31 results about "HEART THROBBING" patented technology

The present invention discloses a cardiopulmonary coupling quantification method and system based on multimodal coupling analysis, which relates to the technical field of electrocardiogram signal processing. The method comprises the following steps: collecting electrocardiogram (ECG) signals and respiratory signals of a subject; extracting a heart beat interval (R-R) interval time series from the collected ECG signals; decomposing the R-R interval time series and the respiratory signal using variational mode decomposition to obtain intrinsic mode functions (IMFs) of the two time series; selecting the IMF with the largest power as the dominant IMF among all IMFs of the respiratory signal; selecting the IMF with the frequency matching the dominant IMF of the respiratory signal among the IMFs of the R-R signal; calculating the synchronization index between the dominant IMF of the respiratory signal and the frequency matching IMF of the R-R sequence by using the instantaneous phase difference between the two; and finally, quantifying the instantaneous magnitude of RSA by calculating the power of the frequency matching IMF of the R-R interval sequence during its strong synchronization period.

The invention relates to the technical field of medical equipment, in particular to heart valve function testing equipment which comprises a support and a fixing plate, the support is fixed, and the fixing plate is installed on the support; the heart valve testing device further comprises a testing device and a water pumping device, the testing device is installed on the support, and the testing device is used for being matched with the water pumping device to test the function and the service life of a heart valve. The water pumping device is installed on one side of the testing device and used for pumping water into the testing device in a circulating mode so as to simulate heart blood flowing, and then the function of the heart valve is tested. Common water flow is simulated into blood pumped by heart beating through the extrusion device, so that the blood can be opened or closed along with flowing of the water flow, the test is completed, traditional manual test can be replaced by adopting the mode, and the test efficiency is improved. When the service life of the heart valve is tested through spot check, full-automatic testing and counting can be achieved, and therefore a large amount of time and manpower are saved.

Described herein are methods and apparatus for implanting grafts to leaflets for cardiac procedures that are performed minimally-invasively while the heart is beating. The graft elongates, reinforces, and patches the leaflet. In certain disclosed examples, the graft is secured to the atrium or ventricle side of the leaflet with an artificial cord implanted on an edge of the graft to improve coaptation. In some disclosed examples, the graft is secured to both leaflets to enable an edge-to-edge procedure similar to the Alfieri technique. Some examples of the disclosed methods including introducing the graft into the ventricle and guiding it into place using artificial cords previously implanted in the leaflet.

Disclosed herein are minimally invasive systems and methods for performing an edge to edge repair of a heart valve on a beating heart of a patient. One or more sutures are inserted into a plurality of leaflets of the heart valve while the heart is beating through a minimally invasive access. The sutures can be threaded through a suture crimp that is advanced to the leaflets. A movable gate on the suture crimp can be actuated to secure the sutures at an appropriate tension to maintain the leaflets in a coapted position.

The application provides an artificial bionic heart control system and relates to the technical field of medical devices.The method comprises the following steps: acquiring a body activity parameter, wherein the activity parameter is used for representing a real-time condition of body activity of a user of the bionic heart; determining a target activity level according to the body activity parameter, wherein the target activity level is used for representing the intensity of the current body activity condition; multiplying or dividing the current speed of the artificial bionic heart by a preset adjustment coefficient to obtain a target speed according to the target activity level; and controlling the artificial bionic heart to operate at the target speed.The application adjusts the beating speed of the artificial bionic heart installed by the user in real time to adapt to the different blood supply requirements of the human body under different conditions.

