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18 results about "Transcranial Doppler" patented technology
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Transcranial Doppler (TCD) and transcranial color Doppler (TCCD) are types of Doppler ultrasonography that measure the velocity of blood flow through the brain's blood vessels by measuring the echoes of ultrasound waves moving transcranially (through the cranium). These modes of medical imaging conduct a spectral analysis of the acoustic signals they receive and can therefore be classified as methods of active acoustocerebrography. They are used as tests to help diagnose emboli, stenosis, vasospasm from a subarachnoid hemorrhage (bleeding from a ruptured aneurysm), and other problems. These relatively quick and inexpensive tests are growing in popularity. The tests are effective for detecting sickle cell disease, ischemic cerebrovascular disease, subarachnoid hemorrhage, arteriovenous malformations, and cerebral circulatory arrest. The tests are possibly useful for perioperative monitoring and meningeal infection. The equipment used for these tests is becoming increasingly portable, making it possible for a clinician to travel to a hospital, to a doctor's office, or to a nursing home for both inpatient and outpatient studies. The tests are often used in conjunction with other tests such as MRI, MRA, carotid duplex ultrasound and CT scans. The tests are also used for research in cognitive neuroscience (see Functional transcranial Doppler, below).
Multi-mode intracranial pressure intelligent early warning method and system
The invention relates to the technical field of intelligent early warning, and discloses a multi-mode intracranial pressure intelligent early warning method and system.The method comprises the steps that an intracranial pressure waveform signal, an electroencephalogram signal and a transcranial Doppler blood flow velocity signal are synchronously collected, and a multi-mode physiological data set is obtained; extracting time domain features, frequency domain features and nonlinear features of the preprocessed multi-modal physiological data set to obtain a standardized feature parameter set; distributing dynamic weights for features in the standardized feature parameter set according to feature modal types of the standardized feature parameter set to obtain a fusion feature vector; performing intracranial pressure prediction on the patient according to the fusion feature vector after nonlinear transformation to obtain an intracranial pressure change sequence; according to the deviation condition of the intracranial pressure change sequence and a clinical preset safety threshold value, an intracranial pressure early warning signal is output; the accuracy of intracranial pressure early warning can be improved.
Owner:TONGJI HOSPITAL ATTACHED TO TONGJI MEDICAL COLLEGE HUAZHONG SCI TECH
Transcranial Doppler examination head frame and examination equipment
InactiveCN120938488APatient positioningOrgan movement/changes detectionRadiologyApparatus instruments
The invention relates to a transcranial Doppler examination head frame and examination equipment, and belongs to the technical field of medical instruments. In order to adjust the size of the examination head frame according to the head shape of a patient and facilitate wearing of the patient, the examination head frame comprises a first fixing ring, a second fixing ring, an adjusting sleeve and an adjusting piece, the first fixing ring is used for abutting against the forehead, the second fixing ring is arranged outside the first fixing ring in a sleeving mode and used for being connected with a probe and abutting against the head top, and the adjusting sleeve is arranged on the first fixing ring and used for being connected with the probe. The supporting part is used for abutting against the pillow part and is provided with a containing cavity, and the two free ends are arranged in the containing cavity; the adjusting piece is arranged in the containing cavity, connected with the two free ends and used for adjusting the length of the overlapping area of the two free ends in the containing cavity. According to the examination head frame, the wearing stability and comfort of the examination head frame can be improved, the probability of looseness of the examination head frame in the examination process is reduced, and the accuracy of examination results is improved.
Owner:PEKING UNIVERSITY SHENZHEN HOSPITAL
Intelligent non-invasive intracranial pressure monitoring and analyzing system for PICU
PendingCN121754218AMedical data miningBlood flow measurement devicesBlood flowICP - Intracranial pressure
The invention relates to the technical field of intracranial pressure monitoring, in particular to an intelligent non-invasive intracranial pressure monitoring and analysis system for a PICU, which integrates a multi-modal sensing array of a rigid packaging high-frequency ultrasonic probe and a flexible transcranial Doppler probe to realize conformal contact with the head and neck of a child. And synchronously acquiring an optic nerve sheath ultrasonic image and a middle cerebral artery blood flow spectrum. The system ensures data reliability through a signal quality evaluation and self-adaptive enhancement module, and a hybrid deep learning fusion core is used for estimating intracranial pressure from multi-source features with high precision and giving a confidence interval. The system is internally provided with an intracranial environment dynamic simulation and prediction engine, deduces a compensatory reserve state and predicts a future change trend based on a volume-pressure model, and finally outputs a personalized Pareto optimal intervention strategy sequence through a decision module driven by reinforcement learning. According to the PICU intracranial pressure management system and method, full-process support from non-invasive monitoring and accurate prediction to intelligent decision making is achieved, and the technical level and clinical efficacy of PICU intracranial pressure management are remarkably improved.
