192 results about "Airway pressures" patented technology

The invention relates to the technical field of breathing machine data monitoring, in particular to an anesthesia breathing machine monitoring system which comprises a real-time data anomaly monitoring module, a real-time data anomaly monitoring module, a real-time data anomaly monitoring module, a real-time data anomaly monitoring module, a real-time data anomaly monitoring module, a real-time data anomaly monitoring module, a real-time data anomaly monitoring module, a real-time data anomaly monitoring module and a real-time data anomaly monitoring module, and comparing the patient monitoring data with a preset safety threshold, and generating an abnormal data monitoring result. According to the method, by monitoring the airway pressure, tidal volume and respiratory rate of a patient in real time and combining safety threshold comparison, the abnormal state can be recognized in time, the time sequence signal of the abnormal data can be generated, fractal dimension calculation and fluctuation feature analysis are conducted on the time sequence signal, the complexity and stability of the abnormal state are quantified, and the accuracy of the abnormal state is improved. And the Bayesian network model is used for associating the current patient data with the abnormal data, so that the trend change of the future patient data can be predicted.

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.

The invention discloses a breathing machine output gas monitoring method, system and device and a storage medium. The breathing machine output gas monitoring method comprises the steps that airway pressure information, gas flow information and oxygen concentration information of breathing pipeline gas are obtained; determining tidal volume, respiratory rate and inspiration and expiration ratio according to the gas flow information; performing air leakage compensation on the tidal volume according to the airway pressure information to obtain a real tidal volume; the airway pressure information, the inspiration and expiration ratio, the real tidal volume, the respiratory rate and the oxygen concentration information are displayed. The breathing machine output gas monitoring comprehensiveness and accuracy are improved, and the breathing machine output gas monitoring method can be widely applied to the technical field of breathing machines.

A muffler for use in a positive airway pressure system includes a housing with an inlet port adapted to operatively couple to receive a pressurized gas flow, an outlet port, and a tubular body extending between the inlet port and the outlet port. The muffler also includes a muffler insert positioned within the tubular body in an abutting relationship with an inner surface of the body. The muffler insert defines: a first chamber proximate the inlet port; a second chamber proximate the outlet port; and an intermediate chamber separate from, and located between, the first and second chambers. First and second pluralities of apertures are adapted to direct the pressurized gas flow between adjacent chambers. The muffler attenuates noise associated with the pressurized gas flow as the pressurized gas flow passes through the muffler.

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.

The invention particularly discloses an intelligent monitoring type integrated negative pressure sputum suction device and a working method thereof. According to the device, a plurality of functional systems are integrated in the main body framework, so that the occupied space is effectively reduced. The core innovation point is that the intelligent monitoring and risk assessment system is integrated with various sensors and can monitor a plurality of key parameter indexes in real time, during working, first-level risks are judged by detecting basic parameters such as blood oxygen and heart rate, then second-level risks are determined by monitoring parameters such as airway pressure, and so on until the risk level is accurately judged; and a coping strategy is formulated accordingly. Meanwhile, the main control system intelligently manages operation of all the modules, it is ensured that the risk assessment and decision module and the basic sign monitoring module are normally opened, and other modules are started according to judgment logic, so that the operation cost is saved, repeated abnormal judgment is avoided, the sputum suction operation process is optimized, the safety, effectiveness and intelligent level of the sputum suction process are improved, and the sputum suction efficiency is improved. And more reliable support is provided for clinical treatment.

The invention provides a system for monitoring a patient featuring a wearable mask coupled to a positive airway pressure machine that delivers a flow of gas at positive pressures, through the mask, and to an airway of the patient. Attached to the mask is an electronics control unit featuring a printed circuit board, a microprocessor, a wireless transmitter, and a battery. The electronics control unit has a weight less than 30 grams and is enclosed by an enclosure of having a volume of less than 180 cm2. A plurality of sensors electrically connect to the electronics control unit.

