508 results about "Breathing gas" 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 atomization control method and system based on a breathing machine, and belongs to the technical field of breathing gas instruments. The method comprises the steps that after receiving a handshake request signal from a second microcontroller, a first microcontroller establishes serial port communication connection with an atomizer based on the handshake request signal so as to receive an atomizer control protocol sent by the second microcontroller; wherein the handshake request signal is generated based on the operation that the communication wire is connected to the communication interface of the atomizer; the atomizer control protocol at least comprises an instruction required by the respirator to control the atomizer; determining a breathing stage corresponding to the patient according to the breathing information of the patient from the breathing sensor; and after an atomization control instruction is received and before a breathing phase enters, according to an atomizer control protocol, continuously generating an inspiration phase fog supply instruction and sending the inspiration phase fog supply instruction to the second microcontroller, so that the atomizer carries out synchronous fog supply along with the air supply airflow of the breathing machine based on a preset delayed fog outlet duration and stops fog supply in an expiration phase.

A user interface comprising a non-sealing nasal cannula and a mask arranged about the nasal cannula, the mask including a seal configured with a user's face to allow the interface to be pressurised, the cannula configured to deliver breathing gases to the nares of a user at a flow rate exceeding the intended user's peak inspiratory flow requirements so that the mask and the user's pharynx are flushed continuously with fresh breathing gases to reduce dead space.

The invention relates to the technical field of medical protection tools, and discloses a respiratory tract infection-free throat swab collecting device which comprises a transparent mask, a shell is arranged on the outer side of the transparent mask, a filtering mechanism is arranged on the transparent mask, a collecting swab and a push block are arranged in the shell, a round plate is arranged on the outer side of the push block, and a through hole is formed in the round plate. And cutting mechanisms are further arranged in the shell, the cutting mechanisms are distributed on the two sides of the shell, and each cutting mechanism comprises a sliding block, a connecting assembly, a pushing assembly and a cutting knife. The effect of automatically cutting off the collecting swab after collecting is completed is achieved, so that the problem that after collecting of the collecting swab is completed, the collecting swab needs to be manually broken off is avoided, a filtering mechanism can filter breathing air of a patient and airflow generated during sneezing and coughing, and therefore the collecting swab is prevented from being manually broken off. And the effect that the collecting swab is moved out of the oral cavity or the nasal cavity of the patient through one key can be achieved.

Apparatus and methods for delivering humidified breathing gas to a patient are provided. The apparatus includes a humidification system configured to deliver humidified breathing gas to a patient. The humidification system includes a vapor transfer unit and a base unit. The vapor transfer unit includes a liquid passage, a breathing gas passage, and a vapor transfer device positioned to transfer vapor to the breathing gas passage from the liquid passage. The base unit includes a base unit that releasably engages the vapor transfer unit to enable reuse of the base unit and selective disposal of the vapor transfer unit. The liquid passage is not coupled to the base unit for liquid flow therebetween when the vapor transfer unit is received by the base unit.

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

A sensor and method for determining the state of a humidification chamber in a respiratory gas humidifier. The sensor comprises a transmitter for emitting an electromagnetic radiation signal, a receiver for receiving the electromagnetic radiation signal and providing an output signal, and a controller for varying the intensity of the electromagnetic radiation signal emitted by the transmitter and / or the gain setting of the receiver. The controller has two sensor configurations, a first configuration in which the transmitter emits an electromagnetic radiation signal having a first intensity, the receiver has a first gain setting, and the receiver provides a first output signal, and a second configuration in which the transmitter emits an electromagnetic radiation signal having a second intensity, the receiver has a second gain setting, and the receiver provides a second output signal, wherein the first intensity is different to the second intensity, and / or the first gain setting is different to the second gain setting, and the controller determines a state of the humidification chamber by comparing the first and second outputs of the receiver with one or more threshold values.