The present invention discloses a method and a terminal for simulating heartbeats based on example shape matching and feature driving, which reconstruct a three-dimensional heart model; input an electrocardiogram signal, extract features from the electrocardiogram signal by using a slope threshold method to obtain electrocardiogram feature data, and use the electrocardiogram feature data to drive the heartbeat of the three-dimensional heart model; use a method based on example shape matching to simulate the deformation that occurs during the heartbeat of the heart; use a feature-driven method to make the three-dimensional heart model continuously repeat the process of example shape matching; and construct a heartbeat simulation system. The present invention uses the methods of example-based shape matching and feature driving to simulate the deformation during the heart movement process, while taking into account the realistic simulation of the heartbeat, increases the control of the movement state within the cardiac cycle, realizes personalized simulation of the heartbeat, and meets the real-time performance and realism of the heartbeat simulation.

Annuloplasty rings that are size-adjustable after implant and which facilitate deployment and reduce long-term complications. The rings each have a hollow circumference with a cinching element extending therethrough whose length is controlled remotely via a deployment system handle. The ring may be anchored to the annulus and then the size adjusted while the heart beats and under visualization to minimize regurgitation. The cinching element may be a loop of metal which is clamped to size within a junction housing to which the deployment system attaches. The rings are especially beneficial for repairing the mitral annulus, and may be saddle shaped with the junction housing located on an anterior side.

Annuloplasty rings that are size-adjustable after implant and which facilitate deployment and reduce long-term complications. The rings each have a hollow support body with a cinching element extending therethrough whose length is controlled remotely via a deployment system handle. The ring may be anchored to the annulus and then the size adjusted while the heart beats and under visualization to minimize regurgitation. The cinching element may be a loop of braided metal cable which cooperates with a junction housing to which the deployment system attaches. The rings are especially beneficial for repairing the mitral annulus, and may be saddle shaped with the junction housing located on an anterior side. The support body may be shape set nitinol tube having cutouts for flexibility, and the cinching element may be a braided nitinol core having a braided polymer exterior. The cinching element may be a complete loop, have one end anchored in the junction housing, or have two free ends extending out of the junction housing.

A pulse discrimination device is configured to receive electrical signals from a plurality of positions of a living body to which a pacing device for outputting a pacing pulse to cause a heart to beat is attached, and is configured to discriminate the pacing pulse included in the electrical signals. The pulse discrimination device includes a differential processor configured to calculate a difference of the electrical signals received from the plurality of positions, a sum processor configured to calculate a sum of the electrical signals received from the plurality of positions, and a pulse discrimination unit configured to discriminate the pacing pulse included in the electrical signals based on the difference obtained by the differential processor and the sum obtained by the sum processor.

The invention relates to the technical field of wearable equipment, in particular to a physiological monitoring pectoral girdle and a control method thereof.The physiological monitoring pectoral girdle comprises a pectoral girdle body, a physiological parameter obtaining module, a position adjusting module, a processor and a feedback module. And the processor is configured to construct points which are equidistant from the heart rate sensors as equidistant coordinate points, analyze the relative orientation of the equidistant coordinate points and a heartbeat check point based on the time difference of the heart rates obtained among the heart rate sensors, and output a position adjustment suggestion of the position adjustment module. In the application, the processor sends the position adjustment suggestion to the feedback module based on the relative position of the heart rate sensor and the optimal heart rate monitoring position, and feeds back the position adjustment suggestion to the user through the feedback module, and the user adjusts the position of the heart rate sensor according to the feedback after obtaining the feedback of the feedback module based on the position adjustment suggestion. And the position of the heart rate sensor is closer to the optimal heart rate monitoring position, so that the heart rate monitoring precision is improved.

Disclosed herein are minimally invasive systems and methods for performing an edge to edge repair of a heart valve on a beating heart of a patient. One or more sutures are inserted into a plurality of leaflets of the heart valve while the heart is beating through a minimally invasive access. The sutures can be threaded through a suture crimp that is advanced to the leaflets. A movable gate on the suture crimp can be actuated to secure the sutures at an appropriate tension to maintain the leaflets in a coapted position.

