43 results about "Cardiac impulses" patented technology

The invention provides a non-invasive blood pressure measuring device and a measuring method thereof. In the device, a main machine is provided with a microprocessor connected with an air pressure sensor; a pressurizing band is an inflatable sac-shaped band with air tubes, is connected with the air pressure sensor, is tied on a limb where the flowing of arterial blood of a measured person can be completely blocked after inflation, and is provided with a pulse wave detector which is fixed at a downstream position of the pressurizing band in the arterial blood flowing direction; and the microprocessor processes a plurality of pulse wave amplitudes detected by the pulse wave detector in the gradual increasing process from zero and corresponding pressurizing band pressure thereof in real time so as to determine the systolic pressure, and processes a plurality of pulse delay time in the process from variation to relative invariant of the delay time between the pulse wave and the corresponding pressure AC signal in real time so as to determine the diastolic pressure. The device converts discontinuous events to continuous measurement, avoids unavoidable possible errors caused by the discontinuity of cardiac impulse, and can accurately and non-invasively measure the systolic pressure and the diastolic pressure in blood pressure.

An electrical lead system includes a shaft to which a series of expandable ring electrodes are attached that follows the contour of the vascular or muscular structures of the heart, such as cardiac veins, arteries, atrial appendages and trabeculae, and provides sensing of electrical cardiac impulses, pacing and high voltage shock or defibrillation. The lead system uses a variety of energy sources to stimulate the heart, such as ultrasound, electromagnetic and electric impulses.

The invention discloses a new traditional Chinese medicine combination and a preparation method for hemoptysis treatment; the traditional Chinese medicine combination includes the following raw medicines: semen lepidii, tussilago, the tuber of stemona, cynanchum glaucescens, snakegourd fruit, Chinese arborvitae twig, garden burnet, fritillaria thun-bergli, tabasheer, bamboo juice, almond, purple perilla, platycodon grandiflorum, inula flower, circium japonicum, field thistle, cogongrass rhizome, dalbergia wood and agilawood and the like. The traditional Chinese medicine combination can be prepared into any type of common oral preparation according to conventional traditional Chinese medicine preparation method. The invention can significantly improve the symptoms of hemoptysis, cough, expectoration, shortness of breath, gasping for breath, limbs fatigue, dysphoria, throat dryness and red cheek, cardiac impulse and hot flash, night sweat and diet reduction, and also has definite clinical curative effect, significant curative and quick effect. The traditional Chinese medicine combination has low cost and basically has no toxic and side effect.

The invention relates to a heart disease risk diagnosis method based on a deep convolutional neural network model. The method comprises the following steps: building a heart disease risk prediction model based on a deep convolutional neural network, and carrying out training, learning and testing; acquiring an electrocardiogram and a cardiogram of a user by using a wearable device; comparing the electrocardiogram and the cardiogram of the user, and identifying electrocardiogram feature points and cardiogram feature points of the specific event occurrence time of the cardiac impulse cycle; calculating a time interval value of any two feature points to obtain a plurality of feature values, and calculating a plurality of physiological indexes according to the plurality of feature values; outputting the heart disease risk probability corresponding to the physiological indexes through a DCNN model according to each input physiological index; calculating a heart disease risk comprehensive probability value of the user by adopting a formula; and judging the heart disease risk level of the user according to the heart disease risk comprehensive probability value. According to the invention,the risk probability of cardiac acute diseases of the user can be predicted in real time.

The invention discloses a physiological signal separation and extraction system based on optical fiber sensing. A physiological signal preprocessing module of the physiological signal separation and extraction system is used for sequentially removing direct current components and artifacts from original physiological signals; a respiratory signal separation module is used for obtaining respiratory signals in the physiological signals; a ballistocardiogram model building module is used for building a ballistocardiogram model with noise aliasing; a heartbeat signal extraction module is used for obtaining a cardiac impulse diagram signal. According to the system and the method, effective physiological signals can be separated from aliasing signals with a low signal-to-noise ratio, a heartbeat denoising extraction model is constructed in a matrix iterative decomposition mode, and the signals are reconstructed according to the model, so that the operation complexity is greatly reduced, effective components of the signals are ensured, and thus the demodulation difficulty of the non-contact sensing signal and the system design cost are reduced.

The invention discloses a tumor microvessel self-assembly generation system. The system comprises a tumor microsphere column and a pulsation system; the tumor microsphere column comprises a perfusion column and tumor microspheres located in the perfusion column, and the two ends of the perfusion column are each provided with a micropore filter membrane; the pulsation system comprises a peristaltic pump, a pulse piston pump, a rotating culture support, a liquid storage bottle, an oxygenator, a filter and a buffer bottle; the perfusion column, the liquid storage bottle, the oxygenator and the buffer bottle are sequentially communicated end to end to form a circulating channel. In the working process, the peristaltic pump is started to start to conduct perfusion, a fluid in the buffer bottle forms fluid circulating through a first pulse pipeline, when the pulse piston pump conducts extraction operation, more fluids can swarm into the perfusion column in a pulsed mode to form a pulsed fluid to pass through the perfusion column, then a pulsed fluid caused by cardiac impulse is simulated, and fluid flow and fluid shear force are applied to the tumor microspheres in the perfusion column; oxygen is supplied and carbon dioxide is removed by combining the oxygenator which simulates a lung air exchange device, and then occurrence of the tumor microvessels in a body is finally simulated.

