1274 results about "Type ventilator" patented technology

The invention relates to the technical field of medical care informatics, and discloses a laryngeal mask ventilation control method suitable for outpatient anesthesia, which comprises the following steps: before core analysis, injecting and monitoring a high-frequency signal to confirm the integrity of an original breathing waveform data stream; constructing a real-time ventilation waveform trajectory in a differential phase space only on the premise that a data stream is complete, and performing morphological comparison with an individualized baseline template; meanwhile, when a parameter adjustment event of the respirator is monitored, the baseline template is automatically re-calibrated, a collaborative analysis framework with front information source quality inspection and dynamic reference self-adaption capabilities is constructed, ventilation monitoring is converted from passive response to an isolated peak point into active insight to a system dynamics evolution trajectory, and the system dynamics evolution trajectory is optimized. Therefore, the risk of gradual deterioration of the ventilation state caused by tiny air leakage of the laryngeal mask or secretion accumulation can be clinically recognized in an early stage, and intervention time is won for anesthetists.

The invention relates to the technical field of biomedical engineering, and discloses an acute respiratory distress syndrome mechanical ventilation adaptive adjustment control system, which comprises a data acquisition module, a signal preprocessing module, a physiological parameter calculation module, a prediction module, a decision and control logic module and the like. Wherein the prediction module predicts a dynamic lung compliance change trend by using a long short-term memory neural network model, and the decision and control logic module generates a ventilation parameter adjustment instruction according to a prediction result and a clinical safety rule. By adopting the technical scheme, the system overcomes the hysteresis of traditional feedback regulation, reduces the risk of breathing machine related lung injury, optimizes oxygenation and carbon dioxide removal efficiency, and provides an accurate, safe and individualized mechanical ventilation treatment scheme.

The invention relates to a multi-parameter centralized monitoring method, system and equipment for a noninvasive ventilator and a medium. The method comprises the steps that firstly, original parameter data and coding rules of noninvasive respirators of all brands are obtained, format unification processing is conducted on the original parameter data by constructing a standardized data mapping table, and a parameter data set is obtained; transmitting the parameter data set to a local gateway by adopting a low-power-consumption Bluetooth protocol to generate an alarm data set; analyzing the dynamic change trend of the parameters by combining the parameter data set and the alarm data set, and generating a monitoring report data set; and finally, extracting a continuous abnormal trend based on the monitoring report data set, performing priority ranking according to the emergency degree to generate an intervention instruction, and tracking the processing state of the intervention instruction to obtain a final decision data set. According to the method, data intercommunication of noninvasive respirators of different brands is realized, the hysteresis of manual inspection is avoided, the timeliness and accuracy of abnormal response are improved, and the safety of patients is guaranteed.

The invention relates to the technical field of medical instruments, and particularly discloses a deep sleep maintenance algorithm for self-adaptive pressure regulation of a breathing machine, which comprises the following steps: step 1, a data acquisition and preprocessing module is connected with a pressure sensor and a flow sensor in the breathing machine to acquire a breathing pressure signal and a breathing flow rate signal of a patient in real time; 2, the data collecting and preprocessing module further conducts filtering and smoothing processing on the collected respiratory signals, noise and interference components are removed, and normalization processing is conducted on the respiratory flow rate signals; according to the breathing machine self-adaptive pressure regulation micro-awakening suppression algorithm based on the tidal volume dynamic tracking model, by dynamically tracking the tidal volume, the breathing requirement of a patient can be sensed in real time, and the pressure output of the breathing machine is self-adaptively regulated according to the change of the tidal volume; by means of the precise pressure adjusting mode, dyspnea caused by insufficient or too high pressure can be effectively avoided.

The utility model discloses a breathing machine humidifying tank and a breathing machine system, and relates to the field of medical instruments. The breathing machine humidifying tank comprises a tank body, a guide sleeve, a telescopic water bag and an operating rod. The tank main body is provided with a highest water line; the telescopic water bag is located in the tank body and horizontally arranged, the top of the telescopic water bag is higher than the highest water line, the telescopic water bag comprises a telescopic sleeve and a hard end plate, one end of the telescopic sleeve is connected with the tank body, the hard end plate is connected with the other end of the telescopic sleeve, and a water suction and drainage hole is formed in the hard end plate and lower than the highest water line. The guide sleeve and the telescopic water bag are arranged in the same direction, and the guide sleeve is connected with the tank body and corresponds to the telescopic water bag in position. And the operating rod penetrates through the guide sleeve, is matched with the guide sleeve and is sealed with the guide sleeve, and the operating rod is connected with the hard end plate. The breathing machine humidifying tank is installed on the breathing machine main machine, and a temperature and humidity sensor and a push-pull structure are arranged in a matched mode to obtain the breathing machine system. According to the utility model, the temperature and humidity of the humidified air at the patient end can be optimal.

