310 results about "Hearts lungs" patented technology

Methods and systems provide an approach to therapy control based on assessment of a patient's cardiopulmonary status. Conditions sensed via sensors of an external respiratory therapy device are used to assess a patient's cardiopulmonary status. The respiratory therapy device sensors may be utilized alone or in combination with other sensors to determine cardiopulmonary status of a patient. Therapy delivered to the patient is controlled based on the cardiopulmonary status assessment. For example, therapy delivered to the patient may be initiated, terminated, and / or modified based on the assessed cardiopulmonary status of the patient. Cardiopulmonary status assessment, therapy control, or both, are performed by an implantable device.

A method for closed-chest cardiac surgical intervention relies on viewing the cardiac region through a thoracoscope or other viewing scope and endovascularly partitioning the patient's arterial system at a location within the ascending aorta. The cardiopulmonary bypass and cardioplegia can be induced, and a variety of surgical procedures performed on the stopped heart using percutaneously introduced tools. The method of the present invention will be particularly suitable for forming coronary artery bypass grafts, where an arterial blood source is created using least invasive surgical techniques, and the arterial source is connected to a target location within a coronary artery while the patient is under cardiopulmonary bypass and cardioplegia.

A method for closed-chest cardiac surgical intervention relies on viewing the cardiac region through a thoracoscope or other viewing scope and endovascularly partitioning the patient's arterial system at a location within the ascending aorta. The cardiopulmonary bypass and cardioplegia can be induced, and a variety of surgical procedures performed on the stopped heart using percutaneously introduced tools. The method of the present invention will be particularly suitable for forming coronary artery bypass grafts, where an arterial blood source is created using least invasive surgical techniques, and the arterial source is connected to a target location within a coronary artery while the patient is under cardiopulmonary bypass and cardioplegia

The present invention relates generally to a support structure for fixating a patient to a treatment unit, and especially to a support structure for fixating the patient to a cardiopulmonary resuscitation unit. An embodiment of the support structure (10) comprises a back plate (100) for positioning behind said patient's back posterior to said patient's heart and a front part (200) for positioning around said patient's chest anterior to said patient's heart. Further, the front part (200) can comprise two legs (210, 220), each leg (210, 220) having a first end (212, 222) pivotably connected to at least one hinge (230, 240) and a second end (214, 224) removably attachable to said back plate (100). Said front part (200) can further be devised for comprising a compression / decompression unit (300) arranged to automatically compress or decompress said patient's chest when said front part (200) is attached to said back plate (100).

A personalized real-time automated cardiovascular monitoring system monitors abnormalities in a patient's cardiovascular activity data through the use of individually adjusted electrocardiogram Holter apparatus (Holter / ECG device) that provides an automatic medical diagnosis of cardiac abnormalities and generates abnormality alert signals representative of certain abnormalities in patient's cardiac activities. The signals are transmitted using a wireless network to a medical dispatcher center. A response is generated according to the abnormality detected. Individual parameters indicative of patient's cardio activities are personalized to allow for adjustments of chronic patients. A base Holter / ECG unit, includes the wireless / electric electrodes and their respective wireless / electric connections, and a Holter / ECG recording unit affixed to the base unit. Automatic real-time medical response may be provided based on automatic cardiac abnormality alert detection from the Holter / ECG data.

An isolated heart or heart-lung preparation in which essentially normal pumping activity of all four chambers of the heart is preserved, allowing for the use of the preparation in conjunction with investigations of electrode leads, catheters, ablation methods, cardiac implants and other medical devices intended to be used in or on a beating heart. The system can be designed to be used within a Magnetic Resonance Imaging (MRI) unit or a X-ray computed tomography (CT) scanner. The preparation may also be employed to investigate heart and lung functions, in the presence or absence of such medical devices. In order to allow comparative imaging visualizations of either or simultaneously the heart and / or lung structures and devices located within the chambers of the heart or vessels or bronchi within the lungs, a clear perfusate such as a modified Krebs buffer solution with oxygenation is circulated through all four chambers of the heart and thus the coronary and / or pulmonary vasculatures. A ventilator with intubation tube can be used to inflate / deflate the lungs and / or provide oxygen to the isolated organs. The preparation and recordings of the preparation may be used in conjunction with the design, development and evaluation of devices for use in or on the heart and / or lungs, as well as for use as an investigational and teaching aid to assist physicians and students in understanding the operation of the cardiopulmonary system.