The invention relates to the technical field of medical teaching simulation, and relates to a bionic cardiac beating simulation device which comprises a programmable controller; a bionic heart; simulating blood; a connecting pipe; and a power mechanism. The invention further relates to a bionic heartbeat simulation method. The method comprises the steps that S1, simulated blood is perfused; s2, the programmable controller applies pulse signals to the stepping electric cylinder, so that the stepping electric cylinder performs stepping rotation once after receiving one pulse signal, and the magnetic piston generates motion force for simulated blood in the cylinder body of the double-acting hydraulic cylinder; s3, a first magnetic switch and a second magnetic switch which are arranged on the cylinder wall of the double-acting hydraulic cylinder provide magnetic piston movement position detection, and position signals are fed back to the programmable controller; and S4, the programmable controller compares the received position signal fed back by the magnetic switch with a preset position signal according to the preset heart beat mode of the disease, and then applies a pulse signal to the stepping electric cylinder to simulate the preset heart beat mode of the disease. And the human heart beating process is reflected in a simulation manner.

A device for performing minimally invasive repair of mitral valve leaflets in a beating heart through the delivery and implantation of artificial chordae tendineae includes a handle for positioning the device into a chest cavity of the patient, a capture assembly adapted to capture a valve leaflet between distal an proximal tip portions, a needle adapted to penetrate the valve leaflet, and a capture confirmation system for verifying capture of the valve leaflet between the distal and proximal tip portions.

The utility model relates to the field of cultural daily necessities, in particular to a bionic heartbeat music box. The bionic heartbeat music box comprises a box body. The sound driving mechanism is mounted in the box body, a mounting plate is mounted at the top end of the sound driving mechanism, and a mounting cavity is formed in the mounting plate; the bionic heart assembly comprises a lower shell, the lower shell is fixedly installed in the installation cavity, a sliding groove is formed in the lower shell, a driving plate is installed in the sliding groove in a sliding mode, a driving block is arranged on the driving plate, an installation piece is arranged on the upper surface of the lower shell and located over the driving plate, and a heart model plate is movably installed on the installation piece; a wedge-shaped block is fixedly installed at the bottom end of the heart model plate, the diagonal plane of the wedge-shaped block is in contact fit with the driving block, a plurality of heart valves are installed on the outer side of the heart model plate, and connecting holes are formed in the heart valves. The bionic heartbeat music box provided by the utility model has the advantages of strong rhythm and good ornamental effect.

The present invention provides a locking and holding device, comprising a base, a locking member rotatably connected to the base, a holding member movably arranged on the base, and an elastic member located between the holding member and the base. The locking member has a self-locking section, and the holding member has a self-locking inclined surface that cooperates with the self-locking section. The locking member is actuated to rotate relative to the base in a direction away from the self-locking inclined surface to a locked state, and the first position of the self-locking section is disengaged from the abutment of the self-locking inclined surface; under the action of the elastic member, the holding member moves on the base until the self-locking inclined surface abuts and remains in the second position of the self-locking section; wherein the curvature radius of the first position is greater than the curvature radius of the second position. The locking and holding device provided by the present invention has a self-locking function, which can ensure that the locking member remains in a locked state for a long time, thereby ensuring the long-term stability and effectiveness of the locking and holding device under continuous heart beating, and helping to maintain the therapeutic effect of the operation.

The present invention discloses a cardiopulmonary coupling feature extraction method and system based on adaptive Fourier decomposition. The method can take into account the dynamics of electrophysiological signals, extract the spectral features of electrophysiological signals and realize the adaptive decomposition of key rhythms. The specific steps are as follows: preprocessing the collected original single-lead electrocardiogram (ECG) signal and respiratory signal; extracting the heart beat interval R-R interval time series from the preprocessed ECG signal; using the adaptive bandwidth Fourier decomposition algorithm to process the respiratory signal time series and the R-R interval time series respectively to obtain the Fourier natural frequency band functions of the above two time series; obtaining the Fourier decomposition coefficients from the analytical form of the Fourier natural frequency band functions of the two time series at different frequencies, and calculating the CPC value based on the Fourier decomposition coefficients of the R-R and respiratory signal time series to construct a cardiopulmonary coupling map; extracting multiple types of cardiopulmonary coupling features based on the cardiopulmonary coupling map.