The utility model discloses a clean storage system for a household breathing machine. The machine body is provided with a breathing machine placing area, a storage device, an air purification system and a display control component, an air outlet is at least formed in the breathing machine placing area or the part, close to the breathing machine placing area, of the machine body, the storage device is provided with a storage chamber, an exhaust port and a storage port capable of being opened and closed, and the storage chamber is communicated with an air supply device. The air purification system is provided with a fan, an air purification device, an air outlet and an air inlet, an airflow channel in the machine body in the air outlet direction of the air purification device is a clean air area, the air outlet communicates with the airflow channel, the breathing machine containing area forms the clean air area, and the air supply device sucks clean air. The household breathing machine platform is provided with a special platform space for placing various types of household breathing machines, has an air source filtering and purifying function, and has the advantages that accessories / parts of the household breathing machines can be cleanly accommodated and stored, indoor environment air can be purified, and the like.

The invention relates to the technical field of general control or regulation systems, in particular to a critical patient respirator parameter adaptive optimization control method, which comprises the following steps of: acquiring and processing physiological signals; constructing a dynamic respiration mechanical model based on a sliding time window recursive recognition algorithm; a man-machine coordination index is calculated, and the desynchrony degree is quantified; generating a ventilation parameter adjustment scheme through the reinforcement learning strategy network; and executing smoothing parameter adjustment, and introducing a safety boundary and a secondary fine adjustment mechanism. The breathing state of the critical patient can be accurately perceived and intelligently regulated and controlled, the ventilation efficiency is guaranteed, meanwhile, the man-machine synchronism and safety are improved, the medical care burden is relieved, and the prognosis of the patient is improved.

The invention discloses a clean storage system for a household breathing machine. The machine body is provided with a breathing machine placing area, a storage device, an air purification system and a display control component, an air outlet is at least formed in the breathing machine placing area or the part, close to the breathing machine placing area, of the machine body, the storage device is provided with a storage chamber, an exhaust port and a storage port capable of being opened and closed, and the storage chamber is communicated with an air supply device. The air purification system is provided with a fan, an air purification device, an air outlet and an air inlet, an airflow channel in the machine body in the air outlet direction of the air purification device is a clean air area, the air outlet communicates with the airflow channel, the breathing machine containing area forms the clean air area, and the air supply device sucks clean air. The household breathing machine platform has a special platform space for placing various types of household breathing machines, has an air source filtering and purifying function, and has the advantages that accessories / parts of the household breathing machines can be cleanly stored, indoor environment air can be purified, and the like.

The invention discloses a respiratory intensive care method and system, and the method comprises the steps: deploying an acoustic sensor on a respirator loop, and synchronously obtaining the ventilation parameters and optional temperature and humidity data of a respirator; preprocessing the acquired multi-modal data, and converting an acoustic signal into a time-frequency spectrogram; the preprocessed data are input into a multi-modal fusion fault recognition model, the model comprises a convolutional neural network branch used for extracting acoustic features and a recurrent neural network branch used for capturing time sequence dynamics, and the probability of a specific fault precursor is output by combining the features of all the branches through a fusion layer; and finally, performing early warning decision according to the probability. The invention also comprises a system for implementing the method. According to the invention, through deep fusion of acoustic, pneumatic and thermodynamic data, accurate prediction of fault precursor is realized, and an earlier time window is provided for clinical intervention, so that the monitoring safety is improved.

The invention discloses a constant-frequency positive-pressure superposition high-frequency oscillation supporting device and method applied to a breathing machine, and belongs to the technical field of medical breathing machines, and the constant-frequency positive-pressure superposition high-frequency oscillation supporting device comprises a monitoring module for monitoring physical state data of a patient; the evaluation module is used for evaluating whether auxiliary sputum excretion operation needs to be carried out or not according to the physical state data; the equipment control module is used for determining ventilation parameters of the ventilation equipment and foam driving parameters of the foam driving equipment according to the body state data; the ventilation equipment is used for providing ventilation airflow and ventilation pressure for the patient according to the ventilation parameters; the lung sputum monitoring module is used for monitoring the lung sputum discharge state of the patient and adjusting foam driving parameters according to the lung sputum discharge state. According to the breathing machine, the combination of ventilation and sputum excretion functions of the breathing machine is realized through a method of combining a foam-driven sputum excretion technology with a ventilation technology.

