65 results about "Jugular vein" patented technology

The invention relates to the technical field of biomedical engineering. The invention discloses a triggering method and device of magnetic resonance imaging equipment based on multi-modal signal fusion, terminal equipment and a storage medium. The accuracy of triggering the magnetic resonance imaging equipment to collect images can be improved. The method comprises the following steps: acquiring a first morphological characteristic of a heart vibration signal of a target object, a second morphological characteristic of a jugular vein pulse signal and a third morphological characteristic of a photoelectric volume pulse wave signal; constructing a heterogeneous graph based on the first morphological feature, the second morphological feature and the third morphological feature; performing global graph feature vector extraction processing on the heterogeneous graph by adopting a heterogeneous graph attention network to obtain a target global graph feature vector; and performing time prediction processing on the target global map feature vector by adopting a trigger control model to obtain target time, and triggering magnetic resonance imaging equipment to collect images when the target object is in the middle and later period of cardiac diastole based on the target time.

This utility model relates to an innovation of a carotid artery vasodilator that can be used at home and in the emergency room as a supplement to drug treatment for conditions such as carotid artery obstruction in the neck region. It increases the production of nitric oxide mediated by endothelial nitric oxide synthase in the intact endothelial layer of the carotid artery, which is located on the inner surface of the neck brace. It can be applied for a certain period of time for each patient. The intermittent or continuous operation function can be selected through an adjustable power circuit. It only affects the lesion area and does not affect the patient's peripheral blood vessels. It can be used in situations where nitrates may be prohibited. It prevents the reduction of blood flow to the brain tissue that may occur due to jugular venous constriction. The flexible structure of the applicator neck brace (9) can be maintained in the application area for a long time and includes a pulsed magnetic field (PMF).

A medical system configured to detect and / or monitor one or more physiological parameters of the patient including an electroencephalogram (EEG) of the patient, a oxygen level of the blood patient (e.g., a jugular venous oxygen saturation (SjVO2)), and / or a blood flow of the patient (e.g., a cerebral blood flow). The medical system may include processing circuitry configured to monitor the physiological parameters and compare the physiological parameters to one or more thresholds. The medical system may be configured to indicate that the patient may have experienced a stroke based on the comparison of the physiological parameters with the thresholds. In examples, the processing circuitry is configured to indicate a type of stroke the patient may have experienced based on the comparison.

The invention provides a method for screening candidate genes and SNP (Single Nucleotide Polymorphism) loci related to residual feed intake of Sahu hybrid sheep, which is characterized by comprising the following steps: S1, collecting jugular vein blood samples of the Sahu hybrid sheep, and extracting genomic DNA (Deoxyribose Nucleic Acid) of the blood samples for quality detection; the method comprises the following steps: S1, extracting DNA, S2, carrying out whole genome re-sequencing on the extracted DNA and carrying out genotyping to obtain SNP genotype data, and S3, carrying out reference genome comparison, SNP detection and genotype quality control. And S4, carrying out whole genome association analysis on the residual feed intake character of the Sahu hybrid sheep to obtain a significant SNP site. The nucleotide sequence of the SNP site obviously related to the residual feed intake of the Sahu hybrid sheep, which is obtained by the method provided by the invention, is as shown in SEQ ID NO.1, the basic group R at the 51st site of the sequence is A or G, the gene mutation causes the nucleotide of the sequence to generate polymorphism, and when the marker is mutated into G, the Sahu hybrid sheep shows lower residual feed intake.

The invention provides an image-clinical characterization-combined multi-endpoint prognosis evaluation method for transjugular vein intrahepatic portal vein shunt, which comprises the following steps of: constructing a few-label portal vein segmentation module to obtain a preoperative CT portal vein label of a full-dose patient, and extracting deep learning features and radiomics features of the region; establishing a multi-modal interactive representation learning module for implementation, and performing cross-modal fusion with clinical features to form unified representation; and designing a multi-endpoint prognosis prediction module, inputting the data to a plurality of prognosis task decoders for postoperative survival, portal vein pressure gradient, hepatic encephalopathy prediction and the like, and adopting a multi-task learning optimization model to obtain a postoperative multi-endpoint prognosis evaluation result. According to the method, efficient fusion and multi-endpoint prognosis prediction of images and clinical information can be realized under limited labeling, clinical doctors can be assisted in preoperative patient screening and treatment scheme making, and the method has good clinical application value.

