128 results about "Inhaled Gas" patented technology

An indirect calorimeter for measuring the metabolic rate of a subject includes a disposable portion and a reusable portion. The disposable portion includes a respiratory connector configured to be supported in contact with the subject so as to pass inhaled and exhaled gases as the subject breathes. The disposable portion also includes a flow pathway operable to receive and pass inhaled and exhaled gases, having a first end in fluid communication with the respiratory connector and a second end in fluid communication with a source and sink for respiratory gases. The disposable portion is disposed within the reusable portion, which includes a flow meter, a component gas concentration sensor, and a computation unit. The flow meter generates a signal as a function of the instantaneous flow volume of respiratory gases passing through the flow pathway and the component gas concentration sensor generates a signal as a function of the instantaneous fraction of a predetermined component gas in the exhaled gases. The computation unit receives the electrical signals from the flow meter and the concentration sensor and calculates at least one respiratory parameter for the subject as the subject breathes through the calorimeter.

Disclosed is an apparatus and method for the delivery of inspired gas, e.g., supplemental O2, to a person combined with gas sampling, including for the purpose of monitoring of the ventilation of the person. In the invention, the delivery of inspired gas and gas sampling are accomplished without the use of a sealed face mask. The apparatus of one embodiment of the present invention comprises an oxygen delivery device, nasal airway pressure sampling devices, optionally an oral airway pressure sampling device and at least one pressure analyzer connected to the sampling devices which determine the phase of the person's respiration cycle and the person's primary airway. The oxygen delivery device is connected to a controller such that it delivers a higher flow of oxygen to the person during the inhalation phase of the person's respiratory cycle. The invention thus increases end tidal oxygen concentrations. The invention further comprises carbon dioxide sampling tubes that continuously sample gas from two nasal sites and the mouth. The nasal sampling tubes are connected to a switching valve that is in turn connected to a capnometer which determines carbon dioxide concentration during exhalation. The oral gas sampling site is connected to a second capnometer.

An apparatus to measure cardiac output (Q) and other parameters such as alveolar ventilation (VA), minute CO2 elimination from the lung (VCO2 ), minute oxygen consumption (VO2), oxygenated mixed venous partial pressure of CO2, (PvCO2-oxy), true mixed venous partial pressure of CO2(PvCO2), PaCO2, mixed venous oxygen saturation (SvO2), pulmonary shunt, and anatomical dead space, consisting of: a) a breathing circuit with characteristics that: i. on exhalation, exhaled gas is kept substantially separate from inhaled gas; ii. oninhalation, when VE is greater than FGS flow, the subject inhales FGS first and then inhales a gas that is substantially SGS, for the balance of inhalation; b) gas sensor means for monitoring gas concentrations at the patient-circuit interface c) a first gas set (FGS), and a second gas set (SGS), said second gas set which may comprise previously exhaled gases or exogenous gases or both d) a gas flow control means for controlling the rate of FGS flow into the breathing circuit e) means to identify phase of breathing, said means may consist of pressure sensors or analysis of signal generated by gas sensors or other means known to those skilled in the art; f) machine intelligence consisting of a computer or logic circuit capable of controlling the gas flow control means, receiving the output of the gas sensor means and means to identify phased of breathing, and performing the calculations for measuring cardiac output and other parameters as outlined in the disclosure.

A method of distributing particles in a flow of gas and a needleless syringe for use in the needleless injection of particles into the skin or mucosa of a vertebrate subject are disclosed. The syringe includes a convergence which reduces pressure of the gas flowing in the gas flow path due to the Venturi effect such that particles initially located outside of the gas flow path are drawn into the gas flow path under the action of the reduced pressure and become entrained in the gas. An exit nozzle accelerates the particles so entrained. In another aspect of the invention, there is provided a method of creating a gas flow in a needleless syringe which comprises flowing gas through a first convergence into a chamber to form a transsonic gas jet in the chamber and passing the gas jet from the chamber into a second convergence and along the nozzle.

An apparatus and method to characterize NO gas exchange dynamics in human lungs comprising the steps of: (1) performing a series of breath hold maneuvers of progressively increasingly breath hold times, each breath hold maneuver comprising a) inhaling a gas, b) holding a breath for a selected time duration, and c) exhaling at a flow rate which is uncontrolled but which is effective to ensure evacuation of the airway space and (2) measuring airway NO parameters during consecutive breath hold maneuvers. As a result disease states of the lungs are diagnosed using the measured airway NO parameters.

