8082results about "Respirators" patented technology

Disclosed herein are systems and methods for monitoring at least one volatile breathing compound in respiratory gases of patients. A device includes a patient respiratory gas interface coupled via a connector to a gas sampling line. The line includes a first channel for conducting a predetermined flux of respiratory gases from the interface to an inlet of a sidestream gas monitor, which monitors carbon dioxide (CO2) content. A pump facilitates gas flow through the device and the monitor. An outlet of the monitor is coupled to a second channel for conveying gases away. A valve controls passage of respiratory gas from the monitor via the second channel by connecting or disconnecting the flux to / from at least one volatile breathing compound detector, which monitors compound content. A control unit monitors CO2 values and uses this as a signal to control the valve, enabling compound monitoring or bypass based on CO2 content.

The invention provides an expectoration auxiliary control method and device. The method comprises the steps that audio signals of breathing sounds and cough sounds at multiple positions of the chest of a patient are collected through an audio sensor array, and a standardized audio feature data set is obtained through noise reduction, segmentation and feature extraction; a dynamic weighted graph model is constructed, and a random edge sampling algorithm and a parallel batch processing dynamic algorithm are combined to analyze and obtain a sputum viscosity index and a sputum distribution position map; based on the result, mapping the vibration parameter space into an unweighted disk diagram, and obtaining a personalized vibration treatment scheme by using a shortest path algorithm; in combination with the real-time breathing cycle of the patient, working parameters of the sound wave vibrator and the negative pressure suction device are synchronously controlled, and a coordinated and consistent multi-mode treatment execution instruction is obtained; and collecting real-time feedback data in treatment, and dynamically adjusting working parameters through reinforcement learning to obtain an optimized expectoration adjuvant therapy scheme. Intelligent adjustment can be achieved based on the real-time breathing state and sputum characteristics of the patient, the expectoration efficiency is improved, and discomfort of the patient is reduced.

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.

A system and a method provide closed-loop sedation, anesthesia, or analgesia by monitoring EEG and automatically adjusting delivery of sedative, anesthetic, and / or analgesic drugs to maintain a desired or predetermined level of cortical at all echelons of care. The system and the method further monitor a subject's cortical activity to detect occurrence of burst suppression which can be indicative of unsafe depth of anesthesia or sedation. Further, the system and the method provide for alteration or cessation of administration of anesthesia or sedation based on the occurrence of burst suppression to mitigate harm to the subject.

The invention discloses an antistatic polyisoprene rubber anesthesia air storage bag, and relates to the technical field of anesthesia air storage bags. The antistatic polyisoprene rubber anesthesia air storage bag is prepared from the following raw materials in parts by weight: 100 parts of polyisoprene latex, 0.5 to 2 parts of a stabilizer, 1 to 2 parts of a sodium p-styrenesulfonate aqueous solution, 3 to 6 parts of nano silicon dioxide suspension dispersion liquid, 1 to 2 parts of an anti-aging agent, 0.8 to 2 parts of conductive graphite and 3 to 6 parts of a vulcanization bag, the anti-aging agent is prepared by the following steps: reacting 3-(3, 5-di-tert-butyl-4-hydroxyphenyl) propionic acid with glycerol 1-oleyl ether-d5 to generate an esterification product, epoxidizing the esterification product with hydrogen peroxide and formic acid, and reacting the epoxidized product with N-phenyl-1, 3-phenylenediamine, and has excellent migration resistance. By adding the anti-aging agent into the polyisoprene rubber, the anti-aging capability of the anesthesia air storage bag is improved.

An electronically actuated droplet delivery device with a mouthpiece for inhaling fluid droplets includes an ejector mechanism having an electronic actuator operably coupled to an aperture plate. A fluid reservoir provided fluid to the ejector mechanism through a surface tension plate that increases contact between the fluid from the fluid reservoir and the aperture plate.

An electronic droplet delivery device having a mouthpiece of inhalation of droplets includes an aperture plate with a plurality of openings coupled to a piezoelectric actuator. A fluid reservoir supplies a solution with nicotine to the aperture plate for ejection out of the mouthpiece in a droplets stream.