Provided herein are compact sensor continuously and wirelessly senses blood constituents including a mm-wave newly designed sensor validates its ability to correlate received base-band power levels variations, rather than S-parameters, with the variations in blood glucose levels of serum [FBS] and in that of the jugular veins and carotid arteries for animals and humans.

An ICE imaging system is disclosed that includes an intracardiac echocardiography (ICE) catheter having a longitudinal axis, a proximal end, and a distal end. The ICE catheter corresponds to a micro-electro-mechanical (MEMS) or other transducer-based phased array ultrasound catheter with an outer diameter of 6 French or less for delivery through the internal jugular vein, subclavian vein, axillary vein, unknown vein system to the heart chamber for lead placement for pacemaker or other implantable cardioverter defibrillator (ICD) devices. Further, the catheter shaft accommodates an electronic flexible cable in communication with the at least one signal trace and configured to direct the plurality of transducer array elements to transmit and receive an ultrasound beam, receive at least one signal from the plurality of transducer array elements, and transmit the ultrasound beam to the catheter shaft. And constructing at least one image of at least a portion of the heart based on the at least one signal.

The invention relates to the technical field of hemodialysis capacity load evaluation, in particular to a chronic kidney disease patient hemodialysis capacity load evaluation method, which comprises the following steps: acquiring staged ultrafiltration rate and body position angle time sequence data in dialysis in real time, generating ultrafiltration and body position coupling time period marks through a space-time matching algorithm, and determining the hemodialysis capacity load of a chronic kidney disease patient according to the ultrafiltration and body position coupling time period marks. During a coupling period, ambulatory blood pressure, jugular vein diameter and pulse wave conduction velocity data are collected at high frequency, an ultrafiltration rate fluctuation value, a body position angle change value and collected physiological index data are input into a pre-training interference calibration model, and blood vessel compliance false interference is decoupled through feature fusion and cross-modal correlation analysis. And finally, combining the weight difference before and after dialysis and biomarker detection data, calculating a dry weight deviation coefficient, and judging capacity overload, capacity insufficiency or a critical state, thereby providing an accurate basis for adjustment of a dialysis scheme, and improving the accuracy and safety of capacity load evaluation.

A medical device assembly and method of using the assembly are disclosed for measuring a tract length during a transvascular procedure such as a Transjugular Intrahepatic Portosystemic Shunt (TIPS) procedure, or a Direct Portosystemic Intrahepatic Shunt (DIPS) procedure. The present invention provides a telescoped assembly for injecting contrast at a first location and a second location, the first and second locations on opposing sides of the tract, while substantially maintaining the position of the assembly, and without removing one or more inner devices from the assembly, thereby reducing procedure time.

An apparatus for measuring a jugular vein pressure waveform comprises a rotation sensor (102) configured to produce a measurement signal when being against a skin of an individual and in a movement sensing relation with a jugular vein (104) of the individual. The apparatus comprises a processing system (101) configured to receive the measurement signal and produce a waveform of a motion of the skin in a direction perpendicular to the skin based on the measurement signal indicative of rotation of the rotation sensor, where the waveform of the motion of the skin is indicative of the jugular vein pressure waveform. The rotation sensor that measures rotation is more insensitive to movements not related to variation of the jugular vein pressure than for example an acceleration sensor.

