191 results about "Surgical simulation" patented technology

A three-dimensional surgery simulation system is provided for generating a three-dimensional surgery simulation result of an anatomical part undergoing a simulated surgical procedure. The system includes a display unit, a three-dimensional visual imaging unit, a storage unit for storing a plurality of voxelized three-dimensional model image data sets, an input unit for controlling progress of the simulated surgical procedure, and a computing unit for computing the simulation result data in accordance with the voxelized three-dimensional model image data sets and under the control of the input unit, and for controlling the display unit to permit viewing of the surgery simulation result in three-dimensional form thereon by an operator wearing the visual imaging unit.

A training and / or evaluating device is provided particularly useful in performing laparoscopic procedures, radiological procedures, and precise surgeries that simulates the structure and dynamic motion of the corresponding anatomical structure on which the procedure takes place. The device includes an outer housing, which may be designed to mimic the body wall, in which one or more organs are located. Motion of the organ(s), as a result of respiration, pulmonary action, circulation, digestion and other factors present in a live body, is simulated in the device so as to provide accurate dynamic motion of the organs during a procedure.

Systems and methods are provided through which a model-based vision system for dentistry which assists in diagnosis, treatment planning and surgical simulation. The present invention includes an integrated computer vision system that constructs a three-dimensional (3-D) model of the patient's dental occlusion using an intra-oral video camera. A modified shape from shading technique, using perspective projection and camera calibration, extracts the 3-D information from a sequence of two-dimensional images of the jaw. Data fusion of range data and 3-D registration techniques develop a complete 3-D digital jaw model. Triangulation of the 3-D digital model is then performed, and optionally, a solid 3-D model is reconstructed.

A surgical simulation device includes a support structure and animal tissue carried in a tray. A simulated human skeleton is carried by the support structure above the animal tissue and includes simulated human skin. A camera images the animal tissue and an image processor receives images of markers positioned on the ribs and animal tissue and forms a three-dimensional wireframe image. An operating table is adjacent a local robotic surgery station as part of a robotic surgery station and includes at least one patient support configured to support the patient during robotic surgery. At least one patient force / torque sensor is coupled to the at least one patient support and configured to sense at least one of force and torque experienced by the patient during robotic surgery.

An apparatus for simulating an image-guided procedure. The system comprises an input for receiving a three-dimensional (3D) medical image depicting an organ of a patient, a model generation unit for generating a 3D anatomical model of the organ according to the 3D medical image, and a simulating unit for simulating a planned image-guided procedure on the patient, according to the 3D anatomical model.

A surgical simulation device includes a support structure and animal tissue carried in a tray. A simulated human skeleton is carried by the support structure above the animal tissue and includes simulated human skin. A camera images the animal tissue and an image processor receives images of markers positioned on the ribs and animal tissue and forms a three-dimensional wireframe image. An operating table is adjacent a local robotic surgery station as part of a robotic surgery station and includes at least one patient support configured to support the patient during robotic surgery. At least one patient force / torque sensor is coupled to the at least one patient support and configured to sense at least one of force and torque experienced by the patient during robotic surgery.

The invention discloses a hepatic tumor comprehensive surgical planning analogy method and a system thereof based on three-dimensional multimode images. The method comprises the steps that firstly, a data base containing the data of an object is constructed; secondly, three-dimensional registration and fusion are conducted on the medical images, having different modes or single mode and different periods, of the object; thirdly, a specific tissue is divided by the automatic and semi-automatic modes, and the three-dimensional modeling of important tissues in and around the liver is realized by the three-dimensional reconstruction technology so as to reconstruct an abdominal three-dimensional model having the immersion and interaction features; fourthly, before-simulation comprehensive risk analysis is conducted based on the modeling result, referred to the practice guidelines and combined with the object information; and finally, all kinds of simulation surgical plans are designed according to the result of the comprehensive risk analysis, surgical simulation with strong sense of reality is conducted, a surgical route is planned, and risk and prognosis analysis is conducted on the planning simulation result. Through repeated surgical simulations, the surgical skills and the mastery of a user can be improved, and medical teaching can be conducted through the method and the system.

A device system and method for simulating laparoscopic procedures, particularly for the purposes of instruction and / or demonstration. The system comprises one or more virtual organs to be operated on. The organ comprises a plurality of elements, each element having neighboring elements; and a plurality of tensioned connections connecting neighboring elements over said organ, such that force applied at one of said elements propagates via respective neighboring elements provides a distributed reaction over said organ. In addition there is a physical manipulation device for manipulation by a user; and a tracking arrangement for tracking said physical manipulation device and translating motion of said physical manipulation device into application of forces onto said virtual organ. The system is capable of simulating organs moving, cutting, suturing, coagulations and other surgical and surgery-related operations.