A pressurized gas supply system includes a pressurized container which expands and contracts. The container includes a one-piece liner molded from a polymer which is reinforced by a high tensile fiber such as KEVLAR®. A valve is molded into the liner, and a regulator is connected to the valve. A hose, having a conserver positioned therealong, extends between the regulator and a fitting allowing a user to inhale gas from the container. The container is carried in a carrying bag, which can be in the form of a carrying case, a purse, or a back-pack.

The invention provides a multifunctional cigarette cracking capsule based on a liquid marble and a preparation method of the multifunctional cigarette cracking capsule, and belongs to the fields of colloid and interface science and micro-nano encapsulating. The multifunctional cigarette cracking capsule has a structure as shown below. The preparation method of the multifunctional cigarette cracking capsule comprises the following steps: I. dropwise adding liquid drops above a stabilizing agent which is hydrophobic powder, and preparing the liquid marble by virtue of a rolling dropping method; and II. immersing the liquid marble in a photo-curable coating which contains an initiating agent or spraying the photo-curable coating containing the initiating agent outside the liquid marble, and curing through ultraviolet radiation, so that a microcapsule is obtained. The multifunctional cigarette cracking capsule based on the liquid marble disclosed by the invention is simple and mild in preparation process, and is excellent in stability, water retention and moisture preserving properties, and disinfecting property; harmful ingredients in inhaled gas of a cigarette can be removed and cigarette taste can be enhanced; therefore, the multifunctional cigarette cracking capsule has broad application prospect.

The invention concerns a device (1) for the inhalation of at least one drug from a gas canister (98) having a nozzle (96) by a person suffering from asthma or bronchospasm, said device comprising a gas container (10) having at least one wall (12), said wall surrounding a gas containment chamber (14) adapted to contain gas at a pressure larger than atmospheric pressure, said gas container (10) further having an inlet (16) adapted for connection to the nozzle (96) of the gas canister (98), said gas container (10) further having an outlet (18) with an outlet valve (20) adapted to allow the person to inhale gas from said device through said outlet; wherein said outlet valve (20) is adapted to be activated by the inhalation of the person independent of the activation of the gas canister (98). This invention allows the person to activate the gas canister, and pause before inhalation. The invention is adapted to facilitate coordination for the patient inhaling.

A wearable liquid supplying device for insulin injection is fixed on a user's body through a ring belt and includes a carrier body, a flow-guiding-and-actuating unit, a sensor, an air bag, a miniature air pump and a driving chip. The sensor measures sweat on human skin to detect a level of the blood glucose. The driving chip receives the glucose monitoring data and accordingly controls the actuation of the flow-guiding-and-actuating unit and the open / closed states of the switching valves. The miniature air pump is enabled to inhale gas into the air bag, so that the air bag is inflated and the ring belt contacts the human skin tightly. The flow-guiding-and-actuating unit is enabled to generate a pressure difference so that the insulin liquid is transported to a liquid guiding outlet through a liquid guiding channel and flows into the microneedle patch for being injected into the subcutaneous tissue.

A respiration appliance (10), system (40), and method (62, 72, 86) for supporting the airway of a subject (12) as the subject (12) breaths. The flow of gas from the lungs of the subject (12) during exhalation is leveraged to provide support to the airway. In particular, a body (14) that encloses one or more external orifices of the subject (12) provides a resistance differential between inhaled gas flows and exhaled gas flows that supports the subject's airway.

An respirator comprises an inhale gas circuit, wherein a positive pressure source which is provided the positive pressure for patient is arranged on the inhale gas circuit; an expiration-and-cough gas circuit, wherein a negative pressure source which is provided the negative pressure for patient is arranged on the expiration-and-cough gas circuit and concatenated with a fast-gate valve between the negative pressure source and the patient, a suction port is connected with an air vent when the negative pressure source is not work. The respirator further comprises a central processing unit; each module is conducted cooperative control by detected data detected from a sensor module and the sensor in other module; an inhale control module, wherein the positive pressure is controlled and provided with the patient; a negative pressure control module, wherein the negative pressure is controlled and provided with the patient; an expiration-and-cough control module, wherein the fast-gate valve is controlled; the sensor module, wherein the inhale and PEEP pressure sensor are concatenated between the positive pressure and the patient; the expiration-and-cough pressure sensor is concatenated between the negative pressure and the patient. The respirator has the advantages by higher accuracy, responsiveness and safety.

