99 results about "Stereotaxis" patented technology

A computer assisted surgical system that includes an apparatus for imaging a region of interest of a portion of an anatomy of a subject; a memory containing executable instructions; and a processor programmed using the instructions to receive two or more two-dimensional images of the region of interest taken at different angles from the apparatus and process the two or more two-dimensional images to produce three dimensional information associated with the region of interest.

The invention discloses a stereotactic puncture path planning method based on reinforcement learning. The stereotactic puncture path planning method comprises the following steps: S1, constructing a risk weight map; s2, establishing a puncture constraint set; s3, performing global search on the frog group initial population by adopting a discrete frog leaping optimization algorithm to obtain an initial puncture path set with consistent constraints; s4, mapping the real-time navigation state vector template into a state set; s5, when Q value updating is executed, strategy smooth regularization is introduced, and state-action-award closed-loop iteration is completed; and S6, when the simulation navigation system judges that the puncture instrument reaches the target ventricle coordinate or the navigation state vector triggers the risk threshold early warning of the puncture constraint set, the final simulated refined puncture path is output to a surgical navigation interface. The probability of damaging a key structure in an operation is obviously reduced.

The invention discloses a method and system for decoding free association semantics through stereotactic electroencephalogram signals. The method comprises the steps that the free association stereotactic electroencephalogram signals generated when a user carries out free association on a target image are obtained; the method comprises the following steps: preprocessing free association stereotactic electroencephalogram signals, inputting the preprocessed free association stereotactic electroencephalogram signals into a feature extraction module and a classifier in a pre-trained free association electroencephalogram signal decoding network, and extracting electroencephalogram signal semantic features through the feature extraction module; the semantic features of the electroencephalogram signals are classified through a classifier to obtain the image category of the target image, and the free association electroencephalogram signal decoding network further comprises an auxiliary feature extraction module, a domain discriminator, a pre-training image feature extractor and a global adaptation module. The method aims at solving the problems that in existing research, free association brain signals are small in data size and high in prediction difficulty, and an existing deep learning model cannot be well suitable for semantic decoding of all-channel stereotactic electroencephalogram signals.

The invention discloses a gamma ray focused radiotherapy and MRI stereotactic all-in-one machine which comprises an MRI image mechanism, a treatment head mechanism and a treatment bed mechanism. The MRI image mechanism comprises a magnetizer and a magnetic pole, a mounting cavity is formed in the middle of the magnetizer, and the treatment head mechanism is arranged in the mounting cavity; the treatment bed mechanism is connected with the magnetizer and can rotate relative to the magnetizer, and movement of a treatment position can be achieved through rotation, so that treatment of different parts of the head is achieved, and after a human body is imaged, treatment can be conducted through a TPS treatment plan. The all-in-one machine is ingenious and reasonable in structural design and small in occupied area, real integration of an imaging mechanism and a radiotherapy mechanism is achieved, secondary fixation on a patient is eliminated through positioning and treatment integration, and the treatment efficiency and treatment precision are higher.

A stereotactic device for cutting hard tissue on the cranial bone using energetic radiation has a stereotactic frame (22) and a stereotactic bow (25) fastened to the stereotactic frame (22) by at least one rotary joint. A laser applicator (17) is attached to the stereotactic bow (25) and can be moved along the stereotactic bow (25) via a motorised drive (28´´), said bow also being able to be tilted on the stereotactic frame (22) via a motorised drive (28, 28´). The laser applicator (17) has a dynamic 2D beam deflection apparatus (11) for a processing laser beam (2), focusing optics (12) with an adjustable focal position and a measuring apparatus (6) or is connected thereto, by means of which the cutting depth and the remaining thickness of the cranial bone (15) in the kerf can be measured. The device permits a safe opening of the cranium which is vibration-free and silent for the patient.

The disclosure provides a method for enriching epileptiform discharges and predicting SOZ during epilepsy interictal period, including the following steps: obtaining stereotactic electroencephalogaphy signals of patient during the epilepsy interictal period; preprocessing the stereotactic electroencephalogaphy signals to obtain processed stereotactic electroencephalogaphy signals; dividing the processed stereotactic electroencephalogaphy signals into a training set and a test set, dividing the training set into a plurality of signal segments by using a sliding window, and performing a self-supervised reconstruction training on the signal segments based on a Transformer encoder model to obtain a trained Transformer encoder model; inputting the test set into the trained Transformer encoder model, obtaining reconstructed values of each of the signal segments, comparing the reconstructed values of each of the signal segments with values of the stereotactic electroencephalogaphy signals to obtain deviation values of each of the signal segments from the background signals.