The invention relates to the technical field of oxygen supply monitoring, regulation and control, and discloses a medical oxygenerator multi-source information fusion monitoring evaluation method and system, and the method comprises the following steps: S101, collecting the equipment operation parameters and environment parameters of a medical oxygenerator in real time, and obtaining the physiological demand data of a patient; s102, on the basis of the equipment operation parameters and the environment parameters, constructing coupling characteristics for representing the operation state of the oxygen generator; s103, establishing an environmental quantitative influence model of the environmental parameters on the oxygen production efficiency; s104, performing coupling analysis on the basis of the physiological demand parameters of the patient, the coupling characteristics and the environmental quantitative influence model, and determining a dynamic oxygen supply regulation and control strategy; and S105, monitoring the running state of the oxygen generator in real time, and triggering graded early warning when the oxygen generator is abnormal. Through multi-source data fusion and intelligent regulation and control, the oxygen supply demand of a patient is accurately matched, the environmental adaptability is optimized, the oxygen supply efficiency is improved, a grading early warning mechanism is integrated, intelligent monitoring and abnormal protection are achieved, and the safety and reliability of the oxygen generator are improved.

The present invention discloses an electronically controlled evaporator and its control method. The electronically controlled evaporator includes: a medicine storage module, a plunger pump system, and a valve seat module; the medicine storage module includes a medicine tank, a medicine lid, and a bent plate; the plunger pump system is composed of a cylinder block, a piston rod, a floating joint, a lead screw, a pump motor, a pipe joint, etc., to realize the suction and pushing of anesthetic liquid; the valve seat module includes a valve seat, an air outlet, a diffusion joint, an air inlet, a lower valve plate of the evaporation core, an upper valve plate of the evaporation core, an evaporation core motor, an evaporation core spring, a ferrule, a switching valve motor, an upper valve plate of the switching valve, a lower valve plate of the switching valve, etc., to realize the on / off of the anesthetic liquid and the volatilization of the anesthetic. The anesthetic output by the plunger pump of the present invention can quickly volatilize and mix with fresh gas when entering the evaporation core, thereby realizing precise control of the anesthetic concentration. At the same time, when it is necessary to close the anesthetic output, the anesthetic liquid outlet can be quickly closed.

The embodiment of the invention provides a breathing machine inspiration detection method and device and a computer readable storage medium, and the method comprises the steps: collecting first pressure data and first flow data in a current breathing period, and calculating a target flow baseline according to the first pressure data, the first flow data and a preset fitting formula; calculating a virtual traffic baseline according to the target traffic baseline and the first traffic data; if it is judged that the inspiration triggering state is not reached or the virtual inspiration flow change rate in the inspiration triggering state is smaller than a preset flow change threshold value, second pressure data and second flow data of the next respiratory cycle are continuously collected, and the virtual inspiration flow change rate is calculated; and judging that inspiration is detected until the detected virtual inspiration flow change rate is greater than or equal to the preset flow change threshold value. According to the invention, the phenomena of inspiration detection delay, group delay and the like can be avoided, the difference between detected inspiration and actual inspiration is reduced, and the sensitivity of inspiration detection is improved.

A noise-reducing air passage device and its components for use in ventilator systems, including a housing with at least one inlet, at least one outlet, an inner wall, and an outer wall. The space enclosed by the inner wall of the housing forms a gas passage including at least one chamber to provide a space for gas accumulation and flow. A blower, the core component to provide positive pressure gas to the device, is secured within one of the at least one chamber. The gas passage also includes a ventilation component to divide the gas and streamline turbulent airflow. The ventilation component is among the noise-reducing components, which also include a support component to provide support and damp vibrations for the blower and an inlet component provided at the inlet.

The invention relates to an anesthetic gas output control system for an anesthesia machine and a method thereof, and relates to the technical field of anesthesia machines, the system comprises a data acquisition module used for collecting breathing parameters and gas state parameters of a patient and constructing a breathing dynamics model containing nonlinear correction; the concentration prediction module is used for constructing a gas mixing concentration prediction model with pressure dynamic compensation according to the airway pressure of the anesthetic gas output by the respiratory dynamic model; the parameter control module is used for constructing a control objective function based on the concentration deviation, the flow change rate and the pressure deviation of the anesthetic gas; the self-adaptive compensation module is used for determining a self-adaptive compensation factor based on the concentration deviation and the pressure change rate of the anesthetic gas; the flow correction module is used for calculating flow correction values of various anesthetic gases; and the gas output module is used for outputting the anesthetic gas according to the flow correction values of various anesthetic gases. The system can improve the accuracy of anesthetic gas output control.

