28 results about "Inspiratory phase" patented technology

The invention relates to the technical field of emotional robots, and discloses an embracing emotional robot which comprises an inner shell, low-cost and high-simulation breathing simulation is achieved through cooperative control of an air pump and an air valve, and the embracing emotional robot is designed by combining simulation body temperature brought by a heating piece and synchronous action of a rotatable arm. The emotion robot can naturally rotate forwards when being embraced and is matched with simulated respiration and simulated body temperature, so that the immersion and emotion interaction experience of a user are remarkably improved; the operation cycle of the air pump strictly follows biological breathing characteristics, the inspiration stage accounts for 2 / 3 of the breathing cycle, the speed of the inspiration stage changes fast and slow, the expiration stage accounts for 1 / 3 of the expiration stage, smooth pressure relief is achieved through the air valve, and the highly-simulated breathing mode can effectively guide a user to breathe synchronously, so that parasympathetic nerves are activated, the anxiety level and heart rate fluctuation are reduced, and the user experience is improved. And the whole structure adopts a modular design, complex functions such as breathing simulation, embracing and body temperature simulation can be realized, the maintenance is convenient, and the device is particularly suitable for long-term accompanying scenes.

The invention relates to the technical field of micro-grid atomizers, and discloses a breath triggering micro-grid atomizer based on a thermocouple sensor, which comprises a second port and a third port of a three-way pipe, the breathing sensing module is provided with a differential sensing array on a flexible circuit board, and a sensing unit at least comprises a thermocouple sensor; the atomization module integrates an impedance measurement circuit and a driving circuit on a flexible circuit board, and a micro-grid transducer is multiplexed to sense the self state; the controller carries out weighted fusion on sensing unit signals in the differential sensing array and predicts the inspiration starting moment, a pre-triggering instruction is sent out at the expiration end stage to drive the energy converter to pre-charge atomized liquid medicine at low power, impedance characteristics are synchronously collected to obtain the micro-grid efficiency value, the inspiration phase carries out compensation and correction on driving power according to the real-time flow proportion and the efficiency value, and the micro-grid efficiency value is adjusted according to the real-time flow proportion and the efficiency value. And applying a reverse pulse to the expiratory phase to clean the micro-grid and recording the effect to predict the subsequent cleaning opportunity. Closed-loop control of respiratory phase prediction triggering, staged scheduling and efficiency self-calibration is achieved.

This application relates to a continuous positive airway pressure (CPAP) device and a method for controlling ventilation pressure. The minimum operating pressure is determined by acquiring a preset treatment pressure and a target pressure drop. The device monitors the patient's respiratory phase transitions in real time and employs different pressure regulation strategies for the inspiratory and expiratory phases. During the inspiratory phase, the ventilation pressure is smoothly adjusted from the preset treatment pressure to the minimum operating pressure and maintained to reduce inspiratory effort. During the expiratory phase, the ventilation pressure is gradually increased from the minimum operating pressure to ensure that the ventilation pressure returns to the preset treatment pressure at the end of the expiratory phase, maintaining airway support and avoiding the risks of airway closure and central apnea. This application improves patient comfort during CPAP therapy, enhances treatment compliance, and simultaneously ensures airway support while reducing the risks of airway closure and central apnea.

This invention discloses an intelligent mask sealing detection system and method based on active biomimetic fit adjustment, belonging to the field of intelligent protective equipment detection technology. The system includes the following steps: collecting breathing change information and fit contact feedback information between the mask and face throughout the entire mask-wearing process, and organizing this information according to the temporal relationship between the inhalation and exhalation phases to generate a breathing fit rhythm sequence reflecting the correspondence between breathing fluctuations and fit changes. This invention uses the breathing fit rhythm as its core to dynamically analyze the fit state, identifying short-term air leakage phenomena where the time deviation of the fit response during breathing rhythm switching is synchronized with the inhalation peak, thus avoiding misjudgments of sealing. Furthermore, based on the leakage distribution pattern, it pre-adjusts the fit adjustment and sampling sequence to ensure that the detection covers key change areas, improving the reliability of mask protection under complex breathing conditions.

