34 results about "Breathing gas" patented technology

A seal for a patient interface configured to provide respiratory therapy to a patient is provided. The seal comprises a hollow body comprising a proximal end and a distal end, the proximal end comprising an inlet opening and the distal end comprising an outlet opening. The hollow body is configured to provide, in use, a flow path for breathing gases from the inlet opening to the outlet opening. The seal further comprises a membrane extending outwardly from the hollow body. The membrane comprises a sealing surface configured to seal against an exterior surface of or adjacent a single external nare of the patient. A patient interface comprising the seal is also provided.

The present invention relates to a respiratory gas supply device comprising at least one respiratory gas line for guiding a respiratory gas mixture. The respiratory gas line comprises at least one outlet from which the respiratory gas mixture can be discharged at least partially and at least temporarily. The respiratory gas line comprises an inspiratory branch tube configured to guide respiratory gas to a connection for a patient interface. The respiratory gas line comprises an expiratory branch tube configured to guide respiratory gas between the connection for a patient interface and the outlet. The device is characterized in that the respiratory gas line comprises at least one shut-off valve configured and designed to establish at least temporarily a connection for guiding respiratory gas from the expiratory branch tube to the inspiratory branch tube.

This application relates to the field of medical device technology, and more particularly to a respiratory gas absorption filter, comprising a housing, an air inlet pipe and an air outlet pipe disposed on the housing, a guide vane disposed on the air inlet pipe, a first thin cotton and a first thick cotton disposed at one end of the interior of the housing, and a second thick cotton, a plastic sheet, corrugated paper and a second thin cotton disposed at the other end of the interior of the housing, wherein the plastic sheet is uniformly provided with at least one vent hole, and an adsorption medium is disposed inside the housing. Therefore, a respiratory gas absorption filter can solve the technical problems of existing adsorption media having fine particles that are easily squeezed out from the gap between the adsorption cotton and the canister under the impact of high-frequency airflow or equipment vibration of anesthesia machines, and the simple pore structure of the adsorption cotton material used in traditional adsorption canisters, which causes condensate to accumulate inside the canister under long-term gas exposure.

This invention discloses a device and method for controlling the source of breathing gas from solvent storage tanks, belonging to the field of volatile organic compound (VOC) pollution control technology. The device includes at least two solvent storage tanks, an automatic foam ball dosing system, a gas phase connection pipeline, and a variable-volume airbag. The automatic foam ball dosing system adds foam balls to the liquid surface of each solvent storage tank, forming a liquid surface covering layer. The gas phase spaces of each solvent storage tank are interconnected through the gas phase connection pipeline, forming a gas phase balance system. The variable-volume airbag is connected to the gas phase connection pipeline or the gas phase space of one of the solvent storage tanks to collect and store breathing gas. The method of this invention reduces the liquid phase evaporation area by covering the liquid surface with foam balls, combines multi-tank series gas phase connection to balance the breathing gas between tanks, reduces gas phase emissions, and uses a variable-volume airbag to buffer and reuse the breathing gas, achieving full-process source control and near-zero emissions of breathing gas. It features low investment and operating costs and significant pollution control effects.

A method for determining rebreathed gas fractions in a respiratory gas supply system using specific respiratory or ventilation parameters, wherein the expiratory flow and the leakage flow are recorded during a respiratory cycle, the expiratory and leakage volumes resulting from the integration of these two flows are determined, and the rebreathing fraction (VR) is determined as the difference between the expiratory volume and the leakage volume (VR = VE - VL), and an alarm is generated if a critical value for the determined FiCO2 is exceeded or if VR > 0, characterized in that, if VR > 0, the fraction of CO2 in the subsequent inspiration that is formed at the end of inspiration by the mixing of rebreathed air with fresh air in relation to the total inspired volume in the lungs (FiCO2) is estimated, and wherein the estimation of FiCO2 is carried out taking into account anatomical dead spaces.

The application discloses a diving decompression sickness dynamic prediction and risk assessment system of multi-tissue parallel computation, relates to the fields of diving medicine, high-pressure medicine and human physiology modeling, and comprises a tissue unit planning module, a central blood circulation and coupling module and a model calculation and risk assessment module. The system divides a human body into a plurality of core physiological tissue units, and plans each tissue unit as a hybrid model composed of three sub-units of "fast-middle-slow". Then, the system simulates a human circulatory system by defining cardiac output, arterial blood inert gas partial pressure and dynamically distributing blood flow according to the tissue type, so as to construct a simulation model. Finally, according to the environmental pressure-time profile corresponding to a diving plan and the breathing gas composition, the simulation model is used to parallelly calculate the inert gas tension of all tissue units and sub-units, so as to be used for dynamic prediction and risk assessment of decompression sickness. The application provides a higher safety margin for saturation diving and repeated diving.