Embodiments described herein relate to a stent for vascular interventions. The stent may be used for jugular vein interventions. The stent addresses challenges inherent to the jugular vein by incorporating adaptability, sizing versatility, and a self-expanding mechanism. In some embodiments, the stent may include Nitinol for biocompatibility. In some embodiments, the stent includes a tapered body and may be configured to have a diameter corresponding to a diameter of a jugular vein of a patient. In some embodiments, the stent may include open-cell and / or closed-cell geometries. In some embodiments, the stent may include peak-to-valley (PTV) and helical bridge connections between cells.

The invention discloses a transjugular vein intervention type retrograde coronary sinus drug delivery catheter system, and relates to the technical field of catheters.The transjugular vein intervention type retrograde coronary sinus drug delivery catheter system comprises an injection base, a catheter and a balloon, the catheter comprises an air pipe and an infusion pipe which are integrally arranged, one end of the air pipe is connected to the injection base, the other end of the air pipe is connected with the balloon, and the balloon is used for blocking coronary sinus of the heart of a patient; the external end of the air tube can inject or extract air, one end of the infusion tube is connected to the injection base, the other end of the infusion tube is located in the heart of a patient, and the infusion tube penetrates through the balloon, is in sealed connection with the end of the balloon and is used for injecting liquid medicine or virus solution. The balloon can be used for blocking coronary sinus for a period of time to block venous circulation, and then the catheter is used for retrograde injection of awns or viruses into a coronary vein system, so that drugs directly act on myocardial tissues for a period of time, the local action time of the drugs is prolonged, the treatment efficiency is improved, systematic toxic and side effects are reduced, thoracotomy is not needed, and the treatment cost is reduced. The operation is more convenient.

The device for measuring jugular vein pressure waveforms includes a rotation sensor (102) configured to generate a measurement signal when it is in contact with the individual's skin and in a relationship with the individual's jugular vein (104) that detects movement. [Solution] The device includes a processing system (101) configured to receive a measurement signal and generate a waveform of skin movement perpendicular to the skin based on the measurement signal indicating rotation of a rotation sensor, wherein the waveform of skin movement indicates a jugular vein pressure waveform. The rotation sensor that measures rotation does not respond to movements unrelated to fluctuations in jugular vein pressure, for example, an acceleration sensor.

The invention discloses an interventional valve ring device and an interventional valve device. The interventional valve ring device and the interventional valve device can be used for mitral valve and tricuspid valve lesions. The interventional valve ring device is mainly composed of a valve ring, a valve ring conveying system, a fixing nail and a fixing nail conveying system. The interventional valve is mainly composed of a fixing support, a supporting support, a supporting support covering film and valve leaflets. The interventional valve ring and the interventional valve enter the heart through the interventional delivery system and can pass through the apex of the heart, the femoral vein, the jugular vein or the subclavian vein, the right atrium or the left atrium. The interventional valve is fixed in the interventional valve ring, and a minimally invasive, safe and effective treatment method can be provided for a patient.

The application provides a jugular vein dialysis catheter joint disinfection sealing fixing device, which comprises a shell, disinfection wiping mechanisms, a sealing outer bag, an arteriovenous catheter joint sealing inner bag, a strip-shaped elastic head cover and an ear cover; a partition plate is horizontally arranged in the shell; an upper cavity is formed above the partition plate in the shell; the disinfection wiping mechanisms are arranged below the partition plate in the shell and close to the front side and the rear side; the sealing outer bag is placed in the upper cavity of the shell; and the arteriovenous catheter joint sealing inner bag is arranged in the sealing outer bag in front and behind. In the insertion process of the arteriovenous catheter joint, the disinfection wiping mechanisms are driven to rotate, the elastic scraping blade is slid and scrapes off dirt (such as blood scabs) in the thread groove, the arteriovenous catheter joint is reduced to be exposed to the outside world, the probability of contamination of the arteriovenous catheter joint is reduced, the workload of medical staff is reduced, and pollution caused by manual operation of the medical staff is avoided.

