53 results about "HEART THROBBING" patented technology

The present invention provides devices for beating heart surgery. The device separates the valve and the surrounding area from the rest of the vascular system so the operation procedure can be carried out while the heart is beating during the entire course of the procedure. This is made possible through a temporary valve (170) and two coronary artery conducts (130, 140) incorporated in the balloon-catheter system. The system provides better view and ease of operation and thus, reduces surgery related complication and pains.

Methods and devices for repairing a cardiac valve. A minimally invasive procedure includes creating an access in the apex region of the heart through which one or more instruments may be inserted. The device can implant artificial heart valve chordae tendineae into cardiac valve leaflet tissues to restore proper leaflet function and prevent reperfusion. The device punctures the apex of the heart and travels through the ventricle. The tip of the device rests on the defective valve and punctures the valve leaflet. A suture or a suture / guide wire combination is inserted, securing the top of the leaflet to the apex of the heart. A resilient element or shock absorber mechanism adjacent to the outside of the apex of the heart minimizes the linear travel of the device in response to the beating of the heart or opening / closing of the valve.

An organ manipulator including at least one suction member or adhesive disc mounted to a compliant joint, a flexible locking arm for mounting such suction member or compliant joint, and a method for retracting and suspending an organ in a retracted position using suction (or adhesive force) so that the organ is free to move normally (e.g., to beat or undergo other limited-amplitude motion) in at least the vertical direction during both steps. In preferred embodiments, a suction member exerts suction to retract a beating heart and suspend it in a retracted position during surgery. As the retracted heart beats, the compliant joint allows it to expand and contract freely (and otherwise move naturally) at least in the vertical direction so that hemodynamic function is not compromised. The suction member conforms or can be conformed to the organ anatomy, and its inner surface is preferably smooth and lined with absorbent material to improve traction without causing trauma to the organ. The compliant joint can connect the member to an arm which is adjustably mounted to a sternal retractor or operating table. The compliant joint can be a sliding ball joint, a hinged joint, a pin sliding in a slot, a universal joint, a spring assembly, or another compliant element. In preferred embodiments, the method includes the steps of affixing a suction member to a beating heart at a position concentric with the heart's apex, and applying suction to the heart while moving the member to retract the heart such that the heart has freedom to undergo normal beating motion at least in the vertical direction during retraction.

Apparatus and methods are provided for forming a working space on the interior wall of a blood vessel, such as the aorta. The working space is isolated from blood flow and permits creation of an anastomotic hole and subsequent suturing of the hole to form an end-to-side anastomosis, even while the heart is beating. The apparatus comprises tools including inflatable barriers, such as cup-shaped balloons, which engage the inner wall of the blood vessel with minimum trauma and maximum sealing. In a first embodiment, the inflatable barrier is introduced through a penetration at the site of the anastomotic attachment. In a second embodiment, the inflatable barrier is introduced through a second penetration axially spaced-apart from the site of the anastomotic attachment.

The invention relates to a method for detecting the breath force in sleep, relative device and application. Wherein, the invention is characterized in that: it uses pressure micro sensor to obtain the micro signals of heart beat, breath, and body movement in sleep, to input them into computer to be processed to form heart impact diagram; and uses the breath amplitude or its integral value of sleep heart impact diagram to represent breath force state, and uses the said breath amplitude or its integral value as the base. The invention can realize non-invasion detection on target.

The invention discloses a cardiac valve tying rope and a cardiac valve component comprising the same. One end of the cardiac valve tying rope is connected with a cardiac valve implanted in the heart,and the other end of the cardiac valve tying rope is fixed out of the heart; and at least parts of the cardiac valve tying rope are elastic to enable the cardiac valve tying rope to carry out length regulation along with a stress value of the cardiac valve tying rope. The above cardiac valve tying rope can be connected by being adaptive to elasticity required by heart beating, the tying rope can apply fixed tension to the cardiac valve according to the change of an own length so as to prevent the cardiac valve from falling into atriums, meanwhile, the cardiac valve tying rope can be suitable for different tensions in a heart beating process, and a situation that the heart is injured since the tension is overlarge can be avoided.