The application provides a respiratory support device and an oxygen concentration detection method thereof. The method comprises the following steps: acquiring a gas characteristic of gas in a respiratory gas flow path and / or a device parameter of the respiratory support device; and determining a target oxygen concentration detection value according to the gas characteristic and / or the device parameter, and optionally outputting the target oxygen concentration detection value, wherein the target oxygen concentration detection value is obtained according to an oxygen concentration detection value of an ultrasonic oxygen sensor at a target moment or a target period when interference of interference gas on oxygen concentration detection meets a preset condition. Thus, the oxygen concentration detection value is not affected by interference, and the detection accuracy is improved.

To provide an improved respiratory gas humidifier that humidifies and / or heats respiratory gases. [Solution] The breathing gas humidifier 1 comprises a housing 20, the housing 20 comprising an upper housing 21 and a lower housing 23, the lower housing 23 comprising a water chamber 5 for humidifying and / or heating the breathing gas. The breathing gas humidifier 1 comprises a breathing gas inlet 2 and a breathing gas outlet 4. A breathing gas path 3 is formed between the breathing gas inlet 2 and the breathing gas outlet 4, leading the breathing gas from the breathing gas inlet 2 to the breathing gas outlet 4, and the breathing gas path 3 is led through the water chamber 5. The breathing gas path 3 includes a watertight channel 8 that leads the humidified and / or heated breathing gas, the channel 8 having one end 7 join the water chamber 5 and the other end join the breathing gas outlet 4. The channel 8 is configured such that the breathing gas outlet 4 is located in and / or at least partially formed by the lower housing 23.

A respiration device is for positive pressure ventilation and continuous positive airway pressure treatment for neonatal resuscitation. The respiration device includes a body part with a) a breathing gas inlet fluidly couplable to a breathing gas supply, b) a breathing gas outlet in fluid communication with the breathing gas inlet and fluidly couplable to a patient interface, c) a first outflow port, and d) a second outflow port for releasing breathing gas from the body part, the second outflow port being fluidly couplable to one or both an expiration valve and an expiratory branch of a ventilation machine; and a continuous positive airway pressure, CPAP, generator fluidly coupled between the breathing gas inlet and the breathing gas outlet to generate a positive end-expiratory pressure for CPAP treatment. The respiration device is operable in a CPAP mode for CPAP treatment and a positive pressure ventilation, PPV, mode for PPV treatment.

To administer a nitric oxide-containing application gas into a patient's breathing gas, the patient is supplied with breathing gas via a breathing gas supply line connected to a ventilation interface. A nitric oxide-containing application gas from a gas source is introduced into the breathing gas via an application gas supply line that connects to the breathing gas supply line and / or the ventilation interface. According to the invention, the gas flow of the application gas is regulated by the control device such that the supply of application gas is interrupted for a predetermined period and then resumed in order to test the patient's rebound response to the artificial iNO administration.

This invention discloses a medical respiratory gas humidification and diversion device, relating to the field of medical technology. It includes a phase-cancellation dual-metering water supply component, used to structurally cancel the water supply pulsation component induced by gas path pressure ripple in the water supply path at the water supply junction point, to output smooth low-frequency water supply; and an adjustable hydraulic notch pilot component, used to convert the gas path pressure ripple into a hydraulic pilot signal and generate a pilot signal with a set phase shift, to drive the phase-cancellation dual-metering water supply component to form an inverted output. This invention achieves structural ripple cancellation at the junction point by constructing the water supply path as an adjustable notch pilot phase shift network and driving the dual-metering chamber inverted output. Simultaneously, it combines diversion ratio mirror distribution control to achieve branch humidification consistency, thereby suppressing intermittent droplet carrying and diversion humidity imbalance induced by pressure ripple without changing the existing device type.

1. Name of the product in this design: Breathing Gas Cylinder Storage Cabinet. 2. Purpose of this design: For placing breathing gas cylinders. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: 3D model 2.

A portable respiratory device for supplying respiratory gas to a living being, including: a housing; a respiratory gas conveying apparatus which is designed to convey inspiratory respiratory gas to a respiratory gas housing outlet of the housing; an input / output apparatus for the input of control commands and for the output of information; a control apparatus which is connected to the input / output apparatus and to the respiratory gas conveying apparatus for transferring signals; a first, grid-based power supply which is designed to be connected to a grid voltage source that is external in respect of the respirator device in order to transfer electricity and which is designed and arranged in order to supply electricity to the control apparatus, the input / output apparatus and the respiratory gas conveying apparatus; wherein the respiratory gas conveying apparatus, the input / output apparatus, the control apparatus and the first power supply are received in the housing; the respiratory device has a second, storage-based power supply which has an electricity storage device for storing electrical energy and which is designed at least to supply the respiratory gas conveying apparatus with electricity.