The invention discloses an intelligent processing method and system for physiological data of a respiratory critically ill patient, and the method comprises the steps: carrying out the STL time sequence decomposition of a volume-time curve, obtaining the residual terms of the volume-time curve under abnormal fluctuation and no abnormal fluctuation, and judging whether the current volume data is abnormal data or not; obtaining the possibility of abnormal tidal volume caused by airway leakage based on the residual value representation of the respiratory cycle corresponding to the obtained abnormal data on the airway pressure-time curve; and based on the possibility of the abnormal data and the possibility of the abnormal tidal volume caused by the airway leakage, obtaining the abnormal degree of the abnormal tidal volume data caused by the airway leakage, and correcting the abnormal data according to the abnormal degree of the abnormal tidal volume data caused by the airway leakage. According to the invention, the possibility of abnormal data can be accurately judged, and intelligent correction can be carried out according to the abnormal degree, so that tidal volume data closer to reality can be obtained.

The application provides a real-time closed-loop adaptive airway pressure regulating system. The system comprises a respirator mask and a host computer; the respirator mask is provided with an airflow monitoring module, a pressure monitoring module, a snore monitoring module, a lower jaw electromyography monitoring module, a forehead transcutaneous carbon dioxide sensing module and a preprocessing module; the host computer is internally provided with an intelligent module; the preprocessing module pre-processes airflow velocity, pressure data, airway vibration signals, electrical signals corresponding to lower jaw and pharyngeal muscle activity and carbon dioxide content measured by the airflow monitoring module, the pressure monitoring module, the snore monitoring module, the lower jaw electromyography monitoring module and the forehead transcutaneous carbon dioxide sensing module in real time; the intelligent module identifies a risk window period of airway collapse of a user in real time according to the pre-processed data and performs adaptive pressure boosting control on the pressure in the airway of the patient after identification. The application reduces the misjudgment rate of newly occurring CSA events of complex sleep apnea after OSA relief.

The invention relates to the technical field of artificial airway pressure control, and discloses an intelligent control method and system for artificial airway airbag pressure and a storage medium. The method comprises the steps that the real-time pressure of the air bag within the first time length is obtained based on the first monitoring frequency; a deviation value between the real-time pressure and the standard range is determined, if it is judged that the real-time pressure is abnormal based on the deviation value, target pressure is selected in the standard range, and the pressure difference between the real-time pressure and the target pressure is determined; converting the pressure difference into a gas adjustment amount, inflating or deflating the airbag based on the gas adjustment amount, and dynamically adjusting the gas injection speed based on an adjustment strategy until the real-time pressure reaches the target pressure; generating a pressure change curve based on the real-time pressure, and analyzing the pressure change curve to generate an analysis result; and adjusting the first monitoring frequency to the second monitoring frequency based on the analysis result. The inflation or deflation speed can be dynamically adjusted according to the actual condition of the pressure difference of the air bag, and therefore it is guaranteed that the artificial air bag is used more safely.

Technologies for sanitizing medical devices are described. In particular, sanitizing systems, components of sanitizing systems, and methods for sanitizing medical devices such as continuous positive airway pressure (CPAP) equipment are described. In embodiments, the sanitizing systems include a sanitizing gas generator and a base including at least one exhaust port and a filter.

The invention discloses a breathing machine pipeline detection method. The method comprises the steps that a model is established according to parameters and corresponding equivalent relations; connecting a breathing machine pipeline; air is supplied to the pipeline at a constant flow QV until the airway pressure in the pipeline rises to 10cm H2O, and the moment t1 is recorded; if the airway pressure cannot rise to 10cm H2O within 10s, the detection is ended; otherwise, continuously detecting; and supplying air at a constant flow until the pressure of the air passage in the pipeline is increased to 40cm H2O. Linear system analysis and modeling are carried out on the pipeline, parameters in the model are estimated through flow measured by the flow sensor and pressure values measured by the pressure sensor, the compliance, resistance and leakage quantity parameters of the pipeline are conveniently and accurately obtained, operation is convenient, and the reliability of the pipeline is improved. And the test efficiency and the accuracy of a measurement result are greatly improved.

The invention provides a wearable mask (10) for monitoring a blood pressure value and providing a flow of gas at a positive pressure to the patient. The mask includes a first sensor (24a, 24b), configured to measure a time-dependent optical waveform from a first region underneath a first portion of the wearable mask, with the time dependent optical waveform including a first pulse. A second sensor (30a, 30b, 32a, 32b) measures a time-dependent impedance waveform from a second region proximal to the mask, with the time-dependent impedance waveform including a second pulse. A microprocessor (14) attaches to the wearable mask and is configured to: 1) receive digital representations of both the first and second pulses; 2) process the digital representations to determine a time difference between the first and second pulses, or a parameter calculated therefrom; and 3) process the time difference between the first and second pulses, or the parameter calculated therefrom, to determine the blood pressure value.

