512 results about "Exhalation" patented technology

The invention relates to the technical field of atomization rate control, in particular to an intelligent atomization compliance monitoring method and system for children. The method comprises the following steps: firstly, acquiring expiration flow velocity, inspiration flow velocity and multi-direction motion acceleration time sequence data of a child in a historical monitoring period, and reflecting breathing and behavior action conditions; dynamically analyzing the numerical characteristics of the expiration flow velocity and the inspiration flow velocity to divide a respiratory cycle, and analyzing the cycle length, the inspiration flow velocity cumulant and the like to construct a respiratory characteristic vector; screening a target monitoring period based on the breathing feature vector and the period number similarity; further analyzing the motion acceleration change and accumulation characteristics in the target monitoring period, and quantifying the behavior compliance expression degree; the behavior compliance expression degree and the breathing feature vector are deeply fused, a'breathing state-behavior cooperation 'joint evaluation model is established, the breathing and behavior states of children are dynamically recognized, the medicine atomization rate is accurately adjusted, and effective deposition of lung medicine is improved.

The present application relates to a kind of respiratory synchronous diaphragm nerve electric stimulator in vitro, belong to medical equipment technical field.The technical scheme of a kind of diaphragm nerve electric stimulation based on real-time breathing signal synchronization trigger is proposed for the problems of high weaning failure rate and quality of life decline caused by VIDD.The technical scheme points include: detecting inspiration negative pressure signal through nasal cavity air pressure sampling tube, control unit dynamically adjusts trigger threshold according to negative pressure signal, when negative pressure is lower than preset value and waveform slope meets the standard, trigger electric stimulation module to output biphasic pulse, pulse parameters include positive and negative alternating waveform, width 0.1ms to 1ms, frequency 10Hz to 50Hz and current intensity 5mA to 30mA, and strictly limit electric stimulation to be only output in inspiration cycle, and expiration cycle is completely blocked stimulation by hardware switch circuit.It is mainly suitable for intensive care and rehabilitation therapy scene, effectively prevent and treat VIDD, improve patient weaning success rate and quality of life.

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 belongs to the technical field of medical instruments. In order to solve the problems that an existing lung function detection device is low in detection result accuracy and cannot detect parameters such as the residual gas amount, the device for assisting in detecting the lung function of the chronic obstructive pulmonary disease patient is provided and comprises a detection device, a helium bottle, a sealing mask, a nose clip, an air suction pipe, an air outlet pipe, a sealing unit and a plugging switching mechanism; one end of the air suction pipe is connected with the helium tank, and the other end is connected with the plugging switching mechanism; one end of the air outlet pipe is connected with the detection device, and the other end is connected with the plugging switching mechanism; the nose clip is arranged at the upper end of the sealing mask. According to the embodiment of the invention, a subject cannot inhale external air and cannot exhale in-vivo air from the nasal cavity through the nasal clip, and the plugging switching mechanism can thoroughly open the pipe orifice of the air outlet pipe or the air inlet pipe, so that the subject can inhale or exhale easily, the detection accuracy is high, and the detection efficiency is high. And the method can be combined with a closed helium dilution method to obtain parameters such as residual gas amount.

A combined system of a concealed closed tracheoscope and an artificial airway breathing circuit includes an artificial airway breathing tubing and a tracheoscope. The artificial airway breathing tubing includes an inhalation circuit and an exhalation circuit that are connected through a connecting tube. The tracheoscope includes a handle portion and an insertion portion connected to the handle portion. The tracheoscope handle portion wraps around a section of the exhalation circuit. The tracheoscope insertion portion is hidden in the extendable breathing circuit, which extends and retracts to make the tracheoscope insertion portion advance or retreat in a closed condition. The tracheoscope handle function assembly cleverly wraps around the surface of the breathing circuit tubing, organically combining the functions of the tracheoscope handle and the breathing circuit. Meanwhile, the tube interface can be cleaned to keep the tracheoscope clean and unobstructed, such that the service life of the tracheoscope can be extended.

