16 results about "Expiratory gas flow" patented technology

The invention provides a lung expiration training system for nursing a patient outside a chest, which relates to the technical field of medical rehabilitation training and comprises a respiratory signal acquisition module, a main control and signal processing module, a feedback and excitation module and a data management and scheme customization module, the respiratory signal acquisition module is used for acquiring an instantaneous pressure difference signal in the expiration process of a patient in real time by utilizing a differential pressure type flow sensor; the main control and signal processing module converts the pressure difference signal into instantaneous flow, obtains an expiration flow-time curve, a primary expiration amount and expiration efficiency based on discrete sampling, smooth operation and integral calculation, and calculates an error sum of squares and a curve goodness of fit to form a comprehensive control amount; the feedback and excitation module provides visual, auditory or tactile feedback according to the comprehensive control quantity, and can present a gamification interface to guide the patient to adjust the breathing rhythm; the data management and scheme customization module is used for setting a personalized training scheme and recording training data, and the trend analysis unit generates a rehabilitation trend report based on historical indexes.

The invention discloses an electric turbine anaesthesia machine with an automatic air supply function of an air storage bag and a method, and the anaesthesia machine comprises a turbine which is used as an active inspiration air source; a detachable air storage bag; an air supply one-way valve; the breathing circuit is connected between the turbine outlet and the patient end and comprises an inspiration branch provided with a flow diaphragm, an expiration branch provided with an expiration EV valve and an expiration flow diaphragm, and a patient breathing circuit tank assembly containing the air storage bag and the soda lime tank; a plurality of sensors; the control unit is electrically connected with and controls the turbine and the expiration EV valve, receives signals of the sensor and is used for achieving different breathing ventilation modes. According to the anesthesia machine and method, turbine driving is adopted, the tidal volume adjusting range is wide, and physical limitation of a folding bag is avoided; the air storage bag is externally arranged and replaceable, so that cleaning and maintenance are facilitated; a one-way valve automatic gas supply mechanism ensures continuous and stable gas supply; the device supports various breathing modes, and is suitable for various scenes such as anesthesia maintenance, postoperative awakening, oxygen therapy and the like.

To provide a user interface capable of easily confirming evaluation of a daily fluctuation of an exhalation flow rate.SOLUTION: A program for displaying a measurement result of an exhalation flow rate on a display device in a graph causes a computer to execute display control for displaying a bar graph connecting a maximum and a minimum in the graph for each day on the basis of a plurality of measurement values of the exhalation flow rate measured in one day and causing the display device to perform identification display for making visibility different according to an evaluation value of a daily fluctuation of the plurality of measurement values.SELECTED DRAWING: Figure 3

The invention relates to the field of intelligent testing, and discloses an anaesthesia machine testing method, device and equipment and a medium, and the method comprises the steps: controlling an anaesthesia machine to close an exhaust port of a mechanical ventilation loop of the anaesthesia machine, transmitting gas to the mechanical ventilation loop until the airway pressure of the mechanical ventilation loop reaches a preset testing pressure, stopping gas transmission, and maintaining a preset pressure stabilization duration, recording the initial pressure, the highest pressure and the end pressure in the gas transmission process through a pressure sensor of the mechanical ventilation loop; the gas conveying flow, the inspiration flow and the expiration flow in the gas conveying and preset pressure stabilizing duration maintaining process are collected; and according to the initial pressure, the highest pressure, the end pressure and the corresponding initial moment, the highest moment and the end moment, combining the gas transmission flow, the inspiration flow and the expiration flow, calculating the leakage rate of the mechanical ventilation loop and the pipeline compliance, and according to the leakage rate of the mechanical ventilation loop and the pipeline compliance, obtaining a test result. The problems of high test cost and complex operation of the anaesthesia machine in the prior art are solved.

This utility model provides a respiratory training device for respiratory function training, relating to the field of respiratory function training technology. It includes a lung flute body, with a connecting tube fixed to the output end of the lung flute body. A connecting tube is provided at the end of the connecting tube away from the lung flute body, and a mask is fixed to the end of the connecting tube away from the connecting tube. Supports are fixed to both ends of the outer wall of the lung flute body. The mask design transforms the traditional mouthpiece at one end of the connecting sleeve into a mask-type mouthpiece, preventing air leakage during patient exhalation and improving training effectiveness. Furthermore, the strap design allows the mask to be securely attached to the user's face, preventing accidental drop and enhancing stability. Additionally, the device incorporates a flow sensor to accurately measure the airflow velocity and flow rate during exhalation. By continuously monitoring the expiratory flow rate data, it can observe whether the expiratory flow rate has increased after a period of lung flute training.