The invention discloses an intracardiac energy collection device and an implantable electronic medical device, and belongs to the field of medical instruments. The intracardiac energy collection device includes: a shell; a fixing mechanism that is arranged on the shell, and the fixing mechanism is configured to fix the outer shell in the heart cavity so that the shell can move along with beating of the heart; the nano-generator module that is packaged in the shell, and the nano-generator module is configured to output electric energy in response to movement of the shell along with heartbeat; and the power supply management module that is packaged in the shell, and the power supply management module is used for managing the electric energy output by the nano-generator module. The intracardiac energy collection device disclosed by the invention can be implanted into the heart in a minimally invasive intervention operation mode to collect biological mechanical energy generated by cardiacbeat, is small in operation wound, cannot damage the heart, and can effectively avoid infection.

The invention provides an auxiliary electronic stethoscope signal discrimination method based on deep learning. Based on complex sound signals of cardiac beating, useless sound signals are filtered out by using wavelet transform, and noise filtering processing is performed on the heart sound of the cardiac beating signals. Based on different characteristics of each stage of the cardiac beating period, the heart sound signals are segmented, the corresponding acoustic characteristics are extracted and processed through an artificial neural network algorithm so that whether the heart sound signals are normal can be judged, the doctor can be assisted to judge the disease of the patient, the better denoising effect can be realized, the accuracy is higher and the robustness is better. Compared with the conventional electronic stethoscope, the heart sound signals are processed more finely and the more specific and complete result can be obtained, and the doctor can be assisted to perform diagnosis so that the advantages of the method are further highlighted after further development of the future remote medical diagnosis.

The invention relates to an in-vitro simulation device for interventional therapy of heart diseases. The in-vitro simulation device comprises a heart assembly used for simulating the heart of a humanbody and a power part used for simulating the beating frequency and amplitude of the heart. The heart assembly comprises an atrial component and a ventricular component, the atrial component comprisesa left atrium and a right atrium, and the ventricular component comprises a left ventricle and a right ventricle. The left ventricle is communicated with the left atrium and / or the right ventricle iscommunicated with the right atrium, and the left ventricle is provided with a mitral valve and / or the right ventricle is provided with a tricuspid valve; the power component is communicated with theleft ventricle and / or the right ventricle; according to the in-vitro simulation device, opening and closing of the mitral valve and / or the tricuspid valve are / is controlled by simulating the frequencyand amplitude of heart beat of a human body, so that an operator can simulate operation of a mitral valve and / or tricuspid valve treatment operation on the heart assembly by using an interventional medical instrument under the condition of heart beat; and the operation level of medical staff is improved, and research and development staff can conduct experimental study on medical instruments.

The invention discloses a construction method of a mouse ventricular aneurysm model, comprising the following steps: anesthetizing a mouse by inhaling isoflurane without mechanical ventilation; forming a small skin incision in the left chest to expose the intercostal space of the most violent cardiac beating after the mouse enters a relaxed state and does not have respiratory depression and dysphoria; forming a small hole between the ribs by using tissue forceps and hemostatic forceps, opening the pleura and pericardium, and slightly extruding the thorax of the mouse; ligating at a position 4-4.5 mm away from the origin of the coronary artery by adopting an absorbable 6-0 suture; ligating the left anterior descending branch and the half myocardium together; immediately putting the heart into the thoracic cavity after ligation, manually exhausting, and suturing and knotting. According to the method, a simple, repeatable and stable mouse ventricular aneurysm model can be manufactured, the model forming rate is high, the method can be used for researching before ventricular aneurysm formation and researching the internal mechanism of mouse ventricular aneurysm formation under different strains and in different states, and a theoretical basis is provided for treatment and prevention of ventricular aneurysm.

A computer implemented method and system for detecting arrhythmias in cardiac activity are provided. The method is under control of one or more processors configured with specific executable instructions. The method obtains cardiac activity (CA) signals at the electrodes of an implantable medical device (IMD) in connection multiple cardiac beats and with different IMD orientations relative to gravitational force. The method obtains acceleration signatures at a sensor of the IMD that are indicative of heart sounds generated during the cardiac beats. The method obtains device location information at the IMD, with respect to the gravitational force during the cardiac beats. The method groups the acceleration signatures associated with the first and second set of cardiac beats into the corresponding one of first and second posture bins based on the device location information. The method identifies a difference between the acceleration signals in the first posture bin in connection with treating a heart condition.

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.

The invention discloses a heart valve tether and a heart valve assembly with the same. One end of the heart valve tether is connected with a heart valve implanted into a heart, the other end of the heart valve tether is fixed outside the heart, the heart valve tether is made of an elastic material, and the strain of the elastic material is 6%-12% within the stress range not larger than 20 N. The heart valve tether can adapt to elastic connection required by heart beating, can apply fixed tension to the heart valve according to the change of the length of the tether, prevent the heart valve from falling into the atrium, can adapt to tension with different magnitudes in the heart beating process, and prevent damage to the heart due to the fact that the tension is too large.

