186 results about "Venous blood" patented technology

The invention discloses a venous thrombosis risk assessment method based on a large language model, and relates to the technical field of medical artificial intelligence, and the method comprises the steps: collecting thoracic surgery diagnosis and treatment data of a patient, carrying out the space-time alignment, generating a standard diagnosis and treatment data flow, and carrying out the homomorphic encryption of the standard diagnosis and treatment data flow, and forming an encrypted patient data package; inputting the encrypted patient data packet into a multi-task large language model, performing feature extraction and semantic coding by a feature coding layer, performing time sequence modeling and risk probability calculation by a risk quantification layer, and outputting a venous thromboembolism risk level of a patient; and performing feature decoupling and potential space mapping on the encrypted patient data packet to obtain thrombus semantic potential features. Through the multi-task large language model, the dual machine learning algorithm and the homomorphic encryption, the accuracy of venous thrombosis risk early warning is improved, and the safety of the risk assessment process is enhanced.

The invention discloses a vein blood oxygen saturation real-time measurement system and method based on an LED light source. The method comprises the steps that 1, a pulse driving circuit outputs pulse voltage to drive LEDs with different wavelengths in a dual-wavelength LED light source to flicker alternately; collecting a photoacoustic signal by an ultrasonic transducer; 2, the ultrasonic signal processing platform receives the collected sound signals and carries out subsequent processing; 3, controlling the ultrasonic transducer to transmit an ultrasonic signal to the same measured part, and receiving an echo signal of the ultrasonic transducer; reconstructing an ultrasonic image of the measured part based on the echo signal; step 4, in the obtained ultrasonic image, positioning a vein to be analyzed and an adjacent artery thereof, and positioning the vein in the ultrasonic image; 5, the arterial oxygen saturation value of the whole body is measured through a finger clamping type pulse oximeter, and quantitative calculation of the venous oxygen saturation is achieved; and step 6, carrying out pixel-level fusion on the oxyhemoglobin saturation information and the ultrasonic image, and realizing visualization on the same frame of ultrasonic image.

The application discloses a lower limb venous thrombosis prevention training device and particularly relates to the field of training devices. The device comprises a support frame, both sides of the bottom of the support frame are provided with placing grooves, a sliding block is slidably connected to the support frame, a limiting groove is fixedly connected with the sliding block and slidably connected to the support frame, two driving racks are symmetrically arranged on the two sides of the sliding block and fixedly connected with the sliding block, two first driving gears are respectively engaged with the corresponding driving racks, each first driving gear is rotatably connected to the support frame, two flexible shoes are symmetrically arranged and each flexible shoe can be detachably connected with the limiting groove and the first driving gear, and a driving assembly can be driven by a user to move the sliding block. The application solves the problem that the existing prevention training device is not suitable for the elderly patients with insufficient muscle strength and improves the initiative of patient training.

The invention provides a stepped air bag control method for preventing venous thrombosis based on infrared detection, and relates to the technical field of medical instrument control, and the method comprises the steps: obtaining the tissue oxygen saturation of at least one monitoring point of a target limb of a target user through a near-infrared sensor; when the target user is a hemiplegic individual, determining a control parameter of the stepped air bag according to the tissue oxygen saturation, and controlling the stepped air bag worn by the target limb to work according to the control parameter, so that the tissue oxygen saturation of the target limb reaches a preset state; the tissue oxygen saturation difference value of the hemiplegic side lower limb and the healthy side lower limb of the target user is smaller than a preset balance threshold value. According to the method provided by the invention, the stepped air bag can be dynamically controlled according to the real-time blood circulation state of the individual, the suitability, the real-time performance and the safety of venous thrombosis prevention of the limbs of the paralyzed individual are improved, and the use requirements of different individuals are met.