This invention relates to the field of high-frequency ventilator technology and discloses a high-frequency ventilator operating method based on flow control. The high-frequency ventilator sequentially outputs multiple average airway flow rates of the same or different magnitudes and with the same or different durations according to a set periodic pattern. The airway flow rate output is stable during the expiratory and inspiratory phases, and the average airway flow rate can be output at the same or different magnitudes during different inspiratory and expiratory phases. The output gas flow rate of the high-frequency ventilator can be independently adjusted periodically between different ventilation flow rate levels within different durations. In high-frequency ventilation, the flow control-based high-frequency ventilation method can precisely control the gas flow rate and time. Flow control ventilation can better control changes in airway pressure. By setting appropriate flow rates and times, the delivery volume of the device can be accurately estimated to reduce airway pressure and risks, and lower the possibility of barotrauma.

The application relates to the technical field of intelligent vehicle-mounted technology, in particular to a breathing synchronization intelligent vehicle-mounted oxygen supply control method and system, which comprises the following steps: emitting electromagnetic waves to passengers through a millimeter wave radar and receiving reflected echo signals; performing signal processing on the reflected echo signals to obtain periodic signal waveforms; identifying the inspiration stage and the expiration stage of the passengers based on the periodic signal waveforms; outputting an opening instruction in response to the identification of the inspiration stage; outputting a closing instruction in response to the identification of the expiration stage; and based on the analysis of the periodic signal waveforms formed by the passengers in a plurality of historical breathing cycles, predicting the starting moment of the next inspiration stage and outputting the opening instruction at a preset time point before the predicted starting moment of the inspiration stage. The oxygen utilization rate is greatly improved, so that a smaller-power oxygen generator or a smaller-capacity oxygen storage tank can be used under the condition of the same effective oxygen uptake, thereby reducing the system volume, weight, cost and energy consumption.

This invention discloses an intelligent, adaptive local oxygen supply system and its control method, belonging to the technical field of oxygen supply auxiliary equipment. The system includes an oxygen supply module, a target tracking module, an adaptive air delivery module, and a control module. The target tracking module acquires the spatial coordinate information of the user's face or nasal cavity area in real time; the control module generates a pointing command based on the spatial coordinate information, driving the adaptive air delivery module to perform displacement compensation, ensuring the oxygen jet direction is towards the target area. Furthermore, the system, through a respiratory rhythm monitoring module in conjunction with a throttle switch, closes the throttle switch during the exhalation phase and accumulates pressure in the buffer pressurization container; during the inhalation phase, it triggers the throttle switch in advance to release pressurized oxygen based on the airflow flight time difference calculated by the infrared ranging module, achieving synchronous coverage of the oxygen jet and the inhalation peak. This invention can automatically adjust the air delivery direction according to changes in the user's position and match the respiratory rhythm for intermittent pressurized oxygen supply, effectively improving oxygen utilization.

The invention discloses a pressure adjusting method and system for double-level respiratory support equipment, and the method comprises the following steps: in the expiration stage of a user, setting expiration positive pressure as initial pressure; detecting the breathing state of the user in real time, and when it is detected that the user enters an inspiration state, performing linear fitting based on the first pressure value to obtain a slope value; a first linear model of the target inspiration positive pressure is established according to the slope value, and the expiration pressure is increased to the target inspiration positive pressure at the initial pressure increasing speed; and in the inspiration stage, the maximum user flow is updated in real time, when the inspiration stage is switched to the expiration stage, a second linear model of the target expiration positive pressure is established based on the maximum user flow, and the target inspiration positive pressure is reduced to the target expiration positive pressure at the initial pressure reduction speed. The technical problem that the pressure boosting or reducing speed of existing bihorizontal respiratory support equipment is too high is solved.