Disclosed is an NO delivery device for supplying an NO-containing gas, including an NO injection line, a flow rate measurement device and a valve device. The valve device is normally closed. An emergency line connected to the injection line includes an emergency solenoid valve, which is normally open, and a flow rate control device. An operating unit operates these elements. In the event of malfunction of the operating unit, the emergency solenoid valve passes to an open position, whilst the valve device passes to a closed position. The flow rate control device supplies the gas at a pre-fixed emergency flow rate of gas, determined on the basis of the gas flow rate measurements supplied by the flow rate measurement device during the normal functioning of the device prior to the malfunction. Gas supply installation including such an NO delivery device and a medical ventilator.

The invention relates to a working parameter adjusting method and device, computer equipment and a storage medium. The method comprises the following steps: acquiring gas pressure and gas flow rate output by a breathing machine and collected by a breathing machine sensor; determining breathing information of the target user according to the gas pressure and the gas flow rate; the breathing information comprises at least one of breathing frequency, real-time tidal volume and breathing quality data; determining physiological state information of the target user according to the breathing information and a physiological state threshold value; and adjusting working parameters of the breathing machine based on the physiological state information. By analyzing the gas pressure and flow velocity data collected by the respirator sensor in real time, the breathing frequency, tidal volume and other key parameters of a user can be accurately determined, the breathing state of a patient is intelligently evaluated, the working parameters of the respirator are automatically adjusted according to the evaluation result, and the flexibility of the working parameters is improved.

The invention discloses a portable breathing machine for the emergency department, and relates to the field of portable breathing machines, the portable breathing machine comprises a machine body and a handle fixedly mounted at the upper end of the machine body, a controller and a control knob are fixedly mounted at the front end of the machine body, a protective cover is rotatably mounted at the front end of the machine body, and a display screen is arranged in the machine body. And a butt joint pipe is fixedly mounted on the outer side of the machine body. According to the portable breathing machine for the emergency department, the display screen can be protected, damage caused by accidental collision of the display screen is avoided, meanwhile, limiting is conducted after the protective cover is closed, the closing stability of the protective cover can be guaranteed, and the protective effect on the display screen is further guaranteed; the angle of the display screen is limited according to the air pressure sealing principle, the angle of the display screen can be limited, when the display screen is extruded by external force, the air pressure sealing condition is damaged, the display screen is made to rotate, and the self-protection effect on the display screen is further improved.

The invention relates to a treatment equipment operation parameter adjusting method and device, equipment and a storage medium. The method comprises the steps that under the condition that breathing machine equipment outputs mixed gas when the breathing machine equipment and oxygenerator equipment in the treatment system work together, monitoring parameters of target treatment equipment are obtained, and according to the monitoring parameters of the target treatment equipment, output operation parameters of the target treatment equipment are adjusted, the current error value between the actual oxygen concentration of oxygen output by the oxygen generator equipment and the target oxygen concentration meets the preset error condition after the output operation parameters are adjusted, and the target treatment equipment is breathing machine equipment or oxygen generator equipment. By adopting the method, the output operation parameters of the target treatment equipment can be reasonably adjusted through the constraint conditions, so that the oxygen concentration of oxygen output by the oxygenerator equipment can be within a certain reasonable range after the output operation parameters of the target treatment equipment are adjusted.

The invention relates to the technical field of respirator masks, and particularly discloses a noninvasive respirator mask auxiliary fixing device which comprises a machine body, an air delivery pipe and a mask, one end of the air delivery pipe is connected to the machine body, the air delivery pipe is used for delivering oxygen, the mask is connected to the other end of the air delivery pipe, and the mask is worn on the face of a patient to form a closed air path space. The fixing rope is connected to the mask and used for fixing the mask, the judging assembly is connected to the mask, when a patient is treated, the judging assembly is used for monitoring whether the mask is sealed or not and judging whether the gas conveying pipe is blocked or not, and in the using process, the sealing state of the mask can be monitored in real time, oxygen leakage is prevented, and the mask is prevented from leaking. The adjusting assembly is connected to the mask and connected with the fixing rope, the adjusting assembly is used for adjusting the tightness degree of the fixing rope, and when the judging assembly judges that the mask leaks air, the adjusting assembly is started and adjusts the tightness degree of the fixing rope.