Disclosed herein is a CPAP device. In some embodiments, the CPAP device may be a bCPAP device. In some embodiments, the device may have one or more features that may assist in heating efficiency. In some embodiments, an air mixture is sent to a humidifier via an inlet conduit prior to introduction to a patient. In some embodiments, a water chamber of the humidifier may be recessed within a compartment. In some embodiments, waste heat from one or more components of the device may be used to pre-heat the air mixture in the inlet conduit.

A nasal dilator for treating breathing problem is provided, which includes a hollow nasal dilator body and a one-way flow resistance unit. The hollow nasal dilator body has a first end opening and a second end opening opposing the first end opening. The hollow nasal dilator body longitudinally extends from the first end opening to the second end opening and being adapted for insertion into a user's nostril with the second end opening placed within the user's nasal passage so that the hollow nasal dilator body supports and dilates the nasal passage. The one-way flow resistance unit is assembled to the hollow nasal dilator body and in proximity to the first end opening and away from the second end opening. The one-way flow resistance unit creates an exhalation flow resistance higher than an inhalation flow resistance such that an expiratory positive airway pressure is generated within the nasal passage.

The utility model discloses a rock drilling machine air compressor air pipe gas flow rate signal collector, which comprises a shell, an air passage gland, a connecting shaft, a rotary encoder and a central controller, and is characterized in that the left end and the right end of the shell are communicated to form an air flow passage; the connecting shaft is horizontally arranged front and back, the front end of the connecting shaft penetrates through the shell and enters the shell, and the rear end of the connecting shaft extends backwards and is rotationally connected with the shell. The air passage gland is vertically arranged in the shell, and the top end of the air passage gland is rotationally connected with the connecting shaft; and the rotary encoder is fixedly connected with the rear end of the rotating shaft and is connected with the central controller. The deslagging condition of the drill bit can be judged according to the air velocity, corresponding operation is carried out, hole blockage caused by unsmooth deslagging of the drill bit is prevented, the loss of the drill rod and the drill bit is reduced, and the drilling efficiency is improved.

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

An insufflator (1) for insufflating a peritoneal cavity (2) of a subject (3) comprises a microprocessor (25) operating a flow controller (19) in response to a signal read from a pressure sensor (29) indicative of cavity pressure for insufflating the cavity at a target pressure value. The microprocessor (25) reads a signal from a pressure sensor (37) indicative of the peak airway pressure of a subject, and operates the flow controller (19) and / or a venting valve (33) to reduce the cavity pressure to prevent the peak airway pressure of the subject exceeding a maximum safe peak airway pressure value. The heart rate of the subject (3) is also monitored, and insufflating of the cavity (2) is terminated on the heart rate of the subject falling below a predefined minimum heart rate value. The insufflator (1) may also be configured to monitor the depth of anaesthesia of a subject by monitoring an alternating component of cavity pressure induced in the cavity pressure by ventilating of and / or natural breathing of the subject.

The present invention provides a bionic composite artificial trachea, comprising: an artificial tracheal wall; the artificial tracheal wall comprising a biological patch layer and an absorbable biomaterial layer from the inside out; a tracheal stent disposed on the outside of the artificial tracheal wall; and a gasket wrapping the edge of the tracheal stent. The bionic composite artificial trachea, with the biological patch layer and the absorbable biomaterial layer as the artificial tracheal wall, combined with the arrangement of the tracheal stent, not only provides good ventilation, but also can slightly deform with airway pressure and has a certain degree of elasticity, so that the patient's head can move freely, without the trouble of having to fix the neck after traditional tracheal surgery; at the same time, the arrangement of the gasket can prevent the end of the tracheal stent from bruising surrounding organs due to friction during the initial implantation period; in summary, the bionic composite artificial trachea provided by the present invention can be applied clinically and can solve the problem of the lack of an effective tracheal substitute for primary tracheal reconstruction during the resection of an extra-long trachea in current tracheal surgery in a single operation.

