144 results about "Organ Model" patented technology

A material for forming an organ model containing an aqueous gel, which comprises polyvinyl alcohol having an average degree of polymerization of 300 to 3500 and a degree of saponification of not less than 90% by mole, and silica particles; a method for producing a material for forming an organ model, comprising cooling an aqueous polyvinyl alcohol solution which contains polyvinyl alcohol having an average degree of polymerization of 300 to 3500 and a degree of saponification of not less than 90% by mole and silica particles, to a temperature of −10° C. or lower, and thawing the resulting formed aqueous gel; and an organ model at least provided with a surface layer comprising the material for forming an organ model. Thus, it is possible to provide: an organ model which has a hydrophilic property similar to an organ of a human body, gives such an incision feel that an incised portion spreads just similar to a living human organ and, therefore can be appropriately used in, for example, exercising surgical procedures; a material for forming an organ model appropriately usable for the organ model; and a method for producing the same.

A method of operating a surgical navigation system is disclosed in which a user may easily recognize a depth perception between virtual organ models and a depth relationship between the virtual organ model and a surgical instrument by switching a two-dimensional organ image which is formed through an augmented reality to a virtual organ mode by three-dimensionally rendering the organ image. A method of operating a surgical navigation system comprises identifying an object from a body image captured by a camera, forming the object in a two-dimensional organ image by using an augmented reality, and forming a virtual organ model by three-dimensionally rendering the organ image.

A method that includes receiving an input image of a region of interest (ROI) of an individual. The input image is a medical image acquired by a first imaging modality. The method also includes generating a first feature image based on the input image. The first feature image includes a designated anatomical feature of the ROI. The method also includes obtaining an anatomical atlas. The atlas has a reference image of the ROI of at least one other individual and an organ model. The reference image is a medical image that is acquired by a second imaging modality that is different from the first imaging modality. The method also includes determining a transformation function by registering the first feature image with a second feature image that is based on the reference image and includes the designated anatomical feature.

A puncture planning apparatus has: a simulation unit that simulates movement of an organ and a puncture needle by simulation using an organ model; and a planning unit that plans, based on the simulation result, how to move the puncture needle when an actual organ is punctured. The simulation unit executes a plurality of times of the simulation of an operation to advance the puncture needle while correcting an angle of the puncture needle so as to follow the movement of the target segment due to deformation of the organ, conditions of an advancement speed of the puncture needle are changed for each of the plurality times of the simulation, and the planning unit performs planning using the best simulation result out of the plurality of simulation results acquired under different conditions of the advancement speed.

The invention discloses a human anatomy teaching system, and the system comprises a human organ model database, a human body model database, an operation tool model database, a three-dimensional simulation generation module, a virtual actuator, a virtual sensor, a simulation analysis module, a man-machine operation module, a central processor, and a transfer node module. The system simulates various types of human body models, human organs and operation tools through the three-dimensional simulation generation module, then carries out the simulation demonstration of an anatomy process according to a control command inputted by the man-machine operation module, enables students to be personally on the scene, and greatly improves the learning efficiency. Moreover, each database is provided with an updating module, thereby meeting the simulation of various types of model data, and greatly reducing the cost. Meanwhile, the system can achieve the teaching of an anatomy method in the whole anatomy process through various types of preset algorithms or methods, alleviates the workload of a teacher, employs a plurality of control command input modes, and further facilitates the teaching.

The invention discloses a lung cancer organ model and an application thereof in tumor research. An establishment method of the lung cancer organ model comprises the steps as follows: (1) lung cancer tumor cells are added to a three-dimensional culture medium for culture, and the lung cancer tumor cells are added to a culture medium to be continuously cultured after a tumor layer is formed, whereinthe culture medium contains growth factors and extracellular matrix suitable for growth lung cancer tumor cells; (2) a system obtained through culture in step (1) forms single cell after protease enzymolysis, resuspension is performed by the culture medium after separation, and then, the lung cancer organ model is obtained. By use of the method, a specimen library containing a large number of lung cancer organ models can be established, heterogeneity and diversity of lung cancer are greatly covered, the defect of insufficient representativeness of traditional lung cancer cell lines is effectively overcome, and the lung cancer organ model becomes an efficient platform for research of occurrence and development mechanisms of lung cancer.

