Infusion system having plural fluid input ports and at least one patient output port

US4696671A · kind A · utility

Assignee

• Omni Flow Company, Inc. · US

Inventors

• Paul Lawrence Epstein · Brookline, US
• Harry Petschek · Lexington, US
• Eric LaWhite · South Royalton, US
• Clair Strohl · Norfolk, US
• Henry Coyne · Framingham, US
• Edward Kaleskas · Jefferson, US
• George Adaniya · Swampscott, US

Key dates

• Filing date: Jun 11, 1986
• Grant date: Sep 29, 1987
• Expiry date: Jun 11, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S128/13
• WIPO field: Medical technology
• WIPO sector: Instruments

Abstract

An infusion system for administering multiple infusates at individually programmable rates, volumes, and sequences in any order from any one or more of plural fluid input ports through a patient output port and into the circulatory system of a patient. Infusates may be either continuously or time sequentially administered, and infusates may be either intermittently administered at selectively regular intervals or in time overlap to administer a dilution. Various error conditions are automatically detected and alarms generated in the event of conflicts between infusates, to identify times of no infusions, and to identify system malfunctions. The system is selectively operable, among others, in a priming mode, a maintenance mode, a normal-on mode, and a manual override mode. The system is operative to adapt actual to desired flow rates in normal operartion. All fluids flow through a unitary disposable cassette without making any other system contact. Air bubbles in the fluid line are automatically detected and disposed of. Fluid pressures are monitored and system operation adjusted as a function of such pressures. Infusates may be administered from syringes as well as from standard b…