The present invention proposes a closed-loop vagus nerve stimulation system for depression, wherein an implantable nanogenerator collects heartbeat mechanical energy and converts it into electrical energy; a power management module collects and stores the electrical energy converted by the implantable nanogenerator; a heart rate sensor collects heart rate data and transmits it to a feedback microcontroller; the feedback microcontroller receives and identifies abnormal heart rate data generated before or during the onset of depression, triggers a control switch between the power management module and the pulse generator, and the pulse generator outputs the energy stored in the power management module to the vagus nerve stimulation electrode in the form of an electrical pulse; the vagus nerve stimulation electrode electrically stimulates the vagus nerve. The present invention breaks through the technical bottleneck that the existing vagus nerve stimulation technique cannot be stably applied in clinical practice for a long time. On the basis of retaining the advantages of traditional vagus nerve stimulation such as minimally invasive surgery and precise stimulation, a self-powered unit is introduced, and the entire system is directly driven by the heartbeat, which can achieve long-term stable self-driven closed-loop vagus nerve stimulation.

According to the marsupenaeus japonicus heat resistance evaluation method based on the heart rate, after to-be-tested marsupenaeus japonicus is domesticated for one week, the marsupenaeus japonicus is moved into a heartbeat video recording device to track and record the change of the heart rate of And after the heart rate of the prawns recovers to a resting state, testing the high-temperature resistance of the prawns, stopping heating and ending video recording when the heart rate of the prawns starts to be greatly reduced, and finally transferring the prawns into seawater with normal temperature to keep the prawns alive. The method comprises the following steps: analyzing a prawn heartbeat video by adopting a remote photoplethysmograph method, extracting heart rate change data, drawing an Arrhenius curve graph, and calculating an individual heart rate ABT value; and carrying out heart rate test on a plurality of healthy prawn individuals in the group, and calculating the average number of heart rate ABT values as an index of group heat resistance. Compared with the traditional method, the method has the advantages that the temperature rise is stopped and the temperature is returned to keep alive when the heart rate of the prawns is greatly reduced, so that the heat shock injury of the prawns can be reduced, the heat resistance of the prawns can be accurately evaluated, and an important evaluation basis is provided for high-temperature resistance breeding.

This disclosure relates to a method and apparatus for detecting and quantitatively analyzing pulmonary blood flow, an electronic device, and a storage medium, belonging to the field of DR image processing technology. The pulmonary blood flow detection method includes: acquiring left and right lung images corresponding to multiple first DR lung images taken at multiple times during a breath-holding state; determining pulmonary vascular region images corresponding to the multiple left and right lung images respectively; and performing silhouette processing on the multiple left and right lung images corresponding to the pulmonary vascular region images to obtain a pulmonary blood flow image corresponding to heartbeat. Embodiments of this disclosure can realize a pulmonary blood flow image corresponding to heartbeat.

The invention provides a radar control device suitable for non-contact heart rate measurement, and relates to the technical field of magnetic resonance imaging and microwave radar crossing detection. The device comprises a shielding shell, a circuit board is arranged in the shielding shell, and a circuit is arranged in the circuit board; the circuit comprises a sending module, a signal transceiving module and a receiving module, the signal transceiving module is respectively connected in series with the transmitting module and the receiving module; the sending module is used for generating oscillation signals and sending the oscillation signals to the signal receiving and sending module, the signal receiving and sending module is used for sending the oscillation signals outwards and forwarding received external heart rate signals to the receiving module, and the receiving module is used for processing the heart rate signals. The 2.4 GHz radio frequency carrier signals are generated, conditioned and transmitted, and the microstrip antenna is matched, so that the microstrip antenna is controlled in real time, micro-Doppler signals of human chest movement caused by heart beating are captured, and finally accurate heart rate triggering gating signals are provided for heart magnetic resonance imaging.

