107 results about "Supplemental oxygen" patented technology

A combustor method and apparatus is provided. The method utilizes flameless combustion with one or more of three improvements to enhance ignition of the flameless combustor. A catalytic surface can be provided within a combustion chamber to provide flameless combustion at least in the vicinity of the catalytic surface at a temperature that is much lower than the autoignition temperature of fuel in air without the presence of the catalytic surface. Nitrous oxide or supplemental oxygen may also be used as an oxidant either instead of air or with air to reduce ignition temperatures. Further, electrical energy can be passed through the fuel conduit, raising the temperature of the conduit to a temperature above which the fuel will ignite when combined with the oxidant.

A total delivery oxygen concentration system is provided to supply concentrated oxygen to end users having a variety of oxygen capacity requirements. The system includes a first oxygen concentrating device that may be operated either singularly to produce a first flow of concentrated oxygen or in conjunction with a supplemental oxygen concentrating device. When operating in conjunction with the supplemental oxygen concentrating device, the first oxygen concentrating device serves as a source of compressed air for the supplemental oxygen concentrating device and receives a second flow of concentrated oxygen from the supplemental oxygen concentrating device to provide a combined concentrated oxygen flow to the end user.

An electronic system and method for detecting analytes, such as carbon dioxide, is provided, using an improved nanostructure sensor (CO2 sensor). The CO2 sensor may comprise a substrate and a nanostructure, such as a one or more carbon nanotubes disposed over the substrate (e.g., as a network). One or more conductive elements may electrically communicate with the nanostructure. A counter or gate electrode may be positioned adjacent the nanostructure. A functionalization material reactive with carbon dioxide may be included, either disposed in contact with the nanostructure or isolated by a dielectric. The sensor may be connected to a circuit responsive to changes in CO2 concentration in the environment. Embodiments are described of medical sensing systems including one or more CO2 sensors. One embodiment comprises a breath sampling cannula which is connected to a sensor unit. In an alternative, the cannula permits supplemental oxygen to be administered, while recovering and measuring analytes in breath samples. The cannula may connect to a portable processor-display unit for monitoring one or more analytes, such as CO2. Another embodiment includes a cannula configured for the monitoring of sleep disorders, such as apnea, comprising one or more sensors disposed adjacent a breath sampling channel, optionally including flow rate or other sensors. The sensors may be connected by wired or wireless links for to a processor/input/display unit. Any of the embodiments may include filters, selectively permeable membranes, absorbents, and the like to precondition the breath sample, may be configured to include complementary chemistry measurements.

A system and method for determining the volume of oxygen taken up by the lungs of a human or veterinary patient. A closed ventilation circuit is connected to a spirometric device, which contains a quantity of oxygen. As oxygen is taken up by the patient, an equivalent volume of oxygen passes from the spirometric device into the ventilation circuit. The volume of oxygen that moves from the spirometric device may thus be measured as an indication of the volume of oxygen that has been taken up by the patient. In some embodiments, a source of make-up oxygen is connected to the ventilation circuit and the flow of make-up oxygen is adjusted as necessary to maintain a substantially constant volume of oxygen in the spirometric device. The volume of make-up oxygen is measured and serves as an indication of the amount of oxygen taken up by the patient. A valve may be used to close the spirometric device off from the ventilation circuit during all but a part of the ventilation cycle (e.g., all but the late expiratory phase) to prevent substantial pressure or movement excursions within the spirometric device

The present invention is an oro-fiberscopic biteblock. The biteblock is utilized during oral fiberscopic procedures. The biteblock includes a main structure having an orifice sized to accommodate entry of a fiberscope, such as an endoscope, through the orifice. The biteblock includes an extension extending inward from the main structure when positioned within the mouth of a patient. On each side of the orifice is a loop for handling and positioning the biteblock within the patient's mouth. The biteblock includes an exhalation tube running from the extension to a monitoring device which allows monitoring of the patient's expelled gases. In addition, an inhalation tube may be used to provide supplemental oxygen to the patient. The biteblock is positioned in the mouth of the patient with the mouth of the patient surrounding the extension. The tubes include openings which are located on the extension and lie in the interior of the mouth to provide monitoring of uncontaminated gasses expelled by the patient.

A face mask including a gas monitoring capability for improved patient management in combination with improved efficiency of supplemental oxygen delivery to the patient is provided. The face mask of the present invention is configured to direct substantially all of the inspiratory and expiratory gas streams to and from the patient through a gas measuring device and to efficiently deliver supplemental oxygen. As such, the face mask permits measurement of both oral and nasal gas exchange.

