[특허]System and method for detecting abnormalities in intravascular infusion

System and method for detecting abnormalities in intravascular infusion 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	A61M-031/00
출원번호	US-0322291 (1989-03-13)
발명자 / 주소	Doan David (San Diego CA)
출원인 / 주소	Ivac Corporation (San Diego CA 02)
인용정보	피인용 횟수 : 75 인용 특허 : 0

초록 ▼

The system and method for detecting abnormalities in infusion of parenteral fluid involves producing perturbation of fluid flow by varying the flow rate of the fluid with respect to an equilibrium flow rate, measuring the pressure level, and measuring the pressure of the fluid over a period of time, to determine equilibrium pressure and a pressure response of the fluid to the perturbation, determining an integral of the difference between the equilibrium pressure and the pressure response, determining resistance to fluid flow, determining a second integral of the difference between the pressure response and equilibrium pressure multiplied by time, and determining compliance by dividing the second integral by the first integral. Resistance and compliance values are displayed, and an alarm is generated when the resistance or compliance parameters fall outside of reference ranges.

대표청구항 ▼

A system for detecting abnormalities in infusion of parenteral fluid from a parenteral fluid delivery system to a patient comprising: a) infusion means for producing a perturbation of said fluid flow by varying the rate of fluid flow from an equilibrium flow rate with a specific volume of fluid; b) sensor means for measuring pressure of said fluid over a period of time and adapted to generate a signal representing a pressure response of said fluid to said perturbation and a signal representing an equilibrium pressure level; c) first integrator means operatively connected to said sensor means for determining a first integral of the difference between said equilibrium pressure signal and said pressure response signal over time, and for generating a signal representing said first integral; d) means for determining resistance to said infusion of fluid from the delivery system adapted to scale said first integral signal according to said specific volume, and for producing a signal representing the resistance to fluid flow; e) second integrator means for determining a second integral by multiplying the difference between said pressure response signal over time and said equilibrium pressure signal by a value representing said time, and integrating the resultant product with respect to said time, and adapted to generate a signal representing said second integral determined; and f) means responsive to said first and second integrator means for determining compliance of said fluid delivery system by dividing said second integral signal by said first integral signal to produce a signal representing an effective time constant, and by scaling said effective time constant by said previously determined resistance to produce a signal representing compliance of said fluid delivery system.

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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

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연합인증

System and method for detecting abnormalities in intravascular infusion 원문보기

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System and method for detecting abnormalities in intravascular infusion 원문보기

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연구과제 타임라인

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이 특허를 인용한 특허 (75)

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