The utility model relates to the field of massage leg sleeves, in particular to an air pressure massage leg sleeve for preventing venous thrombosis. According to the technical scheme, side edge connecting belts are arranged on the two sides of a cotton external inflation protective sleeve; the number of the side edge connecting belts is six, and three side edge connecting belts are arranged on the same side. A side edge adhesive tape is arranged at the upper end part of the side edge connecting belt; the side edge connecting belts and the side edge adhesive tapes are arranged into one group, and six groups are arranged in total and are uniformly distributed on two sides. By arranging the main body connection protection structure, adhesion type wrapping work can be conveniently conducted on the whole leg, meanwhile, the heating structure is arranged in the device to conduct internal heating, rapid blood activating work can be achieved on the leg, the venous thrombosis prevention massage efficiency can be conveniently accelerated and improved, the inflation structure is arranged at the front end of the whole device, and the inflation structure is arranged at the back end of the whole device. And finally, the movable rotating structures are arranged on the two sides of the connection inflation structure, so that the protection work of the connection inflation structure is achieved, and the practicability and comfort are enhanced.

To provide a blood purification device that can accurately determine whether a venipuncture has been performed correctly in a patient. [Solution] The blood purification device 1 comprises a blood purifier 3 capable of purifying blood, a blood circuit 2 having an arterial blood circuit 21 with an arterial puncture needle 211 attached to its tip and a venous blood circuit 22 with a venous puncture needle 221 attached to its tip, an impedance measuring unit 5 having an oscillator 53 that applies an AC voltage between an arterial electrode 51 provided on the arterial blood circuit 21 and a venous electrode 52 provided on the venous blood circuit 22, and capable of measuring the frequency characteristics of the impedance between the arterial electrode 51 and the venous electrode 52, and a puncture determination unit 72 that determines whether the patient has been properly punctured based on the measured impedance frequency characteristics, and further comprises a frequency range determination unit 70 that determines the frequency range of the AC voltage applied by the oscillator 53 according to the liquid in the blood circuit 2.

The invention relates to medicine, in particular to gerontology and therapy and can be used for treating sarcopenia in elderly patients.Summary of the invention consists in alternating for 1…2 days the intravenous administration of ozonized 0.9% NaCl solution and major autohemotherapy, namely 500 mL of a 0.9% NaCl solution ozonized with an ozone-oxygen mixture, with an ozone concentration of 5…10 µg / mL, are administered, and major autohemotherapy consists in collecting 300…400 mL of venous blood from the patient, which is ozonized, with an ozone concentration of 15 µg / mL and transfused to the patient, the treatment course includes 8…10 consecutive procedures, then it is extended with minor autohemotherapy, which consists in collecting 5…10 mL of venous blood, which is ozonized, with an ozone concentration of 15 µg / mL and administered intramuscularly every 10th day of alternation and includes 3 consecutive procedures, and the ozonized 0.9% NaCl solution is administered for up to 6…8 weeks.

The application discloses a kind of prevention instruments for deep vein catheter thrombus, belong to thrombus prevention technical field.It includes bottom plate, one end of bottom plate is equipped with deflection block, the bottom plate is equipped with fixed plate behind deflection block, one end of fixed plate is fixedly connected to bottom plate, the other end of fixed plate is equipped with sliding column, one end of sliding column is surface contact with deflection block, the other end of sliding column is equipped with torque amplification assembly on both sides, torque amplification assembly includes first connecting rod, one end of first connecting rod is rotatably connected to the other end of sliding column, second connecting rod is equipped on the other end of first connecting rod, one end of second connecting rod is rotatably connected to the other end of first connecting rod, traction rope is equipped on the other end of second connecting rod, stand is equipped on second connecting rod, one end of stand is connected to bottom plate, the other end of stand is rotatably connected to second connecting rod.This technical scheme is used to improve the prevention effect of venous thrombosis.

This invention discloses an early screening system and method for hyperuricemia based on fingertip blood uric acid detection. The system includes a fingertip blood collection module, a detection module, a data processing module, a storage module, an analysis module, an early warning module, a display module, a communication module, a calibration module, and a power supply module. It accurately collects fingertip blood samples from subjects, obtains blood uric acid concentration data using specific detection equipment, constructs a multi-dimensional analysis model based on clinical characteristic parameters, and determines the optimal diagnostic cutoff value based on ROC curves, achieving rapid and accurate screening for hyperuricemia. The method includes steps such as sample collection, detection, data processing, model analysis, result determination, and early warning. It is simple to operate, fast, and highly accurate, solving the problems of poor compliance and difficulty in grassroots implementation associated with traditional venous blood testing. It is suitable for large-scale population screening and early diagnosis of hyperuricemia in areas with scarce medical resources, and has significant clinical application value and social significance.

