1039 results about "Exhalation" patented technology

The present application provides a snoring treatment device, including a vibration part, the vibration part is provided with an opening for the inflow of exhaled airflow, an inner cavity connected to the opening, and an exhaust port connected to the inner cavity, and the vibration part is adapted to generate a vibration sound wave with a frequency range of 20 to 200 Hz under the action of the exhaled airflow after the inflow of the exhaled airflow. The snoring treatment device provided by the present application can accurately exercise the upper respiratory tract muscles, making the upper respiratory tract muscles strong, thereby achieving the purpose of treating snoring.

The invention belongs to the technical field of intelligent rehabilitation equipment control, and relates to a multi-parameter feedback regulation and control method for postoperative lung function rehabilitation training, which comprises the following steps: acquiring an electrocardiosignal, a respiration signal and a limb movement signal of a patient; identifying a heart rate fluctuation form of the electrocardiosignal to generate an abnormal fluctuation time period, and analyzing a time difference between an inspiration phase and an expiration phase of the respiratory signal to generate a starting point of respiratory rhythm disorder; judging a cardiopulmonary risk level; the exercise intensity of rehabilitation training equipment is automatically adjusted based on the cardiopulmonary risk level, and meanwhile a regulation and control mode is dynamically selected according to the proportion change of the chest fluctuation amplitude and the abdomen fluctuation amplitude; when the heart rate recovery rate is lower than a preset reference and the respiratory rhythm stabilization time exceeds a critical value, gradually improving the exercise intensity; calculating a motion intensity correction coefficient and triggering a motion posture correction instruction; and generating a rating report containing the cardiopulmonary function fitness. According to the invention, the problem of lack of comprehensive quantitative evaluation of rehabilitation efficiency in the prior art is solved.

Disclosed herein is a medical system (100, 400) comprising: a magnetic resonance imaging system (102) configured for providing a respiratory signal. The respiratory signal is descriptive of a respiratory position as well as of inhalation and exhalation of the subject. The execution of machine executable instructions (140) causes the computational system to repeatedly: perform (200) the individual acquisition of k-space data using the magnetic resonance imaging system; receive (202) the respiratory signal; bin (204) the individually acquired k-space data into one of a predetermined number of k-space bins (148) using the respiratory signal and perform outlier rejection. Execution of the machine executable instructions further causes the computational system to reconstruct (208) a magnetic resonance image for each of the predetermined number of k-space bins to provide a respiratory-state resolved magnetic resonance image (150).

The invention relates to the field of anesthetic concentration regulation and control, in particular to a method for analyzing and evaluating the administration concentration of an inhalation type anesthetic. The method comprises the following steps: firstly, according to characteristic data such as basic physiological data, previous anesthesia sensitivity and operation information of a patient, applying a fuzzy matching algorithm to obtain an initial administration concentration; physiological sign data such as blood pressure, heart rate, pulse oxyhemoglobin saturation and end-expiratory carbon dioxide partial pressure of the patient are monitored in real time in the anesthesia process and compared with a normal range, whether the physiological sign data are abnormal or not is judged, and an adjustment scheme of the administration concentration is determined according to the administration concentration-physiological sign correlation model; after the administration concentration is adjusted, the electroencephalogram double-frequency index is monitored to evaluate the anesthesia depth, the anesthesia depth matching degree is analyzed to judge the adjustment effect, and therefore closed-loop control over the anesthetic administration concentration is achieved. According to the method, the administration concentration can be accurately regulated and controlled, the concentration regulation mechanism is optimized, the safety and effectiveness of the anesthesia process are effectively improved, and a reliable guarantee is provided for clinical anesthesia.

The invention discloses a respiratory therapy system and method based on biofeedback, and belongs to the field of medical instruments, and the therapy method comprises the following specific steps: S1, collecting and recording multiple paths of user physiological parameters; s2, respiratory rhythm extraction is carried out according to the characteristics of the multi-path data; s3, analyzing each piece of feature data to obtain the confidence coefficient of each piece of data, calculating the total confidence coefficient, and rejecting non-ideal data; according to the invention, by realizing coordination of electrical stimulation between diaphragm and abdominal muscles, the effect of synchronizing with breathing of a user is achieved, the expiration ability is improved, the recovery of respiratory muscle functions of a patient is promoted, the muscle strength and endurance are gradually improved, the dyspnea symptom is relieved, the exercise ability and exercise endurance are improved, and the life quality of the patient is improved.