A surgical simulation system is provided. The system includes at least one simulated body organ placed upon the base of an organ tray and at least one covering layer placed over the simulated body organ. At least one of the simulated body organ and covering layer includes electro-conductive gel that is operably severable under application of electrical current to simulate electrosurgery in a training environment. The training environment comprises a top cover connected to and spaced apart from a base to define an internal cavity that is partially obstructed from direct observation by a practitioner. The tray, simulated body organs and covering layer are placed inside the internal cavity for the practice of laparoscopic surgical procedures.

The invention is related to a kit for use in a surgical simulation system which comprises an operating element adapted for insertion of haptic devices and or surgical instruments / devices, at least one haptic device, at least one motion tracking sensor(s) connected to the haptic device(s), and signal transmission means for transmitting sensor signals to the simulation system. The invention further regards an operating element and a haptic device for use in a surgical simulation system.

The invention provides an endoscopic minimally invasive surgery simulation training method which comprises the following steps of: (1) constructing and editing an endoscopic minimally invasive surgery medical model; (2) constructing a system foundation component library by using a fundamental algorithm; (3) constructing a core algorithm by using the system foundation component library to realize the core function of a 3D platform system; (4) constructing a medical model description language; (5) calling the medical model, constructing a medical scene, and simulating various actions of an endoscopic minimally invasive surgery; and (6) simulating various operations by using endoscopic minimally invasive surgery instruments in a driving virtual environment of an operating table, and outputting a feedback force through an operating rod of a data receiving and feedback signal processing driving operating platform to realize force feedback and virtual touch, so that the simulation training is more vivid. Meanwhile, the invention provides an endoscopic minimally invasive surgery simulation training system. By using the method and the system, force feedback and virtual touch effects can be provided, and high fidelity and a good simulation training effect can be achieved.

The invention provides a method for constructing a surgical virtual operation teaching and training system. The method comprises the following concrete steps: (1) acquiring various inspection data classified according to normal people and patients, intensively storing the acquired data, and constructing an integrated male virtual human model and an integrated female virtual human model; (2) carrying out geometric modeling, computational modeling and deformation computation on medical data, and carrying out modeling on bones and soft tissues by adopting a multi-outline three-dimensional reconstruction algorithm; (3) reconstructing by adopting a three-dimensional model of 3DMAX10, mapping and giving physiological characteristics to organic tissues; (4) compiling related objects and simulated scenes of a virtual operation by virtual reality modeling language (VRML); (5) carrying out preoperative preparation in the virtual operation scenes, and checking and confirming patient information; (6) carrying out complete operational details of the actual method of the virtual operation again; (7) establishing a simulated operation teaching evaluation system; and (8) carrying out comprehensive evaluation and examination on a teacher and each trainee. In the method, the simulated operation teaching system is constructed by utilizing the virtual reality technology, thereby providing a wide and transparent simulated teaching and research platform for hospitals and medical schools.

A microsurgery simulator simulates various microsurgical procedures (e.g., nerve reapproximation, ear drain deployment) that utilize a surgical microscope. A surrogate surgical microscope includes a mobile device and an eye piece. A physical surrogate surgical interface represents an interface between a user and a simulated surgical scenario. Sensors sense the user's manipulation of the surrogate surgical interface. A surgical simulation generator generates a real time 3D surgical simulation based on the sensed manipulation. The generator renders the real time surgical simulation into a real time computer graphics generated video representation that is displayed on a screen of the mobile device. A processor of the mobile device is configured to perform at least a portion of a computational analysis that is used to generate the real time computer graphics generated video representation.

The invention discloses a three-dimensional kidney neoplasm surgery simulation method and a platform based on a computed tomography (CT) film. The method includes that firstly, a data base including object resources is built, multiple manners including CT film scanning are inputted into a CT faultage image, a sequence image is registered according to the sequence based on an outline gradient principle, a registered CT image is utilized to reconstruct segmentation tissue of an arterial phase, a venous phase and a lag phase by adopting of a three-dimensional reconstruction technology, and the segmentation tissue of the arterial phase, the venous phase and the lag phase are effectively fused in the same coordinate space. According to an imaging staging criteria and a treatment guideline of kidney neoplasm, and based on modeling results, various peration plan designing, operation stimulation, surgical risk analysis and response, and prognostic analysis are carried out, a personalized and benefit maximization treatment plan can be provided for an object, and skills and degree of proficiency of an operation can be improved, and the three-dimensional kidney neoplasm surgery simulation method can be used in medical teaching.

A user interface device (1) comprising a frame (11) with a support (15) and a suspension portion (16) rotatable around a first axis (A). Further comprising a camera simulator (10) having a rigid shaft (21) with a primary extension along a longitudinal axis (C), being suspended by the suspension portion (16) so that it can translate along the longitudinal axis (C). A first rotational sensor (25) arranged to detect rotation of the suspension portion (16) around the first axis (A) by a guiding surface (18a) arranged at a distance from the first axis (A), and a first roller (30) arranged between the axis (A) and the guiding surface (18a) to rotate when the suspension portion (16) is rotated around the first axis (A) wherein the first rotational sensor (25) is arranged to detect rotation of the first roller (30). This solution enables satisfactory measured resolution at more reasonable price.

