147 results about "Breathing gas" patented technology

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.

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.

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.

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.

Nasal cannulas for providing respiratory therapy to patients can have a curved prong section that has turbulation elements on the inside curve of the prong. A flow of breathing gas moving through the prong may incur less resistance and create less noise when flowing through such a prong due to the promotion of favorable flow dynamics.

The embodiment of the invention discloses an air bag pressure control device, medical ventilation equipment and a control method of the medical ventilation equipment. In the process that a user uses the medical ventilation equipment to be connected with a trachea cannula to convey breathing gas to the trachea of a patient, an air bag of the trachea cannula is inflated or deflated through a pressure adjusting module of the air bag pressure control device; the pressure of the air bag is further adjusted, the pressure of the air bag is measured through the pressure monitoring module, the pressure adjusting module is controlled through the control module to adjust the air bag at different pressures, the air leakage amount determined by the medical ventilation equipment under different air bag pressures is obtained at the same time, and then analysis is conducted according to the change condition of at least two air leakage amounts. After the target pressure is determined, the pressure adjusting module can be controlled to adjust the pressure of the air bag according to the target pressure, so that the pressure of the air bag can be automatically adjusted to adapt to physiological differences of different patients, and more accurate, real-time and personalized air bag pressure management is realized.

A pump device, a respiratory device and a method for providing a respiratory gas. A specially formed rotor and a corresponding pump chamber are used so that an approximately sinusoidal flow of an out-flowing fluid is possible. With the combination of two pump chambers with rotors driven in a 180° phase-shifted manner to one another, an almost constant flow can be created at a common outlet. In addition, the system is designed to be highly dynamic with simultaneously relatively low energy consumption.

A ventilation device comprising a pressurized gas source connectable to a patient interface and an oxygen inlet valve for enriching respiratory gas with oxygen, characterized in that the inlet valve can be coupled to the housing of the ventilator via at least one coupling element (15, 18, 19) which interacts with a connection element of the ventilator, wherein an oxygen-conducting connection to the ventilator is established via the coupling of the oxygen outlet (15) of the inlet valve with an oxygen inlet (29) of the ventilator, wherein oxygen is introduced from the oxygen inlet (29) via a connecting tube through the device housing into the air passage in the area of ​​the blower box (27) which surrounds the blower of the ventilator.

A nasal respiratory apparatus comprising a compressible nasal dam is removably engaged with an air chamber to provide respiratory gas to a patient. The air chamber has a gas connection port, at least one nasal conduit, a nasal end tidal sample port, wherein the gas connection port is configured to receive an externally supplied gas via a gas supply tube and wherein the at least one nasal conduit in fluid communication with the gas connection port. The nasal dam has a least one nares port corresponding to the at least one nasal conduit of the air chamber, the nares port extending from an upper external surface of the nasal dam to a lower external surface of the nasal dam such that the upper external surface of the nasal dam interfaces with soft tissue of a patients nasal base to provide a substantial seal around the patients nasal base to facilitate respiratory gas supply to the patient.

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.

A near-patient humidification system provides vapor to a respiratory breathing circuit. The system includes an expiratory gas conduit and an inspiratory gas conduit. A patient coupling member is provided for coupling the expiratory and inspiratory gas conduits to a patient interface. A vapor injection unit is located at least partially within the housing of the patient coupling member. The vapor injection unit heats a supply of fluid into vapor and injects the vapor into the inspiratory gas passage of the patient coupling member at a vapor injection location for providing moisture to the inspiratory gas flow. A method of simultaneously and independently controlling the temperature and humidity of inspiratory gas in a respiratory breathing circuit is performed by injecting vapor having a temperature determined as a function of measured temperatures and measured humidities of the breathing gas at different locations along the breathing circuit.

A head-mounted respiratory assistance apparatus configured to provide a respiratory gases stream to a user. The head-mounted respiratory assistance has a main body securable to the head of a user and a blower unit that is operable to generate a pressurised gases stream from a supply of gases from the surrounding atmosphere. A patient interface is provided on the main body that has a gases inlet which is fluidly connected to the blower unit and which is configured to deliver the pressurised gases to the user's nose and / or mouth.

The invention relates to a mixing device (1) for a breathing or anaesthesia machine for mixing at least two breathing gas components, having a flow channel with at least two inlets (2, 3) for introducing the breathing gas components, 3) and a second flow channel section (5) with an outlet (7) for discharging a flow of breathing gas having a breathing gas component. The mixing device (1) is characterized in that the cross-section of the first flow channel section (4) decreases downstream at least in sections in the direction of the transition (6) from the first to the second flow channel section (4, 5), the first and second flow channel sections (4, 5) are inclined to each other, and the first flow channel section (4) opens into the second flow channel section (5) in the region of the transition (6) in such a way that the first flow channel section (4) opens into the second flow channel section (5). In this way, a vortex of the breathing gas flow around the longitudinal central axis (8) is formed at least partially in the second flow channel section (5), said vortex flowing helically in the direction of the outlet (7) at least in sections. The invention further relates to a breathing or anaesthesia machine having such a mixing device (1) and to a method for producing such a mixing device (1).