A respirator muscle training device comprises a main unit including at least one adjustable air metering vent, the main unit comprising a stem configured to accept a replaceable mouthpiece; and a replaceable mouthpiece configured to mate with the stem, the replaceable mouthpiece being configured to deliver air flow between the main unit air metering vent and a patient's mouth. The mouthpiece defines at least one supplementary metering channel that predictably modifies a resistance of the respirator muscle training device to user inhalation and / or exhalation through the device. An intermediate component containing sensors and other electronics monitors the flow of air through the training device and provides measured parameters to an external device that can use the measurements in a breathing game.

The present application provides a snoring treatment device, comprising a vibration part, the vibration part is provided with an opening for the inflow of exhaled airflow, an inner cavity connected to the opening, and an exhaust port connected to the inner cavity, and the vibration part is adapted to generate a vibration sound wave with a frequency range of 20 to 200 Hz under the action of the exhaled airflow after the inflow of the exhaled airflow. The snoring treatment device provided by the present application can accurately exercise the upper respiratory tract muscles, making the upper respiratory tract muscles strong, thereby achieving the purpose of treating snoring.

The present invention discloses a non-hysteretic oxygen supply respirator system, comprising a respiratory mask, an inhaling pipe, an exhaling pipe, an oxygen supply chamber, an auxiliary oxygen supply pipeline, and a start-stop cylinder for opening and closing the auxiliary oxygen supply pipeline. The non-hysteretic oxygen supply respirator system in the present invention supplies a small amount of oxygen during the second half of exhaling by providing the auxiliary oxygen supply pipeline, so as to compensate for the amount of oxygen required by a user during the hysteretic time after the respirator senses the inhaling airflow, avoid the situation that the user inhales laboriously due to the hysteresis of inhaling oxygen supply, and give the user a better respiratory experience. The start and stop of the auxiliary oxygen supply pipeline are controlled by the airflow of the exhaling pipe, making the control simple and convenient and the exhaling smoother.

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 utility model discloses a breathing synchronous following oxygen supply nasal oxygen cannula, it includes main tube, control subassembly, branch tube and nasal tip, the control subassembly includes shell, valve body and oxygen supply subassembly, oxygen supply subassembly is equipped with first air chamber and second air chamber inside, first air chamber and second air chamber are equipped with air control subassembly inside, the first air chamber and second air chamber are equipped with air control subassembly inside. A trigger gas path, an oxygen inlet gas path and a pressure maintaining gas path are arranged in the control assembly, an oxygen supply gas path is arranged in the valve body, the gas control assembly controls the first vent hole, the oxygen inlet gas path and the oxygen supply gas path to be opened during inspiration, and the gas control assembly controls the first vent hole to be closed during expiration. According to the nasal oxygen cannula, the breathing synchronous following oxygen supply function is achieved, the oxygen inhalation comfort of a patient is improved, oxygen resources are greatly saved, waste is reduced, and practicability is high.

The utility model relates to the technical field of equipment testing, in particular to a passive following type respirator testing device and system.The device comprises a respiration simulation assembly provided with a passive following type respirator; the muscle simulation assembly is connected with the respiration simulation assembly and used for driving the respiration simulation assembly to move and simulating the expiration and inspiration exchange process of the human body based on the movement of the respiration simulation assembly; and the upper computer is communicated with the muscle simulation assembly and is used for inputting a test instruction to enable the muscle simulation assembly to move and outputting a test result of the passive following type respirator according to the test data of the passive following type respirator. Therefore, the problem that the test accuracy is low due to the fact that the simulated lung lacks a power source and the spontaneous respiration state of human muscles cannot be simulated in the prior art is solved.

The present disclosure relates to systems and methods for controlling a pressure level of a gas mixture delivered to a patient via a pressure support device adapted to provide respiratory support to the patient over time. More specifically, the systems and methods described herein enable accurate detection of active inspiration of a patient and rapid triggering of increased inspiratory positive airway pressure pulses. Further, the described systems and methods rely on patient pressure measured along the turbulent gas flow path, and find particular applications when the pressure support device is configured to provide non-zero positive end expiratory pressure.

