84 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.

The utility model discloses a rat jugular vein blood sampling fixing table which comprises a placing table, the side inner wall of the placing table is fixedly connected with a guide shaft, the side surface of the guide shaft is movably connected with a sleeve, the side surface of the sleeve is fixedly connected with a limiting plate, the side surface of the limiting plate is fixedly connected with a mounting block, and the mounting block is fixedly connected with a fixing plate. The side surface of the mounting block is in threaded connection with a bolt, and the upper surface of the mounting block is fixedly connected with a sleeve. According to the structure, through cooperation of the guide shaft, the sleeve, the limiting plate, the mounting plate, the bolt, the casing pipe, the first telescopic rod, the pressing plate and the first binding rope, rats with different sizes can be fixed, the practicability of the device is improved, the four limbs of the rats can correctly penetrate through the casing pipe to be fixed, fixing is more accurate, and the practicability of the device is improved. The movable sleeve enables the head of the rat to be located above the inclined plate all the time, the angle of the inclined plate can be adjusted, and then the neck unfolding degree of the fixed rat is adjusted, so that blood sampling is facilitated.

The invention relates to the technical field of medical instruments, and provides a vena cava filter capturing guide wire and device. And the stop block is arranged on the peripheral wall of the guide wire and is fixed relative to the guide wire. When the capturing guide wire is used, a transcervical passage and a transfemoral passage are firstly established, and then a catheter or an adjustable bent catheter is conveyed to a filter through the transfemoral passage; then a guide wire firstly penetrates through a central hole of the filter through a catheter, then the capture device is used for pulling the guide wire out of the jugular vein through the jugular vein channel until resistance is felt, at the moment, the stop block abuts against the central hole of the filter, and then a recovery sheath for capture is inserted into a blood vessel through the jugular vein through the guide wire; when the recovery sheath reaches the position of a recovery hook of the filter, the filter can be corrected by pulling the guide wire, if the recovery hook is adhered, the guide pipe can be pushed along the guide wire and the recovery hook, and the filter is recovered while the recovery hook is stripped. And when the filter completely enters the recovery sheath, the recovery sheath and the guide wire are withdrawn to complete the recovery of the filter.

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 determining bovine protein turnover metabolism through combination of [2H2] tyrosine tracing and nitrogen equilibrium, and belongs to the technical field of protein turnover metabolism determination. Comprising the following steps: S1, a nitrogen balance determination method: determining the nitrogen content of cattle feed, excrement and urine samples; s2, an isotope tracing determination method: S21, putting an isotope injection tube and a blood collection tube into the bovine jugular vein treatment; s22, collecting a baseline blood sample, injecting [2H2] tyrosine with an initial dose, continuously infusing the [2H2] tyrosine, and collecting a test blood sample in the last period of time of infusing the [2H2] tyrosine; and S23, respectively centrifugally separating the two blood samples to obtain corresponding plasma, and then measuring the abundance of [2H2] tyrosine in the plasma of the blood samples. According to the method, the bovine protein turnover metabolism is creatively determined by combining [2H2] tyrosine tracing with nitrogen balance, and the determination method is efficient and low in cost.

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.

Disclosed are devices and methods for determining and memorializing chest electrode placement locations on a user. The device utilizes two datum reference points in the patient's anatomy, the Jugular notch and the Xiphoid process, which are easily found and repeatable and which serve to ensure the device is in the correct position to memorialize chest electrode placement locations. The device may comprise a first plate and a second plate operatively coupled to the first plate so that the second plate slides along a vertical axis of the first plate and the first plate slides along a vertical access of the second plate. The device may further comprise a template grid having a plurality of cells printed thereon. The template grid may have a coordinate system for identifying each of the plurality of cells. The template grid may be modified to indicate a set of chest electrode placement locations on the user.

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.

A detector system for non-invasively detecting exacerbation of heart hypofunction comprises a sensor (102), for example a gyroscope, configured to produce a measurement signal when being in a movement sensing relation with a jugular vein (105) of an individual. The detector system comprises a processing system (101) configured to receive the measurement signal, and a memory system (103) communicatively connected to the processing system. As changes in behavior of jugular vein pressure can be indicative of development of heart hypofunction, the processing system is configured to compare first data stored in the memory system and based on an earlier produced measurement signal to second data based on a later produced measurement signal, and to form indicator data indicative of exacerbation of heart hypofunction based on the comparison between the first data and the second data.

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 utility model discloses a blood-brain synchronous microdialysis sampling device suitable for a freely moving rat under aerosol exposure. The blood-brain synchronous microdialysis sampling device comprises an aerosol generator, an aerosol exposure cavity, a particulate matter concentration monitor, an injection pump, a brain microdialysis probe, a blood microdialysis probe, a double-channel cooling trace collector and an air extracting pump, the brain microdialysis probe is used for being implanted into the brain area of an animal, and the blood microdialysis probe is used for being implanted into the jugular vein of the animal; the injection pump comprises a first Ringer's solution output port and a second Ringer's solution output port; the dual-channel cooling trace collector comprises a first collecting opening and a second collecting opening; and the output ports of the sucking pump, the particulate matter concentration monitor and the aerosol generator are communicated with the hollow cavity. According to the blood-brain synchronous microdialysis sampling device suitable for the freely moving rats under the exposure of the aerosol, the animals are exposed in a nicotine aerosol environment when the animals are sober and freely moving, and the regulation effect on animal neurotransmitters after nicotine inhalation is reflected more truly.

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 discloses a preparation method of a biogenic vein containing a venous valve, and belongs to the technical field of biomedical functions.The preparation method of the biogenic vein containing the venous valve comprises the following steps that firstly, a pig or cattle jugular vein pipeline containing a complete valve is cut, cleaned, disinfected and flushed for use; sequentially carrying out cell lysis, cell digestion and nucleic acid digestion treatment; immersing into a 1 mol / L hydroxylamine sulfate solution to carry out heparin covalent cross-linking; immersing into a treating fluid to obtain a biogenic vein containing a venous valve; wherein the treating fluid is a PBS (Phosphate Buffer Solution) containing 4wt% of hydroxyethyl starch and 0.1 wt% of polyhexamethylene biguanide. According to the preparation method of the biogenic vein containing the venous valve, provided by the invention, the treatment liquid containing 4wt% of hydroxyethyl starch and 0.1 wt% of polyhexamethylene biguanide is introduced in the preparation process, so that the technical problem of insufficient dehydration and bacteriostasis in the background technology is remarkably solved, and meanwhile, the valve functionality of the biogenic vein is remarkably improved.

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.