Methods, apparatuses, and systems for determining a physiologically effective use of a positive airway pressure device of a target subject. The method includes obtaining one or more parameters recorded by the positive airway pressure device and determining a range of values for the one or more parameters. A simulated or ineffective use of the positive airway pressure device is identified when the range of values is outside a predefined tolerance range and a physiologic use of the positive airway pressure device is identified when the range of values is inside the predefined tolerance range.

This invention relates to the field of medical device technology and provides a method, system, and medical device for measuring peak cough flow rate. The method includes real-time acquisition of inspiratory and expiratory flow rate signals and airway pressure signals; monitoring changes in the expiratory flow rate signal to identify burst cough events and lock a cough analysis window; calculating the difference in inspiratory and expiratory flow rates within the cough analysis window to obtain a baseline cough flow rate sequence; calculating the airway pressure signal within the cough analysis window using a system leakage factor to obtain a leakage flow rate compensation sequence; determining coefficients based on the ratio of tubing and patient airway resistance parameters and multiplying the expiratory flow rate signals to obtain a tubing resistance compensation sequence; superimposing the above sequences to obtain a corrected flow rate sequence; and extracting extreme value features and evaluating the effectiveness of the corrected flow rate sequence generated after a preset number of iterations to determine the peak cough flow rate value. This invention solves the problems of inaccurate and inefficient measurement results in existing peak cough flow rate measurements.

According to a first aspect there is provided a portable emergency automatic ventilation device for use by untrained personnel, configured for CPR, relief of respiratory distress of a patient, and both, comprising: a blower / compressor connectable to a patient ventilation tube; a control unit comprising executable programs for regulating airflow and pressure; at least one air flow sensor for detecting inspiration and expiration; and, at least one pressure sensor for detecting pressure; wherein the compressor is programmable to deliver biphasic positive airway pressure (BiPAP) at a first inspiratory positive airway pressure (IPAP) and a second expiratory positive airway pressure, (EPAP), and the control unit comprises a manual selector for switching between the executable programs selected from predetermined CPR operative program instructing T mode ventilation and a respiratory distress operative program providing an S / T mode ventilation. A ventilation kit for use by untrained personnel configured for CPR, relief of respiratory distress of a patient, and both, and methods of using thereof, are also provided.

The utility model relates to the technical field of medical instruments, in particular to an anaesthesia machine rack and an anaesthesia machine. The anesthesia machine rack comprises a front shell assembly, an air inlet shell assembly and a lower shell assembly. The front shell assembly is detachably provided with a display screen of the anesthesia machine, an oxygen sensor, a manual machine control key, a flying shuttle knob, a quick oxygen supply valve button, an airway pressure gauge, an air source pressure gauge, a flowmeter assembly, a total flow tube, a flow adjusting knob and a breathing loop. The air inlet shell assembly is used for detachably installing an evaporator and an air inlet assembly of the anaesthesia machine. The lower shell assembly is used for detachably installing a turbine assembly, a power supply assembly and a communication assembly of the anaesthesia machine; the front shell assembly and the air inlet shell assembly are located above the lower shell assembly, and the front shell assembly is connected with the air inlet shell assembly and the lower shell assembly through riveting connecting pieces. According to the anesthesia machine rack, the stability and rigidity of the whole rack are improved, the structure is small and exquisite, firmness and stability are achieved, the strength is high, and assembly of parts is facilitated.

A pressure detection device and ventilation equipment, wherein the pressure detection device includes a partition member with a ventilation cavity provided through it in the axial direction and a detection cavity provided in the partition member in the radial direction, the port of the ventilation cavity located on one side of the partition member is used to seal the outlet end of the gas pressurizing device, the port of the ventilation cavity located on the other side of the partition member is used to seal the inlet end of the gas humidifying device, and the detection cavity is connected to the ventilation cavity for installing the pressure detection member. Setting the pressure detection position at the end of the gas pressurizing device can not only reduce the air pressure fluctuations generated by the gas pressurizing device, but also play a role in stabilizing the pressure with the help of the gas humidifying device, so that the pressure detection result is more accurate; at the same time, because the detection position is close to the patient end, it can more truly reflect the patient's airway pressure, and the gas pressurizing device can be regulated according to the pressure feedback, which can avoid causing discomfort to the patient and allow the patient to breathe naturally and comfortably.