A device system and method for simulating laparoscopic procedures, particulary for the purposes of instruction and / or demonstration. The system comprises one or more virtual organs to be operated on. The organ comprises a plurality of elements, each element having neighboring elements; and a plurality of tensioned connections connecting neighboring elements over said organ, such that force applied at one of said elements propagates via respective neighboring elements provides a distributed reaction over said organ. In addition there is a physical manipulation device for manipulation by a user; and a tracking arrangement for king said physical manipulation device and translating motion of said physical manipulation device into application of form onto said virtual organ. The system is capable of simulating organs moving, cutting, suturing, coagulations and other surgical and surgery-related operations.

A surgery simulator includes a physical surrogate surgical interface that represents an interface between a user and a simulated patient in a simulated surgical scenario that involves manipulation of both simulated hard and soft tissue. Sensor(s) sense the user's manipulation of the surrogate surgical interface. A surgical simulation generator generates a real time 3D surgical simulation of the surgical scenario based on the manipulation sensed by the sensor(s). The real time 3D surgical simulation comprises real time simulation state data. The surgical simulation generator renders the real time simulation state data into a real time computer graphics generated video representation of the surgical simulation and provides the real time video representation to a display for real time viewing by the user. The surgical simulation generator simulates effects of the manipulation on both simulated hard tissue and simulated soft tissue of the simulated patient.

The invention discloses an apparatus and a method for processing tumor image information processing based on digital virtual organ. The apparatus comprises: a body imaging device; image sequence processing device; body organ histomorphology images database; a device for extracting characteristics of healthy persons and patients and merging three dimensional reconstructed multi-model image data; body organization physiological and pathological database and embolism chemotherapy relevant operation simulation software. The method comprises: getting images sequence with organ internal channel information; processing the images sequence and creating virtual organs with organization structure information; extracting characteristics from human organ histomorphology images database and patients' organs image data, having three dimensional re-build multi-model image data merge, and establishing virtual organs.

An eye model system includes a socket housing having an interior cavity sized to receive an eye model, and an anterior opening communicating with the interior cavity. Engagement structure is provided for detachably engaging and securing the eye model in the interior cavity. A method for practicing medical procedures is also disclosed.

Embodiments of the present invention provide a system for simulating the endovascular intervention operation. The system comprises an image acquiring device, a model establishment device, a physical surgical instrument and a display. The image acquiring device is configured to acquire the medical image data of blood vessels, perivascular tissues and perivascular organs that are subjected to the simulation for the endovascular intervention operation, wherein the medical image data are specified for a patient. The model establishment device is configured to establish a three-dimensional geometric model of the blood vessels, the perivascular tissues and the perivascular organs in the medical image data. The physical surgical instrument is operated by a user to simulate the endovascular intervention operation. The model establishment device is also configured to control the motion trajectory of a three-dimensional model of the surgical instrument in the three-dimensional geometric model of the blood vessels according to the operation of the user on the physical surgical instrument. The display is configured to display the three-dimensional geometric model of the blood vessels, the perivascular tissues and the perivascular organs and the motion trajectory of the three-dimensional model of the surgical instrument in the three-dimensional geometric model of the blood vessels. According to the technical scheme of the invention, the operation plan of a patient can be formulated in the personalized manner. Meanwhile, the operation path is optimized and the operation can be rehearsed.

The invention relates to a computer aided viscera operation simulation system which comprises a medical database module (1) for storing the original medical image data of a human body, a medical image processing module (2) for generating a three-dimensional organ model from the original medical image data of the human body in the medical database module (1), and a simulating operation platform (3) for carrying out simulating operation to the three-dimensional organ model generated by the medical image processing module (2); wherein the medical database module (1) is connected with the simulating operation platform (3) through the medical image processing module (2). The invention provides the computer aided viscera operation simulation system which can perform three-dimensional model reconstruction according to the medical picture of a true patient and carry out operation simulation repeatedly.

The invention discloses a 3D kidney model printing method for kidney stone surgical simulation teaching. The printing method comprises the following steps: acquiring a high-density stone three-dimensional rebuilt model by utilizing MIMICS software by virtue of a scanning period of CTU, acquiring a three-dimensional rebuilt model of kidney skin and arteriovenous blood vessels by virtue of an arteriovenous enhanced period, acquiring a three-dimensional rebuilt model of pelvis and ureter by virtue of secretion enhanced period of pelvis, acquiring a kidney three-dimensional rebuilt model comprising kidney skin, kidney medulla, kidney artery and vein, pelvis and calices and ureter, and finally combining the three-dimensional rebuilt model of each part to obtain a complete kidney three-dimensional rebuilt model. By adopting the method, the problems that percutaneous nephrolithotomy is used as an effective and safe minimally-invasive surgery, to select an optimum puncture point is difficulty and a key point in the surgical operation, the formation of a three-dimensional image in the brain by virtue of a two-dimensional image needs long-term training and is prone to missing small dissection structures can be effectively solved.