Owner:HANGZHOU CHILDRENS HOSPITAL
Noninvasive ICP (inductively coupled plasma) detection and regulation system
ActiveCN121154125APhysical therapyBlood flow measurement devicesExternal Auditory CanalsIntraocular pressure
The invention discloses a noninvasive ICP detection and regulation system which comprises a transcranial Doppler monitoring module, an intraocular pressure sensing module, a tympanic membrane pressure monitoring module, an abdominal pressurization regulation module, a data fusion processing module, an alarm module and a power management module. The monitoring modules collect intracranial artery blood flow velocity waveforms, intraocular pressure pulsation and external auditory canal pressure fluctuation signals respectively and transmit the signals to the data fusion processing module for comprehensive analysis to generate an ICP evaluation result. When the evaluation value exceeds the preset range, the alarm module is triggered, and an instruction is sent to the abdomen pressurization regulation and control module to regulate the abdomen pressure. And the power management module supplies power to each module. According to the system, the detection accuracy is improved through multi-signal fusion, a monitoring-regulation closed-loop mechanism is formed, manual operation is not needed, the response time is shortened, and the regulation consistency is ensured.
Owner:PEKING UNIVERSITY THIRD HOSPITAL (THE THIRD CLINICAL MEDICAL SCHOOL OF PEKING UNIVERSITY)
Operator-independent histotripsy device
A histotripsy device includes a first arm, a second arm spaced apart from the first arm, and a first probe unit. The first probe unit is mounted to the first arm and positioned such that, with the first and second arms coupled to the cranium, the first probe unit is positioned over and in contact with one of a left and right temporal region of the cranium. The first probe unit has a first transducer array configured to emit focused radiation at an ultrasonic frequency or frequency range and a first transcranial doppler probe moveable relative to the first transducer array and configured to emit sound waves.
Owner:QUANTANOSIS AI INC
Transcranial Doppler ultrasound blood flow analyzer head frame
1. Name of the product in this design: Ultrasonic Transcranial Doppler Blood Flow Analyzer Headframe. 2. Purpose of this design: When used in conjunction with a transcranial Doppler ultrasound blood flow analyzer, it can simultaneously fix two probes for long-term intracranial vascular blood flow monitoring. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.
Owner:SUZHOU HAISHEN JOINT MEDICAL DEVICES CO LTD
Method and device for automatically recognizing body position change in supine and standing position test, equipment and medium
The application provides a method and device for automatically identifying body position changes in a supine and standing position test, equipment and a medium, the method comprising: acquiring video data of body position changes of a subject in a supine and standing position test in real time through a camera and preprocessing; performing frame-by-frame processing on the video data, identifying key point information of a skeleton posture through time series analysis of human body key points, and predicting a current action category; based on the prediction result of the action category, sequentially identifying key moments corresponding to the action category in the supine and standing position test; interacting with a transcranial Doppler TCD device through a communication module, transmitting the identification result of the key moment to the TCD device, and marking and displaying on a trend chart of the TCD device, so as to solve the problem that a traditional AI method often only outputs action categories such as “standing”, “walking” and “lying”, cannot accurately mark time points required in medicine such as “head off the bed”, “feet on the ground” and “return to lying”, and is difficult to meet the requirements of real-time and high accuracy in clinical monitoring.