The application discloses a ventilator humidification tank, which comprises a tank body and an internal chamber. The tank body is provided with an air flow inlet and an air flow outlet, and the internal chamber can contain humidification liquid and is communicated with an external air path. The tank body comprises an insertion end and a holding end. The insertion end can be inserted into the inside of a ventilator main machine. The humidification tank further comprises an air inlet flow guide part with a first end and a second end. The first end is in sealed connection with the air flow inlet, and the second end is communicated with the internal chamber. The air inlet flow guide part comprises a flow guide pipe with a bending extension. The flow guide pipe comprises a first flow channel and a second flow channel. When the humidification tank is rotated by not more than 90 degrees in any direction from a working position, the humidification liquid cannot enter the first flow channel, so as to prevent the humidification liquid from flowing out of the air flow inlet. According to the application, the air path inside the air inlet flow guide part is designed to be bent and extended, so that the reverse flow path of the humidification liquid in the flow guide pipe is more tortuous. Even if the machine body is tilted, the humidification liquid will not flow back, so that the safety of the air blower is ensured.

The utility model relates to a noise reduction structure and a noise reduction device of a fan and ventilation treatment equipment, and relates to the technical field of breathing machines. The noise reduction structure of the draught fan comprises a flexible first draught fan sleeve. Due to the fact that the flexible first draught fan sleeve can at least cover a part of the draught fan, vibration generated by the draught fan in operation can be effectively buffered, sound isolation is carried out, and the noise reduction effect is achieved; in addition, a supporting part, a fixing part and a limiting part on the first fan sleeve can effectively limit the first fan sleeve when the first fan sleeve is fixedly installed, so that a fan installed in the first fan sleeve can be stably fixed when vibration is generated in the operation process, and furthermore, due to the fact that a hanging structure where the limiting part is located is also arranged to be a flexible structure, the fan can be stably installed on the first fan sleeve. And vibration generated during operation of the fan can be effectively buffered, so that the stability of fixed installation of the fan is improved.

A device for measuring metabolic parameters and functional residual capacity is connected to a ventilator. To measure CO2 and O2 concentrations, the device takes a sample from a patient's breathing circuit and measures the gas flow rate in the circuit in parallel. The respiratory gas flow rate is measured without a time lag. The CO2 and O2 concentration data differ in time by the transport lag in sample delivery from the patient circuit to the CO2 and O2 sensors. The processor measures and compensates for transport lags. Time-synchronized CO2 and O2 concentration data are time-integrated with the flow rate, and the volumetric amounts of CO2, O2 / N2 are calculated. On the basis of these data, metabolic parameters and / or volumetric capnometry function and / or functional residual capacity are calculated.

The invention provides a high ventilation method for maintaining equal carbonic acid through exogenous CO2 gas and a breathing device. Belongs to the technical field of gas exchange. The method comprises the steps that physiological monitoring data of a patient are collected in real time, and meanwhile parameters of a breathing machine are obtained; inputting the collected data into a pre-trained time sequence prediction model; performing data fusion based on the EtCO2 predicted value, the currently actually measured physiological data and the static parameters of the patient to form a comprehensive evaluation result; and through a control algorithm, an incremental adjustment instruction of the exogenous CO2 supplementary flow is obtained through calculation based on the comprehensive evaluation result. The CO2 demand is estimated in real time through a dynamic prediction model, static estimation is replaced, and the control accuracy and the response speed are remarkably improved; through a multi-modal data fusion technology, dynamic and static physiological parameters are comprehensively applied, so that a control strategy can better reflect the individualized physiological status of a patient.

The invention belongs to the field of ventilation equipment, and particularly relates to a window type ventilator of a periscopic air duct, the window type ventilator comprises an air outlet duct and an air inlet duct, the air inlet duct comprises a first vertical section, the air outlet duct comprises a second vertical section, a heat exchange cavity is arranged in the first vertical section, the second vertical section is communicated with the heat exchange cavity, a heat exchange device is arranged in the heat exchange cavity, and the heat exchange device is communicated with the first vertical section. A dust removal device is further arranged in the air inlet duct and comprises two electrostatic film sets arranged at intervals, a rotating mechanism is arranged at one end of each electrostatic film set, and the rotating mechanisms can adjust the opening degree of the electrostatic film sets through rotation so as to adapt to the inlet flow of different outside air; external air exchanges heat with exhausted indoor air through the heat exchanger, then is dedusted through the dedusting device, and finally enters a room.