The invention relates to the technical field of atomizers, and particularly discloses a pediatric medical emergency atomizer which comprises a compressor body and an atomizing cup. The two sides of the breathing mask are respectively and fixedly connected with a bandage; the medical emergency atomizer for the department of pediatrics comprises a breathing mask, two bandages, a wearing mechanism, an expiration frequency monitoring mechanism and an atomization rate regulating and controlling mechanism, the wearing mechanism is connected with the two bandages, the expiration frequency monitoring mechanism is connected with the wearing mechanism, and according to the medical emergency atomizer for the department of pediatrics, the breathing mask is worn on the face of a patient through the wearing mechanism; if the breathing frequency of the child patient is rapid, airflow exhaled by the child patient impacts the breathing mask at the moment, the bandage is pulled when the breathing mask is impacted by the airflow, the expiration frequency monitoring mechanism is triggered through the bandage, and the atomization rate regulation and control mechanism is controlled to work according to the rapid expiration degree of the child patient; the atomization rate regulation and control mechanism regulates the flow amount of high-speed airflow entering the atomization cup from the connecting guide pipe.

Disclosed is a breathing adjustment apparatus, comprising: a body provided with a breathing channel, the body being of a hollow tubular structure; a first opening disposed at one end of the body and configured to be inserted into the mouth of a user; a second opening in communication with the first opening, wherein the second opening is disposed at the other end of the body and configured for exhalation; and an inner core housed within the body for providing a breathing resistance; wherein air enters the body through the first opening and reaches the second opening through the inner core.

The invention relates to the technical field of auxiliary medical treatment, in particular to an oxygen generator on-demand pulse oxygen supply control method based on respiratory rhythm perception, and the method comprises the steps: obtaining a plurality of respiratory pressure sequences, and dividing the respiratory pressure sequences into an expiratory phase and an end-expiratory transition section; determining a signal confidence coefficient according to the performance of the expiratory phase and the end-expiratory transition section in the respiratory pressure sequence; a regularization item of physiological rationality constraint is introduced into the regression loss function, and time sequence smooth constraint is applied to a model cell state updating process to obtain an optimized respiratory rhythm prediction model; taking the three-dimensional feature vector as input data of a respiratory rhythm prediction model to obtain an end-expiratory stationary section duration ratio of a next respiratory cycle; and determining a pre-judgment window period from the beginning of inspiration according to the duration proportion of the end-expiratory stationary section of the next respiratory cycle, and controlling pulse oxygen supply of the oxygen generator by taking the pre-judgment window period as a pulse trigger countdown parameter of the oxygen generator, thereby realizing accurate synchronization of the oxygen supply action and the inspiration action.

This disclosure relates to systems and methods for monitoring sedated patients that are receiving supplemental oxygen flows. A method of monitoring a patient's breathing while sedated includes identifying an end expiratory pause in the patient's breathing pattern and obtaining a first respiratory signal corresponding to a nasal pressure of a patient. The method may also include delivering a pulse of high-flow oxygen during the end expiratory pause at a rate of about 30 liters-per-minute (L / min) and delivering the pulse of high-flow oxygen during the end expiratory pause for less than 0.5 seconds. The method may further include measuring a peak nasal pressure and a peak oxygen flow and synthesizing a second respiratory signal. The second respiratory signal may correspond to the peak nasal pressure and the peak oxygen flow, and may be normalized for the patient. The method may additionally include determining the patient's breathing pattern, rate, or frequency.

The invention relates to the technical field of respiratory function monitoring, and discloses a pulmonary ventilation blood flow distribution real-time monitoring method and evaluation system based on a sensor. The method comprises the following steps: acquiring multi-modal data such as a blood oxygen saturation waveform, an airflow rate waveform and a thoracic pressure waveform of a lung area; performing time synchronization processing on the data to generate a time alignment sequence; dividing the data into an inspiration phase, an expiration phase and a transition phase according to a preset rule; extracting time-frequency domain features from each phase segment, and constructing a multi-dimensional respiration feature matrix; identifying an abnormal breathing mode and marking an abnormal section through breathing phase switching frequency analysis; decomposing the normal segment feature matrix by using a lung pathological feature library to generate a pathological feature vector; a pathological feature vector is optimized through a ventilation and blood flow coupling model; and carrying out abnormal region positioning based on the lung pathology propagation network, and generating a lung partition function evaluation result. The method realizes non-invasive and real-time monitoring, and is suitable for scenes such as clinical monitoring and rehabilitation evaluation.

According to the mode switching method, the controller, the airway clearance equipment, the storage medium and the program product provided by the embodiment of the invention, the oscillation airflow under different oscillation frequencies is output after operation is performed for the preset duration in the airway oscillation mode or the mechanical inhalation and exhalation mode, and the oscillation airflow under different oscillation frequencies is output for any oscillation frequency. The method comprises the following steps: acquiring response information of a user to oscillation airflow at oscillation frequencies, determining an impedance parameter of the user according to the response information at each oscillation frequency, determining an operation mode at the next moment according to the impedance parameter, and executing the operation mode, according to the method, the response information of the user under the oscillation airflow is obtained to determine the impedance parameter representing the blocking condition of the respiratory system of the user, so that the adopted airway clearance mode is automatically adjusted according to the real-time breathing state of the user, and the sputum discharge effect is improved.