The invention relates to an atomization control method, device and system, atomization equipment and a storage medium. The method comprises the following steps: acquiring a first monitoring signal and a second monitoring signal of a breathing machine, and controlling an atomizer to start atomization under the condition that a breathing state is determined to be an inspiration state according to at least one of the first monitoring signal and the second monitoring signal; and controlling the atomizer to stop atomizing under the condition that the breathing state is determined to be an expiration state according to the running parameters of the breathing machine in the first monitoring signal and any one of the second monitoring signals, or under the condition that the breathing state is determined to be an abnormal state according to the alarm signal of the breathing machine in the first monitoring signal. Therefore, atomization is started only in the inspiration stage, atomization is stopped in the expiration stage and in the abnormal state, medicine waste is remarkably reduced, the effective utilization degree and the corresponding curative effect of medicine are greatly improved, and medical cost and environmental pollution are reduced.

The invention relates to the technical field of ventilation equipment, in particular to a leakage calculation method and system of ventilation equipment, and the method comprises the following steps: when a patient inhales autonomously, determining the flow output of the ventilation equipment by adopting a gradient filtering method, thereby judging whether the flow velocity of the patient end has leakage abrupt change or not; if leakage exists, the next step is carried out; a classical leakage model is adopted, the value of the leakage amount is updated in combination with the motion equation of the patient and the breathing machine, and therefore real-time monitoring and updating of the leakage amount of the breathing equipment are achieved in the whole breathing process. According to the peak flow monitoring and gradient filtering combined method provided by the invention, the abnormal leakage of the inspiratory phase can be quickly monitored, and the leakage rate and leakage parameters of the breathing machine are updated in real time after the flow rate and the pressure signal are stable, so that the leakage rate can be quickly updated in the ventilation process.

This application discloses a method and apparatus for regulating expiratory switching. The method includes: acquiring the user's proximal pressure and the total airflow within the target ventilator during a preset time period of the expiratory phase of the respiratory cycle; determining a predicted user flow rate based on the user's proximal pressure and total airflow; determining a predicted respiratory muscle exertion value based on the predicted user's proximal pressure and user flow rate; and controlling the target ventilator to switch from the inspiratory phase to the expiratory phase in response to the predicted respiratory muscle exertion value meeting a preset condition. Using the user's respiratory muscle exertion as the determination information can accurately reflect the user's voluntary intention to switch between inspiratory and expiratory phases, improving the human-ventilator synchronization during expiratory switching.

This disclosure provides a ventilator control method and apparatus, a ventilator, a storage medium, and a program product. The ventilator control method includes: acquiring raw diaphragmatic electrophysiological signals of a subject; identifying ECG signals in the raw diaphragmatic electrophysiological signals; determining filter weights based on the deviation between the raw diaphragmatic electrophysiological signals and the ECG signals; filtering the ECG signals in the raw diaphragmatic electrophysiological signals using the filter to obtain a first intermediate signal; reconstructing the first intermediate signal to obtain a diaphragmatic electrophysiological signal to be processed; extracting the envelope curve of the diaphragmatic electrophysiological signal to be processed; and controlling the ventilator to switch between the expiratory and inspiratory phases based on the envelope curve.

The present application relates to the technical field of breathing machine, disclose a kind of based on pneumatic control's breathing machine airflow monitoring and control system, method and device, comprising: inspiration air pressure control module, in inspiration stage, according to the pressure on the expiration gas path monitored in real time, control the airflow regulation gas path connected with the expiration gas path end, to make the inspiration airflow provided for patient satisfy preset pressure;Exhalation air pressure control module, in expiration stage, according to the expiration pressure monitored in real time, control the airflow regulation gas path connected with the expiration gas path end, to realize the set positive end-expiratory pressure.Exhaust air pressure control module can control the pressure on the expiration gas path, to prevent inspiration airflow from expiration gas path in inspiration stage Large amount of discharge, reduce oxygen consumption while, make the inspiration airflow provided for patient satisfy preset pressure, guarantee the stability of pressure, realize constant airway pressure;In expiration stage, the expiration pressure monitoring and control of expiration gas path, realize positive end-expiratory pressure.