A fluid delivery system provides fluid, such as supplementary oxygen, to a patient in response to inhalation. The fluid delivery system includes a valve assembly that is triggered by sensing nasal flow. The system includes a sensor configured to detect flow either directly through the nose and to detect any “flow leakage” through a patient's nasal cavity while mouth breathing. A method for conserved delivery of fluid to a patient that includes sensing such nasal flow is also provided.

An oral/nasal cannula manifold gas sampling and oxygen delivering manifold for sampling exhaled breath of a subject and delivering supplemental oxygen, the cannula including a main body portion having a suction port which is connected with a collection tube to a suction device for sampling the exhaled breath of the subject. A nasal prong upwardly protrudes from the main body portion and is positioned for insertion into a nostril of the subject to collect nasally exhaled breath. An oral conduit passage is embedded in a deflector/concentrator plate that extends downwardly from the main body portion. The straight conduit passages of the nasal and oral passages are connected to and aligned in the same plane whereby the opposed nasal and oral conduit passages are connected with the conduit passage of the suction port without any adjacent connected void volumes or dead spaces in any of the passages.

The present invention is a safe, inexpensive, easy to use and effective anti-snoring and anti-sleep apnea treatment device. The device has a vertical and horizontal bar. The horizontal bar is placed inside the mouth, behind or between the molar teeth with palatine and tongue shelves to prevent snoring and movement of the tongue backwards. The device is tethered to the hard palate by vacuum cups to prevent the movement of the tongue backwards during sleep to prevent sleep apnea. The proximal end of the vertical bar is anchored to string at the distal end with hook and loop fabric closure adhesive attachment and to the lips outside the mouth to prevent the accidental swallowing and aspiration of the device; and at the same time holds the tongue and device firmly in the mouth. The device is provided with canula with three way stopcocks to deliver supplemental oxygen and therapeutic agents.

A device for monitoring and recording the usage of gas supply apparatus. The device includes erasable memory for storing the usage data and a connection for periodically downloading the data to a personal computer.

The invention relates to a reactor comprising two reaction zones and processes for the production of alkenes from alkanes. A first reaction zone includes a combustion catalyst, and a second reaction zone comprises a heating zone in thermal contact with the first reaction zone. One process comprises generating heat and an effluent by the combustion of a fuel with oxygen in the first reaction zone; passing an alkane feed through the heating zone of the second reaction zone such that the alkane feed absorbs a sufficient amount of the heat generated in the first reaction zone to initiate the conversion of alkanes to alkenes in the second reaction zone. In other embodiments, the effluent comprises oxygen, and the second reaction zone excludes a catalyst; alternatively, the effluent is substantially free of oxygen, and the second reaction zone comprises a supplemental oxygen feed and may or may not include a catalyst.

The invention is an oxygen system, including a home care system, for patients who require supplemental oxygen. Built around an intelligent portable oxygen concentrator, the system incorporates a variety of patient monitoring and reporting function enabled by the processing and communications channels built into the concentrator.

The invention relates to a method for realizing the increase production of butadiene, which mainly solves the problem that the yield of the butadiene is not high because the conversion rates of 1-butene, cis-2-butene and reverse 2-butene as three isomers in the n-butene are different under the condition of utilizing the same catalyst in the prior art. According to the method, two segments of adiabatic and isothermal fixed bed reactors connected in series are adopted; butene, oxygen-containing gas and water vapor as raw materials enter the first segment of the reactor A filled with a catalyst I according to definite proportion; and after a heat exchange treatment is carried out on the gas at an outlet of the first segment of the reactor A, the gas is mixed with the supplemental oxygen-containing gas, and then mixed gas enters the second segment of the reactor B filled with a catalyst II according to definite proportion. Therefore, based on the technical scheme that the the catalyst I has high conversion rate for the 1-butene and the cis-2-butene and the catalyst II has high conversion rate for the reverse 2-butene, the problem is solved well. As a result, the method provided by the invention can be used for the industrial production of the butadiene by the oxidative dehydrogenation of the n-butene.

A swimming snorkel and oxygen supplement apparatus that includes a mask and a headband strap to which is mounted a snorkel device, including a snorkel tube and a mouthpiece for inspiration of atmospheric air therethrough, and an oxygen supply system for communicating supplemental oxygen to the snorkel device.