The present disclosure relates to a calm expiration phase, forced vital capacity determination and diagnosis method, system and dynamic X-ray machine, and relates to the technical field of calm expiration phase, forced vital capacity determination and diagnosis. The calm expiration phase determination method comprises: performing lung field segmentation on dynamic multiple X-ray two-dimensional chest images in the breathing process to obtain corresponding multiple X-ray two-dimensional lung field mask images; and determining the calm expiration phase in the breathing process according to multiple lung field mask areas of the multiple X-ray two-dimensional lung field mask images and lung field mask area change rates corresponding to the multiple lung field mask areas. The present disclosure can realize calm expiration phase, forced vital capacity determination and diagnosis.

Systems and methods for lung function parameters are disclosed herein. An electrocardiographic (ECG) device acquires ECG signals from a patient during a breathing cycle. A neural network trained to perform ECG-derived respiratory (EDR) analysis extracts respiratory information from the acquired ECG signals. A processor accesses the neural network. Respiratory features are extracted from the ECG signals. A forced expiratory volume (FEV1) of the patient during the breathing cycle is determined using the respiratory features. A report of lung function is generated using the FEV1.

The utility model discloses a breathing pipeline device capable of adjusting and releasing airway pressure, which comprises a breathing sputum excretion device body, a fourth connector, an air valve main body, an adjusting assembly and a sputum excretion assembly, and the air valve main body is used for blocking or opening an airflow channel in the fourth connector; the sputum excretion assembly is used for providing an upward opening moving stroke for the air valve assembly, one end of the sputum excretion assembly is installed on the breathing sputum excretion device body, and the other end of the sputum excretion assembly is installed on the top of the air valve body. The adjusting assembly is arranged on the periphery of the breathing sputum excretion device body and the periphery of the sputum excretion assembly in a sleeving mode. The distance between the breathing sputum excretion device body and the sputum excretion assembly is adjusted through the adjusting assembly, and then the pressing force of the sputum excretion assembly for pressing the air valve assembly is adjusted; therefore, the breathing intensity of the patient during breathing training can be adjusted, and the device is suitable for breathing rehabilitation training of various moderate and mild patients in the lung department and contributes to expectoration of sputum.

The utility model relates to an oscillating positive expiration pressure sputum excretion device which comprises a holding shell, a working cavity is formed in the holding shell, an air channel is fixedly installed above the holding shell, a blocking piece is fixedly installed in the air channel, an air inlet is formed in the position, corresponding to the front portion of the blocking piece, of the upper end face of the holding shell, and an air inlet pipe is fixedly installed below the air inlet. An air nozzle is fixedly installed on one side of the tail end of the air inlet pipe, an oscillation box is arranged at the top end of the air nozzle, and an oscillation piece is rotatably installed in the oscillation box. Through the design that the oscillation box is arranged in the working cavity and the oscillation piece is installed in the oscillation box, compared with a traditional oscillation structure with a single-ball blocking structure, the oscillation piece and a cavity separated, the oscillation structure is more stable; the second air outlet for adjusting the air pressure through the adjusting knob is matched with the design of the transparent air flow indicating tube, multi-gear adjustment and visualization of the air pressure are achieved, the water content in exhaled air is effectively reduced through the design that the water vapor filtering cotton is arranged in the blocking cavity, and the service life of the product is prolonged.

The invention relates to the technical field of medical instruments, and discloses a respiratory efficiency feedback-based chronic obstructive pulmonary disease home rehabilitation device which comprises a respiratory training rehabilitation device body, an extension tube is arranged at the front end of the respiratory training rehabilitation device body, and a respirator is fixedly connected to the end, away from the respiratory training rehabilitation device body, of the extension tube. A feedback assembly is arranged in the middle of the extension pipe, an adjusting assembly is arranged in the feedback assembly, a supplementing assembly is arranged on the side edge of the feedback assembly, the feedback assembly comprises a hollow box fixedly connected to the middle of the extension pipe, a center shaft movably penetrates through the upper portion of the hollow box, and air flow blades are distributed on the outer surface of the center shaft in an annular array mode. By arranging the feedback assembly and the middle of the extension tube, the feedback assembly can be driven to operate in the breathing process of a patient, the feedback effect is achieved through the moving track of the red tying cloth, the feedback situation changes along with the breathing rate of the patient, expiration and inspiration are fed back separately through the one-way bearing, and the feedback effect is more detailed.