A patient interface cushion and specifically a patient interface cushion with fabric, configured to supply pressurized breathing gas to the nasal and oral airways of a user. The patient interface cushion includes a rigid part, configured to support the elastic part, featuring a first opening and a second opening; The elastic part, configured to provide an attachment surface for the fabric part, featuring a third opening in communication with the second opening and a fourth opening allowing the user's nose and mouth to enter the internal cavity of the elastic part. The fabric part, configured to form a sealing area between the lower lip area and the nasal bridge area, featuring a first surface partially connected to the elastic part, a second surface sealing at least a portion of the user's face, and also having an inner edge and an outer edge.

The invention relates to the technical field of respirators, and discloses a respirator flow dynamic adjusting system based on airflow sensing, which is characterized in that after starting, a multi-mode sensing module acquires spatial flow velocity distribution and dynamic characteristics of respiratory airflow, and generates a composite data flow fused with flow field information; the composite data flow is subjected to nonlinear analysis to generate a state vector representing breathing stability, and the state vector is used for identifying fluid abnormal risks; the state vector generates an optimized execution instruction set by the self-adaptive control engine in combination with the energy state of thermoelectric conversion; the execution instruction set drives the piezoelectric valve and the shear response humidifying layer to cooperatively adjust the flow and the humidity, and outputs physiologically matched breathing gas; fusion collection of spatial flow velocity distribution and dynamic characteristics of respiratory airflow is achieved through the multi-mode sensing module, the limitation of traditional single-point measurement is broken through, and the sensing precision is remarkably improved; a breathing chaos index is constructed through nonlinear kinetic analysis, and early warning of the breathing rhythm stability and the fluid abnormal risk is achieved.

The invention discloses a pressurized oxygen supply mask breathing gas multi-component synchronous monitoring device and method.The device comprises a mask cavity inner unit, and the mask cavity inner unit comprises a photoelectric detection system; the photoelectric detection system comprises an O2 laser and an O2 detector which are used for O2 molecular spectrum detection, a CO2 and H2O laser and a CO2 and H2O detector which are used for simultaneously detecting CO2 and H2O molecular spectrums, a dichroic mirror I and a dichroic mirror II which are used for coupling and separating two paths of laser beams, and a temperature, pressure and relative humidity integrated sensor which is arranged in a breathing gas to-be-detected area; the mask cavity external unit comprises an electronics system, and the electronics system comprises a data acquisition module, a laser control module and a system control and data processing analysis module. The device has the advantages of short response time, intrinsic safety and high stability and reliability, the overall structure is more compact, and the device has high general practicability in practical application.

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 discloses a human body breathing heat metabolism detection device and method based on a piston type air cylinder. The detection device comprises a flow detection module, a respiratory gas sampling module, a gas concentration analysis module, a control unit and a computer, wherein the flow detection module is used for two-way flow detection of respiratory gas; the breathing gas sampling module is used for sampling and collecting breathing gas, physically averaging and discharging the breathing gas at constant flow; the gas concentration analysis module is used for concentration detection and concentration calibration of oxygen and carbon dioxide in respiratory gas; the control unit is responsible for control and signal acquisition of motors, valves, sensors and the like in the device; the computer is responsible for data collection, calculation and analysis, man-machine interaction and result display. The detection method comprises the following steps: firstly, carrying out concentration calibration, then, carrying out a metabolism test on a subject based on a breathing mask or a breathing machine, and finally, calculating and obtaining a metabolism index according to the measured gas concentration and flow parameters. The method can be applied to two metabolism detection scenes of mechanical ventilation and spontaneous respiration, the test is reliable, and engineering realization is easy.

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 utility model provides a gas distribution device for a centrifugal machine, which comprises a gas distribution disc and two sets of gas sources connected with the gas distribution disc, the gas distribution disc comprises a panel, and a gas supply path and two gas inlet paths are arranged on the panel; the two air inlet paths are respectively connected with the two sets of air sources and are connected with the air supply path through an air source tee joint; and a pressure reducing valve and a gas supply ball valve are arranged on the gas supply circuit. According to the utility model, corresponding breathing gas and test gas are continuously provided for the whole training process of the centrifugal machine; according to the utility model, a panel fixed structure is designed, and all components and pipelines are installed parallel to the panel; the device has the characteristics of compact layout, space saving and convenience in installation; and the safety and the reliability of the gas distribution device are improved through the two sets of gas sources.

