298 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.

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.

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 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 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.

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.

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.

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 patient interface includes a sealing arrangement adapted to provide an effective seal with the patient's nose, an inlet conduit arrangement adapted to deliver breathable gas to the sealing arrangement, and a cover that substantially encloses the sealing arrangement and / or the inlet conduit arrangement.

A moisture removal apparatus for a breathing circuit may include a breathing gas conduit configured to receive a flow of breathing gas having a first humidity level. The apparatus may include a dry gas conduit adjacent to at least a portion of the breathing gas conduit, the dry gas conduit configured to receive a flow of dry gas having a second humidity level lower than the first humidity level. The apparatus may also include a feeding conduit extending through at least a portion of the dry gas conduit, the feeding conduit configured to introduce the dry gas into the dry gas conduit. The apparatus may further include a moisture transmission pathway configured to enable transfer of moisture from the breathing gas to the dry gas based on the humidity differential.

A demand regulator for a breathing apparatus may include a primary lever arm can include a cam element having a first profile and a second profile, the primary lever arm being pivotable; and a valve configured to regulate a flow of breathing gas through the demand regulator. The valve may include a valve member being displaceable so as to regulate the flow of breathing gas. The cam element of the primary lever arm is configured to displace the valve member during pivoting of the primary lever arm. Pivoting of the primary lever arm through a first arc displaces the valve member at a first displacement rate; and pivoting of the primary lever arm through a second arc displaces the valve member at a second displacement rate. A breathing apparatus can include a demand regulator and a diaphragm-actuated lever arm. A method for designing a cam element profile is disclosed.

The present invention relates to a breathing gas circulation system to be connected to a water chamber of a respiratory assist device to guide a heated / humidified breathing gas to a patient, wherein a circuit unit comprises: an intake tube, one lengthwise end of which connects to a water chamber so as to communicate therewith, and which delivers a heated / humidified breathing gas to the patient; a branch unit which connects to the other lengthwise end of the intake tube so as to communicate therewith, and which connects to a breathing mask worn on the patient, so as to communicate therewith; and a discharge tube, one lengthwise end of which connects to the branch unit so as to communicate therewith, and the other lengthwise end of which connects to an artificial respirator to guide thereto the gas generated subsequent to the breathing of the patient.

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.

Ventilator (1) with at least a sensor for detecting at least one parameter of a breathing gas, a control device for specifying settings, a storage unit a control unit connected to the storage unit, a first computer program product for implementing the settings taking into account a specification and a second computer program product that regulates data transfer to and from the control unit via at least one interface (8); wherein the ventilator (1) is designed such that at least one interface allows for the mutual exchange of data between the ventilator (1) and external storage media and / or devices (12), the exchange of parameters, and the loading of parameters and / or a configuration of the ventilator from external storage media and / or devices, wherein the ventilator has at least two interfaces that support different standards and communication protocols, wherein one of the interfaces is designed as a radio interface and another of the interfaces is designed as a memory card interface, wherein the memory card interface is suitable for a Secure Digital card, a Multimedia card, a Memory Stick PRO card, an xD-Picture card, a SmartMedia card or a CompactFlash card, where data from the ventilator can be saved to an inserted memory card via the memory card interface, and data from an inserted memory card can be loaded into the ventilator, where, in the area of ​​the ventilator, a firmware or software is installed as the second computer program product, which runs as a client and enables a connection of the ventilator to the Internet, where the client is responsible for initiating contact during data transmission and is configured to determine the timing of the transmission, where reading or saving ventilation and usage information to the respective storage medium must be initiated by an event, and the event is the expiration of a specific period of time since the start or end of ventilation therapy, where, when reading usage data from the ventilator, an assignment to the correct patients is automatically performed via a stored database. wherein the ventilator contains relevant information about its setting parameters and their setting limits as well as its stored therapy information and is designed to make the relevant information available to a PC, wherein the ventilator is configured to provide, via the respective interface or storage medium, an application directly executable by a PC operating system, wherein the ventilator contains executable logic in non-volatile memory, wherein the executable logic is not executable by the ventilator itself but by the PC, thus enabling the installation of software on the PC without requiring a user to obtain the software directly from the ventilator manufacturer or a service provider via CD, download, or storage medium. wherein the ventilator further comprises a data cable as a data exchange means inserted into the respective interface, wherein the data cable is connected to an interface converter outside the ventilator, wherein the interface converter is designed to enable communication between the ventilator and another device via at least one transmission standard not provided in the ventilator itself, wherein at least one additional sensor in the form of a pulse oximeter and / or a sensor for CO2 measurement and / or a sensor for measuring respiratory effort and / or an ECG device and / or an EEG device is additionally connected to the ventilator via the interface converter.

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.

The utility model relates to the technical field of heart failure rehabilitation training, in particular to a heart failure rehabilitation training device which comprises a base, an air blowing mechanism is connected to one side of the base, a training mechanism is detachably arranged at the upper end of the base, an air flow channel is formed in the middle of the interior of the base, and the heart failure rehabilitation training device further comprises a connecting mechanism arranged on the base. The training mechanism is detachably connected with the base through the connecting mechanism; the positioning mechanism is arranged at the upper end of the base, the training mechanism and the base are connected through the positioning mechanism and then are positioned, according to the heart failure rehabilitation training device, different numbers of inflators can be selected for breathing gas training according to the requirements of patients, and therefore the heart failure rehabilitation training device is suitable for the patients with different requirements.

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).

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.

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.