A personalized real-time automated cardiovascular monitoring system monitors abnormalities in a patient's cardiovascular activity data through the use of individually adjusted electrocardiogram Holter apparatus (Holter / ECG device) that provides an automatic medical diagnosis of cardiac abnormalities and generates abnormality alert signals representative of certain abnormalities in patient's cardiac activities. The signals are transmitted using a wireless network through a bi-directional wireless protocol to a medical dispatcher center. A response is generated according to the abnormality detected. Individual parameters indicative of patient's cardio activities are personalized to allow for adjustments of chronic patients. A base Holter / ECG unit, includes the wireless / electric electrodes and their respective wireless / electric connections, and a Holter / ECG recording unit affixed to the base unit. The Holter / ECG apparatus can be integrated as a chip into a wireless device, such device being in a wireless phone network. Automatic real-time medical response may be provided to detection of risks of adverse effects resulting from use of at least one medication, based on automatic cardiac abnormality alert detection from the Holter / ECG data.

An apparatus for determining a patient's volemic status can make use of a physiological heart-lung interaction during spontaneous breathing or mechanical ventilation. Further, a computer program for determining the patient's volemic status has instructions for carrying out the steps of generating data of a physiological heart-lung interaction during spontaneous breathing or mechanical ventilation, and determining the patient's volemic status when making use of the data of the physiological heart-lung interaction, when run on a computer.

An apparatus, system, and method is disclosed for monitoring the motion, breathing, heart rate of humans in a convenient and low-cost fashion, and for deriving and displaying useful measurements of cardiorespiratory perfonnance from the measured signals. The motion, breathing, and heart rate signals are obtained through a processing applied to a raw signal obtained in a non-contact fashion, typically using a radio-frequency sensor. Processing into separate cardiac and respiratory components is described. The heart rate can be determined by using either spectral or time-domain processing. The respiratory rate can be calculated using spectral analysis. Processing to derive the heart rate, respiratory sinus arrhythmia, or a ventilatory threshold parameter using the system is described. The sensor, processing, and display can be incorporated in a single device which can be worn or held close to the body while exercising (e.g., in a wristwatch or mobile phone configuration), or alternatelyplaced in a fixed piece of exercise equipment at some distance form the body (e.g., in a treadmill dash panel), and may also be integrated with other sensors, such as position locators.

The invention relates to a heart rate variability biofeedback exercise systematic method, comprising a set of autonomic nervous cardiopulmonary system regulation state and harmonicity metrics and a method of guiding a trainee into harmonious state. A heart rate variability biofeedback exercise apparatus of the invention collects heart rate and respiratory signals of the trainee in real time, analyzes and computes the autonomic nervous cardiopulmonary system regulation state and harmonicity metrics of the trainee, and guides the trainee to regulate mood and respiration to the harmonious state. A heart rate variability biofeedback exercise is effective in regulating autonomic nervous regulation state, thus lowering cardiopulmonary system risk; is effective in relieving competition mental stress, thus increasing the score. Therefore the method and apparatus are significant to keeping people healthy and improving living quality.

A method for performing cardiopulmonary resuscitation (CPR) includes elevating the heart of an individual to a first height relative to a lower body of the individual. The lower body may be in a substantially horizontal plane. The method may also include elevating the head of the individual to a second height relative to the lower body of the individual. The second height may be greater than the first height. The method may further include performing one or more of a type of CPR or a type of intrathoracic pressure regulation while elevating the heart and the head. The first height and the second height may be determined based on one or both of the type of CPR or the type of intrathoracic pressure regulation.

Methods and systems for sensing a physiological characteristic of a subject. At least one receiver antenna can be provided in proximity to a portion of the subject's body to obtain at least one receiver signal resulting from at least one transmitter signal that has propagated to the receiver antenna and has been reflected, diffracted, scattered, or transmitted by or through the portion of the subject's body. One or more coherent signal pairs can be formed. Then, amplitude and phase information of a plurality of frequency components for each signal pair can be determined. A set of comparison values can be determined for each signal pair by comparing respective frequency component phases and respective frequency component amplitudes of the signals. Physiological characteristics of the subject can then be determined from these comparison values.