The invention provides a remote surgical planning and navigating system. The remote surgical planning and navigating system comprises a medical image post-processing subsystem, a multi-mode image fusion subsystem, a medical image management subsystem, a surgical planning subsystem, a surgical navigation subsystem and a remote consultation subsystem, wherein the medical image post-processing subsystem is used for post-processing medical images; the multi-mode image fusion subsystem is used for fusing multi-mode images of a patient and carrying out three-dimensional reconstruction and visualization processing; the medical image management subsystem is used for storing and managing the medical images of the patient and establishing a personal file for the patient; the surgical planning subsystem is used for providing preoperative surgical simulations and plans; the surgical navigation subsystem is used for navigating a surgery; the remote consultation subsystem enables a surgical doctor and an imaging doctor to remotely cooperate and consult. According to the remote surgical planning and navigating system, data can be shared among different departments effectively, doctors in different departments can remotely communicate and cooperate, the problem of requirements for re-acquisition of scanned images which do not meet diagnosis requirements of the doctors is further effectively solved, and the efficiency and the success rate of the surgery are effectively improved.

A surgical simulation assembly is provided for simulating realistic surgery on animal organs or human cadavers. The surgical simulation assembly comprises a generally flat tray having a central indentation for receiving an organ, at least one drainage aperture and at least one indented trough extending from the central indentation for receiving at least one tube. The tray is assembled with a simulator heart and lungs prepped for connection to a variable speed double action air pump assembly that creates both positive pressure and a vacuum on the heart to simulate a beating heart. The tray is supported on a basket having a lower containment portion for containing fluid waste collected during the simulated surgery. The basket is elevated by risers over a base designed to support the assembly.

A method is provided for generating real-time haptic response information for a haptic simulating device during a surgery simulation performed by a virtual tool on an object volume that includes tissue voxels, null voxels, and object boundary points. The method includes: (a) receiving a select input of a selected virtual tool type; (b) obtaining tool boundary points of the virtual tool; (c) obtaining a current reference position of the virtual tool; (d) determining a current tool subvolume; and (e) when the current tool subvolume has at least one tissue voxel, (e-1) determining positions of the tool boundary points within the subvolume, (e-2) updating labels of the voxels within the subvolume and replacing an original set of the object boundary points within the subvolume with a new set of the object boundary points, (e-3) determining force-contributing ones of the tool boundary points, and (e-4) providing force information of a force to be generated by the haptic simulating device.

The invention provides a recording and playback method and a device of a virtual surgical simulation process. The method comprises the steps: event pre-classification: obtaining a plurality of operation signals in different surgery types, abstracting each operation signal into a response event, mapping the response events into an integer set comprising a plurality of integer identifications, and corresponding the response events to the integer identifications one to one; recording: storing an initial scene state, sequentially obtaining the operation signals of the current surgery type, inquiring and storing the integer identifications corresponding to the operation signals of the current surgery type respectively according to the obtained operation signals at the same time, and generating a recording segment according to the stored integer identifications and the initial scene state; and playback: obtaining the initial scene state, sequentially obtaining the integer identification in the recording segment according to a storage sequence, and responding and rendering according to the obtained integer identifications and the initial scene state at the same time to generate and display a new scene state.

The invention discloses a virtual operation simulation training system for preoperative training and a training method thereof. The system comprises a main node and multiple sub nodes in synchronous communication connection with the main node. Each of the main node and the sub nodes comprises a haptic interaction device, a soft tissue cutting simulation module and a realistic real-time rendering module. Through an operation process for a virtual operation trained on the main node recorded by the main haptic interaction device, the main soft tissue cutting simulation module and the main realistic real-time rendering module, the operation of a physician is mapped to each sub node in a real time mode, and the trained physician can sense the operation process via the sub haptic interaction device on the sub node. A model differential encoding algorithm is adopted, and each sub node can quickly obtain a three-dimensional operation model. A high-difficulty operation can be prevented from being trained on a patient, a learning curve and a training cost of the trained physician are shortened, and popularization and improvement of the soft tissue cutting operation technology are promoted.

The present invention relates to an adjustable dental implant bar system. There is provided a dental implant bar which can be adjusted and which may have articulated and telescopic anus and which can be further secured to implant heads already installed in the patient's mouth or alternatively on a manufactured model made with computerized surgical simulation software or using a conventional dental printing system with transfers.