The present invention relates to a method by which intravenous fluids, blood or artificial blood containing high levels of mechanically infused dissolved oxygen can be used to maintain appropriate oxygen levels in venous blood to provide short term oxygenation support to a compromised patient or trauma patient. In one aspect, a system and method for oxygenating a biological fluid for a compromised subject or trauma subject in need of oxygenation support to maintain the subject at an appropriate oxygen level is provided, the method comprising: supplying oxygen from an oxygen source; and dissolving an amount of the supplied oxygen into the biological fluid to obtain an oxygen enriched biological fluid.

The utility model relates to the technical field of internal fistula exercisers, in particular to an internal arteriovenous fistula exerciser which comprises an elbow seat, an air bag is arranged on the upper surface of the elbow seat, a grabbing mechanism convenient for a patient to grab and exercise internal fistula is arranged at the front end of the elbow seat, a telescopic groove is formed in the front end of the elbow seat, a telescopic sleeve is inserted into the telescopic groove in a sliding mode, and the telescopic sleeve is connected with the elbow seat. And the connecting frame is inserted into the front end of the telescopic sleeve in a sliding manner. According to the internal arteriovenous fistula exerciser, a one-way air inlet valve is further arranged on an air bag, so that an inflatable cuff is conveniently controlled to expand to extrude arms to promote vasodilation, arteriovenous blood deposition of upper limbs is achieved, and therefore the filling degree of internal fistula blood vessels is increased, and a telescopic sleeve connected to the front end of an elbow seat and a connecting frame are connected with an exerciser body through a rotating rod; meanwhile, the four-finger fixing belt and the thumb fixing belt are arranged on the upper side and the lower side of the exerciser main body, so that patients with different arm lengths can conveniently hold the exerciser main body for exercise.

The utility model belongs to the technical field of medical teaching models, and particularly discloses a simulation limb arteriovenous hemorrhage simulation device which comprises a simulation blood storage device and a simulation limb, a blood pressure circulation control box is arranged between the simulation blood storage device and the simulation limb, and the simulation blood storage device is connected with the blood pressure circulation control box through a liquid extraction pipe. An artery tube set used for simulating artery blood supply and blood overflow and a vein tube set used for simulating vein blood supply and blood overflow are arranged in the simulation limb, and a liquid outlet of the blood pressure circulation control box is communicated with a backflow opening of the simulation blood storage device and an artery blood outlet in the simulation limb through the artery tube set. Or the liquid outlet of the blood pressure circulation control box is communicated with the backflow port of the simulation blood storage device and the vein bleeding port on the simulation limb through the vein tube group. According to the utility model, the artery tube group and the vein tube group are arranged in the simulation limb, so that blood pressure changes in different states, including arterial high-pressure bleeding, vein low-pressure errhysis and other scenes, are simulated, and the sense of reality of training is enhanced.

The utility model provides an ankle pump exercise training device which comprises a base, a supporting pedal, a flexion and extension assembly, a swing assembly and a rotary connecting piece, a leg placing area is arranged at the top of the base, a first fixing piece is arranged on the base, and a second fixing piece is arranged on the supporting pedal; the fixed end of the swing assembly is fixed to the base, the swing output end of the swing assembly is fixedly connected with the rotary connecting piece, and the swing assembly drives the rotary connecting piece to rotate relative to the base. The rotary connecting piece is rotationally connected with the flexion and extension assembly, a flexion and extension output shaft of the flexion and extension assembly is fixedly connected with the supporting pedal, the flexion and extension output shaft of the flexion and extension assembly is rotationally connected with the rotary connecting piece, the fixed end of the flexion and extension assembly is fixedly connected with the rotary connecting piece, and the flexion and extension assembly drives the supporting pedal to rotate relative to the rotary connecting piece. The training mode of the ankle pump movement training device is more comprehensive and effective, and the technical effects of standardizing ankle pump movement of a patient and effectively preventing venous thrombosis can be achieved.