Provided is a training box that is a practice tool for learning heart massaging (sternal compression) through experience; is low-cost, small-sized, light weight, and easy to transport; retains durability under repeated use; and on which AED use procedures can also be drilled. The portable practice tool for heart massaging in cardiopulmonary resuscitation is characterized by being provided with a chest-mockup main unit (1) having a thickness that is thicker than a thickness equivalent to the depth of chest cavity subsidence required during heart massaging (sternal compression), in which a palm-sized opening (3) in the center of the chest-mockup main unit (1) is opened in a vertical direction; a closed-cell synthetic resin foam (6a), which is covered by a bag (6d), contracts and expands in a vertical direction, and has a cavity (7) in the interior, is provided in said opening as a pressing part (6) that is moveable in the vertical direction; and a valve (8), which is for both the entrance and exit of air to the abovementioned cavity (7) and the detection thereof, is disposed on a side of the bag (6d).

The invention discloses a cardiopulmonary resuscitation first-aid device for an emergency department. The cardiopulmonary resuscitation first-aid device comprises a lying plate, wherein a supporting table is arranged at the bottom of the lying plate; a supporting frame is arranged on the left side of the top of the lying plate; and a transverse rod is fixedly mounted at the top of the right side of the supporting frame. According to the cardiopulmonary resuscitation first-aid device disclosed by the invention, a three-dimensional chest pressing mode is adopted and force is uniformly distributed to the whole chest through a pressing bag; on one hand, downward longitudinal pressing force is formed; meanwhile, a chest wall is extruded to trigger and enhance breathing and circulation, so thatcontinuous, stable and effective chest compression is realized; especially, chest compression and breathing assistance of a patient are orderly, synchronously and alternately carried out, and the device is more regular and has a better utilization effect; compared with previous various cardiopulmonary resuscitation devices, the cardiopulmonary resuscitation first-aid device has better breathing and circulation driving effects; an extending or retracting stroke of an electric retractable device is sufficiently utilized, the power consumption is lower and resource wastes are reduced; and the cardiopulmonary resuscitation first-aid device has high portability and is convenient to move and use.

The invention relates to a method and a system for identifying heart-lung sound signals. The method includes the steps of acquiring heart / lung sounds initial detection signals, acquiring correspondingenvironment sound signals, and subjecting the heart / lung sounds initial detection signals to differential noise reduction processing, so as to prevent the influence of the peripheral environment on the cardio-pulmonary sound signals, prevent influence of signals irrelevant to the cardio-pulmonary sound signals on the identification precision, and effectively improve the collection and identification precision of the cardio-pulmonary sound signals. The heart sound simulation signals is processed through combination of EMD (Empirial Mode Decomposition) and a high-order shannon entropy algorithm, and a wavelet decomposition is used for processing the lung sound digital signals. Accurate recognition of the characteristics of the heart sound signals and the lung sound signals is achieved, andthe identification steps of the cardio-pulmonary sound signals are effectively simplified. The real-time performance is higher, and the cost is low.

A wearable cardiac defibrillator (“WCD”) system may include a support structure that a patient can wear, an energy storage module that can store an electrical charge, and a discharge circuit that can discharge the electrical charge through the patient so as to shock him or her, while the patient is wearing the support structure. Embodiments may actively take into account bystanders, both to protect them from an inadvertent shock, and also to enlist their help. In some embodiments the WCD system includes a speaker system that transmits a sound designed to assist a bystander to perform CPR. Optionally CPR chest compressions received by the patient can be further detected, and feedback can be given. In embodiments, a WCD system may include a user interface that can be controlled to output CPR prompts tailored to a skill level of the bystander.

Presented are concepts for monitoring cardio-respiratory function of a patient. One such concept comprises detecting light or sound from the sublingual vasculature using a sublingual sensor unit adapted to be positioned at a sublingual vasculature of the patient's tongue and to generate a sensor output signal based on the detected light or sound. A processing unit adapted to receive at least one of the sensor unit output signal, wherein the sensor unit and the processing unit are arranged to analyze the venous component in the sensor output signal. An output signal from the sublingual sensor may then be used to provide information on cardio-respiratory parameters like respiration rate and respiration rate variability, for example.