A ventilator (1) comprises: an air port (3) to which a patient's respiratory apparatus (15) is connected, enabling ventilation of the patient with air; an actuator (5) for supplying an airflow (7) at the air port (3); and a sensor (9) for generating measurement data (11) relating to the ventilation. A control unit (13) for the ventilator (1) is configured to perform the following procedure (M): generating a control signal (25) to control the actuator (5) so that a ventilation maneuver is carried out in which at least one section (17, 19) of the respiratory apparatus (15) is opened during an inhalation phase and / or closed during an exhalation phase; Receiving the measurement data (11), wherein the measurement data (11) indicate a pressure-dependent course of a quantity of at least one respiratory gas inhaled by the patient during the inhalation phase and / or exhaled during the exhalation phase, depending on the pressure of the breathing air;Determining an opening pressure corresponding to a pressure of the breathing air at which at least one section (17, 19) of the respiratory apparatus (15) is opened, by evaluating a section of the pressure-dependent curve related to the inhalation phase, and / or determining a closing pressure corresponding to a pressure of the breathing air at which at least one section (17, 19) of the respiratory apparatus (15) is closed, by evaluating a section of the pressure-dependent curve related to the exhalation phase.

This invention provides a non-invasive respiratory support airway control method and system integrating intrapulmonary oscillation expansion and nitric oxide delivery. The invention is executed on a system including a mask interface, inspiratory and expiratory branches on the same airway platform, a controller, an airway output control unit, a nitric oxide source, a mixing unit, and pressure, flow rate, and concentration monitoring units. It acquires airway pressure, airway flow rate, and nitric oxide, nitrogen dioxide, and oxygen concentrations to form a set of airway monitoring indicators. Based on the indicator set and ventilation and oxygenation indicators, it determines the operating strategy and generates target pressure and target flow rate. When oscillation is involved, it generates and outputs oscillation waveform parameters. It determines the inspiratory phase window and injects nitric oxide at a set delivery concentration within the window. It corrects the delivery concentration with nitric oxide concentration and interlocks an alarm when nitrogen dioxide or oxygen concentration exceeds limits. During strategy switching, it freezes the injection and purges the system, resuming injection after the access conditions are met.

A ventilation device for artificially ventilating a patient, having a controller to actuate a flow modifying device for a P / V maneuver while wherein the pressure of respiratory gas is increased during an inspiration phase, wherein respiratory gas passively flows out of the patient during an expiration phase after the pressure increase is terminated, for a plurality of respiratory gas pressures, the respective maneuver respiratory gas volume in the patient from the P / V maneuver is ascertained in connection with the respiratory gas pressure during inspiration and expiration phases; the controller ascertaining a sequence of lung compliance values during the inspiration phase, ascertain a reference compliance value, based on the reference compliance value, determine a termination compliance value in the form of a threshold value as a termination criterion for the inspiration phase, and—terminate the inspiration phase if the termination compliance value is reached or exceeded.

This invention pertains to a system, a method and a device for outwards clearing of debris and secretions within the main airways of the lungs and for preventing their aspiration into the lungs, while dynamically assisting the exhalation of air during the expiratory phase of ventilation. The device comprises an endotracheal tube comprising a hollow conduit in communication with a gas source that is synchronized with a subject's respiration. The device may be actuated during the inhalation phase, and / or the exhalation phase of the respiratory cycle. The endotracheal tube is stably placed in a main airway of the lung. The endotracheal tube comprises a circular jet emitting member that has at least one aperture pointing generally towards the airway opening. When pressurized gas flows through the hollow conduit and into the jet emitting member,jets of gas are emitted generally in the direction of the airway opening. These jets push debris and secretions outward while entraining exhaled air by the Venturi effect and thereby assisting exhalation and reducing intra-thoracic pressure.

