A system and method for conserving oxygen and other gases supplied to a recipient. A supply conduit supplies gas from a source to a reservoir of lightweight, flexible film retaining a volume of gas at ambient pressure. A conduit supplies gas from the reservoir to the recipient. An inflation detection system, which may include plural distance sensors, detects when the reservoir is below a state of minimum inflation and when the reservoir is inflated to a maximum state of inflation. A valve system prevents gas from flowing from the source and into the reservoir when the reservoir reaches the predetermined maximum state of inflation, and the valve system permits gas to flow from the source into the reservoir when the reservoir reaches the predetermined minimum state of inflation whereby gas within the reservoir can be continually replenished without pressurization above ambient pressure.
A breathing gas supply system, potentially for combat aircraft, operative to decrease hypoxia and asynchronous breathing and to conserve breathing gases. An input valve selectively permits breathing gas to fill a flexible gas reservoir through a fluidic connector. Breathing gas can be maintained at an elevated pressure. The fluidic connector delivers gas to an output interface, such as an oxygen mask. An inspiratory valve is permitted to open when inspiration is sensed by an inspiratory sensor, and an expiratory valve is permitted to open when expiration is sensed by an expiratory sensor. The inspiratory and expiratory sensors can be separate or embodied as an inspiratory-expiratory sensor. A sensor reservoir fluidically open to a volume between the output interface and the face of the user can expand or compress to indicate inspiration or expiration. The inspiratory and expiratory valves can be electromagnetically operated.
A breathing gas supply system, potentially for combat aircraft, operative to decrease hypoxia and asynchronous breathing and to conserve breathing gases. An input valve selectively permits breathing gas to fill a flexible gas reservoir through a fluidic connector. Breathing gas can be maintained at an elevated pressure. The fluidic connector delivers gas to an output interface, such as an oxygen mask. An inspiratory valve is permitted to open when inspiration is sensed by an inspiratory sensor, and an expiratory valve is permitted to open when expiration is sensed by an expiratory sensor. The inspiratory and expiratory sensors can be separate or embodied as an inspiratory-expiratory sensor. A sensor reservoir fluidically open to a volume between the output interface and the face of the user can expand or compress to indicate inspiration or expiration. The inspiratory and expiratory valves can be electromagnetically operated.
A nasal cannula (10) for use with an ambient pressure gas dispensing system (100) with ambient pressure tubing (122). Nasal prongs (20A, 20B) extend from a nasal cannula body (12, 14). A gas reception aperture (22) is in fluidic communication with an inner volume of the nasal cannula body (12, 14) for receiving gas through the tubing (122). A one-way expiratory valve (24) is retained by the nasal cannula body (12, 14). Gas provided by the tubing (122) can be inhaled through the nasal prongs (20 A, 20B) and expired breath can be discharged through the one-way expiratory valve (24). First and second FiO2 adjustment apertures (25A, 25B) are individually and selectively adjustable in size to provide a desired entrainment of atmospheric air with gas inhaled through the nasal prongs (20A, 20B). The nasal cannula body (12, 14) is formed from a first body member (12) of resilient and flexible material assembled with a cavity that receives a second body member (14) of rigid material.
A gas blending apparatus (10) and an ambient pressure gas delivery and conservation system with such a gas blending apparatus (10) for delivering gas at ambient pressure from a donor reservoir (104) to a recipient. A main conduit body (12) has a first port in fluidic communication with the donor reservoir (104) and a second port for supplying gas to the recipient through ambient pressure tubing (122). A one-way inspiratory valve (32) between the first port and the second port permits gas to be drawn from the reservoir ( 104) but not to be received through the second port, through the first port, and into the donor reservoir (104). An air-input orifice (18) permits ambient air to be blended with gas drawn from the reservoir (104). An orifice adjustment member (16) is selectively repositionable relative to the air-input orifice (18) to adjust the effective size of the aperture thereby to adjust the ratio of ambient air to gas drawn from the reservoir (104).
A nasal cannula for use with an ambient pressure gas dispensing system with ambient pressure tubing. Nasal prongs extend from a nasal cannula body. A gas reception aperture is in fluidic communication with an inner volume of the nasal cannula body for receiving gas through the tubing. A one-way expiratory valve is retained by the nasal cannula body. Gas provided by the tubing can be inhaled through the nasal prongs and expired breath can be discharged through the one-way expiratory valve. First and second FiO2 adjustment apertures are individually and selectively adjustable in size to provide a desired entrainment of atmospheric air with gas inhaled through the nasal prongs. The nasal cannula body is formed from a first body member of resilient and flexible material assembled with a cavity that receives a second body member of rigid material.
