722 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 relates to the technical field of respiratory monitoring, in particular to a respiratory signal monitoring method, device and system for a patient. The method comprises the following steps: analyzing distribution characteristics of extreme points on a respiration signal curve to obtain an initial respiration anomaly factor between adjacent extreme points; according to the time change characteristics between different adjacent extreme points and the change trend of the data points between adjacent moments, the noise influence degree between the adjacent extreme points is obtained, and a corrected breathing anomaly factor between the adjacent extreme points is obtained; obtaining a trend characteristic factor of each similar extreme point according to a change trend between adjacent similar extreme points and the corresponding breathing anomaly fluctuation factor; the data credibility between the adjacent extreme points is obtained; and filtering the breathing gas volume to obtain a filtered breathing gas volume, and obtaining a filtered breathing curve. Noise interference is considered, and the accuracy of respiration monitoring is improved by obtaining relatively accurate respiration signal data of the patient.

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 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 present invention relates to a monitoring system (100) with a gas measuring device (72) and a method for operating a monitoring system (100). The monitoring system (100) serves to monitor the breathing gas supply of an aircraft pilot in an aircraft. The main components of the breathing gas (10) are air (5), i.e., essentially defined amounts of oxygen, carbon dioxide, nitrogen, and moisture or water vapor. To assess whether a breathing gas mixture meets certain requirements for an aircraft pilot, information about the precise percentage proportions of oxygen and carbon dioxide in the breathing gas mixture is essential. The monitoring system (100) with the gas measuring device (72) offers possibilities for obtaining estimates (44) with regard to possible contamination by other components in the breathing gas supply of an aircraft pilot.

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 CO2 and other gas compensation device includes a device body containing a respiratory gas CO2 compensation device. Inside the respiratory gas CO2 compensation device, an airway is set up. An output end of the airway is connected to a respiratory parameter detection module, which is connected to the respiratory terminal. Inside the respiratory terminal, a proximal pressure sensor and an end-tidal CO2 sensor are installed. The proximal pressure sensor and the end-tidal CO2 sensor are electrically connected to the respiratory gas CO2 compensation device. CO2 is compensated into the respiratory terminal through the respiratory gas CO2 compensation device. The respiratory parameter detection module can monitor parameters of incoming CO2. The respiratory gas CO2 compensation device, in coordination with the respiratory parameter detection module, achieves precise monitoring and adjustment of the incoming CO2, thereby accurately controlling the amount of CO2 compensation required by the patient and improving the treatment effect.

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 of a respiratory therapy system is provided, and includes a mask body; a mask seal secured to the mask body and configured to form a seal with the user's face, at least around the user's mouth; the mask body and mask seal being arranged to define an interior breathing chamber of the patient interface; and an inlet to the breathing chamber configured to receive a flow of breathable gases into the breathing chamber. To assist in allowing a user to speak clearly whilst wearing / using the patient interface, a user actuatable speech valve is provided on the patient interface and is operable to selectively occlude and open a speech flow path from the breathing chamber to atmosphere when the user wishes to speak.

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.

Disclosed is an apparatus for delivery of pressurised air or breathable gas to a patient. The apparatus may comprise a flow generator configured to generate a flow of air. A patient interface may be constructed and arranged to form a seal with a region of the patient's face surrounding an entrance to the patient's airways. The patient interface may be configured to deliver the pressurised air or breathable gas to the patient's airways for respiratory therapy. An air delivery tube may be coupled between the flow generator and the patient interface to deliver the flow of air from the flow generator to the patient interface as the pressurised air or breathable gas. A complementary flow device may be configured to divert at least part of the pressurised air or breathable gas away from the patient's airway.

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.