The utility model relates to the field of medical supplies, and discloses an anti-backflow blood taking needle which comprises a vein blood taking end, a blood taking tube puncture end and a hose for connecting the vein blood taking end and the blood taking tube puncture end, a non-return piece is arranged at the joint of the blood taking tube puncture end and the hose, a silica gel sheet or a silica gel plug is arranged in the non-return piece, and the silica gel sheet or the silica gel plug is connected with the hose. The blood collection tube is used for limiting blood to flow only in the direction from the vein blood collection end to the blood collection tube puncture end. According to the anti-backflow blood taking needle, the non-return piece is arranged between the puncture end of the blood taking tube and the hose to automatically open or close the flow channel, so that blood is effectively prevented from flowing back into the vein of the human body from the blood taking tube in the vein blood taking process, the safety of a person with blood taken is guaranteed, the structure is simple, and the cost is low.

The invention discloses a long-term hemodialysis access device integrated with a free floating venous catheter. The long-term hemodialysis access device comprises a dialyzer body, an arterial blood drawing mechanism, a venous blood injection mechanism, a form adjusting mechanism and a skin heating mechanism. The dialyzer main body is provided with a blood inlet, a substance exchange cavity and a blood outlet, and the blood inlet, the substance exchange cavity and the blood outlet are communicated in sequence; the arterial blood drawing mechanism is mounted at the blood inlet, and the output end of the arterial blood drawing mechanism is communicated with the blood inlet; the venous blood injection mechanism is mounted at the blood outlet; the input end of the venous blood injection mechanism is communicated with the blood outlet; the form adjusting mechanism is mounted on the dialyzer main body; the number of the form adjusting mechanisms is two. The skin heating mechanism is detachably mounted on the dialyzer main body; the skin heating mechanism is used for thermally radiating human skin; by integrating the form adjusting mechanism and the skin heating mechanism, it is guaranteed that blood can float freely, meanwhile, the injection environment of the human skin is improved, and hemodialysis is improved.

The utility model relates to a disposable arteriovenous blood taking needle which comprises a transfer block, an arterial needle head, a venous needle head, a blood transfusion tube, a blood outlet tube and embolism blocks, the embolism blocks are sleeved on the outer side faces of the arterial needle head and the venous needle head, the arterial needle head and the venous needle head are jointly connected with the blood transfusion tube, and the transfer block is jointly connected with the blood transfusion tube and the blood outlet tube. Under the combined action of an expansion piece, a stress plate, a partition ring, a partition piece and a butt joint block in the transfer block, the blood transfusion tube and the blood outlet tube in the transfer block can be connected only once, and then irreversible damage can be generated at the joint of the blood transfusion tube and the blood outlet tube after use; meanwhile, a deformation block, a rubber plug, a solid film and a limiting opening are arranged in the embolism block, so that the artery needle head and the vein needle head can deform, the needle heads are blocked, and repeated use of the blood taking needle can be effectively prevented.

The invention discloses an anastomosis instrument for connecting multiple lymphatic vessels and blood vessels. The anastomosis instrument comprises a blood vessel connecting piece and a plurality of lymphatic connecting tubes. According to the integrated anastomosis instrument, the multiple lymphatic vessels can be connected to the lymphatic connecting tubes respectively through the arrangement of the integrated anastomosis instrument with the multiple lymphatic connecting tubes, and the lymphatic vessels are finally guided into the same vein blood vessel through the through holes; therefore, an efficient connection mode of multiple lymphatic vessels and a single blood vessel is realized, the surgical operation is greatly simplified, the surgical time is shortened, the surgical difficulty is greatly reduced, and the risks of postoperative bleeding, inflammation and vascular stenosis are reduced; in addition, due to the establishment of a plurality of drainage channels, the total drainage efficiency of lymph is effectively improved, and the device is more suitable for clinical conditions with large lymphatic load.

FIELD: molecular biology.SUBSTANCE: method for predicting a high risk of adverse outcome in a patient with purulent lung disease (PLD) infected with gram-negative bacteria of the Klebsiella pneumoniae species is described. The method involves isolating DNA from peripheral venous blood and determining variants of the AQP4 rs1058424 gene. When the AQP4 rs1058424 AA genotype is detected in a patient with PLD and the presence of signs of Klebsiella pneumoniae infection, a high risk of death is determined.EFFECT: based on the determination of the AQP4 rs1058424 genotype for patients with PLD and identified gram-negative bacteria, it becomes possible to fairly early divide hospitalized patients with purulent infection into high-risk and low-risk groups for a fatal outcome.1 cl, 4 ex