Owner:BEIJING CHIOY MEDICAL TECH CO LTD
Method, device and equipment for automatically identifying body position change in lying and standing position test and medium
The invention provides a method, a device and equipment for automatically recognizing body position changes in a lying and standing position test and a medium. The method comprises the following steps: acquiring video data of the body position changes of a subject in the lying and standing position test in real time through a camera and preprocessing the video data; performing frame-by-frame processing on the video data, identifying key point information of a skeleton posture through time sequence analysis of human body key points, and predicting a current action category; based on the prediction result of the action types, key moments corresponding to the action types in the horizontal and vertical position test are recognized in sequence; through interaction between a communication module and a transcranial Doppler TCD device, an identification result at a key moment is transmitted to the TCD device, and is marked and displayed on a trend chart of the TCD device, so that the problems that in a traditional AI method, only action types such as standing, walking and lying are output, time points required by medical science such as head leaving a bed, foot landing and prostration recovery cannot be accurately marked, and time points required by medical science cannot be accurately marked are solved. And the requirements of clinical monitoring on real-time performance and high accuracy are difficult to meet.
Owner:BEIJING CHIOY MEDICAL TECH CO LTD
Remaining needle for transcranial Doppler ultrasonic imaging
ActiveCN120754359AOrgan movement/changes detectionUltrasonic/sonic/infrasonic dianostic techniquesPhysicsUltrasound imaging
The invention relates to an indwelling needle for transcranial Doppler ultrasonic imaging, belongs to the technical field of medical instruments, and solves the problems that a valve of a three-way infusion connector in the prior art is rotary, series flow is caused due to loose sealing of the valve, and the valve cannot be tightly sealed due to the fact that the valve cannot be easily rotated to an accurate sealing position. The device comprises an injection unit, a mixing unit, a control valve unit, a first mixing bin unit and a second mixing bin unit, wherein the control valve unit is used for switching preparation and conveying paths of a bubble developer; and the first mixing bin unit and the second mixing bin unit are respectively used for co-acting with the first injector to prepare and store a bubble developer. Compared with the prior art that a user holds a first injector and a second injector with two hands respectively, and the two injectors push each other to mix pumped-back blood with normal saline and air to prepare the bubble developer, the bubble developer preparation device only needs one hand, and preparation operation of the bubble developer is facilitated.
Owner:PEKING UNIVERSITY THIRD HOSPITAL (THE THIRD CLINICAL MEDICAL SCHOOL OF PEKING UNIVERSITY)
Method and system for identifying smoke disease cerebral blood flow collateral establishment condition based on TCD parameters
PendingCN120918700ABlood flow measurement devicesInfrasonic diagnosticsTime domainFrequency spectrum
The invention provides a method and a system for identifying smog disease cerebral blood flow collateral establishment conditions based on TCD parameters, and relates to the technical field of acoustic diagnosis, the method comprises the following steps: firstly, obtaining an original transcranial Doppler spectrum signal, calculating a filtering factor, and dynamically adjusting bandwidth and notch depth to realize optimal noise reduction; segmenting the cleaned signal by using a sliding window, and continuously analyzing dynamic changes such as instantaneous maximum speed, echo energy, spectral entropy and the like; determining and executing first window resetting according to the window trend representation value to generate a first group of more stable and coherent time domain segments; and performing multilayer decomposition on the first group of segments, extracting features of each sub-band, and triggering a second round of window resetting to obtain a second group of more balanced segments, thereby not only suppressing noise and keeping signal details to the greatest extent, but also continuously optimizing window and filter setting for different monitoring environments, and improving the monitoring efficiency. Therefore, powerful technical support is provided for noninvasive, dynamic and high-confidence identification of smog disease cerebral blood flow collateral establishment conditions.
Owner:THE FIRST MEDICAL CENT CHINESE PLA GENERAL HOSPITAL
PD motion subtype classification method based on transcranial Doppler and Bayesian analysis
ActiveCN121129314ABlood flow measurement devicesOrgan movement/changes detectionPattern recognitionBlood flow
The invention discloses a PD motion subtype classification method based on transcranial Doppler and Bayesian analysis, and relates to the technical field of medical diagnos.The method comprises the steps that S1, cerebral blood flow velocity signals of a subject in different physiological states are collected through transcranial Doppler equipment, and arterial blood pressure signals are synchronously collected through continuous non-invasive blood pressure monitoring equipment; s2, processing the signals collected in the S1, and extracting characteristic indexes reflecting the dynamic cerebral blood flow automatic adjusting function; s3, combining the feature indexes with the basic hemodynamic parameters to form feature vectors; s4, inputting the feature vector into a pre-trained Bayesian discrimination model; and S5, classifying the subjects into different Parkinson's disease motion subtypes according to the output of the Bayesian discrimination model. The method has the advantages of improving classification objectivity, capturing dynamic physiological signal features, achieving accurate subtype identification and the like.