Provided herein are devices, systems, and methods for introducing a nebulized medication into breathing gas for respiratory therapy. An apparatus includes a reservoir to contain a volume of medication, a vibrating mesh disposed at a reservoir outlet of the reservoir to receive a flow of the medication from the reservoir and output a flow of nebulized medication, a mixing chamber having a gas inlet to receive a flow of breathing gas from a gas source, and a nebulizer inlet to receive the flow of nebulized medication from the vibrating mesh, where the vibrating mesh is disposed between the nebulizer inlet and the reservoir outlet. The apparatus can include a pressure tap tube or other implement in fluid communication with the mixing chamber and the reservoir to selectively equalize pressure between the mixing chamber and a headspace in the reservoir above the volume of medication.

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.

To provide medical devices used in the screening, diagnosis, monitoring, amelioration, treatment or prevention of respiratory disorders improved in one or more of comfort, cost, efficacy, ease of use, and manufacturability.SOLUTION: An apparatus for treatment of a respiratory condition comprises: a pressure generator configured to generate a flow of breathable gas; an intermediate component pneumatically connected to an air delivery tube, the intermediate component comprising a port configured to facilitate propagation of sound outside of the intermediate component; a sensor attached externally to the intermediate component and located adjacently to the port of the intermediate component, the sensor configured to sense sound propagated through the air delivery tube; and a controller. The controller can be configured to: receive a sound signal generated by the sensor as a result of sensing sound during operation of the apparatus; analyze the received sound signal; and effect a response based at least in part on the analysis.SELECTED DRAWING: Figure 13

In some embodiments there is provided a headgear assembly for a full-face under-nose respiratory mask comprising a strap assembly including a rear panel, a crown strap, a pair of opposing upper side straps, and a pair of opposing lower side straps. The assembly further comprises a flexible headgear connector element, wherein a free end of each of the upper straps is coupled to the headgear connector element, and wherein the headgear connector element is configured to extend laterally across and be removably fastened to a frame of the respiratory mask below a tip of a user's nose.There is also provided a respiratory mask assembly comprising a mask frame and a cushion module, the mask frame comprising a breathing gas inlet configured to receive a supply of breathable gas and to deliver the breathable gas to the cushion module, the cushion module being configured to form a seal with a user's face. The mask assembly can further comprise a bias vent in communication with the cushion module, and configured to allow air to be exhausted from the cushion module through the bias vent. the bias vent can be provided with a diffuser comprising diffuser material configured to extend over the bias vent, the diffuser material providing a tortuous air path from the bias vent through the diffuser. Embodiments are disclosed in which the bias vent and / or diffuser are provided on various components of the assembly.

The invention relates to a ventilator having at least one sound-attenuating device, wherein: the ventilator comprises a housing having at least one device input, at least one device output and at least one duct to conduct respiratory gas; the duct is formed between the device input and the device output; at least one respiratory-gas source is located in or on the duct for generating a respiratory-gas flow, and therefore the duct has at least one suction side having a suction channel, and has at least one discharge side having an outlet channel; the respiratory-gas flow is guided in the suction channel from the device input to the respiratory-gas source, and sound waves run in a direction of sound from the respiratory-gas source towards the device input and therefore counter to the flow direction; and the respiratory-gas flow flows in the outlet channel from the respiratory-gas source to the device output, and sound waves run in a direction of sound from the respiratory-gas source towards the device output and therefore in the flow direction, characterized in that the sound-attenuating device is located on the suction side in or on the suction channel and / or on the discharge side in or on the outlet channel, wherein the sound-attenuating device is designed and configured to attenuate sound waves which run in the flow direction and / or counter to the flow direction of the respiratory gas.

A respiratory treatment apparatus configured to provide a flow of breathable gas to a patient, including a breathable air outlet, an outside air inlet, and an pneumatic block module, wherein the pneumatic block module includes: a volute assembly including an inlet air passage, a mount for a blower and an outlet air passage; the blower being mounted in the mount such that an impeller of the blower is in a flow passage connecting the inlet air passage and the outlet air passage; a casing enclosing the volute assembly, wherein air passages within the casing connect air ports on the volute assembly, wherein the inlet air passage of the volute assembly is in fluid communication with the outside air inlet and the outlet air passage of the volute assembly is in fluid communication with the air outlet.

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.