The invention discloses a portable heartbeat recorder for monitoring heartbeat of a critical patient. The portable heartbeat recorder comprises a damp-proof shell and fixing blocks, wherein a second device shell is mounted in the damp-proof shell, first grooves are formed in the two ends of the inner part of the second device shell, and first guide rods are uniformly and vertically mounted at thebottom ends of the inner parts of the first grooves; and a first sliding block is arranged in the middle of the outer side of each first guide rod, first springs are arranged on the outer sides of thefirst guide rods at the top ends and the bottom ends of the first sliding blocks correspondingly, and third springs are uniformly mounted at one ends close to the first guide rods, in the first sliding blocks. According to the portable heartbeat recorder for monitoring the heartbeat of the critical patient, a first pull rod is driven by a second pull rod to move out from a first device shell, besides, after the first guide rods rotate to set positions, the damp-proof shell is assisted to move through universal wheels, and therefore, the portable heartbeat recorder can move more conveniently in the using process.

The invention relates to a novel peak extraction method for heart rate estimation. During the human heartbeats, minute vibration parallel to the axis of a spine of the human body can be generated, anda high-precision angle sensor is used for measuring the fine body pulsation which is caused by the human heartbeats; and the heart rate is the change period which is obtained through filter processing of electrical signals by using the sensor. The high-precision single-axis inclination sensor is installed at the position, near the human chest, of the bottom of an ordinary mattress so as to recordvibration and breathing movement of the heart, the inclination sensor can be used for acquiring BCG data, and detection of the maximum difference between locally adjacent wave peaks and troughs is corresponding to heartbeat detection of a BCG signal peak mode of a single heartbeat; and multiple times of judgment is performed so as to estimate the heart rate. The novel peak extraction method is not affected easily by the mood and emotion of a subject, tests and data record can be performed under the condition of no notices to the subject, early detection of heart diseases is facilitated through feature extraction and matching of a large amount of data about the heart rate.

A simulated living entity (SLE) HAS a body formed of cushioned material, a contact area on an surface of the body, a heating panel under the contact area, a microphone positioned proximate one end of the exposed surface, a speaker positioned proximate the microphone, a heartbeat simulator, a breath simulator proximate the microphone and speaker, and a control system within the body comprising a microprocessor, a coupled data repository, a power supply, wireless communication circuitry, and a digital bus. The heating panel heats the contact area, the heartbeat simulator provides feeling and sound of a beating heart, the breath simulator provides air intake and exhaust, and the speaker provides sounds of a person sleeping, synchronized with the breath simulator.

A method and a tomography unit are disclosed for taking tomographic pictures of a patient's beating heart, in particular X-ray CT pictures. In such a method and tomography unit, only detector data or image data of a portion of the cardiac phase from one or more heart beats is used for taking a picture. Further, at least one pressure signal, produced by the mechanical cardiac pulse and varying temporally with the cardiac cycle, is used for determining the cardiac phase.

The invention discloses an auscultation device suitable for the heart and an auscultation method of the auscultation device. The auscultation device suitable for the heart comprises a data conversionconnector and at least one detection component which are connected together through a plurality of transmission lines, wherein the transmission lines are converged into a bus through the data conversion connector, the bus is connected with data display equipment, the data display equipment can display detection data in a chart form, each detection component comprises a plurality of folding panelsarranged in a mounting shell, a contact layer is arranged on the lower end face of the mounting shell and seals the mounting shell, the folding panels are mounted in the mounting shell in a linear array mode, two magnetic blocks are symmetrically arranged on the inner wall of the mounting shell, electromagnetic coils are arranged in the multiple folding panels, the two ends of each electromagneticcoil are connected with the transmission lines through connecting lines respectively, the folding panels are folded in a Z-shaped mode, bonding parts are arranged at the two ends of each folding panel, and the bonding parts are bonded to the inner side face of the contact layer and the mounting shell respectively. According to the invention, the heartbeat frequency is accurately detected by utilizing the conversion of a current signal and a heart rate detection data signal.