The invention relates to the technical field of medical instruments, in particular to a respiration triggering method and system based on multi-signal fusion and a self-adaptive threshold value, specifically, a multi-signal fusion triggering scoring method is adopted, and inspiration and expiration phase state judgment is conducted in combination with net flow, pressure and derivatives of the net flow, the pressure and the derivatives of the net flow, the pressure and the derivatives of the pressure. The inspiration and expiration phase switching needs to meet triple conditions of a threshold value, a derivative and duration time; leakage estimation and baseline correction are carried out in an expiration stable section, and in addition, a confirmation mechanism and a non-response period are introduced, so that phase jitter is reduced; and meanwhile, the threshold value and the weight can be dynamically and adaptively updated along with the respiratory statistical characteristics, an anomaly detection and rollback strategy is executed, and the continuity and the safety of ventilation are guaranteed under the conditions of cough, swallowing or sensor failure. Furthermore, the system adopts a modular structure, so that embedded implementation and upgrading are facilitated.

Post occlusion air flow measurement data from an initially occluded flow tube has a peak followed by a waveform that in an ideal model presents a smooth linear slope indicative of airway resistance. In patients with lung function issues, the waveform has a decaying oscillation that is difficult to fit. By collecting post-occlusion flow spike data from a flowmeter initially occluded at a beginning of quiet exhalation and a pressure value in the flowmeter prior to release of occlusion, a plurality of points in time at which a second derivative of the flow spike data beginning with a first zero when the second derivative first changes from positive to negative are determined so that a value for total airway resistance can be calculated using a function of the flow spike data at the plurality of points in time and the pressure value.

To more accurately detect a respiratory state of a patient by more accurately detecting pressure fluctuation by the expiration and inspiration of the patient in a respiration detector.SOLUTION: In a respiration detector of the present invention, a gas supply source 1, a nozzle part 6, and a respiration detection part 2 are arranged in series in the order of description in the upstream and downstream directions through a feed passage 7 and a connection passage 8 of a cannula 3. A first throttle part 21 is formed in a main passage part 16 of the connection passage 8 of the cannula 3, and a second throttle part 22 is formed in one branch passage part 17 of two branch passage parts 17 and 18 of the connection passage 8.SELECTED DRAWING: Figure 1

Methods for increasing forced expiratory volume in one second (FEV1) in a patient with asthma are presented, comprising administering to the patient an effective amount of benralizumab or an antigen-binding fragment thereof.

The invention belongs to the technical field of positioning devices, and particularly relates to a positioning device for trauma at the joint of neck, chest, four limbs and thoracic cavity, which comprises a first gasket, and a second gasket is arranged on one side of the first gasket; the telescopic structure comprises a plurality of first chest belts which are fixedly connected to the two ends of the first gasket respectively, a plurality of second chest belts are installed at the two ends of the second gasket in a sliding mode, and elastic belts are detachably installed between the first chest belts and the second chest belts. According to the thoracic cavity limiting device, the limit borne by the thoracic cavity when a patient inhales can be gradually increased along with expansion of the thoracic cavity through the telescopic structure, the situation that the thoracic cavity is difficult to expand due to the fact that the initial limit borne by the thoracic cavity is too large is reduced, and the limit borne by the thoracic cavity when the patient exhales can be gradually reduced along with contraction of the thoracic cavity through the telescopic structure; the situation that the chest is difficult to limit by the bandage after being shrunk due to the fact that the initial limit of the bandage to the chest is too small is reduced.

Described herein is a respiratory care apparatus capable of performing multitude of therapy for secretion management and breath assistance therapy. The respiratory care apparatus comprises an electromechanical air router assembly (EARA) and an interfacing assembly. The EARA includes independent first and second pressure generating sources for assisted inhalation / insufflation and assisted exhalation / exsufflation process. The interfacing assembly includes a patient interface port and a patient interface tube. The interfacing assembly forms two pneumatically separate paths. The respiratory care apparatus is configured to generate alternate positive and negative pressure at the patient interface port for assisted inhalation / insufflation and assisted exhalation / exsufflation processes respectively. The assisted inhalation / insufflation and assisted exhalation / exsufflation processes are carried out independently through separate conduits / passages to reduce contamination and infection. Further, the respiratory care apparatus comprises a garment which oscillates due to alternate positive and negative pressure generation and provides therapy to the patient.