The invention discloses a critical medical patient respiration recovery assisting device. The device comprises a bottom plate; the left end of the top of the bottom plate is provided with a support frame; and the top of the right side of the support frame is provided with a transverse frame. In the device, an air bag moves up and down to press the cardiopulmonary part of a patient up and down, sothat the purposes of cardiopulmonary resuscitation and respiration recovery are achieved, the trouble of manual pressing operation is avoided, great convenience is brought, and the critical patient can be timely rescued; in the process of pressing the cardiopulmonary part of the patient up and down, the device has good buffer effect, thereby preventing injury of internal organs of the patient dueto overlarge pressing force; and respiration operation of inhaling and exhaling is performed on the patient to achieve the purpose of artificial respiration, and cardiopulmonary resuscitation rescue and artificial respiration are kept consistent in frequency and are performed at the same time, so that the purposes of fast rescue and respiration recovery of the patient are achieved and the effect is better.

Initial setup of a Cardio Pulmonary Resuscitation device (100) is to be accomplished so that a contact pad (102) of the device makes the correct contact with the chest before the device starts giving chest compressions to the patient. Thereby situations where the contact pad is not in initial contact with the chest or situations where the contact pad initially compresses the chest too much are avoided. The position of the contact pad is measured during initial setup, and when contact between the chest and the contact pad is established, the actual position of the contact pad is measured and set as an initial position. Then a positioning range is set relative to the initial position. Therefore, the CPR device is provided with a positioning aid (131) which informs the rescuer when the contact pad is within the positioning range or when the contact pad is outside the initial positioning range.

A method of data management for optimizing the patient outcome from the provision of cardiac resynchronization therapy (CRT) is described. This method describes a process by which sets of dynamic cardiopulmonary dependent variables are measured during steady-state conditions, displayed, and translated into quantitative and qualitative measurements while the independent variables of CRT, device lead placement and atrial-ventricular and interventricular delay settings of bi-ventricular pacemaker systems, are altered by a physician. In combination with visual observation and computer-assisted ranking of the dependent variables, a physician can utilize the resulting information to render decisions on the optimal choice of the independent variables.

The invention provides a method, a system and a device for making and implementing a personalized deep-breathing exercise prescription. The method comprises the following steps: defining the personalized deep-breathing exercise prescription; guiding a testee to be subjected to a cardiopulmonary harmony test: guiding the testee to respectively carry out free breathing and breathing guiding when thetestee is in a resting state, and calculating cardiopulmonary harmony series indexes according to synchronously measured electrocardiosignals and breathing signals; making a personalized deep-breathing exercise prescription according to the cardiopulmonary harmony test result of the testee: selecting the optimal guide breath frequency of the cardiopulmonary harmony series index of the testee as abreath frequency parameter of breath exercise, and taking values corresponding to other parameters in the personalized deep-breathing exercise prescription as default values; and guiding the testee to perform breathing exercise according to the personalized deep breathing exercise prescription. The cardiopulmonary harmony state of a testee is evaluated by taking cardiopulmonary harmony series indexes as key indexes, and a personalized deep-breathing exercise prescription is formulated according to the cardiopulmonary harmony state.

In certain embodiments, methods of the present invention obtain dynamic data sets of an NMR spectroscopy signal of polarized 129Xe in a selected structure, environment, or system. The signal data can be used to evaluate: (a) the physiology of a membrane or tissue; (b) the operational condition or function of a body system or portion thereof (when at rest or under stimulation); and / or (c) the efficacy of a therapeutic treatment used to treat a diagnosed disorder, disease, or condition. Thus, the present invention provides methods for screening and / or diagnosing a respiratory, cardiopulmonary disorder or disease such as chronic heart failure, and / or methods for monitoring the efficacy of therapeutics administered to subject to treat the disorder or disease.