The invention discloses a curative effect evaluation method and system for stereotactic radiotherapy of spinal tumor, and the method comprises the steps: carrying out the automatic segmentation of tumor tissues and surrounding healthy organs in a spinal tumor imaging image after the stereotactic radiotherapy, and enabling a segmented tumor region to serve as a target organ region; extracting target image omics features from the image of the target organ region, wherein the target image omics features comprise shape features, texture features, gray level statistic features and high-order features related to the curative effect evaluation result; and inputting the target image omics characteristics into the first curative effect evaluation model to obtain a curative effect evaluation prediction result. The multi-dimensional features such as the shape feature, the texture feature, the gray statistic feature and the high-order feature are extracted from the image of the target organ region, the curative effect is evaluated based on the multi-dimensional features, and the accuracy of curative effect evaluation is improved.

The invention discloses a neurosurgical operation scheme optimization method based on digital twinning and causal inference, belongs to the technical field of medical equipment and information processing, is suitable for radiofrequency thermocoagulation (RF-TC) treatment drug-refractory epilepsy (DRE) operation under the guidance of stereotactic electroencephalogram (SEEG), and comprises the following steps: constructing a patient specific calculation model (PSCM); integrating multi-modal data to establish a digital twinborn model covering anatomical geometry, organizational physical attributes, neurodynamics and radio frequency thermal coagulation multi-physics field coupling; an optimization scheme is generated based on a causal inference generative adversarial network (CI-GAN), the causal effect of candidate schemes is quantitatively evaluated through PSCM, and the curative effect and safety are optimized through adversarial training; fine adjustment of a doctor on an AI scheme is achieved through an interactive platform, a final scheme is determined by combining real-time feedback quantitative indexes of the PSCM, objective identification of an epileptic source area, precise prediction of lesion and man-machine collaborative optimization are achieved, and scientificity and feasibility of an operation scheme are improved.

The invention discloses a stereotactic radiotherapy plan evaluation method, device and equipment and a storage medium, and relates to the technical field of radiotherapy plan evaluation, and the method comprises the steps: obtaining the file data of a stereotactic radiotherapy plan; according to the file data, determining the division times and the division dose of the stereotactic radiotherapy plan; calculating according to the segmented dose to obtain dose basic parameters, target region parameters and organ-at-risk parameters of each time of division; and determining an evaluation result of the stereotactic radiotherapy plan according to the dose basic parameters, the target region parameters and the organ-at-risk parameters. Through full-automatic auxiliary structure generation, data extraction and dosimetry index calculation, evaluation of key parameters such as target area coverage and organ-endangering protection can be rapidly completed, manual intervention and personal errors are greatly reduced, and evaluation efficiency is remarkably improved.

The application provides a Chinese spoken language intention recognition brain-computer interface system based on a sound-meaning integration double model, belongs to the technical field of biomedical engineering, and relates to language brain-computer interface technology. Taking sound-meaning integration as the core, the stereotactic intracranial electroencephalogram (sEEG) technology is adopted to collect neural signals of the brain articulatory motor coding area and the semantic concept organization coding area. The system comprises a voice initiation decoder, a speech decoder, a semantic decoder and a Chinese word speech-semantic fusion synthesizer, the target decoder is constructed by extracting high gamma band features of key brain areas of the frontal lobe (left inferior frontal gyrus, premotor cortex, etc.), the temporal lobe (anterior temporal lobe, dorsolateral temporal lobe, etc.). At the same time, a visual and auditory induction training paradigm is matched, three tasks of listening to sound to group words, looking at words to group words and word association are set, and the subjects are supported to generate words independently. The system effectively solves the homonym and near homonym word ambiguity problem in Chinese spoken language recognition, and provides a precise interactive tool for ALS and other speech disorder patients.

The utility model relates to the technical field of medical appliances, and discloses an auxiliary fixing base for installing a head frame of a brain stereotactic apparatus, which comprises a base body, and a fixing groove for clamping and fixing the head frame of the brain stereotactic apparatus and a headrest part for supporting the head of a patient are arranged on the top surface of the base body. The utility model provides an auxiliary fixing base for installing a head frame of a brain stereotactic instrument, which comprises a base body, a fixing groove which is arranged on the top surface of the base body and can be used for clamping and fixing the head frame of the brain stereotactic instrument, and a headrest part which is used for supporting the head of a patient, therefore, the problem that the head frame is deflected to influence the operation effect due to shaking when the head frame of the brain stereotactic instrument is installed can be fundamentally solved, absolute stability and safety in the operation process are ensured, more comfortable treatment experience is brought to a patient, and the success rate and the treatment effect of the operation are remarkably improved.

