[특허]Method for controlling mixing and delivery of respiratory gas

Method for controlling mixing and delivery of respiratory gas 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A62B-009/02 G05B-001/00
출원번호	US-0002690 (1993-01-11)
발명자 / 주소	Forare Lester (San Diego CA) Fennema Paul (Fallbrook CA) Gagne Roger (Carlsbad CA)
출원인 / 주소	Puritan-Bennett Corporation (Carlsbad CA 02)
인용정보	피인용 횟수 : 157 인용 특허 : 0

초록 ▼

The ventilator control method for delivery of respiratory gas to a patient involves an apparatus which includes a pressure sensor for measuring the pressure within a gas containment vessel, the control of the flow of respiratory gas into the containment vessel responsive to pressure within the containment vessel, and the control of the outflow of respiratory gas responsive to changes in pressure in the containment vessel. Both the inflow of gas to a receiver tank and outflow of respiratory gas are responsive to modes of breathing being provided to a patient.

대표청구항 ▼

A method for delivering respiratory gas to a patient from a respirator providing a rigid, fixed wall pressure containment vessel having first and second inlet ports, each of said inlet ports connecting the vessel in fluid communication with first and second separate sources of respective first and second component gases to be combined in said vessel in a desired ratio to form said respiratory gas, said respiratory gas in said vessel having an initial known ratio of said component gases; said respirator providing outlet means to connect the vessel in fluid communication with the patient; said respirator providing sensor means to sense the pressure of said respiratory gas in the containment vessel; said respirator providing means to sequentially control the flow of said component gases through said inlet ports; and said respirator providing output flow control means to control the flow of said respiratory gas through said outlet means, the method further comprising the steps of: a) measuring the pressure of gas within said vessel following inhalation by the patient; b) determining pressure increase values for said first and second component gases in said vessel corresponding to the number of molecules of each said component gas required to fill said vessel with said desired ratio of said component gases to a desired fill pressure based upon the total pressure and said initial known ratio of component gases in said vessel; c) sequentially filling said vessel with said component gases to said corresponding pressure increase values while measuring pressure in said containment vessel, by introducing said first component gas into said vessel through said first inlet port while said second inlet port is closed, and said second component gas through said second inlet port while said first inlet is closed according to said pressure change values until said fill pressure of gas in said vessel is reached; d) measuring an actual pressure increase in said containment vessel for each said component gas introduced into said vessel; e) determining the ratio of said component gases in said containment vessel based upon said initial known ratio of component gases in said vessel, said total pressure and said actual pressure changes for each said component gas introduced into said vessel; f) withdrawing said respiratory gas from said vessel for a predetermined period of time according to a withdrawal flow command; g) measuring an outflow change in the pressure of gas in the vessel over time; (h) subtracting said measured outflow change in pressure from a desired pressure change to obtain a gas pressure change error in the amount of gas delivered in a gas delivery; (i) integrating said gas pressure change error for each said delivery to determine an integral error in the amount of gas delivered; (j) setting said withdrawal flow command for the next withdrawal to said desired pressure change plus an amount proportional to the above integral error; (k) controlling said withdrawing of gas from said vessel in a predetermined manner responsive to changes in the pressure of gas sensed in said containment vessel; and (l) repeating steps h)-j) for a subsequent delivery of a volume of gas.

이 특허를 인용한 특허 (157)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
구성항목	기본정보 상세정보 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표IPC 관리번호, 국가코드, 자료구분, 상태, 출원번호, 출원일자, 공개번호, 공개일자, 공고번호, 공고일자, 등록번호, 등록일자, 발명명칭(한글), 발명명칭(영문), 출원인(한글), 출원인(영문), 출원인코드, 대표출원인, 출원인국적, 출원인주소, 발명자, 발명자E, 발명자코드, 발명자주소, 발명자 우편번호, 발명자국적, 대표IPC, IPC코드, 요약, 미국특허분류, 대리인주소, 대리인코드, 대리인(한글), 대리인(영문), 국제공개일자, 국제공개번호, 국제출원일자, 국제출원번호, 우선권, 우선권주장일, 우선권국가, 우선권출원번호, 원출원일자, 원출원번호, 지정국, Citing Patents, Cited Patents
저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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Method for controlling mixing and delivery of respiratory gas 원문보기

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Method for controlling mixing and delivery of respiratory gas 원문보기

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