A humidification system comprises a first sensor and a second sensor. The first and second sensors are adapted to sense flow characteristics within the system. The first and second sensors are isolated from the flow by barriers formed by respective first and second sealing members. The sealing members extend through apertures formed in the system and have a portion that contacts the sensing elements of the respective first and second sensors. A cartridge can hold the sensors and provide repeatable penetration depths into a flow passage of the system. A medical tube has a composite structure made of two or more distinct components that are spirally wound to form an elongate tube. One component can be a spirally wound elongate hollow body; the other component can be an elongate structural component spirally wound between turns of the spirally wound hollow body.

A system and method for enhanced aerosol drug delivery during high flow nasal cannula (HFNC) therapy. The system comprises a breath enhanced jet nebulizer (BEJN) connected to a high flow medical breathing gas supply supplying breathing gas to the BEJN at flow rates of 5 L / min to 60 L / min, a nebulization gas supply, a drug infusion device that supplies a drug solution to the nebulizer for the delivery of nebulized drug to a patient. All the breathing gas and nebulized drug solution delivered to the patient passes through the BEJN. The rate of drug delivery increases with increases in the flow rate of the medical breathing gas supply and increases in infusion pump flow rates. The drug solution infusion rate is between 5 mL / hour and 50 mL / hour. This system and method enable efficient aerosol drug delivery to patients during HFNC therapy for prolonged periods, improving treatment outcomes.

A breathing mask includes a rigid member, an elastic member, and a foam member. The rigid member has an interface on the side away from the user's face for accessing the breathing gas of the continuous positive airway pressure device, and a flared joint on the side adjacent to the user's face. The elastic member is in communication with the inner cavity of the rigid member and is fixedly connected to the flared joint. The side of the elastic piece adjacent to the user's face at least partially abuts the user's nasal bridge area to form an elastic body part, and a support part connected to the elastic body part is provided on the side of the elastic member adjacent to the user's face. The foam member is fixed to the support part and, together with the elastic member, forms a sealing surface for fitting the user's face.

The invention relates to the technical field of medical test equipment. The invention discloses an exercise cardiopulmonary test breathing gas separation device and a use method, the top end, the left end and the right end of a breathing separation test mask are each provided with an elastic bandage for helping the breathing separation test mask to be fixed to the head of a user, and the end, not connected with the breathing separation test mask, of each elastic bandage is provided with an insertion buckle; a first plug is vertically arranged at the top of the adjusting box, the first plug is in sliding connection with the top of the adjusting box in the vertical direction, two second plugs are symmetrically and horizontally arranged at the left end and the right end of the adjusting box, the two second plugs are in sliding connection with the left end and the right end of the adjusting box respectively, and a real-time tightening device is arranged in the adjusting box; according to the device, on the premise that the wearing comfort is guaranteed, the wearing tightness between the testing equipment and the head of the user is adjusted in real time according to the running speed of the user, and therefore the effect that the wearing comfort and the head fitting degree are mutually balanced is achieved.

The invention discloses a diving bell air supply system for diving and an air supply method thereof.The air supply system comprises a diving bell body, a diving bell umbilical cord, a diver umbilical cord and a bell-borne air supply unit, the diving bell umbilical cord comprises an air supply pipeline and a breathing air pipeline, and high-pressure environment air is provided for the diving bell body, and breathing air is provided for operators; the clock-borne gas supply unit comprises a helium bottle, a liquid nitrogen Dewar bottle and a liquid oxygen Dewar bottle, high-pressure helium-oxygen mixed gas is stored in the helium bottle, gas outlet pipelines of the liquid nitrogen Dewar bottle and the liquid oxygen Dewar bottle are connected to the breathing gas supplementing pipe in parallel, and supplemented nitrogen and / or oxygen are / is adjusted based on the working depth of the diving clock body. The breathing air supply pipe and the breathing air supplementing pipe are connected to the inlet end of the busbar after being connected in parallel and converged, the inlet end of the busbar is further connected with a breathing air pipeline, and the outlet end of the busbar is connected with multiple diver umbilical cords. The proportion of helium, nitrogen and oxygen can be flexibly adjusted according to the current operation depth of the diving bell, and the breathing requirements of divers at different water depths are effectively met.