An apparatus and method for humidification of inspired gases, wherein the present invention utilizes moisture from condensed expiratory gases deposited within the outer expiratory tube of a conventional unilimb breathing circuit to humidify oxygen gas (or any other inspiratory gas) for subsequent patient inhalation, and wherein the oxygen gas may be directed through the outer expiratory tube via a flow distributor coupled to an oxygen gas source. The present invention preferably functions to effectively eliminate prior art methods of oxygen gas humidification that depend upon the wasteful utilization of bottles of sterile water, corrugated tubing, nebulizer adapters and excess consumption of oxygen gas; thus, effectuating a cost savings for the patient and contributing to overall environmental conservation efforts.

An anesthetic gas intermediate storage unit is provided having a first gas duct for passing through inspiration gas, a second gas duct for passing through expiration gas and an adsorption material (2), which can be influenced electrically, for an anesthetic, which is carried by a gas. The adsorption material is arranged in at least one gas duct for passing through breathing gas, and with a device for admitting expiration gas and inspiration gas alternatingly to the adsorption material (2), at least at an identical area for the intermediate storage of the anesthetic from the expiration gas to the inspiration gas. The device has openings, which divert the expiration gas and inspiration gas flowing in and out such that expiration gas and inspiration gas are admitted to the stationary adsorption material (2) alternatingly at an identical area.

The present disclosure relates to methods and devices for simultaneously delivering to a patient an inhalational gas comprising up to 100 fractional percent inspired oxygen and at least one nebulized medicine.

A humidifying mask includes an inner shell, an outer shell and a humidifying component positioned in a clearance between the inner shell and the outer shell. The humidifying mask adopts bionic noiseless unobstructed surface humidification, and can efficiently filter the air; when the nasal cavity is required to be protected, the humidifying mask can be converted to oral breath; and meanwhile, the humidifying mask can fully utilize heat energy in exhaled air to warm inhaled air.

The invention relates to a respiratory gas supply circuit for an aircraft carrying passengers and / or crewmembers (1) in a cabin, comprising a source of breathable gas (R1 , R2), at least one supply line (20) connected to said source, a first actuating device (60, 12) provided on said supply line to open at least partially or close the supply of breathable gas, a respiratory device (50) adapted to be worn on one passenger or crewmember's face, said respiratory device being connected to said supply line, and further comprising an ambient air inlet (40), said respiratory device providing to said one passenger or crewmember a respiratory gas to be inhaled corresponding to ambient air and / or breathable gas, wherein said ambient air inlet further comprises a second actuating device (4, 11) to open at least partially or close said ambient air inlet; and, both said first and second actuating devices are operated so that at least one of said first and second actuating devices is closed at each instant of time.

A delivery system utilizing a diffusion membrane that regulates the concentration of medical gases that are administered to a patient. A storage vessel contains a neat or pure medical gas under pressure that is in fluid communication with a diffusion membrane. The medical gas is then dispensed at a specified rate by diffusion across a membrane into a carrier gas. The concentration is kept constant by regulating the pressure and carrier gas flow. Typical applications are for inhaled gases that are used in patient treatment and care.

An apparatus for reversing inhaled anesthesia, which is configured to be positioned along a breathing circuit or anesthesia delivery circuit, includes a filter for removing one or more anesthetic agents from gases passing therethrough, as well as a component for elevating CO2 levels in gases that are to be inhaled by an individual. The apparatus is configured to be positioned between a Y-connector of the breathing circuit and the portion of the breathing circuit that interfaces with the individual. The CO2 level-elevating component facilitates an increase in the ventilation of the individual without resulting in a significant decrease in the individual's PaCO2 level and, thus, a decrease in the rate at which blood flows through the individual's brain. A method of reversing the effects of inhaled anesthesia includes increasing the rate of ventilation of an anesthetized individual while causing the individual to inhale gases with elevated amounts of CO2 and while filtering anesthetic agents from such gases.

An apparatus and method for controlling the end tidal partial pressure of a gas X in a subject's lung, and to the use of such an apparatus and method for research, diagnostic and therapeutic purposes, wherein the method consists of: obtaining input of a series of logistically attainable PetX values for a series of respective breaths: determining an amount of gas X required to be inspired by the subject in an inspired gas to target the PetX for each of said respective breaths: and controlling a gas delivery device to deliver the amount of gas in a volume of gas delivered to the subject in each of said respective breaths to target the respective PetX for that breath.