The application discloses a kind of respiratory synchronous extracorporeal diaphragm nerve electric stimulator, belong to medical equipment technical field, to solve the problem of low diaphragm muscle contraction efficiency and patient discomfort caused by electric stimulation and patient inhalation action asynchronization in respirator treatment.The device detects the inspiratory flow rate signal in real time by accessing the flow rate sensor at the patient end of the respirator circuit, and transmits it to the control unit after amplification and filtering by the signal conditioning circuit;The control unit determines whether the inspiratory flow rate meets the standard based on the preset threshold, and synchronously triggers the electric stimulation module to output pulse signals matching the respirator inspiration cycle to the diaphragm nerve.The core of its technical scheme includes dynamic detection of flow rate signal, threshold determination logic and adaptive adjustment of electric stimulation pulse envelope length, to ensure that electric stimulation is accurately synchronized with the inspiration phase.The device is mainly used to assist respirator users in enhancing diaphragm nerve driving ability and improving ventilation and blood flow ratio imbalance, and is suitable for rehabilitation treatment of patients with chronic respiratory failure or diaphragm dysfunction.

The application discloses a kind of human whole lung model in particle deposition numerical simulation method, it is related to biomedical engineering and computational fluid dynamics technical field.The method includes: constructing including upper respiratory tract, bronchus and lung alveolus human whole lung geometric model, and is divided into corresponding area;In inspiration stage, inject particle from upper respiratory tract entrance, simulate particle movement, record the escape, suspended and deposited particles of bronchial region;Lung alveolus region adopts dynamic grid technology to simulate expansion and shrinkage in breathing cycle, stores exhaled particle;In expiration stage, the lung alveolus exhaled particle is introduced into bronchus, and is combined with suspended and deposition information and is simulated progressively upwards, until particle is exhaled from upper respiratory tract, complete whole breathing cycle particle deposition simulation, obtain particle deposition rate.The method can accurately simulate the deposition process of particle in whole lung, and provide support for inhaled drug delivery and health risk assessment.

The invention relates to the technical field of monitoring underwear, and discloses wearable physiological signal monitoring underwear and a detection system.The wearable physiological signal monitoring underwear comprises an underwear body and a monitoring module used for monitoring respiratory signals, a waist strap is arranged on the waist of the underwear body, and one end of the waist strap is connected with a strain type pressure sensor module; and the strain type pressure sensor module is electrically connected with the monitoring module. According to the breathing assisting device, the breathing assisting module assists a patient in breathing, the breathing assisting module is inflated in the inspiration stage, the face, close to the body, of the breathing assisting module is stretched, human respiratory muscle stretching is assisted, and in the inspiration stage, the breathing assisting module naturally deflates, exhausts and resets under the elasticity of the breathing assisting module and assists respiratory muscle retraction. In this way, the obstruction degree of the patient wearing the monitoring equipment to the respiration of the patient is relieved, the patient can adapt to the existence of the monitoring equipment and generate compliance to the monitoring equipment in the process of wearing the monitoring equipment for a long time, and the conflict psychology of the patient wearing the monitoring equipment is reduced.

The invention discloses an intelligent full-automatic atomization drug delivery device, and relates to the technical field of medical instruments. The device comprises a mouthpiece and a main device, wherein the main device is mainly composed of a shell, a storage container, a power supply unit, a control unit, an airflow detection unit and an atomization generation unit. The airflow detection unit monitors the breathing airflow of a patient in real time, and the control unit judges the inspiration stage and the expiration stage according to signals and correspondingly controls the atomization generation unit to start atomization only in the inspiration stage and automatically stop in the expiration stage. In addition, the control unit can dynamically adjust the atomization rate according to the inspiration duration and the airflow intensity, and accurate drug delivery is achieved. The device solves the problem that medicine is wasted in the expiration stage of traditional atomization treatment, and has the advantages of dosing according to needs, saving medicine, achieving individualized adaptation and being convenient and fast to use.

The present disclosure relates to a method for assessing fluid responsiveness of a patient (3) connected to a breathing apparatus (2) providing mechanical ventilation to the patient (3). The method comprises the steps of monitoring a respiratory pressure of the patient (3), controlling a pneumatic unit (17) of the breathing apparatus (3) to provide baseline ventilation of the patient (3) with alternating inspiration phases and expiration phases during a period of baseline ventilation, monitoring at least one hemodynamic parameter related to fluid responsiveness of the patient (3), aborting baseline ventilation and initiating an end-expiratory fluid responsiveness assessment [EEFRA] period at an end of an expiration phase, and determining a degree of fluid responsiveness of the patient (3) based on a change in the at least one monitored hemodynamic parameter between the period of baseline ventilation and the EEFRA period. The method further comprises the step of dynamically controlling the pneumatic unit (17) during the EEFRA period based on the monitored respiratory pressure to counteract a change in an intrathoracic pressure of the patient (3) during spontaneous respiratory efforts by the patient (3).