The invention relates to the technical field of snoring patient treatment, and discloses a snoring patient lower jaw position and airway pressure linkage adjusting device which comprises a breathing machine body, a mask is connected to one end of an air delivery pipe, a tap is mounted on the outer wall of one end of the air delivery pipe, and an upper gear sleeve is connected to one end of a first air guide pipe; according to the breathing machine, the lower jaw airway linkage adjusting mechanism is arranged, oxygen on the breathing machine body can enter the first hose through the tap joint, and when a snore symptom patient wears a mask, the oxygen can enter the first hose through the tap joint, so that the breathing machine body is more comfortable to wear, and the breathing machine body is more comfortable to wear. An upper tooth sleeve and a lower tooth sleeve on one side of the mask are worn in the oral cavity of a patient, oxygen intermittently enters a second hose, air bags on the upper tooth sleeve and the lower tooth sleeve are intermittently expanded and contracted, then the throat of the lower jaw of the patient in sleep is intermittently expanded, gas between the lower jaw and an airway flows in a linkage mode, and therefore the patient can feel more comfortable. And the patient can breathe smoothly.

The invention discloses a plateau altitude self-adaptive compensation system and method for an emergency breathing machine. The plateau altitude self-adaptive compensation system comprises a sensing module, a control module, a power module, a gas circuit driving circuit, a man-machine interaction module, an execution module and an additional function module. Acquiring a plateau altitude self-adaptive compensation data set; the plateau altitude adaptive compensation data set comprises altitude height information, fan parameter information, atmospheric pressure information, airway pressure information, gas flow information and temperature information; training a preset fan drive control model by using the plateau altitude self-adaptive compensation data set to obtain an optimized fan drive control model; and processing plateau altitude self-adaptive compensation data to be processed by utilizing the optimized fan drive control model to realize plateau altitude self-adaptive compensation of the emergency breathing machine. The method can adapt to different altitudes and automatically compensate the influence of atmospheric pressure change on tidal volume and minute ventilation output precision.

This invention relates to the field of high-frequency ventilator technology and discloses a high-frequency ventilator operating method based on flow control. The high-frequency ventilator sequentially outputs multiple average airway flow rates of the same or different magnitudes and with the same or different durations according to a set periodic pattern. The airway flow rate output is stable during the expiratory and inspiratory phases, and the average airway flow rate can be output at the same or different magnitudes during different inspiratory and expiratory phases. The output gas flow rate of the high-frequency ventilator can be independently adjusted periodically between different ventilation flow rate levels within different durations. In high-frequency ventilation, the flow control-based high-frequency ventilation method can precisely control the gas flow rate and time. Flow control ventilation can better control changes in airway pressure. By setting appropriate flow rates and times, the delivery volume of the device can be accurately estimated to reduce airway pressure and risks, and lower the possibility of barotrauma.

This disclosure provides a breathing recognition method applicable in a ventilation apparatus. In the breathing recognition method, an airway pressure and a gas flow rate can be acquired during mechanical ventilation; correlation data corresponding to the airway pressure and the gas flow rate can be determined according to the airway pressure and the gas flow rate; and a breathing state of a patient can be recognized according to a change in the correlation data.

The invention discloses a calibration system and method for a medical simulated lung. The calibration system comprises a gravity air bellow device connected with the simulated lung. The bottom of the gravity air bellow device is connected with the simulated lung; a weight module is arranged at the top of the gravity air bellow device, the side wall of the gravity air bellow device has deformation and rebounding capabilities in the vertical direction, and the top of the gravity air bellow device can be downwards compressed and deformed under the action of the weight module so as to exhaust gas to the simulated lung; a flow meter and a pressure meter are installed on the air channel and used for measuring the pressure value and the air flow rate in the simulated lung in the air exhausting process. The gravity generated by the weight module is gradually increased to act on the air bellow, the air bellow is promoted to be compressed and deformed, gas is gradually injected into the simulated lung, the pressure gauge and the flow instrument are adopted for monitoring, the gas volume and the airway pressure are obtained, and the compliance and the compliance curve of the medical simulated lung can be calculated. Therefore, whether the technical parameters of the medical simulated lung meet the requirements or not is verified.

A ventilation detection method applied to a ventilation apparatus. The method may include monitoring respiratory parameters during mechanical ventilation of a patient by using a ventilation apparatus, the respiratory parameters at least comprising one of airway pressure and airway flow, and using changes in the respiratory parameters to identify whether man-machine counteraction or ventilation leakage has occurred.