The invention relates to the technical field of printing and particularly relates to a three-dimensional organ model and a printing method, device and equipment of the three-dimensional organ model. The printing method of the three-dimensional organ model comprises the steps that image data are obtained; three-dimensional modeling is carried out based on the image data to obtain a three-dimensional model, wherein the three-dimensional model comprises at least one of a tissue organ part, a blood vessel part and a lesion part; the tissue organ part and/or the blood vessel part are/is divided into a plurality of sections; different printing attributes are defined for the three-dimensional model to make at least one attribute mutation area exist between any adjacent sections; and printing is carried out to obtain the three-dimensional organ model. By means of the three-dimensional organ model, the printing method, device and equipment of the three-dimensional organ model, all the sectionscan be visually and accurately distinguished, an operation path can be better planned, operation risks can be better reduced, and the purpose of precise medical treatment can be achieved.

The invention discloses a facial feature point positioning method and device, and belongs to the technical field of image processing. The method includes the steps of obtaining an image to be detected, conducting initial positioning on an average shape model in the image to be detected so as to obtain initial positions of feature points for describing the organs of a face in the image to be detected, determining the types of organ models for describing the set organs of the face, conducting feature point search on the image to be detected on the basis of the organ models of the determined types, and regulating the initial positions of the feature points of the organs of the face in the image to be detected. According to the facial feature point positioning method and device, for different types of the set organs of the face in the image to be detected, the initial positions of the feature points of the organs of the face in the image to be detected are regulated on the basis of the organ shape models of different types, similarity between the feature points of the face and the image to be detected is improved, and errors between the face shape formed by the feature points of the face in the obtained image to be detected and the face shape in the image to be detected are reduced.

The invention discloses an in-vitro construction method of a liver cancer organ model. Liver cancer cells, hepatic stellate cells and liver sinusoidal endothelial cells are suspended in a culture medium A in a specific proportion; on the fourth day of culture, half of culture liquid is replaced, and culture is maintained; from the seventh day, the culture medium A is replaced with a culture mediumB, and then culture is continuously conducted for seven days; amplification subculture is conducted on the fourteenth day. On the basis of complex cellularity in a tumor microenvironment, the 3D liver cancer organ in-vitro model which is uniform in size, stable in structure, capable of being used for detecting the effectiveness of anticancer drugs and capable of achieving multiplication culture is quickly constructed. The constructed liver cancer organ model is simple in method, quick to construct, high in operability and suitable for researching a liver cancer generation and development mechanism, high-throughput screening of liver cancer drugs and the like, and has industrialization significance.

The invention relates to a nidus and/or organ modeling method and apparatus used for model body making. The nidus and/or organ modeling method used for model body making comprises the steps of performing three-dimensional simulation modeling of a nidus and/or an organ to generate a first modeling file of the nidus and/or the organ; performing medical image-based three-dimensional modeling of the nidus and/or the organ to generate a second modeling file of the nidus and/or the organ; and performing image registration and fusion on the first modeling file and the second modeling file to generate a third modeling file of the nidus and/or the organ. According to the method and the apparatus, nidus and/or organ modeling for model body making is realized through the registration and fusion of the three-dimensional simulation modeling and the medical image-based three-dimensional modeling.

The invention discloses a rapid construction method and system for human organ-intracavity three-dimensional geometry model, which is suitable for the rapid construction of complex cavities. The technical proposal is that: (1) one or more sensing elements are introduced into the intracavity; (2) in the intracavity the sensing elements are moved to collect the spatial location information of the intracavity to know the position or range of the intracavity; (3) according to the position or range of the intracavity, the intracavity surface three-dimensional geometry model is constructed. The rapid construction method and system for human organ-intracavity three-dimensional geometry model are applied in the field of organ model construction.

The invention relates to a tumor grid organ model 3D printing method. The method particularly comprises the following steps: a cross section and a sagittal section when a human body is in a supine position are used for building crossed multiple grids on the surface of an organ, while the 3D grids are built, 3D modeling software specially adopted for original data for medical imaging (CT or MRI) picks out an organ or a tumor or a blood vessel in need of 3D printing, and building of 3D data is carried out. 3D data for the organ or the tumor or the blood vessel are built at the same time, and organ surface 3D grid data are built. The 3D data are inputted to a 3D printer for 3D model printing. According to the printed model of the invention, the tumor can be intuitively observed via a hollow organ shell and the distance between the tumor and the organ surface can be measured, a guide is provided for surgical resection, and a spatial distance between the tumor or the blood vessel inside the organ and an anatomical site on the organ surface can be directly read from the model.

