Breath-synchronized concentrated-oxygen supplier

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 4681099
SERIAL NO

06797654

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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A breath-synchronized concentrated-oxygen supplier comprising an oxygen concentrator for producing and storing oxygen-enriched gas, and a buffer tank having an inlet connected to the oxygen concentrator and an outlet for temporarily storing the oxygen-enriched gas obtained from the concentrator. A valve is mounted in the outlet of the buffer tank so as to control flow of the oxygen-enriched gas from the buffer tank to the respiratory system of a living body, the valve having a gas flow path that is open to the atmosphere. A sensor, provided for sensing the respiration of the living body, generates an output signal indicative of the inhalation and exhalation phases of the respiration. An input device, on which a ratio between the entire length of the inhalation phase and a specific end portion thereof is set is included as is a regulator responsive to the sensor and input device for detecting the duration of each inhalation phase in succession based on the output signal from the sensor. The regulator also opens the valve at the beginning of each inhalation phase, and maintains the open time of the valve based on a period determined by a combination of averaging the preceding inhalation durations and the ratio set on the input device. Oxygen-enriched gas is supplied to the living body during each inhalation phase except for the specific end portion thereof, and the buffer tank acts to make the initial flow rate of the oxygen-enriched gas higher than the steady flow rate thereof in each inhalation phase.

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Patent Owner(s)

Patent OwnerAddress
RESPIRONICS INC1010 MURRY RIDGE LANE MURRYSVILLE PA 15668

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujii, Katsumasa Okayama, JP 15 610
Okazaki, Naoto Yonago, JP 21 510
Sato, Toru Yonago, JP 99 1777

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