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.

A respiratory device configured to provide a gas flow to a user for respiratory therapy. The device includes a flow generator configured to generate a gas flow for the user, and one or more sensors configured to generate flow parameter data indicating or representing the gas flow. A controller is configured to receive the flow parameter data, identify an intranasal pressure variability value indicating the user's mean intranasal pressure, based at least partly on the received flow parameter data, identify a work-of-breathing (WOB) indicator based at least partly on the identified intranasal pressure variability value, and initiate one or more actions based at least partly on the identified WOB indicator.

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 system to simulate breathing by a human occupant of an enclosed structure, such as vehicle, for testing, validating and verifying operation of CO2-based human presence detection systems, having a doll with dimensions corresponding to a specific human age, size, or both; a compressible breather bulb having an interior gas volume corresponding to a single breath gas volume corresponding to the specific human; an exhale gas reservoir which is collapsible at ambient atmospheric pressure; valves to control the movement of the exhale gas; wherein the reservoir collapses as gas is exhaled to simulate exchanging of gas during inhales and exhales.

Title “Medical Ventilator Adjustment Aid Device” The invention relates to a device (1) for adjusting a medical ventilator used to deliver breathing gas to a patient, comprising a main body (2) with two opposing surfaces (3, 4), a first series of slots (10) with locations (11) comprising an indication (12) relating to the patient's perception of the ventilation applied, and a second series of slots (20) with locations (21) comprising an indication for adjusting the ventilator (22). Indicator elements (13, 23) are movable relative to the slots (11) such that positioning the first indicator element (13) opposite one of the locations (11) of the first series of slots (10) simultaneously positions the second indicator element (23) opposite one of the locations (21) of the second series (20) of slots (20). Abstract figure: Figure 1

A process controls gas quantities in a dosing and supply of quantities of oxygen for an anesthesia system. In a sequence of steps (101, 102, 103), a verification is carried out to determine whether there is a reason (11) for a reduction in the quantity of oxygen provided in the breathing gas and, depending on the result of the verification, the supply of quantities of oxygen is limited.

A method for controlling gas quantities during the dosing and supply of oxygen to an anesthesia system is described. In a sequence of steps (101, 102, 103) a check is carried out to determine whether there is a reason (11) to reduce the amount of oxygen supplied in the breathing gas and, depending on the result of the check, a limitation of the supply of oxygen is carried out.

Ventilator, consisting of at least: • a breathing gas pump (1), • a connection (2) for a ventilation device, • a connection for external and / or integrated measuring devices (3) for measuring respiratory and / or device measurements, • Storage devices (4) for measurement data, • a data processing device (5) for calculating and / or transmitting control parameters which at least temporarily influence at least one device function; characterized in that the ventilator is designed such that during its operation: • temporarily perform measurements with the measuring instruments (3), the measurement data of which are stored in the storage instruments (4), without the data processing device (5) calculating control parameters from this and without the measurement data stored during this time being able to influence the device control; • temporary measurement data from the measuring means (3) and / or storage data from the storage means (4) are provided by the data processing device (5) as control parameters with or without further calculations, wherein the data processing device (5) performs an analysis of the flow history, and influence at least one device function, wherein a separate control device (6) or a control device integrated into the data processing device (5) is designed to determine whether and when the data processing device (5) provides control parameters and whether and when such control parameters influence at least one device function.

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.

Disclosed is a threaded connector configured to connect a pneumatic system of a breathing apparatus to a threaded connection of a breathing cylinder, the threaded connector comprising: a rotatable threaded element configured to connect to a corresponding thread of the breathing cylinder, the rotatable threaded element being rotatable in a first direction and a second direction, the first direction corresponds to tightening rotation of the threaded element relative to the corresponding thread, and the second direction corresponds to loosening rotation of the threaded element relative to the corresponding thread; a locking device configured to control rotation of the threaded element, the locking device having a first configuration that prevents rotation of the threaded element in the second direction, and having a second configuration that allows rotation of the threaded element in both the first direction and the second direction; and a release mechanism configured to adjust the locking device from the first configuration to the second configuration. A breathing apparatus including the threaded connector is also disclosed.