The invention relates to the technical field of tearable tube sheaths, in particular to a tearable shunt tube sheath for ventricular jugular vein shunt, which comprises a catheter sheath and a mounting base inserted into the upper end of the catheter sheath, the catheter sheath is detachably connected with the mounting base, and an expansion catheter is fixedly mounted at the upper end of the mounting base. A hemostasis valve is mounted at the lower end of the mounting base; mechanical locking and pressing force adjustment are conducted on the two tearable tubes through the connecting piece, the situation that a traditional tube sheath needs to be torn open is avoided by pulling the pulling-out unit, the connecting piece is stably and linearly pulled out as a whole, and in the process, instant traction force and vibration generated due to material tearing and buckle separation when a sheath tube is torn in a traditional mode are completely avoided; the risk of tiny displacement of the tip of the accurately positioned shunt tube caused by sheath tube removal operation is eliminated, the shunt tube is always stabilized at the optimal position in the middle of the right atrium, and the operation success rate is increased.

The invention relates to the technical field of biomedical engineering. The invention discloses a method, a device and a system for measuring jugular vein pulsation based on defocus speckle imaging and a medium. The sensitivity and the accuracy of measuring jugular vein pulsation signals can be improved. The method comprises the following steps: after positioning a vein part of the neck of a target object, performing out-of-focus speckle video acquisition processing to obtain a target out-of-focus speckle video; directional motion signal extraction processing is carried out on the target out-of-focus speckle video, a target direction motion signal corresponding to each pixel point in a target image is obtained, and the target image is one frame of image of the target out-of-focus speckle video; and carrying out average value calculation processing on the target direction motion signals corresponding to all the pixels of the target image to obtain a jugular vein pulsation signal of the target object.

The invention belongs to the technical field of animal husbandry detection, and discloses an adjustable animal husbandry stabilizing veterinary portable detection box which comprises a box body, a T-shaped placement groove is formed in the top face, close to one side of the box body, of the box body, a supporting plate is arranged at the bottom of the interior of the placement groove, and the side wall of the supporting plate is connected with a rotating plate through an adjusting structure; according to the device, an inclined plate, a supporting plate, a cover plate and the like are arranged, before the device is used, the cover plate is rotationally opened and fixed, then a veterinarian can place a live pig in a placing groove, the four limbs of the live pig are embedded into fixing holes, the veterinarian immediately sits on the upper portion of the box body and extrudes the inclined plate from the side face, and then the live pig is placed in the placing groove; the rotating plate and the supporting plate are driven to rotate through the gear and the transmission shaft, the live pig is forced to rotate, the live pig is clamped and fixed between the cover plate and the supporting plate, at the moment, the live pig is in a side-lying state, a doctor can directly draw blood from the jugular vein through the through hole, and the device can be used by a single person.

The application provides a jugular vein thrombus prevention device, which comprises a shell, mounting plates are arranged at both ends of the shell, the shell and the mounting plates are connected through a driving assembly to drive the mounting plates to reciprocate in a ring direction. One end of each of the two groups of mounting plates is provided with a mounting shell, a plurality of first massage columns are arranged on the mounting shell; a flexible belt is arranged on the mounting shell in a hinged manner, a plurality of second massage columns are arranged on one side of the flexible belt, a control plate is further arranged in the mounting shell and is slidably arranged along an axis of the mounting shell, one end of the control plate is provided with a flexible plate, and one end of the flexible plate is connected with the flexible belt. An adjusting mechanism connected with the control plate is further arranged in the mounting shell, and the control plate is driven to slide along the axis of the mounting shell through the adjusting mechanism. The device can be fixed on the neck of a patient, the two groups of mounting shells and the flexible belt are driven to reciprocate through the driving assembly, and the first massage columns and the second massage columns massage the jugular vein of the patient, so that the thrombus of the neck is effectively prevented.

