65 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 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 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 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.

A fiducial frame 100 for mounting around a patient's head during an x-ray positioning procedure, comprising: a first radiolucent panel 120 located at a first side of the frame, and a second radiolucen

The embodiment of the invention discloses an automatic dose verification system for radiotherapy. The system comprises a first sliding rail, a driving unit, a verification die body and an analysis unit, wherein the analysis unit is used for determining a first position of a to-be-irradiated position of the verification die body on the first slide rail, generating a driving instruction according to the first position, and sending the driving instruction to the driving unit; the driving unit is used for driving the verification die body to move to a first position on the first sliding rail in response to the driving instruction, so that the verification die body moves to a to-be-irradiated position corresponding to the first position, and the verification die body located at the to-be-irradiated position is projected by a first dose corresponding to the stereotactic radiotherapy plan; and the analysis unit is also used for acquiring a second dose received by the verification die body at the to-be-irradiated position, and verifying the second dose according to the first dose to obtain a dose verification result of the stereotactic radiotherapy plan. The problem that it is difficult to ensure accurate verification of the dosage corresponding to the SBRT plan is solved.

Disclosed is a stereotactic guidance device comprising a guide handle coupled inside the driving part, and configured to accommodate a guide tube unit, adjusting the guide tube unit to be positioned toward a target point, and guiding the guide tube unit so that the guide tube unit is provided inside the driving part; a probe accommodating part provided at the guide handle and accommodating a navigation probe; a tube connecting part connected to the guide handle, provided as at least a pair of members to be assembled and disassembled, having one end portion inserted into the guide handle and the other end portion mounted at an upper portion of the guide handle, and guiding the guide tube unit so that the guide tube unit is inserted into and mounted in the driving part; and a guide wire provided in the guide handle and the guide tube unit.

Stereotactic device for cutting hard tissue on the skull bone, with - a stereotactic frame (22) designed to be attached to the head of a patient, and - a stereotactic arc (25) attached to the stereotactic frame (22) via at least one pivot joint, which, when the stereotactic frame (22) is attached to the head of a patient, can be tilted over the head by means of the pivot joint, characterized by that a laser applicator (17) is attached to the stereotactic arc (25) and can be moved along the stereotactic arc (25) via a motor drive (28''), and the stereotactic arc (25) can be tilted on the stereotactic frame (22) via a further motor drive (28, 28'), wherein the laser applicator (17) has a dynamic 2D beam deflection device (11) by which a processing laser beam (2) coupled into the laser applicator (17) can be guided over an area of ​​the hard tissue to be cut, and a focusing optic (12) with a focus position for the coupled processing laser beam (2) adjustable by means of the focusing optic (12) or other optical elements, and wherein a measuring device (6) is arranged in or connected to the laser applicator (17) with which a cutting depth of a kerf produced with the processing laser beam (2) and a residual thickness of the skull bone (15) in the kerf can be measured.

The invention discloses a stereotactic electroencephalogram signal analysis method and device, electronic equipment and a computer program product. The method comprises the following steps: acquiring stereotactic electroencephalogram signals of a plurality of channels; performing high-frequency rapid discharge detection on each stereotactic electroencephalogram signal, and determining a channel where the stereotactic electroencephalogram signal with a high-frequency rapid discharge detection result meeting a preset detection condition is located as a key channel; analyzing a causal relationship among the plurality of key channels by using a multivariable autoregression model to obtain a channel adjacency matrix; the key channels are classified according to elements in the channel adjacent matrix, and a channel classification result is obtained and comprises a starting channel, a propagation channel and a termination channel. According to the method, the technical problem that the propagation condition of the brain discharge activity cannot be estimated by the existing stereotactic electroencephalogram signal analysis technology is solved.

The application discloses a stereoscopic directional device, which comprises a base, a connector, a guide rail, a support and a guide, wherein the base is used for being fixed to a head; one end of the connector is pivotally arranged on the base, and the connector can be detached relative to the base; the guide rail is ball-jointedly arranged on the other end of the connector; one end of the support is slidingly arranged on the guide rail; the guide is embedded on the other end of the support, and the guide is used for guiding the direction of a puncture channel of a stereoscopic directional puncture operation. The base is used for fixing the stereoscopic directional device to the head, the connector is detachably connected with the base, so that the connector can be detached from the base before a CT scanning operation is completed, and the weight of the head of a patient can be reduced. The guide is installed on the guide rail through the support, the guide can move relative to the guide rail, the flexibility and the working range of the stereoscopic directional device can be further improved, and the puncture operation can be accurately, flexibly and quickly positioned. The stereoscopic directional device has the advantages of simple structure, convenient use and low cost.