A gas blending apparatus and an ambient pressure gas delivery and conservation system with such a gas blending apparatus for delivering gas at ambient pressure from a donor reservoir to a recipient. A main conduit body has a first port in fluidic communication with the donor reservoir and a second port for supplying gas to the recipient through ambient pressure tubing. A one-way inspiratory valve between the first port and the second port permits gas to be drawn from the reservoir but not to be received through the second port, through the first port, and into the donor reservoir. An air-input orifice permits ambient air to be blended with gas drawn from the reservoir. An orifice adjustment member is selectively repositionable relative to the air-input orifice to adjust the effective size of the aperture thereby to adjust the ratio of ambient air to gas drawn from the reservoir.
F17D 3/05 - Arrangements for supervising or controlling working operations for controlling, signalling, or supervising the conveyance of several different products following one another in the same conduit, e.g. for switching from one receiving tank to another the different products not being separated
11.
AUTOMATIC SYSTEM FOR THE CONSERVATION OF OXYGEN AND OTHER SUBSTANCES
A system (10) and method for conserving oxygen and other gases supplied to a recipient. A supply conduit (408) supplies gas from a source (406) to a reservoir (404), which retains a volume of gas at ambient pressure. A conduit (422) supplies gas from the reservoir (404) to the recipient. An inflation detection system, such as an electro-mechanical system or a contactless system (456), detects when the reservoir (404) is below a state of inflation and when the reservoir (404) is inflated to the state of inflation. A valve system prevents gas from flowing from the source (406) and into the reservoir (404) when the reservoir (404) is at the predetermined state of inflation, and the valve system permits gas to flow from the source (406) into the reservoir (404) when the reservoir (404) is below the predetermined state of inflation whereby gas within the reservoir (404) can be continually replenished without pressurization above ambient pressure.
A system (10) and method for conserving oxygen and other gases supplied to a recipient. A supply conduit (408) supplies gas from a source (406) to a reservoir (404), which retains a volume of gas at ambient pressure. A conduit (422) supplies gas from the reservoir (404) to the recipient. An inflation detection system, such as an electro-mechanical system or a contactless system (456), detects when the reservoir (404) is below a state of inflation and when the reservoir (404) is inflated to the state of inflation. A valve system prevents gas from flowing from the source (406) and into the reservoir (404) when the reservoir (404) is at the predetermined state of inflation, and the valve system permits gas to flow from the source (406) into the reservoir (404) when the reservoir (404) is below the predetermined state of inflation whereby gas within the reservoir (404) can be continually replenished without pressurization above ambient pressure.
Medical apparatus and equipment for delivering air or oxygen
to treat respiratory diseases and conditions; medical
apparatus and equipment for the treatment of respiratory
diseases and conditions; medical apparatus and equipment for
the supply of medical gases.
(1) Medical apparatus and equipment for delivering air or oxygen to treat respiratory diseases and conditions; medical apparatus and equipment for the supply of medical gases
15.
Automatic system for the conservation of gas and other substances
A system for conserving oxygen and other gasses supplied to a recipient. A supply conduit supplies gas from a source to a reservoir, which retains a volume of gas at ambient pressure. A conduit supplies gas from the reservoir to the recipient, and an inflation detection system detects when the reservoir is below a state of inflation and when the reservoir is inflated to the state of inflation. A valve system prevents gas from flowing from the source and into the reservoir when the reservoir is at the predetermined state of inflation, and the valve system permits gas to flow from the source and into the reservoir when the reservoir is below the predetermined state of inflation whereby gas within the reservoir can be continually replenished without pressurization above ambient pressure. The inflation detection system can be an electro-mechanical system. Alternatively, the inflation detection system can be a contactless system.
A61M 16/00 - Devices for influencing the respiratory system of patients by gas treatment, e.g. ventilators Tracheal tubes
A61M 16/20 - Valves specially adapted to medical respiratory devices
A23L 3/3409 - Preservation of foods or foodstuffs, in general, e.g. pasteurising, sterilising, specially adapted for foods or foodstuffs by treatment with chemicals in the form of gases, e.g. fumigation; Compositions or apparatus therefor
C12H 1/12 - Pasteurisation, sterilisation, preservation, purification, clarification, or ageing of alcoholic beverages without precipitation
Medical apparatus and equipment for delivering air or oxygen to treat respiratory diseases and conditions; Medical apparatus and equipment for the treatment of respiratory diseases and conditions; Medical apparatus and equipment for the supply of medical gases