The invention provides an organ chip, a lung organ model, a construction method and a simulation method, the organ chip comprises a culture membrane and an actuating membrane, the organ chip is further provided with a first culture chamber, a second culture chamber, an actuating chamber and a perfusion channel, the culture membrane separates the first culture chamber and the second culture chamber, the perfusion channel is communicated with the first culture chamber, and the actuating chamber is communicated with the second culture chamber. A communication port of the perfusion channel and the first culture chamber faces the culture membrane, preferably directly faces the culture membrane, the perfusion channel is used for connecting an external air source, the actuating chamber separates the second culture chamber and the actuating chamber, and the actuating chamber can deform in response to a pressure change of the actuating chamber so as to conduct the pressure change between the actuating chamber and the second culture chamber; further, the culture membrane is deformed. The organ chip can more truly simulate the respiratory movement process of pulmonary alveoli and the multi-directional shear stress generated by gas to cells, and is beneficial to meeting the research requirements of respirator-related lung injury.

The invention provides a control method and system for interaction between emergency simulation training and a real respirator, and the method comprises the steps: collecting control parameters of the respirator, and carrying out the preprocessing of the control parameters, and obtaining an equipment parameter vector; calculating a physiological response state based on the device parameter vector; the physiological response state comprises alveolar pressure and oxygenation estimation; based on the physiological response state, performing quantitative judgment on the disease stage of the patient to obtain a current disease stage, and executing a corresponding evolution instruction set; a medical specification operation reference table is constructed, a target interval is extracted from the current illness state stage and the evolution instruction set, the matching degree of the target interval and a reference interval is calculated, and the reference interval is extracted from the medical specification operation reference table; determining whether to continue evolution, enter relieving or mark training is completed based on the matching degree; the breathing gas of the patient is simulated and restored through the gas compressor and the gas mixing device and is conveyed to the real breathing machine.

The invention relates to the technical field of medical equipment, in particular to an edge calculation respirator system and method for adaptive ventilation control, and the system comprises a respirator end which is provided with an edge calculation module and a local control model; the edge calculation module is used for collecting multi-modal physiological parameters of a patient and performing data preprocessing on the multi-modal physiological parameters of the patient to generate a multi-dimensional feature vector; the local control model carries out real-time self-adaptive adjustment on ventilation parameters of the breathing machine based on the multi-modal physiological parameters of the patient and the baseline characteristics of the patient; the cloud server is in communication connection with the respirator end and is configured with a global optimization model; and the cloud server receives historical ventilation data of the respirator end, and the global optimization model performs training based on the historical ventilation data to generate a personalized ventilation strategy, and issues the personalized ventilation strategy to the respirator end for correcting adjustment of the local control model. According to the invention, low latency and high reliability of bedside control are guaranteed through a side cloud collaborative architecture.

The utility model relates to the technical field of breathing machines, and discloses a portable noninvasive breathing machine which comprises a shell, a connecting box is arranged in the right side of the shell, air bags are installed on the left side and the right side of the connecting box, an exhaust pipe is arranged on the rear side of the connecting box, an air inlet pipe is arranged on the front portion of the connecting box, and a filtering mechanism is arranged on the front portion of the air inlet pipe. One-way valve mechanisms are arranged in the opposite sides of the air inlet pipe and the air outlet pipe. According to the portable noninvasive breathing machine, the compression cover is rotated, the compression cover is detached from the right end of the shell, then a hand penetrates through the handle and holds the compression cover, the compression cover is pressed in a reciprocating mode, the compression cover is made to press the air bag in a reciprocating mode, manual pumping can be carried out, temporary emergency use can be carried out in a power-off state, and the portable noninvasive breathing machine is convenient to use. After the filtering sponge is replaced, the filtering box is inserted into the air inlet pipe, the knob is loosened, the torsional spring can reset the knob, the sliding groove can be blocked through the knob, the filtering box is prevented from falling off, and mounting and dismounting are quite easy and convenient.

A computer-implemented method for detecting onset of a spontaneous breath by a patient coupled to a ventilation system includes receiving, at a processor, an electromyography (EMG) signal from an EMG sensor disposed on the patient. The method also includes pre-conditioning, via the processor, the EMG signal to separate the EMG signal into a plurality of components having EMG information utilizing a set of bandpass filters. The method further includes individually analyzing, via the processor, each component of the plurality of components to detect an onset of the spontaneous breath by the patient. The method still further includes determining, via the processor, the onset of the spontaneous breath by the patient is occurring when at least two components of the plurality of components indicate the onset of the spontaneous breath by the patient.