The application belongs to the technical field of medical apparatus and instruments, and particularly relates to a pressing type oxygen inhalation device for emergency treatment, which comprises an elastic air bag, an air inlet unit, an air outlet unit and an oxygen inhalation mask, the elastic air bag inhales oxygen through the air inlet unit, and the oxygen is supplied to a patient through the air outlet unit and the oxygen inhalation mask, and the device further comprises a fixing column coaxially arranged in the elastic air bag, wherein two movable rings are slidably arranged on the two sides of the fixing column in the elastic air bag, a plurality of elastic metal positioning pieces are arranged between the two movable rings, and the fixing column is provided with a driving mechanism for driving the two movable rings to move. The device can stably control the oxygen supply depth, avoid excessive oxygen supply or insufficient ventilation, intuitively display the exhalation state of the patient, optimize the pressing frequency, and quickly adjust the positioning parameters to meet the emergency treatment requirements.

The present disclosure provides an electrical stimulation device and a control method thereof. The electrical stimulation device comprises: an electrode, which is in contact with a target object in a use state, for electrically stimulating a target tissue of the target object; a sensor, which is used to collect respiratory data of the target object, the respiratory data comprising at least one of: motion data, exhalation temperature data, thoracic pressure data, electrical impedance data, blood oxygen data, and posture data; and a controller, which is electrically connected with the sensor and the electrode, and is used to: determine a predicted sleep state of the target object based on the respiratory data collected by the sensor; determine an output parameter of a stimulation signal based on the predicted sleep state; and control the electrode to output the stimulation signal based on the output parameter of the stimulation signal, so as to stimulate the target tissue. The sleep quality of the target object when wearing the electrical stimulation device is improved, and the stimulation effect of the stimulation signal is improved.

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.

A method for ventilating a patient includes providing pressure into a patient's airway over a period of time that includes a plurality of inhalation periods and a plurality of exhalation periods. The pressure is at an inspiratory positive airway pressure during the inhalation periods, and the pressure is at an expiratory positive airway pressure during the exhalation periods. The expiratory positive airway pressure less than the inspiratory positive airway pressure, and the expiratory positive airway pressure is configured to maximize lung compliance of the patient.

The invention discloses a respiratory training device for the department of cardiology. The invention relates to the technical field of biomedical engineering and medical instruments. Comprising a bag body 6 in which oxygen is stored and an interaction mask 1 which is communicated with the output end of the bag body 6 through a hose and interacts with a human body; during expiration, air can flow back into the bag body 6 through the one-way valve of the interactive mask 1 to form closed-loop circulation. The driving mechanism 3 performs periodic contraction-expansion motion on the capsule body 6 with a first linear degree of freedom; the adjusting assembly 4 is used for executing self-adaptive deformation adjustment on the bag body 6 with a plurality of second linear degrees of freedom; the annular array type linear actuator 403 realizes multidirectional angle adjustment through a spherical hinge, and is matched with the natural curvature of the bag body 6 in combination with the design of an arc-shaped contact surface, so that the device can adapt to patients with different body types (for example, the chest circumference difference is greater than 30cm) and various breathing modes (for example, the long expiration requirement of a POTS patient).

The application belongs to the technical field of dysphagia rehabilitation, and particularly relates to a cold stimulation device for dysphagia rehabilitation, which comprises a supporting column, a reciprocating electric telescopic rod coaxially and fixedly connected to one end of the supporting column, a semiconductor touch head fixedly connected to a telescopic end of the reciprocating electric telescopic rod, a biting seat fixedly connected to the supporting column, biting air bags fixedly and symmetrically connected to the biting seat, the biting air bags being communicated with the supporting column, and a detection tube fixedly connected to the biting seat. The oral cavity sealing mechanism automatically triggered by biting action can accurately detect the swallowing action according to the negative pressure of the oral cavity. After the effective swallowing action is detected, the stimulation can be paused through a delay start switch, the next round of training can be automatically started after the rest, and the timing and rhythm of each stimulation are ensured to be consistent with the physiological response. The normal exhalation can be realized while the oral cavity sealing space is formed, and the breathing safety is ensured.

A nasal respiratory apparatus with end tidal sampling according to various implementations is intended to support providing oxygen, ventilation, and end tidal CO2 sampling of the patient oxygenation during pre-operation, undergoing anesthesia intra-operation, and post-operation during recovery. Additional features of the device include an oral shield / scoop that allows for sampling of orally ventilated end tidal CO2 and a bite block that allows for oral end tidal CO2 sampling and opens the patient's mouth, allowing for use of an endotracheal tube, head straps, and nares ports.