The invention belongs to the technical field of cardiothoracic surgery, and discloses a cardiothoracic surgery auxiliary control system and method based on virtual reality. The cardiothoracic surgeryauxiliary control system based on virtual reality comprises an action data acquisition module, an image shooting module, a main control module, an organ model building module, a virtual scene generating module, a navigation module, a data storage module and a virtual display module. According to the cardiothoracic surgery auxiliary control system and method based on virtual reality, a specific scene is automatically shot through the image shooting module, the artificial resources are saved, and the more accurate shooting effect can be ensured; meanwhile, three-dimensional re-building is conducted on a medical image through the navigation module to obtain a virtual model; the virtual model is fused with the body part of a patient by utilizing an augmented reality technology, so that the navigation effect on the medical surgery is achieved in the fused state, a doctor conveniently and accurately controls surgical instruments, the efficiency of the surgery is greatly improved, and the success rate of the surgery is greatly increased.

The invention embodiment provides an abdominal cavity minimally invasive surgery system and a needling time determination method; the method comprises the following steps: obtaining a static state section image of a focus internal organs model, and using an ultrasonic unit to capture the focus internal organs in the abdominal cavity in real time so as to form a dynamic ultrasonic image; fusing and rectifying the dynamic ultrasonic image with the static state section image of the focus internal organs model, thus determining the needling execution time of a planned puncture path, so the deviation of a puncture tool reaching a preset target can be limited in a preset scope. The system and method allow the tool to have the minimum deviation when reaching the preset target, thus further ensuring surgery safety and effectiveness, and reducing operational difficulty.

The invention discloses a 3D printing method for a medical model. The 3D printing method comprises the steps that A, three-dimensional model data are acquired, the model is imported into magics software through a STL file provided by a client so as to fix the positions of all parts of the model, and the output file with the STL format is then imported into 3DMAX software so as to modify and cut the model; B, according to the current situations of organs of the model, section lines are set along the maximum boundary of three-dimensional coordinates of all the organs after variation, and parts which are are sectioned and cut are exported to be STL files respectively; and C, the stored STL files are stored into Cura software, print files with the gcode format are output, and printing is started. The method has the advantages that the defects in the prior art can be overcome, and the precision of the 3D printed organ model can be improved.

The invention discloses an AR and endoscope combined surgical navigation method and terminal. The method includes receiving a two-dimensional organ image returned by an endoscope and identifying an organ type of the two-dimensional organ image by a two-dimensional image identification algorithm; acquiring a three-dimensional organ model of the organ type and generating and displaying an anatomicalmodel of the organ type according to the three-dimensional organ model. The three-dimensional virtual anatomical model is generated through a two-dimensional organ image. On one hand, a doctor can see a real image presented by the two-dimensional organ image; on the other hand, a virtual image formed by the anatomical model can be seen, that is, the virtual reality contrast technology is adopted,so that the doctor can have a more intuitive understanding of the surrounding conditions of the endoscope, and the effect of surgical navigation can be achieved.

The invention discloses a manufacturing process of a human organ model. The human organ model comprises a shell body and an internal structure arranged inside the housing, and is characterized by comprising a 3D printer and medical imaging equipment. The manufacturing process of the human organ model comprises the steps of: S1, image photographing; S2, model printing; S3, shell body processing; S4, model coloring; S5, shell body adhering; S6, silica gel perfusion; S7, and surface treatment. The manufacturing process has the advantages and beneficial effects that: the firmness and plumpness ofthe human organ model are ensured through printing the shell body and the internal structures separately, placing the internal structure into the shell body and then perfusing silica gel into the shell body; and distinction degrees of tissues of the internal structure in the human organ model are ensured through coloring the internal structure and then implanting the internal structure into the shell body, the usage of full-color soft plastics is avoided, thus the manufacturing cost of the human organ model is further reduced, thereby being conductive to large-scale promotion and application.