A method of treating a tumor in a subject, the method comprises applying a tumor treating field to the tumor at a frequency between approximately 50 kHz and approximately 1,000 kHz; and delivering personalized ultra-fractionated adaptive radiotherapy (PULSAR) regimen.

The invention provides a Chinese spoken language intention recognition brain-computer interface system based on pronunciation-meaning integration double models, belongs to the technical field of biomedical engineering, and relates to a language brain-computer interface technology. Sound-sense integration is taken as a core, and a stereotactic intracranial electroencephalogram (sEEG) technology is adopted to acquire neural signals of a brain phonetic motion coding region and a semantic concept organization coding region. The system comprises a sound production starting decoder, a voice decoder, a semantic decoder and a Chinese word voice-semantic fusion synthesizer, and a target decoder is constructed by extracting high gamma wave band characteristics of key brain regions of frontal lobe (left subfrontal gyrus, anterior cortex of motion and the like) and temporal lobe (anterior temporal lobe, dorsal lateral temporal lobe and the like). Meanwhile, an audio-visual induction training normal form is matched, three tasks of listening word combination, character reading word combination and vocabulary association are set, and subjects are supported to autonomously generate vocabularies. The system effectively solves the problem of ambiguity of homophonous and near-phonetic words in spoken Chinese recognition, and provides an accurate interaction tool for speech disorder patients such as ALS and the like.

The present disclosure relates to a method for suggesting personalized and symptom-specific DBS stimulation parameters, comprising the steps of: creating a three-dimensional symptom network library comprising a data-driven three-dimensional model of symptom-specific nerve tracts in a stereotactic space established based on a detailed and comprehensive pathway profile; registering patient data with the three-dimensional symptom network library to analyze how an electrode of a single patient is mapped thereto; stimulation parameters are derived and suggested from baseline symptom severity characteristics for each patient. Another object of the invention relates to a system for predicting DBS parameters, the system comprising an interface for providing DBS parameters to an electrode and receiving signals from a patient, and a computer programmable unit comprising a data memory for storing a network library of three-dimensional symptoms, the three-dimensional symptom network library includes a stored data driven three-dimensional model of symptom-specific nerve tracts in a stereotactic space established based on detailed and comprehensive pathways for predicting DBS parameters.

A method of treating a tumor in a subject, the method comprising applying a tumor treatment electric field to the tumor at a frequency of from about 50 kHz to about 1,000 kHz; and delivering a personalized hyper-segmented adaptive radiation therapy (PULSAR) protocol.

A lumbar facetectomy guide includes a trajectory drill guide, a transforaminal rectangular cannula, and a stereotactic block, the stereotactic block including a first channel for receipt of the trajectory drill guide and a second channel for receipt of the transforaminal rectangular cannula.

1. Name of the design product: Graphical user interface for visualized operation guidance of an electronic device. 2. Use of the design product: For an electronic device. 3. Design features of the design product: The graphical user interface displayed on the electronic device. 4. Picture or photograph best illustrating the design features: Design 1 front view. 5. Use of the graphical user interface: The graphical user interface is used for visualized guidance of the operation of a stereoscopic or ultrasound guided vacuum assisted biopsy device. The graphical user interface of design 1 is used to guide the installation of a biopsy system, wherein the front view guides the attachment of one of three casings of a biopsy device to a control module of the biopsy system, once the casing is attached to the control module, the front view jumps to interface change state figure 1; interface change state figure 1 guides the coupling of a probe of the biopsy device to the casing, once the probe is coupled to the casing, interface change state figure 1 jumps to interface change state figure 2; interface change state figure 2 guides the coupling of a vacuum control component of the probe to the control module, once the button in the lower part of interface change state figure 2 is clicked, interface change state figure 2 jumps to interface change state figure 3; interface change state figure 3 guides the user to select the preferred control side for the casing, once one of the two arrows of interface change state figure 3 is clicked, interface change state figure 3 jumps to interface change state figure 4; interface change state figure 4 prompts the user to start the biopsy device if desired or to skip the start, once the biopsy device is started or the button in the lower part of interface change state figure 4 is clicked, interface change state figure 4 jumps to interface change state figure 5; interface change state figure 5 prompts the user that the biopsy process can be continued when ready. The graphical user interface of design 2 is used to guide the installation of a biopsy system, wherein the front view guides the attachment of one of three casings of a biopsy device to a control module of the biopsy system, once the casing is attached to the control module, the front view jumps to interface change state figure 1; interface change state figure 1 guides the coupling of a probe of the biopsy device to the casing, once the probe is coupled to the casing, interface change state figure 1 jumps to interface change state figure 2; interface change state figure 2 guides the coupling of a vacuum control component of the probe to the control module, once the button in the lower part of interface change state figure 2 is clicked, interface change state figure 2 jumps to interface change state figure 3; interface change state figure 3 guides the user to select the preferred control side for the casing, once one of the two arrows of interface change state figure 3 is clicked, interface change state figure 3 jumps to interface change state figure 4; interface change state figure 4 prompts the user to start the biopsy device if desired or to skip the start, once the biopsy device is started or the button in the lower part of interface change state figure 4 is clicked, interface change state figure 4 jumps to interface change state figure 5; interface change state figure 5 prompts the user that the biopsy process can be continued when ready. 6. Other remarks: Design 2 claims color.