An inhalation device includes a housing defining an air flow channel, a pressure sensor configured to detect air flow within the air flow channel, and a piezoelectric driven ejector configured to eject droplets of a fluid into the air flow channel. A controller is electrically coupled to the pressure sensor and the piezoelectric driven ejector. During an initialization phase in which a user takes a set number of deep breaths, the controller determines a trigger point based on measured inhalation flow. The pressure sensor generates a peak inspiratory flow measurement based on a minimum pressure during inhalation and a pulmonary output based on a maximum flow achieved during exhalation. During a dosing inhalation, the controller actuates the piezoelectric driven ejector when the trigger point is reached to dispense a dose of the fluid. The device may further generate pulmonary health management information based on inspiratory and expiratory flow measurements.

The invention discloses a child respiratory training device integrating respiratory muscle strength detection and muscle strength training, which comprises a main body shell, a respiratory interface and a pressure detection unit, the respiratory interface is arranged at the front end of the main body shell, the pressure detection unit is located in the main body shell, and a multi-stage pressure regulation chamber is arranged in the main body shell. The multi-stage pressure adjusting cavity comprises a first pressure cavity, a second pressure cavity and a third pressure cavity which are communicated in sequence, the pressure cavities are connected through adjustable resistance valves, and the opening degree of the adjustable resistance valves is automatically adjusted by an intelligent control module according to breathing parameters of a user; a two-way flow sensor is arranged in the first pressure cavity and can detect inspiration flow and expiration flow at the same time. And a vortex regulator is mounted in the second pressure cavity and comprises a rotatable guide vane and a driving motor.

The application discloses a kind of based on multi-source data fusion expiratory nitric oxide detection method, system and equipment.Belong to medical detection technical field.It includes: using phased multitask learning framework, utilize standard gas data training model to master the basic nonlinear response of sensor and environmental cross sensitivity;Then, the clinical expiratory real sample data are fused, and the model is consolidated physical law while learning the ability to suppress complex expiratory matrix effect and individual difference interference by multitask learning.Training completed lightweight artificial intelligence correction model is deployed in embedded microprocessor, and can carry out integrated intelligent correction to real-time acquisition sensor signal, environmental temperature and humidity and expiratory flow.The application breaks through the performance limit of commercial sensor, realizes the sub-ppb level ultra-sensitive detection of expiratory nitric oxide and high clinical consistency output, and has strong environmental robustness, provides low-cost, high-precision and reliable solution for primary medical care and family health monitoring.

The application provides a VR respiratory rehabilitation training system based on gas sensing and terminal virtual mapping, adopts a BLE peripheral to collect nose / mouth-inhale / exhale flow signals (including a special detection device, and a reminder is triggered when the nose / mouth-inhale / exhale is not used) and mouth-exhale flow signals in real time, generates individualized inhale relative indexes and drives the water absorption and water spraying actions of the VR scene through filtering and dynamic calibration. The system supports two fire extinguishing scene modes, inhale and exhale detection is enabled and the user is guided to master the correct method of 'nose / mouth-inhale / exhale + mouth-exhale' during the initial training, and the training time is strictly controlled within 10 minutes. The training amount is quantified and visual feedback is realized through an integral model, the difficulty is automatically adjusted according to the historical performance, and an integral ranking function is newly added. The data only retains feature abstract, integral statistics and desensitization ranking information, and the privacy safety is ensured. The scheme has the advantages of low contact, portability and interesting, and is suitable for children or adult lung function rehabilitation and home training scene.

A present ventilator system for detecting and treating concurrent chronic obstructive pulmonary disease (COPD) and overlap syndrome of obstructive sleep apnea (OSA events) includes a pressure generator for generating a pressurized flow of breathable gas for delivery to an airway of a subject, a sensor(s) for generating an output signal conveying information related to a parameter of the breathable gas, and a processor(s) operably connected to the sensor(s) and the pressure generator, configured to detect the presence of an OSA event and / or expiratory flow limitation (EFL) in the subject based on the output signal. In response to detecting the concurrent presence of an OSA event and EFL, the processor is configured to determine an OSA event therapy parameter for treating the detected OSA event in the subject, determine an EFL therapy parameter for treating the detected EFL in the subject, determine a priority treatment based on a comparison between the OSA event therapy parameter and the EFL therapy parameter, and control the pressure generator to deliver the determined priority treatment.

The invention relates to the technical field of respiratory rehabilitation equipment, in particular to an airway clearance device capable of adaptively adjusting oscillation frequency based on fluid resonance, which comprises a shell and a mouthpiece, a dehumidification mechanism is arranged on one side of the shell, a flow guide mechanism is mounted in the shell, the flow guide mechanism divides the space in the shell into an air inlet cavity and a vibration cavity, and the air inlet cavity is communicated with the vibration cavity. The input part and the output part of the dehumidification mechanism are respectively communicated with the mouthpiece and the air inlet cavity through fluid; an oscillation plate mechanism is mounted in the vibration cavity and is in driving connection with the moisture absorption part of the dehumidification mechanism; and a fixed magnet is mounted on the oscillating plate mechanism. In the using process, when the expiration flow is attenuated, the swinging amplitude of the oscillation plate is automatically reduced, so that the vibration frequency is improved, frequency reduction caused by factors such as lung function reduction of a user or insufficient power in the later period of expiration is effectively compensated, the effective treatment time of the device is widened, the duration time of the resonance effect is prolonged, and the treatment effect of the device is improved. Therefore, the continuity and the stability of the treatment effect in a single expiration period are ensured.