Medical devices, plug-ins, systems, and methods for CPR quality feedback are disclosed. The medical devices can calculate peripheral circulation relevant parameters based on measured signals containing at least partial hemodynamic characteristics. Amplitude and area characteristics included in the peripheral circulation relevant parameters can further be determined for providing feedback and control relating to CPR quality during the compression process. Also, compression interruption during CPR can be evaluated based on a pulse waveform generated from the measured signals.

Systems and methods related to the field of cardiac resuscitation, and in particular to devices for assisting rescuers in performing cardio-pulmonary resuscitation (CPR) are described herein.

The present invention relates to A system for monitoring the cardiovascular system using a heart sound, which comprises a heart sound receiving means(100) for receiving a heart sound(HS); DSP (Digital Signal Processor) module(200) for converting the heart sound(HS) received from said heart-sound receiving means(100) to a digital signal; and an arithmetic section(300) for calculating phonocardiogram(PCG) from the digital signal converted in the DSP module (200) and calculating information related to a preload or information related to a cardiac contractile force or information related to a respiratory change.

The invention discloses a non-negative matrix factorization-based heart and lung sound separation method. The method comprises the steps of firstly filtering a mixed signal of heart and lung sounds in a time domain to obtain a priori heart sound signal and a priori lung sound signal; secondly performing short-time Fourier transform and sparse non-negative matrix factorization on the priori heart sound signal and the priori lung sound signal; and finally obtaining a basis matrix of the mixed signal. The sparse non-negative matrix factorization process is equivalent to a learning process of the basis matrix, and has a clustering effect; the basis matrix can be mined effectively from the priori heart sound signal and the priori lung sound signal; and a heart sound signal and a lung sound signal are accurately separated from the mixed signal of the heart and lung sounds in the time domain according to the basis matrix in the subsequent steps. The invention furthermore discloses a non-negative matrix factorization-based heart and lung sound separation apparatus, which has the abovementioned beneficial effects.

The invention discloses a method for sensing occurrence of fracture in a cardio-pulmonary resuscitation process and a compression apparatus. The method for sensing the occurrence of the fracture comprises the following steps: 1) setting a distance sensor to detect a compression depth value of a compression executing part, setting a pressure sensor to detect a real-time compression pressure value of the compression executing part on a chest and transmitting the values to a central control system; 2) starting the compression executing part to execute compression actions on the chest of a patient; 3) storing a corresponding relation between the chest compressed pressure and the compression depth in the central control system as a comparison parameter; 4) updating the storage of the comparison parameter every other a certain duration or other every compression times; and 5) detecting whether a sudden change exists in the compression pressure or not, so as to judge the occurrence of the fracture. The method for sensing the occurrence of the fracture in the cardio-pulmonary resuscitation process disclosed by the invention can timely sense the situation of compression fracture in a process of implementing emergency, so as to effectively relieve fracture and secondary injury caused by the fracture, and subsequently to improve emergency quality and efficiency.

The invention relates to a health monitoring device and method based on millimeter-wave radar. The health monitoring method comprises the following steps: a signal acquisition module acquires information of a to-be-detected human body, and obtains a modulation pulse phase change signal generated by the distance of the human body according to the information of the human body; a signal processing module adopts a wavelet transformation method to separate and reconstruct a respiration signal, a heartbeat signal and a body movement signal according to the modulation pulse phase change signal so asto determine health indexes of the human body, and compares and analyzes the health indexes with preset values so as to determine prompt information, wherein the health indexes comprise a cardiopulmonary resonance index, heart rate variability and respiratory variability; and an index prompting module displays prompt information. The device can provide completely interference-free, contact-free and penetrable health monitoring, and is particularly suitable for health monitoring in environments such as beds, toilets and vehicles.

The invention discloses an effective exercising evaluating method based on cardiovascular endurance grade and RPE (retina pigment epithelium) feedback. The effective exercising evaluating method comprises the following steps of monitoring the heart rate of exercising through a heart rate monitor, recording the exercising data in the exercising process of a user, and scoring the RPE after the exercising is fished; automatically feeding back according to the RPE scores, and adjusting the target heart rate and exercising intensity. The effective exercising evaluating method has the advantage thatby combining with intelligent equipment, the self exercising process can be continuously adjusted so as to reach the safest and effective exercising intensity, and ensure the scientific and reasonable exercising.