Methods and systems for controlling pacing pulses delivered to a patient are disclosed. An example method includes monitoring an electrical signal causing the heart of the patient to beat after performing ablation of the heart of the patient. The method may also include determining, with an electronic processor and based on the electrical signal, that an amount of time between consecutive cardiac cycles is greater than a desired value. The method may also include, in response to determining that the amount of time between consecutive cardiac cycles is greater than the desired value, automatically and with the electronic processor, controlling electrodes to deliver pacing pulses to the heart.

The utility model relates to the technical field of stationery commodities, in particular to a pendant for simulating the rhythm of heart beating, which comprises an upper shell and a lower shell, the upper shell and the lower shell are covered to form a shell with a hollow cavity, the shell is provided with a heart-shaped mounting hole, a multi-valve heart model plate is mounted in the mounting hole, and the multi-valve heart model plate is connected with the upper shell and the lower shell. The multiple heart model plates are mutually spliced to form a complete heart model, the bottom of each heart model plate is connected with a transmission mechanism used for driving the heart model plate to jump, each transmission mechanism comprises a pair of gear sets and a connecting plate, the gear sets and the connecting plates are arranged in the hollow cavities, the gear sets are in transmission connection with the connecting plates, one end of each connecting plate abuts against the corresponding gear set, and the other end of each connecting plate abuts against the corresponding gear set. The other end is fixedly connected with the heart model plate; the gear set rotates to drive the connecting plate to do linear reciprocating motion, and the heart model plate is converted and controlled to do lifting motion, so that the heart beating rhythm is simulated; therefore, a unique and creative ornament choice is provided for a wearer, and personal charm and fashion sense are added.

The utility model relates to the technical field of medical instruments for stimulating the heart with current, in particular to a pace-making device. The pace-making device comprises a body, a pulse generator, an atrial electrode and a ventricular electrode, the body is arranged on the atrial septum of the heart of a user, the pulse generator is arranged in the body, the atrial electrode is arranged on the body and makes contact with the atrium of the heart of the user, and the ventricular electrode is arranged on the ventricle of the user. The pulse generator is electrically connected with the atrial electrode and the ventricular electrode and sends pulse signals generated by the pulse generator to the atrial electrode and the ventricular electrode, and the atrial electrode and the ventricular electrode stimulate heartbeat according to the pulse signals. The pace-making device provided by the embodiment of the utility model is directly arranged in the atrial septum of the heart of the user, the injury to the body of the user in the operation process can be reduced, and in addition, the pulse generator is arranged in the body, so that an external power supply does not need to be used for supplying power to the pace-making device.

Annuloplasty rings that are size-adjustable after implant and which facilitate deployment and reduce long-term complications. The rings each have a hollow circumference with a cinching element extending therethrough whose length is controlled remotely via a deployment system handle. The ring may be anchored to the annulus and then the size adjusted while the heart beats and under visualization to minimize regurgitation. The cinching element may be a loop of metal which is clamped to size within a junction housing to which the deployment system attaches. The rings are especially beneficial for repairing the mitral annulus, and may be saddle shaped with the junction housing located on an anterior side.

The present invention provides an interpolation method and system for a dynamic three-dimensional mapping map, including: performing MRI modeling on a target heart to obtain an MRI three-dimensional endocardial model; performing preliminary mapping on the target heart to obtain an inferior vena cava endocardial model; taking the inferior vena cava endocardial model as a reference, translating, rotating and scaling the MRI three-dimensional endocardial model so that the inferior vena cava endocardial model overlaps with the endocardium of the MRI three-dimensional endocardial model; mapping the beating part of the target heart to obtain three mapping points, as well as the coordinates of the beating starting point and the coordinates of the beating end point of the three mapping points; the beating starting point coordinates of the three mapping points form a starting point triangular plane; the beating end point coordinates of the three mapping points form an end point triangular plane; obtaining the first MRI curved surface corresponding to the three mapping points in the MRI three-dimensional endocardial model; interpolating the starting point triangular plane and the end point triangular plane according to the first MRI curved surface. The above scheme improves the accuracy of the model.