A health care gaming device includes: a case, which can be placed on a platform or be handheld by an user; at least one communicating tube provided in the case; an inflow / outflow unit connected to the communicating tube, for the user to exhale and inhale gas; at least one sensor connected to the communicating tube, for sensing gas inflow and outflow and detecting gas flow; a processing unit connected to the sensor, for measuring pulmonary function and executing games; a display unit connected to the processing unit; and a keying unit connected to the processing unit, wherein the sensor generates a sensed deformation due to gas flowing in the communicating tube; the processing unit analyzes the sensed deformation and converts the analytical result to measurement data for pulmonary function or uses the analytical result as game data for proceeding games; and the display unit displays the measurement data and game pictures. The invention also discloses a method using such health care gaming device.

The invention discloses a split type mask capable of improving air quality. The split type mask comprises a mask body, a one-way air outlet valve assembly and an air inlet assisting device, wherein a silica gel face mask is arranged on the inner side of the mask body, an accommodating cavity is formed in the front part of the cover body, a first connecting structure is arranged in the accommodating cavity, and an air channel is formed in the bottom of the accommodating cavity; the one-way air outlet valve assembly is mounted at a side part of the cover body and comprises a base, a one-way valve plate and an air cover; the air inlet assisting device comprises a casing, an isolating cover mounted in the casing, an electronic assembly, a fan, a face mask and an air inlet cap, the casing is mounted in the accommodating cavity, and a second connecting structure is arranged on the casing and in detachable fit with the first connecting structure. Therefore, the quality of inhaled air can be improved and secondary pollution can be avoided by means of the one-way air outlet valve assembly and the air inlet assisting device arranged on the mask body; meanwhile, the influence of heating of electronic components on the inhaled air can be reduced effectively; besides, the air inlet assisting device can be detached and replaced, and the application range of the air inlet assisting device is enlarged.

An exhaust gas denitrification device for an engine, which is provided with a NOx absorbing catalyst (9) for absorbing and releasing NOx, an exhaust gas recirculation flow path for mixing exhaust gas into inhaled gas, and an exhaust gas recirculation amount control mechanism ( 20, 20f); the exhaust gas recirculation amount control mechanism, when the stored amount of the absorbed NOx amount is below a specified value, recirculates the specified amount of reduced NOx with exhaust gas, and when the stored amount of the absorbed NOx amount When the amount exceeds a predetermined value and NOx is released, the exhaust gas exceeding the predetermined amount is recirculated to make the air-fuel ratio rich. The exhaust gas denitrification device of the engine can make the NOx absorbing catalyst miniaturized without reducing the reliability of the engine.

An anesthetic gas intermediate storage unit is provided having a first gas duct for passing through inspiration gas, a second gas duct for passing through expiration gas and an adsorption material (2), which can be influenced electrically, for an anesthetic, which is carried by a gas. The adsorption material is arranged in at least one gas duct for passing through breathing gas, and with a device for admitting expiration gas and inspiration gas alternatingly to the adsorption material (2), at least at an identical area for the intermediate storage of the anesthetic from the expiration gas to the inspiration gas. The device has openings, which divert the expiration gas and inspiration gas flowing in and out such that expiration gas and inspiration gas are admitted to the stationary adsorption material (2) alternatingly at an identical area.

An apparatus for discharging fluid for a subject breathing. The apparatus includes a fluid cavity for conveying a fluid to be discharged; a valve for guiding the flow of fluid through the fluid cavity; a control unit for controlling the valve for guiding the flow of fluid; a first housing having a wall and a hole on this wall for fluid flowing through the fluid cavity; a first member apart from the first housing having holes discharging fluid through them for the subject breathing; a chamber between the first member and the first housing for receiving the fluid coming along the fluid cavity; a vibrator making the first member to vibrate and discharge fluid through the holes to a subject breathing tube. The vibrator is in contact with the first member through a transmitter extending towards the chamber and which transmitter transmits the vibration effect from the vibrator to the first member.

A respiration appliance (10), a system (40), and a method (62, 72, 86) for supporting the airway of a subject (12) as the subject (12) breaths are diclosed. The flow of gas from the lungs of the subject during exhalation is leveraged to provide support to the airway. In particular, a body (14) that encloses one or more external orifices of the subject (12) provides a resistance differential between inhaled gas flows and exhaled gas flows that supports the subject's airway.