The invention relates to a breathing pipeline adapter capable of adjusting the air displacement and a breathing nasal mask.The breathing pipeline adapter comprises a tubular body, a through airflow channel is formed in the tubular body, the tubular body is provided with a first end and a second end, the first end is used for being connected with nasal masks of different models, and the second end is used for being connected with an external breathing pipeline; the exhalation hole group comprises a plurality of exhalation holes, and the multiple exhalation holes are uniformly formed in the circumferential outer wall of the tubular body in an annular array mode and directly communicate with the airflow channel; the adjusting knob is coaxially arranged on the outer side of the tubular body in a sleeving mode, and a through hole is formed in the adjusting knob; the through holes can be aligned with or staggered with different numbers of exhalation holes, and the air displacement of the airflow channel is adjusted. According to the breathing nasal mask, the exhaust area can be adjusted, exhaled air can be exhausted out of the nasal mask more effectively, for a patient with a large amount of exhaled air, the effective exhaust area can be increased, the exhaled air can be exhausted in time, accumulation of the exhaled air in the nasal mask is avoided, and therefore the relapse phenomenon is reduced.

The invention provides a radiotherapy abdominal pressure plate device capable of monitoring abdominal external pressure in real time, and the device comprises a thermoplastic film which is provided with a fastener; the abdominal pressure plate body is fixedly connected to one side of the thermoplastic body film; the pressurizing air bags are distributed on the abdominal pressure plate in an array mode, air inlet valves are arranged on air inlet pipelines of the pressurizing air bags, exhaust valves are arranged on exhaust pipelines of the pressurizing air bags, and air pressure sensors are arranged in the pressurizing air bags; a thin film pressure sensor; the control module is used for judging whether the patient is in an inspiration phase or an expiration phase in real time according to numerical values detected by the multiple thin film pressure sensors, and controlling the air inlet valves or the exhaust valves on the corresponding pressurizing air bags to be opened so as to adjust radiotherapy pressure; and judging the pressure difference according to the detection values of the air pressure sensors on the two adjacent pressurizing air bags and carrying out cooperative compensation. By means of detection of the thin film pressure sensor and the air pressure sensor, the breathing phase is dynamically recognized, pressure is actively released in the inspiration phase, pressure is compensated in the expiration phase, and the displacement error of the target area can be controlled to be smaller than or equal to 2 mm.

The invention relates to an expiration detection and health diagnosis system and method based on a gas sensor, and the system comprises an air pump which is used for collecting a gas sample of a target user, adjusting the gas flow rate and flow direction of the gas sample, enabling the gas sample to meet a preset gas transmission requirement, and directionally transmitting the gas sample through the gas flow rate and flow direction; the gas sensor is used for detecting whether target gas exists in the gas sample and generating a corresponding analog signal under the condition that the target gas exists in the gas sample; and the data processing module is used for converting the analog signal into a digital signal, performing data processing and environment compensation on the digital signal to obtain an expiration detection result, generating health diagnosis information according to the expiration detection result, and displaying the expiration detection result and the health diagnosis information in terminal equipment in real time. Therefore, the problems that in the prior art, portability is poor, airflow control is inaccurate, sensitivity is low, data processing lags behind, and the environmental interference influence is large are solved.

The invention relates to the technical field of high-frequency breathing machines, and discloses a working method of a high-frequency breathing machine based on flow control, the high-frequency breathing machine sequentially outputs a plurality of average airway flows with the same or different sizes and the same or different action time periods according to a set period rule, and the airway flows output in an expiration phase and an inspiration phase are stable. The same or different average airway flows can be output in different inspiration phases and expiration phases; in different action time periods of the high-frequency breathing machine, the output gas flow can be periodically and independently adjusted among different ventilation flow levels; in high-frequency ventilation, the high-frequency ventilation method based on flow control can accurately control the flow and time of gas, the flow control ventilation can better control the change of airway pressure, and the air supply volume of equipment can be accurately estimated by setting proper flow and time, so that the airway pressure and risk are reduced, and the possibility of air pressure damage is reduced.

A wearable respiratory isolation system is configured as an open collar to be worn loosely around the neck of the user, with an articulating arm positioning a mouthpiece in front of the mouth and nasal region of the user. The system provides filtered and sterilized air through a inhalation vent on the mouthpiece which creates a curtain of sterilized air in front of the users face, which protects the users face from air bourne pathogens provides sterile air for the user to inhale. Exhaled air is extracted through an exhalation vent on the mouthpiece, is decontaminated and exhausted to the rear of the user. A modified, background oriented Schlieren imaging technique is used to determine whether the user is inhaling or exhaling, and this information is used to control the flow of sterilized air and the capture of exhaled gases.