The invention relates to a control method of auxiliary breathing equipment, a controller, equipment and a storage medium. The auxiliary breathing equipment comprises a first cavity, a second cavity, a pipeline assembly and a gas driving assembly. The method comprises the following steps: periodically acquiring detection information of intra-pulmonary pressure during the period of providing ventilation support by the auxiliary breathing equipment; in response to the fact that the detection information of the intra-pulmonary pressure exceeds a preset pressure range, pressure reduction operation or pressure increase operation is executed to adjust the intra-pulmonary pressure to be within the preset pressure range; the decompression operation comprises the steps that the pipeline assembly and the gas driving assembly are controlled, so that redundant gas in the lung is exhausted to the external environment through the second cavity in the process of maintaining partial gas circulation of the lung between the first cavity and the lung; the pressurization operation comprises the steps that the pipeline assembly and the gas driving assembly are controlled, so that gas of the breathing gas source is introduced into the lung through the first cavity in the process of maintaining partial gas circulation of the lung between the second cavity and the lung. The safety of ventilation support can be improved.

A patient interface cushion and specifically a patient interface cushion with fabric, configured to supply pressurized breathing gas to the nasal and oral airways of a user. The patient interface cushion includes a rigid part, configured to support the elastic part, featuring a first opening and a second opening; The elastic part, configured to provide an attachment surface for the fabric part, featuring a third opening in communication with the second opening and a fourth opening allowing the user's nose and mouth to enter the internal cavity of the elastic part. The fabric part, configured to form a sealing area between the lower lip area and the nasal bridge area, featuring a first surface partially connected to the elastic part, a second surface sealing at least a portion of the user's face, and also having an inner edge and an outer edge.

SCUBA diving equipment is composed of a heavy SCUBA pressure vessel, buoyancy compensation device and a heavy weight system. Together with a constricting exposure suit the current setup makes for a rather cumbersome system. Perfect buoyancy is a term used in SCUBA diving to describe the ability of the diver to maintain its vertical position in the water column. Doing so requires a thorough understanding of the governing physics principles as well as considerable practice time. Together, the cumbersome nature of standard SCUBA systems and the physical and mental requirements of operating said systems underwater are a commercial hurdle, preventing many individuals from entering the sport. The present invention provides systems that can significantly simplify both elements by allowing water to occupy some of the pressure vessel internal volume. Such a pressure vessel can be used as both the breathing gas source as well as a buoyancy control device, reducing or even eliminating the need for additional weights and a separate buoyancy compensation device. Embodiments of the present invention also comprise a control system and one or more sensors to provide an automatic buoyancy system.

Disclosed is a respiratory system with the adjustable concentration of a hydrogen-oxygen generator, which is used for changing the concentration of the breathing gas of an assisted person, and comprises: a hydrogen-oxygen supply auxiliary device (13), a pure water electrolysis hydrogen-oxygen manufacturing machine (1, 1'), a wet bottle (3), and a hydrogen concentration detector (14). The pure water electrolysis hydrogen-oxygen manufacturing machine (1, 1') comprises: an ion exchange membrane (10, 10'), wherein the two sides of the ion exchange membrane (10, 10') are respectively coated with an oxidation catalyst layer (100, 100') and a reduction catalyst layer (102, 102'); a pair of an anode metal layer (110, 110') and a cathode metal layer (112, 112') with pores (114); an anode (120, 120') for guiding the anode metal layer (110, 110') and a cathode (122, 122') for guiding the cathode metal layer (112, 112'); and a sealed container body (2, 2') for containing the above-mentioned structure of the pure water electrolysis hydrogen-oxygen manufacturing machine (1, 1'), the sealed container body (2, 2') being provided with a water injection hole (20), a hydrogen hole (22, 22'), and an oxygen hole (24, 24'). The wet bottle (3) comprises: an oxygen transmission pipe (32), a hydrogen transmission pipe (30), a mixing and humid output pipe (34) connected to the hydrogen-oxygen supply auxiliary device (13), and a bottle body (36), wherein one end of the oxygen transmission pipe (32) and one end of the hydrogen transmission pipe (30) are separately inserted into clean water.

