient's bone within the surgical coordinate system based on the plurality of point locations and the estimated soft tissue thickness value. The computer system can control the robotic surgical device according to the registered bone model.