The utility model discloses a medical atomizing device which comprises an atomizer, liquid medicine is stored in the atomizer, the atomizer can atomize the liquid medicine, an output pipe for outputting the atomized liquid medicine is arranged on the atomizer, the output pipe is connected with an aerial fog storage container for storing the atomized liquid medicine output from the atomizer, and the aerial fog storage container is connected with an air outlet of the atomizer. The aerosol storage container is connected with a mask through an inhalation tube, the inhalation tube is provided with a one-way air inlet valve which is used for controlling the on-off of the inhalation tube to enable atomized liquid medicine in the aerosol storage container to flow towards the mask in a one-way mode, and the mask is provided with a one-way exhalation valve which is used for controlling exhalation in the mask to be exhausted. The device is simple in structure, practical, capable of automatically supplying atomized liquid medicine to a patient along with breathing of the patient, capable of effectively and fully absorbing and utilizing the atomized liquid medicine, not prone to causing waste of treatment liquid medicine, capable of reducing environmental pollution and environmentally friendly.

The invention belongs to the technical field of medicine, and particularly relates to a method and application for evaluating the respiratory muscle movement function of an IPF patient based on dynamic MRI. Performing dynamic MRI processing on the to-be-tested person to obtain a lung dynamic MRI image; manually marking and segmenting an end-expiratory image and an end-inspiratory image on the lung dynamic MRI image along the inner edge of the thoracic cavity outline, and checking and correcting; obtaining evaluation parameters of chest wall movement and evaluation parameters of diaphragm movement and form by using the images; measuring parameters are analyzed, and the pulmonary fibrosis degree and pulmonary vessel and chest wall muscle parameters of the HRCT image are quantified; and comparing and statistically analyzing the parameters of different to-be-tested persons so as to evaluate the respiratory muscle movement function of the IPF patient. The dynamic MRI technology is adopted, and a quantitative basis is provided for evaluating the respiratory muscle dysfunction and severity of the IPF patient.

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 discloses a nasal oxygen supply apparatus, comprising: a cylinder, oxygen supply tubes attached to two ends of the cylinder and communicated with an inner cavity of the cylinder; the nasal tube is used for being inserted into the nostrils of the patient, so that the oxygen provided by the oxygen supply tube enters the inner cavity and then is supplied into the nostrils of the patient through the nasal tube; the exhalation valve allows gas exhaled from the nostrils of the patient to flow to the outside and limits outside air from entering the inner cavity when the patient inhales; the throttle valve is used for enabling the pressure of the oxygen in the downstream inner cavity to be smaller than the pressure of the oxygen in the upstream inner cavity; the valve structure comprises a valve cavity and a valve component; the two ends of the valve cavity communicate with outside air and the inner cavity correspondingly, and the valve component is arranged in the valve cavity and used for controlling opening and closing of the valve cavity. When the pressure in the oxygen supply pipe is larger than the preset pressure, the valve component generates a first action to close the valve cavity, and when the pressure in the oxygen supply pipe is smaller than the preset pressure, the valve component generates a second action to open the valve cavity.

A respiratory mask or other sealing interface can be used in combination with a nasal cannula or other unsealing interface in providing respiratory therapies for the treatment of COPD or OSA. The mask can act as a pressure vessel over the top of a nasal cannula, with the intention of increasing expiratory pressure whilst allowing the nasal cannula to provide a user with breathing gases of a high humidity and temperature. The ability to selectively apply increased expiratory pressure may be effective in reducing a user's breathing rate and thus beneficial in the treatment of respiratory distress.

The invention relates to the technical field of medical instruments, and discloses an adjustable respiratory resistance type end-expiratory carbon dioxide monitoring nasal mask which comprises a nasal mask body, an end-expiratory carbon dioxide collecting tube, an oxygen conveying hose and a connector assembly arranged at one end of the nasal mask body and used for connecting the end-expiratory carbon dioxide collecting tube and the oxygen conveying hose. The connector assembly comprises a double-channel connector connected with the nasal mask body, a partition plate is fixedly connected to the inner wall of the double-channel connector, and when the inspiration resistance is adjusted through the arranged inspiration adjusting mechanism and expiration adjusting mechanism, the hand wheel assembly is manually operated to control the blocking film assembly, so that the caliber size of the oxygen delivery port is changed, and the oxygen delivery effect is improved. The larger the diameter of the oxygen delivery port is, the smaller the inspiration resistance is, when the expiration resistance is adjusted, the reel assembly is manually operated, so that the total gas displacement of the exhaust hole in the exhaust buckle is changed, the larger the total gas displacement of the exhaust hole is, the smaller the expiration resistance is, and therefore the effect of improving the treatment accuracy is achieved.