Vaporizers and vaporizer systems, which can include a device in communication with a vaporizer, can include one or more features related to control of functions and / or features of the vaporizer, identification of a cartridge and / or a vaporizable material in the cartridge, data exchange (either one-way or two-way) between a cartridge and a vaporizer with which the cartridge is engaged, and the like.

The invention discloses an oxygenerator remote control system and method based on the Internet of Things, and belongs to the technical field of intelligent medical equipment and remote health management, and the method comprises the steps: S1, collecting multi-dimensional physiological data of a user in real time through a multi-source physiological signal collection module, a heart rate variability index and a body movement signal; s2, based on the multi-dimensional physiological data, processing is performed through a preset physiological state prediction model, and a unified physiological stress index is solved; s3, determining a predictive oxygen supply flow rate value in combination with the physiological stress index and a preset user basic oxygen supply flow rate; s4, according to the predictive oxygen supply flow velocity value, a control signal for a physical execution component of the oxygen generator is generated so as to dynamically adjust oxygen supply parameters, and conversion from passive compensation to active prediction is achieved.

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 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.

A gas passage for use in a PAP device configured to provide pressurized gas to a patient, including a passage casing with an air intake and an air outlet. The casing is configured to encompass and accommodate internal components and forms a chamber inside, where the chamber is configured to facilitate the flow and accumulation of gas. A blower is provided within the chamber to pressurize and output the gas. The internal components of the noise-reducing gas passage include noise reduction components configured to attenuate the noise of the gas entering the noise-reducing gas passage. These noise reduction components include a ventilation component, an intake pipe, and a flexible component at the air intake. Additionally, this disclosure specifies scientific and precise data requirements for the internal structure and positioning of the blower and noise-reducing components within the noise-reducing gas passage to achieve effective and excellent noise reduction.

The present invention is applicable to the technical field of medical equipment, and provides a method, system, storage medium and ventilator for controlling oxygen concentration of a ventilator. The method comprises calculating target oxygen flow and target air flow according to target oxygen concentration and target total flow; inputting target oxygen flow, actual oxygen flow, oxygen flow error and constant value into a first BP neural network model to obtain a first set of PID control parameters; inputting target air flow, actual air flow, air flow error and constant value into a second BP neural network model to obtain a second set of PID control parameters; generating a first control signal according to the oxygen flow error and the first set of PID control parameters, and generating a second control signal according to the air flow error and the second set of PID control parameters; and adjusting the opening of the oxygen end proportional valve and the air end proportional valve according to the first control signal and the second control signal. The present invention solves the problems of slow response speed, insufficient stability and difficult parameter adjustment caused by existing fixed PID parameter control.

The invention discloses an oxygen supply control method and system based on a gas flow signal, and relates to the technical field of gas control. A gas flow signal is denoised through a wavelet transform algorithm, so that the judgment precision of the main control unit on the gas flow state is improved, and the gas supply adjustment precision is ensured; a neural network and a fuzzy control algorithm are combined, the gas flow is dynamically adjusted, real-time monitoring and recalculation are carried out, the gas flow requirements of users at different stages are met, and the supply stability and accuracy are guaranteed; meanwhile, a dynamic model is established according to the valve control response time, the control signal output time sequence is optimized, the gas supply pressure and flow adjustment are smoother and more stable, the dynamic response and reliability of the system are improved, and the use comfort of a user is enhanced.