A system according to at least one embodiment of the present disclosure includes: a processor; and a memory on which data is stored, the data, when processed by the processor, enabling the processor to: receive a plurality of images captured with an imaging device; identifying a first component of the surgical device depicted in the plurality of images; registering the surgical device and the imaging device based on the first component; receiving information associated with a viewing position, where the imaging device is aligned with a second component of the surgical device when in the viewing position; and determining a movement of the imaging device for positioning the imaging device at the viewing position based on a combination of the viewing position and the registration.

An MRI head coil adaptor for a stereotactic frame can include a first part comprising an attachment portion configured for attachment to at least one of a stereotactic frame or a head fixation pin for a stereotactic frame. The adaptor can also include a second part coupled to the first part. The second part can be height-adjustable relative to the attachment portion. The height-adjustability may be achieved through a threaded arrangement between the first and second parts.

The present disclosure provides devices, systems, and methods for precisely positioning a human head in space. According to the invention, accurate positioning of the head of the human body in the space is realized through drawing lines generated by computer facial recognition software and a mode of positioning the sensor to the head of the human body according to the permanent recognition mark of the sensor. For a patient, surgical operations, radiation imaging or imaging diagnosis procedures on the brain, intracranial or carotid-cranial structure are dangerous because the brain tissue of the human body is very sensitive, it is very difficult to identify and enter a specific position in the brain where an operation needs to be performed, and the brain tissue around the specific position where the operation needs to be performed may be damaged. This desire to accurately position and enter the brain leads to the development of stereotactic neurosurgical specialized procedures or "stereotactic procedures".

The invention discloses a three-dimensional guide pipe shaping device and a shaping method thereof.The two end faces of a three-dimensional shaping device body are provided with a heating groove, a plurality of cooling grooves and a shaping groove located in the center, the heating groove and the cooling grooves are axially arranged in a penetrating mode, the cooling grooves are located on the radial outer side of the heating groove, and the cooling grooves and the heating groove are formed in the circumferential direction at intervals; a condenser or a blowpipe is mounted in the cooling tank; a plurality of screw holes used for loading adjusting rods are formed in the side wall of the three-dimensional molding device body, the screw holes penetrate through the heating groove and the cooling groove and directly abut against the molding groove, multiple layers of screw holes are formed in the side wall in the axial direction, a plurality of adjusting rods are arranged in each layer of screw holes in the circumferential direction at intervals and matched with the screw holes in a one-to-one mode, and the adjusting rods are symmetrically distributed on the side wall in pairs. In the molding process, the molding angle of the catheter can be adjusted in real time, the problems that an existing catheter molding mold cannot be adjusted again once the mold is determined and only planar shaping can be conducted in the prior art are solved, the catheter can be better matched with a human body cavity, and the catheter can reach an operation area more easily and rapidly.

A system includes a controller configured to receive three dimensional (3D) imaging input and feedback and generate output, the 3D imaging input including real-time or pre-processed data of a magnetic resonance imaging (MRI) / computerized tomography (CT) scan, the controller interfacing with a stereotactic robot.

The invention relates to the technical field of neurosurgery simulation training equipment, in particular to a minimally invasive intracranial hematoma removing surgery simulation training device which comprises a round ruler, a hematoma removing device, a mounting frame and a self-locking rotating part, a fitting plate is movably arranged on the inner side of a mounting plate, and a main air bag making contact with the fitting plate is arranged on the inner side of the mounting plate; according to the minimally invasive intracranial hematoma removal operation simulation training device, the main air bag and the side air bags are arranged on the inner side of the mounting plate and matched with the pneumatic control mechanism, the main air bag and the side air bags are arranged on the outer surface of the inner side of the mounting plate, and the side air bags are arranged on the outer surface of the inner side of the mounting plate and movably arranged on the side edges of the attaching plate. The self-adaptive flexible fitting of the simulated skull model and the stereotactic positioning assembly can be realized, the main air bag and the side air bag are cooperatively expanded, the size deviation, the assembly clearance and the operation stress of the model can be compensated, the fitting plate is tightly attached to the surface of the model, and the training deviation caused by poor fitting is avoided.