The invention discloses a sample acquisition method and device for water area ecological health condition analysis. The sample acquisition method for analyzing the ecological health condition of the water area comprises the steps that a bottom mud layer identifier of a bottom mud layer where a sample acquisition device is located is determined, the sample acquisition device comprises at least one bottom mud acquisition element and at least one gas collection element, and the bottom mud acquisition element is communicated with the gas collection element through a pipeline; according to the bottom mud layer identifier, activating a bottom mud acquisition element corresponding to the enabled sample acquisition device and acquiring a bottom mud sample; environment parameters of the bottom mud acquisition element in the activated state are obtained, the working environment of a target gas collection element is adjusted according to the environment parameters, so that the internal environment and the external environment of the bottom mud acquisition element are matched, and the target gas collection element is a gas collection element in the sample acquisition device; when the breathing gas sample acquisition condition is satisfied, the gas collection element is enabled to collect the breathing gas sample. According to the method, a more accurate bottom mud microorganism respiration sample can be obtained.

A mask system for delivery of respiratory therapy to a patient includes a nares portion and a mouth portion and an inlet conduit connected to at least one of the nares portion and the mouth portion to deliver the pressurized, breathable gas. The mask system is adapted to selectively utilize the nares portion and / or the mouth portion in a first mode utilizing both the nares portion and the mouth portion, and in a second mode utilizing the nares portion and not utilizing the mouth portion.

The invention is applied to the technical field of disease diagnosis, and discloses a respiratory gas analysis-based disease diagnostic apparatus, which comprises a functional box, a first gas inlet joint is fixedly arranged on the outer surface of one side of the lower end of the functional box, and one end of the first gas inlet joint is fixedly connected with one end of a first gas inlet hose; the other end of the first air inlet hose is fixedly connected with an air blowing cylinder, a display screen is fixedly installed on the upper surface of the functional box, a dynamic detection mechanism is arranged in the functional box, and the overall working efficiency of the diagnostic apparatus is improved by collecting and temporarily storing breathing gas. According to the disease diagnostic apparatus based on respiratory gas analysis, the central motor drives the central seat to rotate, the gas storage tanks uniformly distributed on the central seat can sequentially collect and temporarily store respiratory gas, and in the rotating process of the central seat, the gas in the different gas storage tanks can be continuously conveyed to the gas detection module for detection; and the defect that a small amount of gas samples are detected once by traditional equipment is avoided.

Devices and methods for resuscitation of a patient wherein inspiratory gas is delivered through a T piece circuit having an exhalation port and a filter located upstream of the exhalation port to remove microbes from exhaled respiratory gas before the respiratory gas exits through the exhalation port.

The utility model discloses a closed circulating breathing diving outfit capable of underwater communication, which comprises a front chest part and a back part, shoulder straps are arranged between the front chest part and the back part, and a storage assembly is arranged at the outer end of the front chest part and is used for facilitating storage and wearing of the outfit and placement of a communication module; the breathing system is arranged on the outer side of the back, and the breathing system is used for achieving internal circulation operation of breathing and controlling the oxygen content of breathing gas. The utility model belongs to the technical field of diving devices, and particularly relates to a closed type circulating breathing diving device capable of achieving underwater communication.