The invention provides a multifunctional epicardial attaching device. The device comprises a hydrogel adhesion layer, a porous support layer and a conductive thin film layer which are sequentially arranged from bottom to top; wherein the surface of the hydrogel adhesion layer is provided with a plurality of biological ceramic spines arranged in an array, the biological ceramic spines penetrate through epicardial tissue to detect the ion concentration of heart cells in real time, and the hydrogel adhesion layer and the epicardial tissue are fixedly attached; the porous support layer is used for supporting the hydrogel adhesion layer and the conductive film layer, and the conductive film layer is electrically connected with the biological ceramic spines and used for converting the ion concentration detected by the biological ceramic spines into electric signals and transmitting the electric signals to in-vitro monitoring equipment; a micro cavity is formed in the porous bracket layer, and a first functional sheet and a second functional sheet are arranged in the micro cavity; the first functional piece and the second functional piece can be contacted and separated along with heartbeat and generate electric signals. According to the scheme, long-term, stable, continuous and real-time monitoring of the physiological parameters of the heart can be achieved.

The present application relates to the technical field of medical instruments for stimulating the heart with an electric current, and particularly to a pacing apparatus. The pacing apparatus comprises a main body, a pulse generator, an atrial electrode, and a ventricular electrode. The main body is arranged at the interatrial septum of a user. The pulse generator is arranged in the main body. The atrial electrode is arranged at the main body and is in contact with an atrium of the user. The ventricular electrode is arranged at a ventricle of the user. The pulse generator is configured to be in electrical connection with the atrial electrode and the ventricular electrode and to send pulse signals generated thereby to the atrial electrode and the ventricular electrode. The atrial electrode and the ventricular electrode stimulate the beating of the heart according to the pulse signals. The pacing apparatus provided by embodiments of the present application is directly arranged at the interatrial septum of the user and can reduce damage to the user's body during surgery. Moreover, since the pulse generator is arranged in the main body, there is no need to use an external power supply to supply power to the pacing apparatus.

The present invention discloses a cardiac CT scanning detection method and exposure control method. The method collects, collects statistics, and calculates and analyzes the heartbeat status of each different test person. Based on the heartbeat characteristics of different patients, the heartbeat cycle during scanning is predicted, and the exposure control scheme is automatically selected and adjusted. The method classifies the time fluctuation of the R-R part of the heartbeat cycle and predicts the current cycle time. This method improves the accuracy of the exposure starting point, reduces the exposure time, reduces the radiation dose to the person during the scanning process, and improves the scanning success rate.

The utility model belongs to the field of surgical instruments, and particularly relates to a heart lifting device which comprises a flexible pipe. The end part of the flexible pipe is fixedly connected with a bag body made of an expandable soft material; a three-way valve is fixedly connected to one end, far away from the bag body, of the flexible pipe; one end of the three-way valve is fixedly connected with a drainage pipe; an injector is detachably mounted at the other end of the three-way valve; by arranging the bag body, the flexible pipe, the three-way valve, the drainage pipe and the injector, warm saline water or ice saline water is injected into the bag body through the injector during use, so that the bag body is expanded, by means of the arrangement, good supporting force can be guaranteed, and corresponding adjustment can be conveniently conducted according to the size of the chest, the placing position and the height needing to be lifted; meanwhile, the heart is soft, the problem that hemodynamics is affected due to heart compression is reduced while the heart is lifted, and the possibility that heart beating is affected and pericardial vessels are damaged to cause massive hemorrhage due to heart compression deformation caused by traditional filling gauze or pericardium lifting is reduced.