The present disclosure provides embodiments of a personal protective device which include one or more sensors. The personal protective device is in the form factor of a filtered mask to cover the nose and the mouth of the subject when in use. One or more sensor modules are connected to the mask for detecting one or more parameters related to an inhalation and or exhalation of the subject. The mask is held onto the face of the subject by one or more support members.

The invention provides a traditional Chinese medicine internal medicine clinical diagnosis detection breathing device which comprises an expiration cover assembly, a collection air pipe assembly and a detector body, the expiration cover assembly comprises an expiration cover body and a mouth biting part, the expiration cover body is of a spherical structure, and the mouth biting part is installed at the air inlet end of the expiration cover body; a first gas outlet end and a second gas outlet end which are symmetrical are arranged on the outer wall of the expiration cover body, a first gas outlet column and a second gas outlet column are installed at the first gas outlet end and the second gas outlet end respectively, and the collecting pipe assembly comprises a first gas collecting pipe, a second gas collecting pipe and a connecting pipe. The gas inlet end of the first gas collecting pipe is connected with a first gas outlet column in an inserted mode, the gas inlet end of the second gas collecting pipe is connected with a second gas outlet column in an inserted mode, the gas outlet end of the first gas collecting pipe and the gas outlet end of the second gas collecting pipe are communicated with a connecting pipe, and the connecting pipe is connected with the detector body. High-precision detection can be performed on exhaled air components of a patient, and a favorable basis is provided for clinical diagnosis of the internal medicine of traditional Chinese medicine.

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.

An oral appliance (OA) made as upper and lower splints or denture set of a user to facilitate adjustable mandibular advancement using an adjustable strap system assisting in partially or fully reducing snoring and thus ameliorating obstructive sleep apnea (OSA). The mandibular advancement is realized by a single adjustable strap avoiding providing a set of straps. Excess recess in strap assembly facilitates variation in mandibular advancement even after locking gross length of strap. An optional additional modular breathing assist device is disclosed that may serve the purpose of controlling quantity of air flow from mouth or oral cavity of a user during exhaling from the airway enhancing the anti-snoring function.

There is provided a device for measuring a person's ventilation including oxygen consumption. The device includes a sensor assembly. The device includes a breathing conduit through which at least one exhalation is received. The device includes a dehumidification cartridge configured to receive a sample amount of said exhalation from the breathing conduit, dehumidify the sample amount of said exhalation, and direct the sample amount of said exhalation so dehumidified to the sensor assembly. The dehumidification cartridge includes a dehumidification conduit having a proximal end at said sensor sampling port and which extends from the sensor sampling port towards the sensor assembly. The dehumidification cartridge includes a dehumidification chamber enclosing the dehumidification conduit. The dehumidification chamber is shaped to promote a flow of air therethrough. The dehumidification cartridge is shaped to facilitate for sanitary purposes, periodic replacement of either or both of the replaceable dehumidification cartridge and the dehumidification conduit thereof.

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.

The invention relates to the field of medical instruments, in particular to an oscillation expiration positive pressure device of an airway clearance technology, which comprises a shell and a controller, a monitoring structure is mounted in an air inlet cavity through an expiration structure, and an adjusting structure is mounted in a mounting cavity; the adjusting structure comprises a push plate and a screw rod, the screw rod penetrates through the mounting cavity and the adjusting cavity, the screw rod is sleeved with a lantern ring, the lantern ring is sleeved with a moving part, the moving part is matched with an adjusting power part, the screw rod is in threaded fit with a feedback structure, and the controller adjusts the power of the adjusting power part according to real-time monitoring data. Meanwhile, the controller controls the feedback structure to give feedback in different modes according to the movement condition of the screw rod, and the controller can correct the power of the adjusting power part according to the feedback result. Therefore, the oscillating airflow is always matched with the expiration process of the patient, so that the treatment effect and the comfort of the patient are improved.