The invention relates to the technical field of medical monitoring, in particular to a patient cardiopulmonary function monitoring system and method and a computer readable storage medium, the monitoring system comprises a breathing machine, a pulmonary membrane oxygenation device, a first monitoring module and a second monitoring module, and the breathing machine comprises a breathing circuit, a processing module and a display module; the pulmonary membrane oxygenation equipment comprises an oxygenator; the first monitoring module is used for monitoring carbon dioxide exhaling parameters in gas exhaled by a patient in real time; the second monitoring module is used for monitoring carbon dioxide discharge parameters in gas discharged by the oxygenator in real time. By means of real-time monitoring of exhaling parameters of carbon dioxide in gas exhaled by a patient and discharging parameters of carbon dioxide in gas discharged by an oxygenator, continuous monitoring of the change condition of the cardiac function and / or the lung function of the patient is achieved, oxygen consumption of the patient can be truly reflected, parameter adjustment of a breathing machine and lung membrane oxygenation equipment is facilitated, and the patient experience is improved. And guidance is provided for turning of the pulmonary membrane oxygenation equipment.

The present invention discloses a ventilator, wherein the bottom shell has an air inlet connected to the outside atmosphere; a partition is assembled on the bottom shell, the partition is provided with a fan accommodating chamber, and a fan body is installed in the fan accommodating chamber; an upper cover is assembled on the partition; the ventilator is configured as follows: a first chamber is formed between the partition and the bottom shell, the partition and the upper cover are divided by the fan body into a second chamber located in front of the air inlet of the fan body and a flow monitoring chamber located behind the air outlet of the fan body, and an air flow channel connecting the first chamber and the second chamber is formed on the partition. This solution makes the overall structure of the ventilator more compact and reliable, reduces the number of parts of the ventilator as a whole, and has an ingenious and reasonable structure, simplifies assembly, improves assembly efficiency and assembly quality, and thus improves the safety and reliability of patients when using the ventilator. As a medical product, the ventilator can make patients use it more safely and stably.

The invention discloses a multi-channel oropharyngeal ventilation device for anesthesia, and relates to the technical field of medical instruments. The device comprises a breathing machine, a gas transmission chamber is arranged on one side of the breathing machine, a gas transmission end is arranged in the gas transmission chamber, a butt joint pipe is fixedly inserted into one side of the gas transmission end, a limiting ring is fixedly connected to the butt joint pipe in a sleeving mode, and a horizontally-arranged control knob is rotationally installed in the gas transmission chamber; and the control knob is fixedly sleeved with a fan-shaped limiting plate. The multi-channel air conveying assembly is arranged, during first air conveying, part of oxygen-enriched air can be conveyed into the fan-shaped supporting air bags through the first vent holes, and the two third vent holes are gradually filled with the oxygen-enriched air through the second vent holes and the third vent holes, so that the fan-shaped supporting air bags and the annular air bags are gradually expanded, and the oropharynx of a patient is slightly expanded; medical staff can conveniently adjust the insertion position of the oxygen catheter, and the situation that soft tissue of the oropharynx of a patient presses the oxygen catheter, and consequently air conveying is difficult or the air conveying amount is insufficient is prevented.

The invention discloses a float valve type temperature control humidifying device and a breathing machine, and relates to the technical field of breathing machines, the float valve type temperature control humidifying device comprises a mounting seat, a heating base, a humidifying tank and a water supply assembly, the humidifying tank is detachably mounted in the mounting seat, the top is provided with an air outlet, and the upper part of the side wall is communicated with an air inlet; the heating base is arranged at the bottom of the humidifying tank and used for heating water stored in the tank to generate saturated steam, and the water supply assembly is arranged to supplement water to the humidifying tank in a small-flow mode. The problems that in the prior art, mechanical floating ball type water level control is adopted for a humidifying tank of a breathing machine, due to concentrated large-flow water supplementing, local temperature in the humidifying tank is suddenly lowered, gas temperature and humidity fluctuation is caused, and the treatment safety of a patient is affected are solved. The device has the advantages that through cooperative control of the double floating balls and cam extrusion type flow self-adaptive adjustment, the liquid level control reliability is guaranteed while sudden drop of the water replenishing temperature is eliminated, and the respiratory treatment safety is remarkably improved.