The utility model discloses a kind of respiratory air path switching devices, comprising: breathing main pipeline;First air chamber, connected with breathing main pipeline;Second air chamber, connected with breathing main pipeline;Air supply component, between first air chamber and second air chamber are set, so that airflow enters second air chamber from first air chamber;Gas exchange chamber, connected with outside, simultaneously connected with first air chamber and second air chamber;First switch valve, set in first air chamber, for switching the gas flow direction in first air chamber;Second switch valve, set in second air chamber, for switching the gas flow direction in second air chamber.Gas exchange chamber includes air inlet chamber and exhaust chamber, air inlet chamber and exhaust chamber are communicated, and are connected with outside by pipeline, air inlet chamber is connected with first air chamber, exhaust chamber is connected with second air chamber.The problem that the existing breathing switching equipment line layout is complex, control program is also complex, inconveniently switching the air intake and air outlet of trachea is solved.

There is disclosed a bypass valve for providing a constant flow of breathing gas through a lung demand regulator, the bypass valve comprising a body and a plunger disposed in the body, the plunger being configured to move between a closed configuration in which breathing gas is prevented from flowing through the bypass valve and an open configuration in which breathing gas is permitted to flow through the bypass valve; wherein the plunger forms an inlet opening between the plunger and the body for gas to enter the bypass valve and the body comprises an outlet opening for gas to exit the bypass valve, wherein the outlet opening defines a maximum gas flow rate through the bypass valve. Also disclosed is a lung demand regulator and a breathing apparatus.

There is disclosed a bypass valve for providing a constant flow of breathing gas through a lung demand regulator, the bypass valve comprising a body and a plunger disposed in the body, the plunger being configured to move between a closed configuration in which breathing gas is prevented from flowing through the bypass valve and an open configuration in which breathing gas is permitted to flow through the bypass valve; wherein the plunger forms an inlet opening between the plunger and the body for gas to enter the bypass valve and the body comprises an outlet opening for gas to exit the bypass valve, wherein the outlet opening defines a maximum gas flow rate through the bypass valve. Also disclosed is a lung demand regulator and a breathing apparatus.

Disclosed is respiratory assistance apparatus comprising a flow generator configured to provide breathing gases to a patient, the breathing gases comprising supplemental oxygen provided from an oxygen source. The respiratory assistance apparatus controller is configured determine a target oxygen concentration of the breathing gases and calculate an estimated future value of the patient's blood oxygen concentration based on a difference between an initial oxygen concentration of the breathing gases and the target oxygen concentration of the breathing gases, and the patient's blood oxygen concentration.

A humidification assembly and a respiratory ventilation apparatus are provided. The humidification assembly is for humidifying pressurized breathing gas provided by a respiratory ventilation apparatus, the humidification assembly comprising a liquid chamber for containing one or more liquids, the liquid chamber comprising a tank, a tank lid, the tank lid comprising a first gas passage, a second gas passage, a humidification assembly gas inlet configured to introduce the pressurized breathing gas into the tank via the first gas passage, and a humidification assembly gas outlet configured to introduce humidified and pressurized breathing gas out of the tank via the second gas passage.

The utility model discloses an artificial airway coverer, effectively convenient for medical staff to cover artificial airway, including first arc plate and second arc plate, the front side rotation connection of first arc plate and second arc plate, the upper side of first arc plate and second arc plate all are equipped with rotatable cover plate, the breathing gap for ventilating is equipped between first arc plate and second arc plate, the downside of each cover plate all is equipped with first limit plate, and the outside of each cover plate downside all is equipped with humidification mechanism, the utility model discloses novel structure, clever idea, easy and simple convenient operation, effectively convenient for clamping artificial airway, convenient for medical staff operation, convenient for the storage of device, realize better covering effect, can carry out humidification to respiratory gas when offline training.

The invention relates to an analysis device for compressed gas in a compressed gas cylinder, such as a breathing gas cylinder, for determining gas components, in particular CO, CO2, O2, VOC, SO2, NO, NO2, helium and moisture, having a withdrawal device which can be connected to the compressed gas cylinder, characterized in that the withdrawal device comprises a connection element which is under the pressure of the compressed gas to be analyzed in the compressed gas cylinder and can be connected to a gas treatment device having a gas measuring and evaluation device for determining the desired gas components, the connection element is also pressurized when not connected to the compressed gas cylinder, preferably by means of a shut-off valve, and the gas treatment device and the gas measuring and evaluation device are also configured to monitor and analyze the compressed gas dispensed by the compressor for filling the compressed gas cylinder.