A method for determining cardiac impulse conduction, in particular three-dimensional cardiac impulse conduction, in a patient, comprising: generating an image recording of an area of the body of the patient capturing at least partially electrocardiogram electrodes arranged on the body of the patient by an imaging modality; determining positions of the electrocardiogram electrodes in a system of coordinates assigned to the imaging modality; recording of potential data of some of the electrocardiogram electrodes; and reconstructing cardiac impulse conduction depending on the determined positions of the electrocardiogram electrodes, the image recording and the recording of potential data of the electrocardiogram electrodes, wherein at least one image recording is generated substantially simultaneously with the recording of potential data of the electrocardiogram electrodes or is generated in the period between two recordings of potential data of the electrocardiogram electrodes.

The invention relates to a 3D full-silica gel heart model, which comprises a right atrium, a right ventricle, a coronary sinus, an upper vena cava, a lower vena cava, an anterior ventricular sulcus vein, a posterior ventricular sulcus vein, a cardiac great vein, a cardiac vein, a cardiac posterior vein and a pulmonary artery, and is formed by adopting full-silica gel printing after 3D modeling. The heart model provided by the invention comprises all heart-related vein circulation systems and a complete right heart system, and is an intracavitary anatomy three-dimensional model comprising a right heart system and peripheral main vein vessels and pulmonary artery vessels. By simulating real blood flow and combining cardiac impulse simulation of a pulsating pump, a clinician can obtain the same operation feeling as in-vivo operation of a real patient in operation practice of a pacemaker electrode lead implantation operation and a double-ventricle pacing electrode lead implantation operation.

The invention discloses a cerebral blood flow data display method, a storage medium and terminal equipment, and the method comprises the steps: obtaining cerebral blood flow data of a collection pointin a preset time period, and dividing the collected cerebral blood flow data into a plurality of cerebral blood flow data segments according to an R-R interval; and circularly displaying the cerebralblood flow data segments on a pre-established cerebral blood flow model in sequence so as to dynamically display the cerebral blood flow data in a preset time period through the cerebral blood flow model according to the electrocardio R-R interval. According to the invention, electrocardiosignals and the cerebral blood flow signals are collected in real time, the ultrasonic signals are aligned through the electrocardiosignals, the change condition of blood flow in different blood vessels in the brain is presented along with cardiac impulse, so that the hemodynamic information of the cerebralblood flow can be visually displayed by adding dynamic display of the time dimension in the three-dimensional cerebral blood flow model, the change condition of cerebral blood flow can be convenientlyand dynamically observed by a user, and convenience is brought to use of the user.

The invention discloses an external cardiac compression auxiliary device and a working method thereof. The external cardiac compression auxiliary device comprises a displacement quick device, a pressure quick device, a controller and an external cardiac compression device, the displacement quick device comprises elastic belts and a displacement sensor, a plurality of elastic belts arranged in the circumferential direction and the vertical direction form a net structure, and the displacement sensor is arranged on the elastic belts and connected with the controller; the pressure quick device is arranged on the heart chamber outer pressing device and is connected with the controller; the controller is connected with the heart chamber outer pressing device and drives the heart chamber outer pressing device to act. Cardiac impulse information during pressing is collected in real time through the displacement collecting device, acting force between the pressing device and the heart is detected in real time through the pressure sensor, and the controller receives three input signals of a displacement sensor signal, a pressure sensor signal and an external setting signal so as to drive the external cardiac compression device to act.

The invention discloses biscuits for preventing and treating hypertension, hyperlipidemia and hyperglycemia. According to the technical scheme, the biscuits comprise, by mass, 3 parts of buckwheat powder, 2 parts of kudzuvine root powder, 3 parts of black bean powder, 1 part of black fungus powder and 1 part of hawthorn fruit powder, and sesame oil serves as conditioning liquid. The buckwheat powder, the kudzuvine root powder, the black bean powder, the black fungus powder and the hawthorn fruit powder are compounded and mixed in proportion to serve as raw materials of the biscuits, the sesame oil serves as the conditioning liquid, the raw materials are blended into dough, formation and baking are conducted according to the current biscuit making technology, and then the biscuits are put into plastic bags for sale. Buckwheat improves hyperlipidemia, purifies blood and enables blood vessels to be healthy; kudzuvine roots contain puerarin, can slow down cardiac impulse, enhance myocardial contraction and lower aortic pressure; black beans can promote blood circulation and metabolic capability; black fungi have the effects of cleaning blood, removing toxic materials, resisting to cancer and coagulation and promoting fat decomposition and digestion; hawthorn fruits have the effects of strengthening the heart, resisting to arrhythmics and angina, lowering the blood pressure and expanding blood vessels. It is suitable to eat a small number of the biscuits.