The present invention provides a [ 2 H2] A method for determining bovine protein turnover metabolism by tyrosine tracing combined with nitrogen balance, belonging to the technical field of protein turnover metabolism determination, comprising S1. Nitrogen balance determination method: determining the nitrogen content of bovine feed, feces, and urine samples; S2. Isotope tracing determination method: S21. inserting an isotope injection tube and a blood collection tube into the bovine jugular vein; S22. collecting a baseline blood sample, and then injecting an initial dose of [ 2 H2] tyrosine, then continuous infusion [ 2 H2] tyrosine, in the infusion [ 2 H2] tyrosine in the last period of time, collect the test blood sample; S23. Centrifuge the two blood samples to obtain the corresponding plasma, and then measure the [ 2 H2] tyrosine abundance. The present invention pioneered the use of [ 2 H2] Tyrosine tracing combined with nitrogen balance is used to determine bovine protein turnover metabolism, which is an efficient and low-cost method.

According to the technical scheme, the fixing device is characterized in that the fixing device comprises an elastic fixing band, the head and the tail of the elastic fixing band are provided with a hook-and-loop fastener son face and a hook-and-loop fastener mother face respectively, the hook-and-loop fastener son face and the hook-and-loop fastener mother face adhere to each other, and two sets of fixing assemblies used for fixing the catheter are symmetrically arranged on the elastic fixing band; the fixing assembly comprises a base arranged on the surface of the elastic fixing band, a first fixing plate is arranged on one side of the base, a vertical plate is arranged on the other side of the top side of the base, a second fixing plate is slidably connected to the side, opposite to the first fixing plate, of the vertical plate through an extrusion spring, and a pull rope penetrating through the vertical plate is installed on the back face of the second fixing plate. The hemodialysis catheter fixing band has the technical effects that when a patient wears the elastic fixing band, the hemodialysis catheter is conveniently and quickly fixed through the mutual adhesion of the hook-and-loop fastener son surface and the hook-and-loop fastener mother surface, and the wearing comfort of the patient is improved.

An apparatus for measuring a jugular vein pressure waveform comprises a rotation sensor (102) configured to produce a measurement signal when being against a skin of an individual and in a movement sensing relation with a jugular vein (104) of the individual. The apparatus comprises a processing system (101) configured to receive the measurement signal and produce a waveform of a motion of the skin in a direction perpendicular to the skin based on the measurement signal indicative of rotation of the rotation sensor, where the waveform of the motion of the skin is indicative of the jugular vein pressure waveform. The rotation sensor that measures rotation is more insensitive to movements not related to variation of the jugular vein pressure than for example an acceleration sensor.

The invention relates to the field of in-vitro diagnostic kits, and discloses a kit for predicting the curative effect of deep jugular vein lymphatic anastomosis of Alzheimer's disease and screening adaptive population and application of the kit. The kit comprises a mass spectrometry detection module, an ELISA detection module and a logistic regression model, the mass spectrum detection module is used for detecting the protein concentrations of NPTX2 and IGSF10 in a sample; the ELISA detection module is used for detecting the protein concentrations of ptau181 and A beta 42 in a sample; by calculating the NPTX2 / IGSF10 ratio and the ptau181 / A beta42 ratio and combining with a logistic regression model, the LVA operation curative effect is predicted, and adaptive people are screened. The kit provided by the invention has high sensitivity and specificity, can accurately detect the concentration of related proteins in a sample, and provides a reliable basis for curative effect prediction of Alzheimer's disease deep jugular vein lymphatic anastomosis (LVA) and adaptive population screening.

Embodiments described herein relate to a stent for vascular interventions. The stent may be used for jugular vein interventions. The stent addresses challenges inherent to the jugular vein by incorporating adaptability, sizing versatility, and a self-expanding mechanism. In some embodiments, the stent may include Nitinol for biocompatibility. In some embodiments, the stent includes a tapered body and may be configured to have a diameter corresponding to a diameter of a jugular vein of a patient. In some embodiments, the stent may include open-cell and / or closed-cell geometries. In some embodiments, the stent may include peak-to-valley (PTV) and helical bridge connections between cells.