The present invention discloses a method and system for decoding free - associative semantics using stereotactic electroencephalogram signals. The method of the present invention includes obtaining free - associative stereotactic electroencephalogram signals when a user makes free associations to a target image; pre - processing the free - associative stereotactic electroencephalogram signals and then inputting them into a feature extraction module and a classifier in a pre - trained free - associative electroencephalogram signal decoding network, extracting electroencephalogram signal semantic features through the feature extraction module, and classifying the electroencephalogram signal semantic features through the classifier to obtain the image category of the target image. The free - associative electroencephalogram signal decoding network also includes an auxiliary feature extraction module, a domain discriminator, a pre - trained image feature extractor, and a global adaptation module. The present invention aims to solve the problems in existing research, such as the small amount of free - associative brain signal data, the high prediction difficulty, and the fact that existing deep - learning models cannot be well applied to the semantic decoding of full - channel stereotactic electroencephalogram signals.

The invention discloses a device for stereotactic radiotherapy of pulmonary arterial hypertension, which belongs to the field of stereotactic radiotherapy equipment and comprises a data acquisition device, an image processing device, an image processing device, an image processing device and a display device, and is characterized in that the data acquisition device is used for acquiring a pulmonary artery image of a patient to be treated; the image processing device is used for confirming the position and range of pulmonary artery sympathetic nerves based on the pulmonary artery image; the control device is used for controlling the irradiation position area and the irradiation dose of the stereotactic radiotherapy equipment based on the position and the range of the pulmonary artery sympathetic nerves; the irradiation position area comprises a first irradiation area and a second irradiation area; the pulmonary artery structure and the position and the range of pulmonary artery sympathetic nerves of a patient are confirmed through the data acquisition device and the image processing device, and the irradiation position area and the irradiation dose of the stereotactic radiotherapy equipment are regulated according to the positions and the ranges of the pulmonary artery structure and the pulmonary artery sympathetic nerves. The technical effects of applying stereotactic treatment to pulmonary hypertension and removing pulmonary artery sympathetic nerves are achieved.

A method includes receiving preoperative or intraoperative data from an imaging system, receiving interoperatively stereotactic information during a surgical tool tracking from a navigational device, the navigation device configured to identify, confirm, project a location and display the surgical tool within a body, the navigational device further configured to process and interpret volumetric data and the stereotactic information to access a patient's local bone density within and without a current course and directional vector to assist a surgeon to decide on a size and material of an implant to be placed within a patient's bone.

1. The name of the design product: stereotactic apparatus (JS302). 2. The use of the design product: using the three-dimensional coordinate system defined by the marks on the skull or other reference points to determine the location of certain subcortical neural structures in order to stimulate, destroy, inject drugs, guide potential, etc. under non-direct exposure. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: stereogram 1.

A molecular imaging method for guidance in biopsy or surgical procedures includes selecting and inputting two different slant angles for stereotactic molecular imaging of a hot spot, positioning a patient to whom a radiotracer has been administered in a molecular imaging system including a solid-state gamma camera and a variable-angle square hole (VASH) collimator, acquiring two stereotactic molecular images with the VASH collimator, each of the two stereotactic molecular images being acquired when the VASH collimator is adjusted to a different one of the two different slant angles, calculating a 3D position of a hot spot, and performing a molecular image-guided biopsy procedure on the basis of the calculated 3D position. In acquiring the two stereotactic molecular images, the VASH collimator is positioned such that the two different slant angles are in a plane generally parallel (that is, within 30 degrees of parallel) to a coronal plane of the patient.

The application discloses a stereoscopic directional system based on a surgical robot. The system comprises a fixing base, a CT positioning instrument, a CT scanning device and a surgical planning software system, and the surgical robot is rigidly connected with the fixing base. The surgical robot controls a calibration probe to be sequentially inserted into each positioning hole to obtain measured coordinate values of each positioning hole marking point. The surgical planning software system calculates a transformation matrix. According to known coordinate values of an intracranial target point, an implantation angle and a length of a mechanical hand clamping point of an electrode probe, target coordinates of the mechanical hand clamping point in a robot self-coordinate system are calculated, so that when the mechanical hand clamping point reaches the target coordinates and pushes the electrode probe along an implantation direction by a first length, the electrode probe reaches the intracranial target point. The stereoscopic directional system has the advantages of reducing patient trauma, not needing manual leveling, high automation, supporting arbitrary angle implantation, being seamlessly compatible with existing image calibration technology and the like.