The invention relates to an NO delivery apparatus (1) for supplying an NO-containing gas, comprising an NO injection line (111) with a normally closed valve device (113), and a flow rate measurement device (112); an emergency circuit (200) comprising an emergency line (201) connected to the injection line (111), with a normally open emergency solenoid valve (202); and operating means (130). In the event of malfunction of the operating means (130), the flow rate control device (210) supplies the gas at a pre-fixed emergency flow rate of gas that has been determined prior to said malfunction. A multi-way solenoid valve (205) is arranged downstream of the flow rate control device (210) and supplies dosing lines (206, 207) having a calibrated orifice device (208, 209). Installation (1, 2) for supplying gas to a patient and comprising such an apparatus (1).

An accessory (100) for obtaining inhalation data of an inhaler (10) is provided. The accessory is integrally formed with or attached to the inhaler. The accessory comprises: one or more airflow-induced vibration generators (110a, 110b) configured to generate mechanical oscillations. The accessory further comprises a monitoring system comprising one or more accelerometer sensors (135) configured to receive, from the airflow-induced vibration generator, the generated mechanical oscillations and configured to generate acceleration signals based on the received mechanical oscillations. The accessory further comprises an electronic processing unit (350) electrically connected to the accelerometer sensors, configured to receive, from the accelerometer sensor, the generated acceleration signals and configured to extract inhalation data from the received acceleration signal.

The invention discloses a volume reduction valve, and relates to the technical field of medical instruments, the volume reduction valve comprises a valve core and a buffer structure, the valve core is provided with a one-way through flow cavity, the buffer structure has elasticity, the buffer structure is connected with the valve core, and under the action of a flow medium in the flow cavity, the buffer structure is connected with the valve core. The valve element can extrude the buffering structure so that the buffering structure can deform. When a patient moves violently or coughs violently, the buffering structure can buffer part of impact, and the situation that the impact is too strong, and safe use of the volume reduction valve is affected is avoided. Meanwhile, impact can directly act on the valve element, the valve element can extrude the buffering structure, and the buffering structure can deform. For example, the extruded buffer structure can protrude towards the periphery, so that the pressure between the buffer structure and the cavity of the patient can be increased, the friction force is further improved, the fixing effect of the buffer structure in the cavity is further improved, and the impact resistance of the volume reduction valve is improved.

The invention belongs to the technical field of medical instruments, and particularly relates to a medical anesthetic gas purification device which comprises a purification shell and a PLC arranged on the purification shell, the PLC is used for controlling the working state of each electric appliance element on the purification shell, two purification cavities are formed in the purification shell, and the purification cavities are communicated with the purification shell. And threaded pipes are rotationally arranged in the two purification cavities correspondingly and communicate with butt joint pipes in a threaded mode. During purification operation, through cooperation of the joint control unit and the lifting gas guide unit, waste anesthetic gas and the activated carbon purification filter element form a three-dimensional and all-around contact mode, the use efficiency of all parts of the activated carbon purification filter element is guaranteed, resource waste is reduced, the use cost is reduced, and meanwhile, the waste anesthetic gas purification device is suitable for industrial production. And after the previous activated carbon purification filter element is saturated, the next activated carbon purification filter element is automatically switched to work, so that the continuity of purification operation in the replacement operation process is ensured.

The invention relates to the technical field of medical instruments, and discloses an intelligent multi-mode medical oxygen flow monitoring system, device and method. The system comprises a sensor module, a coupling modeling unit, a prediction unit, a control unit and an output module. Oxygen flow, temperature, humidity and pressure data are collected in real time through the sensor module, a dynamic coupling model of a flow field, a thermal field and a pressure field is established through the coupling modeling unit, and the prediction unit dynamically predicts the oxygen flow based on a time sequence and a state space model. The control unit optimizes sensor sampling and signal processing parameters through a feedback control algorithm, and the output module displays the oxygen flow and triggers abnormal alarm. According to the invention, high-precision monitoring, dynamic prediction and optimal control of the oxygen flow are realized, the problems of low monitoring precision, weak data analysis capability and poor interactivity in the prior art are solved, and the safety, real-time performance and intelligent level of oxygen supply are remarkably improved.