This invention discloses a method and system for simultaneous analysis of multiple lipid indicators in fingertip capillary blood, relating to the field of chemical analysis. The method includes S1: micro-sample pretreatment of fingertip blood; S1.5: sample matrix interference pretreatment; S2: multi-channel parallel specific reaction; S3: multi-band spectral synchronous detection; S4: machine learning intelligent calibration and analysis; and S5: result output and quality control verification. This method and system achieves simultaneous detection of five core lipid indicators in fingertip blood samples in a short time, with low deviation and cross-interference rates between the detection results and venous blood biochemical detection, and high matrix interference inhibition rate. It also possesses advantages of portability, speed, and accuracy, solving the problems of low detection efficiency, limited applicability, and matrix interference affecting accuracy in existing technologies.

A system for determining a global hypoperfusion index (GHI) includes an arterial blood pressure sensor, a ventricular blood pressure sensor, an oximetry module, and an integrated hardware unit including a system processor and a system memory. The system memory includes instructions that cause the system to receive arterial hemodynamic data, ventricular hemodynamic data, and blood oxygen saturation data. One or more right ventricular pressure features, one or more pulmonary artery pressure features, one or more cardiac output parameters, and one or more venous oxygen saturation parameters are derived from the arterial hemodynamic data, the ventricular hemodynamic data, and the blood oxygen saturation data. The GHI is derived by using a predictive decision model based upon the one or more right ventricular pressure features, the one or more pulmonary artery features, the one or more cardiac output parameters, and the one or more venous oxygen saturation parameters.

This blood purification apparatus comprises: a first electrode that is in contact with an arterial blood line connected to a blood purifier; a second electrode that is in contact with a venous blood line connected to the blood purifier; and a measurement unit that measures the impedance between the first electrode and the second electrode. At least one of the first electrode and the second electrode is provided with an electrode unit (60). The electrode unit (60) includes a reception part (62) in which a tube (58) provided in the arterial blood line or the venous blood line is disposed. The reception part (62) is provided with: a contact surface (64) that is in contact with the outer surface of the tube (58); and an electrode part (66) provided along the contact surface (64).

The application discloses a kit for predicting the curative effect of immunotherapy on prostate cancer patients, which comprises reagent A, reagent B, reagent C, reagent D, reagent E and reagent F; the reagent A is a PBS buffer solution; the reagent B is a lymphocyte separation medium; the reagent C is a red blood cell lysis solution; the reagent D is a cell surface CD3 flow antibody; the reagent E is a cell surface CD19 flow antibody; and the reagent F is a 1% polyformaldehyde solution in terms of mass percentage concentration. The application further discloses an application method of the kit, which comprises the following steps: collecting venous blood of prostate cancer patients; extracting peripheral blood mononuclear cells (PBMC) in the venous blood of the prostate cancer patients; incubating the flow antibody; and performing flow cytometry analysis. The kit and the application thereof are simple and fast, non-invasive, repeatable, low in cost and short in detection time.

Vascular blood flow modulation is disclosed using metallic compliance-enhancement devices that contain a sealed volume of fluid. The device includes a first elongated inflatable nitinol balloon and a second elongated inflatable nitinol balloon, each having an outer sealed terminus and an inner open fluid port, and a nitinol connector tube that fluidly couples the balloons and has a diameter smaller than the inflated diameters of the balloons. The first balloon is positioned within an arterial vessel and the second balloon is positioned within a venous vessel, with the connector tube spanning between the vessels. During systole, arterial pressure compresses the first balloon to drive fluid through the connector tube into the second balloon, thereby expanding the second balloon and increasing venous blood flow. Cyclic systolic and diastolic pressure variations cause fluid to shuttle between the balloons, producing a compliance-enhancing effect.

The utility model discloses a leg circumference measuring device for a patient with venous thrombosis between lower limb vein muscles, which comprises a reference sheet with an inward concave structure attached to patella; the fixing band is arranged on the outer edge of the reference sheet and extends in the radial direction of the reference sheet; the hook-and-loop fastener is arranged on the outer side surface of the reference sheet and is bonded with the fixing band after the fixing band encircles the knee bend by a circle; the number of the scaleplates is two, and the two scaleplates are arranged on the upper side and the lower side of the reference sheet respectively and are symmetrical about the fixing band. The number of the measuring scale assemblies is two, and the measuring scale assemblies are arranged at the positions 10 cm and 15 cm away from the two rulers respectively. By means of the scheme, when the leg circumference of a patient is measured, operation can be simplified, and the accuracy of measured values can be effectively guaranteed.