The application discloses an intermittent production device breathing exhaust gas utilization process and system, and belongs to the technical field of waste gas treatment. The system comprises an exhalation gas collecting main pipe, an inhalation return main pipe, a first buffer tank, a second buffer tank and a bottom communication pipe. The first buffer tank is filled with a buffer liquid and is provided with a sealable isolation piece that can move up and down, and the second buffer tank is a closed container and is filled with inert gas. When the production equipment feeds, the exhalation gas enters the first buffer tank, pushes the buffer liquid into the second buffer tank to compress the inert gas to realize energy storage. When the production equipment discharges, the compressed inert gas expands, pushes the buffer liquid back to the first buffer tank, and the stored exhalation gas is pushed back to the production equipment. The application utilizes the original power of the feeding pump to realize the non-powered recycling of the breathing gas, is suitable for positive pressure and negative pressure working conditions, has the advantages of zero emission, no additional energy consumption, wide application range, low investment and the like.

This present disclosure relates to a system and method for providing a flow of respiratory gases to a patient. The system includes a controller, a flow modulator, and one or more sensors, wherein the controller is configured to control the flow modulator to modulate the flow of respiratory gases in response to determined pressure in the system exceeding or not exceeding a pressure threshold value.

An apparatus for humidifying a flow of breathable gas includes a water reservoir and a water reservoir dock forming a cavity structured and arranged to receive the water reservoir in an operative position. The water reservoir comprises a reservoir base including a cavity structured to hold a volume of water, the reservoir base including a main body and a thermally conductive portion provided to the main body. The thermally conductive portion comprises a combined layered arrangement including a metal plate and a thin film, the thin film comprising a non-metallic material and including a wall thickness of less than about 1 mm. The thin film is adapted to form at least a bottom interior surface of the water reservoir exposed to the volume of water, and the metal plate is adapted to form a bottom exterior surface of the water reservoir.

Device for guiding respiratory gas, characterized in that means for ventilation and means for coughing support are integrated simultaneously and, in addition to a ventilation pressure intended for ventilation, an increased airway pressure is generated at least temporarily, wherein air is stacked in the lungs over several breaths and wherein the coughing aid (10) is a controlled negative pressure generator.

The present disclosure generally relates to systems and methods for delivery of therapeutic gas to patients, using techniques to compensate for disruptions in breathing gas flow measurement, such as when breathing gas flow measurement is unavailable or unreliable. Such techniques include using historical breathing gas flow rate data, such as moving average flow rates, moving median flow rates and / or flow waveforms. At least some of these techniques can be used to ensure that interruption in therapeutic gas delivery is minimized or eliminated.

This invention provides a device for testing the total response time of respiratory gas monitors, comprising: a base with a medium pipeline for connecting test gas cylinders and multiple respiratory gas monitors; a timer and a monitor mounted on the base, the monitoring area of ​​the monitor covering the timer and each respiratory gas monitor. During the test, test gas is introduced from the test gas cylinders to each respiratory gas monitor through the medium pipeline. The monitor monitors the parameters displayed on the screens of each respiratory gas monitor and obtains the response time of each respiratory gas monitor based on the timer's count. In summary, in the first aspect, the testing device of this application can achieve batch testing of multiple respiratory gas monitors, thereby improving testing efficiency; in the second aspect, only one timer is needed to test the response time of multiple respiratory gas monitors, saving material costs.

This invention relates to the field of neurophysiological signal acquisition technology, and proposes an olfactory evoked potential acquisition system and method based on respiratory gas flow triggering. The system includes preprocessing the acquired inspiratory flow signal, identifying the inspiratory signal, and determining a valid inspiratory event when the inspiratory flow value, inspiratory flow rate of change, inspiratory duration, and local inspiratory integral value simultaneously meet preset conditions. A labeling signal is then sent to the EEG acquisition device to obtain a labeled event. For each labeled event's time node, waveforms within a set time period before and after the obtained EEG signal are extracted. The waveforms extracted from all labeled events are then superimposed and averaged to obtain the olfactory evoked potential signal waveform. This invention constructs a closed-loop triggered olfactory evoked potential acquisition architecture based on real inspiratory behavior, achieving precise synchronization between stimulus input and EEG labeling.

The invention relates to a breathing gas humidifier (1) with a housing (20) comprising a housing upper part (21) and a housing lower part (23) with a water chamber (5) for humidifying and / or warming a breathing gas, wherein the breathing gas humidifier (1) comprises a breathing gas inlet (2) and a breathing gas outlet (4), wherein a breathing gas path (3) for directing the breathing gas from the breathing gas inlet (2) to the breathing gas outlet (4) is formed between the breathing gas inlet (2) and the breathing gas outlet (4), which is guided through the water chamber (5), wherein the breathing gas path (3) comprises a watertight channel (8) for directing the humidified and / or warmed breathing gas, which opens into the water chamber (5) at one end (7) and into the breathing gas outlet (4) at the other end, wherein the channel (8) is configured such that the breathing gas outlet (4) is located on the housing lower part (23) is arranged and / or is at least partially formed by this.