The invention provides a heart rate variability detection method based on a smart phone camera. According to the method, a finger is attached to a camera of the smart phone, a flash lamp of the smart phone is turned on, the camera is used for shooting a video for a period of time, then a video signal is processed, and a pulse wave signal can be extracted from the video signal. The principle of the method is very similar to that of photoelectric volume pulse waves. When the heart is contracted, the small artery of the fingertip is hyperemia, the light absorption is strong, and the image is dark; when the heart is diastolic, blood of the small artery of the fingertip flows back, light absorption is weak, and the image is bright. Therefore, the brightness change of the image reflects the blood volume change when the heart beats, and a time sequence pulse wave signal can be obtained by calculating a brightness value for each frame of image. And time domain peak detection or spectrum analysis can be carried out on the wave signal to calculate a heart rate value. The feature points of the pulse waves are further analyzed, the time interval of each heartbeat is calculated, and then heart rate variability analysis can be conducted.

A non-contact measurement of zebrafish heart rate that is less damaging to the organism, more stable and more precise. The GFP fluorescent protein in the genetically labeled zebrafish heart emits a fluorescent signal when illuminated by a laser corresponding to the excitation wavelength. The fluorescence signal (507 nm) was collected by using an inverted microscope equipped with a filter to filter out the excitation light signal (488 nm), and a high-speed CCD camera was used to collect heartbeat images over a period of time to form a video. The obtained video is extracted frame by frame and the area of ​​the difference area between frames is statistically drawn to obtain the variation curve of the difference over time. The heart beat cycle is obtained by counting the average of the average interval frames of peaks and the average interval of troughs, and the heartbeat frequency can be obtained by using the known video frame rate. This method has important application potential in biological measurement, biological in vivo microscopic imaging and so on.

The invention discloses an artery intracavity ultrasonic imaging method. The withdrawing speed of a probe is determined according to relative speed change data between a target artery section and an ultrasonic probe when the ultrasonic probe is static, so that the influence of the movement process of the artery cavity along with the heartbeat on the withdrawing image acquisition process of the probe can be reduced; loss of useful data can be avoided while repeated imaging is avoided; an appropriate number of arterial cavity images are enabled to be acquired; the occurrence of image distortion is avoided; the accuracy of withdrawing image acquisition is improved, so that a reliable length value is provided for an arterial intervention doctor in the arterial intervention treatment process, and the accuracy of the arterial lesion length measured according to artery intracavity ultrasonic imaging is improved; and the diagnosis and treatment effect can be effectively improved. The invention also discloses an artery intracavity ultrasonic imaging device, computer equipment, a computer readable storage medium and an artery intracavity ultrasonic imaging system, which have the beneficial effects.

The invention discloses an atrial fibrillation demonstration model in the technical field of heartbeat models, which comprises a ventricular cavity cover, a closed cavity with a ventricular shape outside, a plurality of ventricular elastic strips uniformly and fixedly connected to the inner wall, a ventricular limiting shaft fixed inside, a ventricular contraction and expansion wheel rotatably mounted on the ventricular limiting shaft, and a ventricular contraction and expansion wheel rotatably mounted on the ventricular contraction and expansion wheel. The other ends of the ventricular elastic strips are fixedly connected with the ventricular contraction and expansion wheel, the rhythm of the heartbeat can be simulated, contraction and expansion of the ventricle and the atrium of the heartbeat can be displayed, and the device is specially used for displaying the rhythm of the atrial fibrillation, is used for simulating the heartbeat of different rhythms, and can perform visual simulation display on the atrial fibrillation. The heartbeat rhythm during arrhythmia can be displayed through various different atrial and ventricular beating rhythms, meanwhile, beating simulation can be conducted according to different atrial and ventricular proportions, manufacturing is easier, displaying is more visual, and carrying is more convenient.

A real-time monitoring variable-frequency cardiotachometer comprises a shell, a circuit board, a heart beat frequency collector, a crystal oscillator, a wireless communication module, a switch, a controller and a power supply. The real-time monitoring variable-frequency cardiotachometer can monitor and analyze the heart rate of a human body more accurately in real time while greatly reducing the burden of heart rate acquisition personnel; meanwhile, detection data is reported to a server regularly based on a wireless communication technology, the real-time performance is good, the accuracy ishigh, the data communication is stable and reliable, the cost is low, the influence of indoor and outdoor factors, site change and environment change is avoided, and large-scale or multi-crowd synchronous online monitoring can be realized; and the data related to heart rate change research can be conveniently provided for large data required by epidemic situation prevention monitoring and distribution control collection, such as major epidemic situations, natural disasters, emergencies and the like.