The application relates to the technical field of medical bloodletting devices, and discloses a safe and sealed venous bloodletting device which comprises an electric pump, a fixing seat connected with the air inlet of the electric pump through a hose, a constant-pressure cavity arranged in the fixing seat, the constant-pressure cavity being communicated with the air inlet of the electric pump, a needle tube detachably mounted on the fixing seat, an open end of the needle tube being communicated with the constant-pressure cavity, a three-way joint arranged at the liquid suction end of the needle tube, two one-way valves respectively mounted at the other two openings of the three-way joint, one of the one-way valves being connected with a blood storage bag through a hose, and the other one-way valve being connected with a needle through a hose. The electric pump intermittently sucks and fills air, continuous blood drawing and blood discharging are realized, the blood of a patient is delivered into the blood storage bag, the process is simple in operation, is not prone to professional exposure, a smaller needle is adopted, the patient has lower discomfort, the bloodletting speed can be adjusted, the application range is wide, the consumables are convenient to replace, the cost is low, and the clinical practicability is high.

This invention relates to the field of gene polymorphism detection technology and discloses a venous thrombosis risk gene detection kit based on LAMP technology. The kit includes primers and probes for detecting polymorphic sites in venous thrombosis risk genes, detection reaction system components, reagent A and reagent B, positive control A, positive control B, and a negative control. Reagent A and reagent B respectively contain matched primers and probes and the detection reaction system components. Reagent A is a 4G, C, AAG, G, or T reaction tube, and reagent B is a corresponding 5G, T, del, A, or C reaction tube. This invention avoids interference between primers and probes by physically isolating reactions of different nucleic acid sequences in independent reagents A and B. Simultaneously, it utilizes polymerase and cresol red to convert changes in system components into color changes, achieving simultaneous visualization and accurate genotyping of multi-target amplification signals without instrument assistance.

Systems and methods can remove material of interest, including blood clots, from a body region, including but not limited to the circulatory system for the treatment of pulmonary embolism (PE), deep vein thrombosis (DVT), cerebrovascular embolism, and other vascular occlusions.

The invention belongs to the technical field of medical diagnosis assistance, and discloses a blood vessel detection auxiliary pressurization device for infant intravenous injection, which comprises a main controller, a support rod, an auxiliary pressurization mechanism and an auxiliary detection mechanism. The movable end of a supporting rod on the side face of the main controller is connected with an auxiliary pressurizing mechanism which comprises an arc-shaped plate for bearing the arm of a child patient, a pressurizing air bag is arranged on the inner side of the arc-shaped plate, and ventilation of the air bag can block venous blood backflow to expose blood vessels, so that a clear object is provided for blood vessel detection. The movable end of the top movable frame of the main controller is connected with the auxiliary detection mechanism to assist blood vessel detection. According to the device, the contact area with the skin is increased through the pressurizing air bag, tightening marks and compression injuries are reduced, child patient conflict is reduced, detection continuity is guaranteed, blood vessel pressurizing comfort is improved, the blood vessel detection effect is effectively guaranteed, and a reliable blood vessel positioning basis is provided for subsequent infant intravenous injection.

This invention discloses a method for blood collection from the right adrenal vein, belonging to the field of venous blood collection methods. The method includes the following steps: providing an RH catheter, which is a dedicated catheter for hepatic artery angiography, with its tip bent 180° to form a plane, and its tip bent perpendicularly to this plane at 90°; inserting the RH catheter through the right femoral vein, advancing it to form a loop in the right atrium, and then pulling it back to the inferior vena cava; adjusting the direction of the RH catheter, using its three-dimensional curved portion to hook onto the opening of the right adrenal vein, thereby inserting it into the right adrenal vein; injecting contrast agent to confirm that the tip of the RH catheter is located within the right adrenal vein; collecting a blood sample from the right adrenal vein through the RH catheter, with a single blood sample volume of 12 ml; after blood collection, performing post-confirmation angiography to verify whether the RH catheter is located within the target vein. This invention can significantly improve the success rate of right-side catheter insertion and blood collection efficiency, while reducing costs and facilitating operation.