100 results about "Jugular vein" patented technology

A method and device for reducing the damaging effects of a blast or concussive event includes applying pressure to at least one jugular vein to reduce the egress of blood from the cranial cavity during the incidence of the concussive event. Reducing blood out flow from the cranial cavity increases intracranial pressure of the cerebrospinal fluid to reduce the risk of traumatic brain injury and injuries to the spinal column. Reducing blood out flow further increases the intracranial pressure, and thereby increases the pressure of the cochlear fluid, the vitreous humor and the cerebrospinal fluid to thereby reduce the risk of injury to the inner ear, internal structure of the eye and of the spinal column. In addition, increasing intracranial pressure reduces the likelihood of brain injury and any associated loss of olfactory function.

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 relates to the technical field of medical auxiliary equipment, in particular to a subclavian venipuncture auxiliary device which comprises a needle cylinder, and a push rod is slidably connected to the inner wall of the needle cylinder; the limiting sliding block drives one end of the needle tube to slide upwards, then the needle tube moves backwards by a certain distance, the needle tube is moved out of a blood vessel, then when the device is not completely pulled out, the position of the needle tube is adjusted, and the needle tube can be pushed again for puncturing; the guide wire I is limited through the inverted cone block, so that the guide wire I can only slide towards one side; a plurality of indwelling tubes can be integrated together through the catheter assembly, the area of the indwelling tubes is reduced, an inner cavity of the installation shell is divided into a plurality of cavities by triangular partition plates, special-shaped protection blocks in all the cavities can achieve different functions, a plurality of existing catheters are integrated into the inner cavity of the deep jugular vein catheter, the area of the device is reduced, and the device is convenient to use. Therefore, the friction force borne by the device attached to the body surface of the patient is small.

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.

The present invention relates to the technical field of medical devices, and specifically to a fixing device suitable for ECMO treatment pipelines, including a pair of blood vessel binding groups attached to the thigh, a blood vessel fixing group fixed to the bedside and used to support the blood vessel binding group, and a return blood vessel fixing group arranged on the head and neck. By adjusting the position of the card frame on the positioning tube, the tube binding pad, the splint and the positioning tube form an effect of clamping the thigh; then the blood vessel fixing group is fixed to the bedside bed bar, and the tube binding pad is limited by the pad support rod; when the thigh needs to move, just unplug the pressure rod to lift the leg; by pressing the chin pad against the chin, wearing the headband on the top of the head, and then positioning the jugular vein return blood vessel on the side of the neck on the tube sleeve, the jugular vein return blood vessel and the neck clamp form an integral state, which will be synchronized with the deflection of the neck to avoid loosening of the connecting pipe.

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 invention relates to a method for detecting dicyclanil content in sheep plasma by HPLC (high performance liquid chromatography), which is applied to the field of HPLC determination, and comprises the following steps: selecting 12 healthy sheep, randomly dividing the sheep into a dicyclanil emulsion group and a Clik group which are half in male and half in female, pouring the dicyclanil emulsion group and the Clik group on the back center line according to a dosage of 35mg. Kg <-1 > for administration, sampling blood at jugular vein at different time points, separating the plasma, and determining the content of dicyclanil in the sheep plasma by using the Dicyclanil emulsion group and the Clik group. HPLC is adopted to determine the blood concentration of dicyclanil. A mobile phase is changed into a mixed phase of acetonitrile and water, an obtained chromatographic peak is good in peak performance in a gradient elution mode, the mobile phase does not need to be prepared and can be used after direct ultrasonic treatment, the method is simple and convenient and high in specificity, precision and accuracy are both within an acceptable range, and the method is successfully applied to research on in-vivo pharmacokinetics of sheep and has a wide application prospect. In addition, through cooperation of a driving motor, a small electric push rod and an electric extension rod, when supernatant is sucked, more sufficient supernatant suction can be assisted by inclining a liquid storage test tube and adjusting the position of a liquid transfer test tube.

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 present invention provides a jugular vein blood oxygen monitoring method and device, and a jugular vein blood oxygen monitoring system. The method is implemented based on a jugular vein blood oxygen sensor arranged on the neck of a measured user, and includes: obtaining the circumference information of the neck of the measured user, determining a first distance according to the circumference information, and adjusting the distance between the light source array and the receiver array in the jugular vein blood oxygen sensor to the first distance; controlling the jugular vein blood oxygen sensor to detect the neck of the measured user, and obtaining the light signal data of the receiver array; obtaining the blood flow fluctuation information of the measured user, and determining the filtering frequency band of a preset bandpass filter; filtering the light signal data based on the bandpass filter that determines the filtering frequency band; processing the filtered light signal data based on the Lambert-Beer law to obtain the jugular vein blood oxygen content of the measured user. The present invention can effectively improve the monitoring accuracy while ensuring simplicity.

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.

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 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.