Owner:XUANWU HOSPITAL OF CAPITAL UNIV OF MEDICAL SCI
Transcranial Doppler dual-mode ultrasonic detection device
ActiveCN120959794ABlood flow measurement devicesInfrasonic diagnosticsHuman bodyApparatus instruments
The invention discloses a transcranial Doppler dual-mode ultrasonic detection device, and belongs to the field of medical instruments. A cable; a back lining layer, a piezoelectric layer, a matching layer and a lens layer are sequentially arranged in the execution probe in the detection direction, and the cable penetrates through the handle and the back lining layer and is electrically connected with the piezoelectric layer; the piezoelectric layer comprises a TCD piezoelectric ceramic array element and TCCD piezoelectric ceramic arrays symmetrically distributed on the two sides of the TCD piezoelectric ceramic array element. The detection area of the TCD piezoelectric ceramic array element is at least partially overlapped with the imaging area of the TCCD piezoelectric ceramic array, and the overlapped part of the detection area and the imaging area is an overlapped area; and when the overlapped area scans the human body part, the TCD piezoelectric ceramic array element acquires Doppler spectrum information of the part, and meanwhile, the TCCD piezoelectric ceramic array acquires an image of the part. Through the arrangement, the probe does not need to be moved when the TCD mode and the TCCD mode are switched.
Owner:JILIN UNIV FIRST HOSPITAL
Microbubble generation and injection device for transcranial Doppler foaming test
ActiveCN223914489UOrgan movement/changes detectionAutomatic syringesMicro bubbleReciprocating motion
The utility model relates to the field of medical instruments, in particular to a microbubble generation and injection device for a transcranial Doppler foaming test, which comprises a microbubble generation device, an injector pushing device and a controller, the microbubble generating device comprises two injectors and two three-way switches, each injector comprises a cylinder and a piston movably mounted in the cylinder, and the bottom of each cylinder is connected with the corresponding three-way switch; the injector pushing device comprises a base, a clamping mechanism is fixedly arranged on the base, the clamping mechanism comprises a fixing piece and a limiting block, the clamping mechanism fixes the cylinder in the fixing piece through the limiting block, a driving mechanism is fixedly arranged on the fixing piece, the driving mechanism pushes the piston to reciprocate in the cylinder, and the controller is electrically connected with the driving mechanism. The microbubble foaming device can replace manual foaming, has the operation frequency which can not be reached by a human hand, can generate microbubbles with different sizes and distribution according to requirements, is stable in foaming and high in repeatability, and avoids instability of manual foaming and the risk that an operator suffers from tenosynovitis.
Owner:GUANGDONG GENERAL HOSPITAL +1
Transcranial Doppler probe total transmission fixing system compatible with digital subtraction angiography environment
PendingCN122056617ARadiation diagnostic device controlOperating tablesIntegrated designMr angiography
The invention discloses a transcranial Doppler probe total transmission fixing system compatible with a digital subtraction angiography environment. The system comprises: a base module for stably anchoring the system to an operating bed; the connecting arm module is composed of a connecting rod and a joint which can be transmitted by X-rays and is used for providing large-range coarse positioning; and a probe clamping and fine adjusting module. The core of the device is that a probe clamping-holding and fine adjustment module adopts an integrated design, a spherical hinge mechanism used for large-angle attitude adjustment and an XYZ three-axis fine adjustment mechanism used for precise translation are integrated in a single unit made of a total-transmission material, and mechanical decoupling of a coarse adjustment locking force and a fine adjustment mechanism is realized. According to the system provided by the invention, X-ray artifacts can be avoided, the interference risk with the C-shaped arm is reduced, stable, accurate and repeatable positioning is provided for the TCD probe, and continuous and stable monitoring signals are ensured.