The embodiment of the invention discloses a breathing ventilation system which comprises an air source connector, an inspiration branch, high-frequency oscillation generation equipment, ventilation control equipment and active expiration equipment. The inspiration branch is respectively connected with the air source interface and a patient pipeline connected with a patient respiratory system; the high-frequency oscillation generating equipment is used for generating high-frequency oscillation on the gas of the gas suction branch; the ventilation control equipment is connected with the inspiration branch, the high-frequency oscillation generation equipment and the active expiration equipment, in the inspiration stage, the high-frequency oscillation generation equipment is controlled to generate high-frequency oscillation for gas of the inspiration branch according to a preset high-frequency oscillation frequency, and the high-frequency oscillation gas generated by the high-frequency oscillation generation equipment is output through the inspiration branch and the patient pipeline; in the expiration stage, the active expiration equipment is controlled to actively extract gas expired by the patient through the patient pipeline according to the preset high-frequency oscillation frequency.

The invention provides a respiration control method and device and an intelligent respirator, and relates to the technical field of respiration protection and auxiliary equipment.The method comprises the steps that an air exhaust assembly is controlled to inflate an air bag; determining a breathing stage of the user according to the collected breathing data; the breathing data comprises inspiration flow data and expiration pressure data, and the breathing stage comprises an inspiration stage and an expiration stage; in the inspiration stage, the air outlet valve of the airbag is opened, and the air outlet valve of the respirator body is closed; an air outlet valve of the airbag communicates with the inner side of the intelligent respirator; in the expiration stage, the air outlet valve of the air bag is closed, and the air outlet valve of the respirator body is opened. According to the technical scheme provided by the invention, breathing obstruction after the user wears the respirator can be reduced, the resource utilization rate and the operation safety of the user are improved, and then the user experience can be improved.

A breath-actuated jet nebulizer is provided, having a body enclosing a gas jet that creates a Venturi effect. The Venturi requires a baffle in close proximity to the gas jet. The baffle is movable in response to the inhalation of the patient, such that the baffle has a default (resting) position distal to the gas jet such that no Venturi effect is created, and no nebulization occurs. During the inhalation phase of a breathing cycle, a diaphragm flexes and pushes the baffle into close proximity with the Venturi gas jet, such that a Venturi effect is created that causes a low pressure zone in proximity to one or more liquid orifices that draw a drug solution into the Venturi, where the solution is nebulized. Also disclosed is an exhalation filter to prevent infectious particles from the patient from escaping and endangering nearby caregivers.

The disclosure relates to a control system for a blood flow assistance device comprising a pump. The control system is configured to control operation of the pump based on a respiration cycle having an inspiration phase and an expiration phase such that the pump is operated in a first mode of operation in the inspiration phase and a second mode of operation in the expiration phase. The first mode of operation is different to the second mode of operation.

To provide a control unit capable of reliably identifying opening and / or closing of at least a part of a respiratory organ during ventilation of a patient.SOLUTION: The respiratory device 1 comprises a breathing air connection 3, which is connected to the respiratory organs 15 of the patient and makes it possible to ventilate the patient with breathing air, an actuator device 5 for supplying the breathing air connection with a breathing air flow 7, and a sensor device 9 for generating measurement data 11 relating to the ventilation. The control unit 13 of the ventilator is configured to generate a control signal 25 for controlling the actuator arrangement to perform a ventilation maneuver in which at least a part 17, 19 of the respiratory tract is opened in an inspiration phase and / or closed in an expiration phase, and to generate measurement data, wherein the measurement data indicate a pressure-dependent curve of a volume of at least one breathing gas inhaled by the patient in the inspiration phase and / or exhaled in the expiration phase as a function of the pressure of the breathing air.SELECTED DRAWING: Figure 1