[특허]Blood extraction and reinfusion flow control system and method

Blood extraction and reinfusion flow control system and method 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61M-001/03
출원번호	US-0556778 (1990-07-24)
발명자 / 주소	Prince Paul R. (San Juan Capistrano CA)
출원인 / 주소	Baxter International, Inc. (Deerfield IL 02)
인용정보	피인용 횟수 : 136 인용 특허 : 0

초록 ▼

A method and system for adaptively controlled withdrawal/infusion of a fluid, such as blood, to or from a fluid source, such as a blood vessel. An adaptive flow rate limit is established and periodically adjusted during the course of withdrawal/infusion so as to maximize and optimize the withdrawal/infusion rate while, at the same time, providing for rapid corrective adjustments in flow rate responsive to early indications of flow disruption, such as occlusion or collapse of the blood vessel during blood withdrawal. The method and system of the invention is particularly applicable to automated apheresis systems.

대표청구항 ▼

A system for controlled withdrawal of blood from a blood vessel, said system comprising: a fluid reservoir fluidly connected to said blood vessel by a first fluid flow path; a pump for pumping blood from said blood vessel through said first fluid flow path to said fluid reservoir; a pressure sensor for sensing the pressure within said first fluid flow path; a flow rate sensor for sensing the flow rate within said first fluid flow path; an adaptive flow rate control system operatively connected to (1) said pressure sensor, (2) said flow rate sensor and (3) said pump, to receive pressure and flow rate signals from said pressure and flow rate sensors and to send control signals to said pump; said adaptive flow rate control system comprising: (a) means for receiving and storing a maximum flow rate limit setting entered by an operator; (b) means for receiving said pressure and flow rate signals from said pressure sensor and said flow rate sensor and for generating therefrom and storing a standard flow rate/pressure curve defining the flow rate/pressure relationship of blood passing freely through said blood vessel and said first flow path without substantially reduced pressure within said blood vessel as determined; (c) means for calculating a control curve in relation to, and below, said standard flow rate/pressure curve; (d) means for setting an initial adaptive flow rate limit no greater than said maximum flow rate setting; (e) means for signaling said pump to pump blood at a rate substantially equal to said initial adaptive flow rate, for a first timed pumping period; (f) means for sensing whether the pressure within the first flow path has remained above the control curve throughout the immediately preceding timed pumping period and, if so, for increasing the adaptive flow rate limit by a predetermined increment amount and, thereafter, for signaling the pump to pump blood at the increased adaptive flow rate limit, for a subsequent timed pumping period; (g) means for sensing whether the pressure within the first flow path has fallen below the control curve and, if so, for signaling the pump to decrease the flow rate to a rate at which steady-state pressure on said control curve is established for a timed stabilization period; (h) means for determining, after completion of the timed stabilization period, whether the point on said control curve whereat steady-state pressure has been established for said stabilization time period is more than a predetermined amount below said adaptive flow rate limit, and if so, for: decreasing the adaptive flow rate limit by a predetermined decrement amount to establish a decreased adaptive flow rate limit and, thereafter; signaling the pump to pump at said decreased adaptive flow rate limit for a subsequent timed pumped period.

이 특허를 인용한 특허 (136)

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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)
메일정보	받는사람 (필수) @ 보내는사람 (선택) @ 제목 내용 KISTI 검색결과 이메일 서비스
안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

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Blood extraction and reinfusion flow control system and method 원문보기

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