Owner:ZHEJIANG PROVINCIAL PEOPLES HOSPITAL +1
Pd motor subtype classification method based on transcranial doppler and bayesian analysis
ActiveCN121129314BBlood flow measurement devicesOrgan movement/changes detectionPattern recognitionBlood flow
The application discloses a PD movement subtype classification method based on transcranial Doppler and Bayesian analysis, and relates to the technical field of medical diagnosis, and comprises the following steps: S1, collecting the cerebral blood flow velocity signals of a subject under different physiological conditions through a transcranial Doppler device, and synchronously collecting the arterial blood pressure signals through a continuous noninvasive blood pressure monitoring device; S2, processing the signals collected in S1, and extracting characteristic indexes reflecting the dynamic cerebral blood flow automatic regulation function; S3, combining the characteristic indexes with basic hemodynamic parameters to form a characteristic vector; S4, inputting the characteristic vector into a pre-trained Bayesian discriminant model; and S5, according to the output of the Bayesian discriminant model, classifying the subject into different Parkinson's disease movement subtypes. The application has the advantages of improving classification objectivity, capturing dynamic physiological signal characteristics, and realizing precise subtype identification.
Owner:XUANWU HOSPITAL OF CAPITAL UNIV OF MEDICAL SCI
Non-invasive ICP detection and regulation system
The application discloses a noninvasive ICP detection and regulation system, comprising a transcranial Doppler monitoring module, an intraocular pressure sensing module, a tympanic membrane pressure monitoring module, an abdominal pressure regulation module, a data fusion processing module, an alarm module and a power management module. The monitoring modules respectively collect intracranial arterial blood flow velocity waveform, intraocular pressure pulsation and external auditory canal pressure fluctuation signals, and transmit the signals to the data fusion processing module for comprehensive analysis to generate an ICP evaluation result. When the evaluation value exceeds a preset range, the alarm module is triggered, and an instruction is sent to the abdominal pressure regulation module to adjust the abdominal pressure. The power management module supplies power to each module. The system improves detection accuracy through multi-signal fusion, forms a monitoring-regulation closed-loop mechanism, does not need manual operation, shortens response time and guarantees regulation consistency.
Owner:PEKING UNIVERSITY THIRD HOSPITAL (THE THIRD CLINICAL MEDICAL SCHOOL OF PEKING UNIVERSITY)
Transcranial doppler dual mode ultrasound probe
ActiveCN120959794BBlood flow measurement devicesInfrasonic diagnosticsHuman bodyApparatus instruments
The application discloses a transcranial Doppler dual-mode ultrasonic detection device, and belongs to the field of medical instruments, which comprises a handle, a cable and an execution probe, wherein a backing layer, a piezoelectric layer, a matching layer and a lens layer are sequentially arranged in a detection direction in the execution probe, the cable penetrates through the handle and is electrically connected with the piezoelectric layer; the piezoelectric layer comprises a TCD piezoelectric ceramic array element and a TCCD piezoelectric ceramic array which is symmetrically distributed on both sides of the TCD piezoelectric ceramic array element; a detection area of the TCD piezoelectric ceramic array element and an imaging area of the TCCD piezoelectric ceramic array at least partially coincide, and the coincident part of the detection area and the imaging area is a coincident area; when the coincident area sweeps a human body part, the TCD piezoelectric ceramic array element acquires Doppler spectrum information of the part, and simultaneously, the TCCD piezoelectric ceramic array acquires an image of the part. Through the above arrangement, the execution probe does not need to be moved when the TCD mode and the TCCD mode are switched.
Owner:JILIN UNIV FIRST HOSPITAL
Method and system for monitoring brain function and intracranial pressure
ActiveUS12465232B2Blood flow measurement devicesInfrasonic diagnosticsElectroencephalographyICP - Intracranial pressure
Embodiments of the present systems and methods may provide improved, automated monitoring of brain function. In embodiments, a multimodal, multi-sensor monitoring device may provide to monitoring of the full spectrum of brain function. In an embodiment, a system for monitoring brain function of a subject may include an apparatus for mounting a plurality of stimulus and response sensors on a head of the subject, including a cognizance stimuli-sensor suite, a physiologic sensor suite, and advance monitoring devices such as a transcranial Doppler puck, an electroencephalograph monitor, and an optic nerve sheath parameter sensor.
Owner:AUGUSTA UNIV RES INST INC