A system, apparatus, and method of using the same are disclosed for carrying out a transvascular procedure such as a Transjugular Intrahepatic Portosystemic Shunt (TIPS) procedure using energy to create a tract between the hepatic vein and the portal vein. The present invention provides a method using a flexible radiofrequency (RF) catheter having a lumen therethrough. The method involves the steps of advancing the flexible RF catheter into a first vessel; advancing a guiding sheath overtop of the flexible RF catheter; steering the guiding sheath to direct a distal tip of the RF catheter towards a second vessel; and, delivering RF energy via the flexible RF catheter, forming a tract from the first vessel and entering the second vessel.

This application relates to the field of medical device control technology. This application discloses a triggering method, device, terminal equipment, and storage medium for a magnetic resonance imaging (MRI) device based on jugular vein pulsation signals. This method can avoid magnetic field interference and achieve more accurate and stable imaging triggering for the MRI device. The method includes acquiring the jugular vein pulsation signal of the target object; generating the dominant radial directions of the a-wave, c-wave, and v-wave for each cycle based on the jugular vein pulsation signal; obtaining a reconstructed jugular vein pulsation signal based on the dominant radial directions of the a-wave, c-wave, and v-wave for each cycle; extracting key temporal features from the reconstructed jugular vein pulsation signal to obtain key temporal features of the target; and using a trigger control model to predict the trigger pulse of the target key temporal features to obtain the target trigger pulse for the MRI device.

The application belongs to the technical field of biology, and discloses a system for continuous drainage of mesenteric lymph fluid and application thereof, which comprises a mesenteric lymph vessel catheter for being inserted into a mesenteric lymph vessel to drain mesenteric lymph fluid, a jugular vein catheter for being inserted into a jugular vein, a collector for collecting lymph fluid, and a conscious activity device comprising a quick connection button VAB and a mesenteric lymph fluid collecting tube, wherein the outlet end of the mesenteric lymph fluid collecting tube is in the same height as the inlet end of the mesenteric lymph vessel catheter. The method can realize real-time and long-term collection of lymph fluid under the conditions of free activity, unrestricted diet and water and normal physiological state of rats, can avoid the influence of surgical stress, general anesthesia or animal restriction on experimental results, can reflect the real state of lymph fluid, and can be applied to the fields of research on lymph vessel absorption capacity and functional state and explanation of disease mechanism.

The invention belongs to the technical field of medical simulation training equipment, and discloses an ECMO training anthropomorphic dummy system and an application method.The ECMO training anthropomorphic dummy system comprises a constant-temperature water tank power pump system and an anthropomorphic dummy circulation system; a first control valve is arranged on a pipeline connecting the right chamber and the right ventricle outlet, the left chamber is communicated with the right chamber, a second control valve is arranged on the connecting pipeline, temperature adjusting modules are arranged in the left chamber and the right chamber respectively, the left chamber is connected with the left atrium inlet, the left ventricle outlet is communicated with the proximal end of the carotid artery and the proximal end of the femoral artery, and the right ventricle outlet is communicated with the proximal end of the femoral artery. The proximal ends of the jugular vein and the femoral vein are both communicated with the right atrium inlet, the simulated blood outlet of the constant-temperature water tank power pump system is communicated with the distal ends of the jugular vein and the femoral vein, and the simulated blood backflow port is communicated with the distal ends of the carotid artery and the femoral artery. According to the invention, changes of the blood oxygenation degree and the blood coagulation state of a patient in ECMO treatment can be visually simulated.

1. The name of the design product: jugular vein temporary dialysis catheter fixing band. 2. The use of the design product: for ear hanging type fixing jugular vein temporary dialysis catheter. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: design 1 change state diagram 1. 5. The design product is a thin product, omitting design 1 left view, design 1 right view, design 1 top view, design 1 bottom view, design 2 left view, design 2 right view, design 2 top view, design 2 bottom view. 6. Design 1 is designated as the basic design.