A coupling device includes base and plate members that are connectable to one another. The base member has a body with a coupling face, a stopper connected to the body and moveable between neutral and locked positions, and an actuation mechanism for moving the stopper. In a connected mode of the coupling device, a contact portion of the coupling face contacts a contact face of the plate member, and an alignment area of the contact portion corresponds to a position of an opening of the plate member. In the neutral position, the stopper is aligned with the alignment area and can be received in the opening thereby permitting removal of the plate member from the base member. In the locked position, the stopper is misaligned with the alignment area, and extends over a part of the plate member to restrict movement of the plate member away from the base member.

The invention provides an oxygen production control method of an oxygen generator and an oxygen generator system, and relates to the technical field of oxygen generators, and the oxygen production control method comprises the following steps: obtaining the maximum pressure value of an oxygen storage barrel after stable oxygen output of the oxygen generator under the state of a preset compressor rotating speed and a preset molecular sieve maximum pressure value; judging whether the maximum pressure value of the oxygen storage barrel within a preset duration is continuously smaller than a preset pressure threshold value of the oxygen storage barrel or not; if the maximum pressure value of the oxygen storage barrel within a preset time length is continuously smaller than a preset pressure threshold value of the oxygen storage barrel, obtaining a first inflation time length when the pressure value of the molecular sieve reaches the preset maximum pressure value of the molecular sieve; whether the first inflation duration exceeds a preset inflation duration threshold value or not is judged; and if the first inflation duration does not exceed the preset inflation duration threshold, compensating operation parameters of the oxygen generator. Whether the molecular sieve needs to be subjected to aging compensation or not is automatically judged, meanwhile, the judgment accuracy of aging compensation of the molecular sieve is improved, the use cost of the oxygenerator is reduced, and the practicability of the oxygenerator is improved.

There is provided a computer-implemented method for determining sleep misperception of a subject during a sleep session. The method comprises receiving sleep condition information. The sleep condition information comprises at least one of SDB information and insomnia information. The SDB information is representative of a sleep disordered breathing (SDB) condition of the subject based on a number of SDB events of the subject per unit of time. The computer-implemented method comprises receiving sleep quality information representative of a quality of sleep of the sleep session experienced by the subject. The computer-implemented method comprises determining a degree of sleep misperception based on the sleep condition information and the sleep quality information. The sleep misperception is representative of a difference between a subjective total sleep time of the sleep session experienced by the subject and an objective total sleep time of the subject in the sleep session.

The invention relates to a visual airway clearance device with an intelligent airway internal and external oscillation control function. The visual airway clearance device comprises an electrical impedance imaging device, a controller, an airway internal oscillation device and an airway external oscillation device. The electrical impedance imaging device is used for evaluating the lung ventilation function condition of a patient and transmitting measured lung ventilation function index parameters of the patient to the controller; the controller receives the pulmonary ventilation function index parameters of the electrical impedance imaging device, processes the pulmonary ventilation function index parameters and outputs a control signal; and after receiving the control signal, the air passage internal and external oscillation devices adjust the operation modes and parameters of the air passage internal and external oscillation devices in real time. The system has the advantages that a four-dimensional integrated structure of electrical impedance imaging visual evaluation, intelligent mode selection, double-oscillation cooperation and closed-loop feedback is created for the first time, the problem that the traditional technology cannot dynamically adapt to the heterogeneity of patients is solved, and personalized airway clearance modes and optimal adjustment parameters are provided for different patients; and the effect of removing airway deposited secretions is obvious.

The invention relates to the technical field of medical instruments, and discloses a breathing machine mode control system based on airway pressure and patient bucking triggering, comprising: a signal acquisition module for acquiring an airway pressure signal, a bucking signal and an oxygen saturation signal of a patient in real time; the signal processing and feature extraction module is used for performing feature extraction on the acquired airway pressure signal, bucking signal and oxygen saturation signal to obtain dynamic change features of pressure fluctuation amplitude, bucking signal energy and oxygen saturation; the mode triggering judgment module is used for judging whether a special breathing mode is triggered or not based on the pressure fluctuation amplitude and the bucking signal energy; and the model prediction control module is used for generating an optimal control strategy of ventilation parameters of the breathing machine according to the real-time patient state and the optimization target. Through real-time signal monitoring, intelligent mode switching and dynamic ventilation parameter optimization, the efficient, accurate and safe breathing support effect in a complex scene is achieved.