A breathing apparatus includes a tank containing pressurized breathing gas, a regulator having an inlet connected to the tank, an outlet for providing breathing gas to a user, and a valve configured for controlling a flow of breathing gas between the inlet and the outlet. A facepiece includes a first port for connecting with the outlet of the regulator, a second port adapted to be connected to an air purifying system, and an exhalation valve. A pneumatic pressure adjustment assembly is in operative connection with the exhalation valve, and has a first pneumatic connection in operative connection with a second pneumatic connection in the regulator. The pneumatic pressure adjustment assembly is operable to adjust the internal facepiece pressure for opening the exhalation valve based on whether breathing gas is delivered to the pneumatic pressure adjustment assembly. An alignment mechanism is provided for aligning the regulator with the facepiece.

A patient interface for delivering positive pressure respiratory therapy to a patient is disclosed. The patient interface is configured to communicate respiratory gas with the mouth and with one or both nares of the patient. The patient interface comprises a first chamber and a second chamber. The first and second chamber are in fluid communication to enable a flow of respiratory gas from the first chamber to the second chamber within the patient interface. The patient interface further comprises a respiratory gas inlet in fluid communication with the first chamber and a flow valve in fluid communication with the second chamber. Respiratory gas is exhaustible through the flow valve from the second chamber to external of the patient interface. The flow valve is configured to control a respiratory gas flow rate through the flow valve to be within a preferred range across a range of respiratory therapy pressures.

The invention discloses a method for detecting emission of unknown volatile organic compounds in a respiratory gas passage in medical care application. In the invention, a method for systematically testing unknown volatile organic compounds (VVOC (very volatile organic compounds), VOC (volatile organic compounds) and SVOC (semi-volatile organic compounds)) by adopting a thermal desorption-gas chromatography-mass spectrometer (TD-GC-MS) is established. The method comprises the following steps: collecting 20L of gas by adopting a TENAX adsorption tube at a flow rate of 500mL / min, carrying out TD-GC-MS (Time Division-Gas Chromatography-Mass Spectrometer) analysis, carrying out qualitative analysis on unknown volatile organic compounds in combination with an NIST database and an artificial spectrum unfolding mode, and then carrying out quantification or semi-quantification on the volatile substances by adopting an external standard curve method. The method is suitable for qualitatively and quantitatively analyzing VOS released by a breathing gas channel according to the ISO 18562-3: 2024 standard, and the clinical use safety of medical instruments containing the breathing gas channel such as a breathing machine pipeline, an anesthesia loop and an oxygen mask connecting pipe is guaranteed.

A breathing system of a concentration-adjustable oxyhydrogen generator is used for changing the concentration of gas breathed by an assisted person and comprises an oxyhydrogen supply assist device (13), pure water electrolysis oxyhydrogen manufacturing machines (1 and 1 '), a moist bottle (3) and a hydrogen concentration detector (14). Wherein the pure water electrolysis oxyhydrogen manufacturing machine (1, 1 ') comprises ion exchange membranes (10, 10'), and the two sides of the ion exchange membranes (10, 10 ') are coated with oxidation catalyst layers (100, 100') and reduction catalyst layers (102, 102 ') respectively; a pair of anode metal layers (110, 110 ') and cathode metal layers (112, 112') having pores (114); anodes (120, 120 ') conductively connected to the anode metal layers (110, 110') and cathodes (122, 122 ') conductively connected to the cathode metal layers (112, 112'); the sealed containing body (2, 2 ') of the structure is used for containing the pure water electrolysis hydrogen and oxygen manufacturing machine (1, 1'), and the sealed containing body (2, 2 ') is provided with a water injection hole (20), a hydrogen hole (22, 22') and an oxygen hole (24, 24 '). The moist bottle (3) comprises an oxygen transmission pipe (32), a hydrogen transmission pipe (30), a mixed moist output pipe (34) and a bottle body (36); the mixed moist output pipe (34) is connected to the hydrogen and oxygen supply assistor (13); and one end of the oxygen transmission pipe (32) and one end of the hydrogen transmission pipe (30) are respectively inserted into clean water.

A ventilator comprising a respiratory gas source and control systems, a housing with a receptacle and, lying at the base in a depression, an interface for receiving different data transfer sticks and data storage sticks.

A respiratory mask for supplying a patient with respiratory gas comprises a mask body for applying to mouth and / or nose of the patient, comprising a first and a second coupling receptacle and a tube connector for attachment of a breathing tube; a head harness for fixing the mask body with respect to the patient's face and comprising a first and a second strap for tensioning around the patient's head; a first and a second coupling element for coupling the head harness to the first and second coupling receptacle. Each coupling element comprises a coupling portion for coupling the coupling element to the respective coupling receptacle and a first and second strap receptacle for fastening the first and second strap and is configured in a particular way as set forth in the claims.