The application discloses an intelligent evaluation system for ventilation function examination, and solves the problem that the quality evaluation of ventilation function examination is mainly based on subjective feeling, lacks reasonable and objective evaluation standards, and is prone to evaluation errors and confusion, and the technical scheme is as follows: a lung function instrument for measurement, a VC measurement and judgment module for judging the measurement result of vital capacity, a curve display and judgment module for synchronously measuring and displaying a forced vital capacity curve and a maximum expiratory flow volume curve, a measurement reminding module for measurement reminding, and a processing and evaluation module for evaluating the measurement result and selecting a corresponding curve for parameter calculation.The intelligent evaluation system for ventilation function examination can objectively and accurately evaluate the quality of ventilation examination, and significantly improves the accuracy and efficiency of lung ventilation function examination.

The embodiment of the invention provides a cough peak flow rate control method and device, electronic equipment and a storage medium, and relates to the technical field of instrument control. The method comprises the following steps: acquiring a gas pressure difference signal, and calculating an analog voltage signal based on the gas pressure difference signal; acquiring expiration flow data, and fitting a plurality of expiration flow data and the forced vital capacity in a preset time period; calculating a corresponding target cough peak flow rate based on the forced vital capacity; and adjusting the opening degree of a valve body of the expectoration machine to enable the expectoration machine to output the target cough peak flow rate. According to the method, the cough peak flow rate required by a patient can be well analyzed; the valve body is opened and closed according to the needed cough peak flow rate, and power waste is reduced. And the power can be well saved.

The invention provides a metabolism detection device and method based on an adjustable mixing tank. The metabolism detection device is composed of a human body breathing gas collection module, an expired gas concentration detection module, a calibration gas supply module, an electromagnetic valve switching module, a control module and a computer. The human body breathing gas collecting module is used for separating breathing gas, providing a breathing channel, detecting the expiration flow and collecting and physically averaging the gas; the expired gas concentration detection module is used for detecting oxygen and carbon dioxide concentrations of gas to be detected; the calibration gas supply module provides calibration gas; the electromagnetic valve switching module provides gas switching selection; the control module is responsible for controlling each component and acquiring signals; and the computer is responsible for data processing, index calculation and result display. The detection method comprises the following steps: firstly calibrating the concentration, then carrying out a motion or resting metabolism test based on spontaneous respiration, and finally calculating the metabolism index according to the measured gas concentration and flow data. The method can be applied to metabolism detection scenes of resting and different exercise intensities, and is reliable in test and simple in engineering realization.

The application discloses a kind of based on multi-source data fusion expiratory nitric oxide detection method, system and equipment.Belong to medical detection technical field.It includes: using phased multitask learning framework, utilize standard gas data training model to master the basic nonlinear response of sensor and environmental cross sensitivity;Then, the clinical expiratory real sample data are fused, and the model is consolidated physical law while learning the ability to suppress complex expiratory matrix effect and individual difference interference by multitask learning.Training completed lightweight artificial intelligence correction model is deployed in embedded microprocessor, and can carry out integrated intelligent correction to real-time acquisition sensor signal, environmental temperature and humidity and expiratory flow.The application breaks through the performance limit of commercial sensor, realizes the sub-ppb level ultra-sensitive detection of expiratory nitric oxide and high clinical consistency output, and has strong environmental robustness, provides low-cost, high-precision and reliable solution for primary medical care and family health monitoring.

This invention discloses a respiratory guidance device and its control method and system, relating to the field of medical device technology. The device includes a gas supply unit, a disposable lip-holding tube, an exhalation detection module, and a feedback module. The lip-holding tube has a middle lip-holding section with a breathing port. When the patient is in working condition, they hold this lip-holding section with their lips, the breathing port being located between the lips and outside the teeth, allowing the upper and lower teeth to close normally, achieving natural swallowing without stress on the masseter muscle. The gas supply unit provides a constant flow of clean gas, the exhalation detection module collects the patient's expiratory flow rate in real time, and the feedback module provides guidance prompts based on the expiratory status, helping the patient adjust to the correct oral breathing mode in real time. This invention, through its unique lip-holding tube design and intelligent feedback guidance, fundamentally solves the problem of nasal exhalation causing endoscope fogging during endoscopic examinations, significantly improving patient comfort and compliance, and can be extended to scenarios such as nebulizer therapy and postoperative monitoring.