초록 ▼

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 se

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 bag or bottle containers. Infusate from a selected input port may be controllably pumped into a syringe for unsticking the syringe plunger. The system is selectively operable to adjust total fluid volume and rate to below preselected values for patients whose total fluid intake must be restricted. The system is operable to maintain an accurate record of total infusion history.

대표청구항 ▼

An infusion system, comprising: a housing having disposable cassette receiving means; a disposable cassette releasably mounted to said cassette receiving means of said housing; said disposable cassette including means for receiving individual ones of plural infusion flow lines; means for pumping to

An infusion system, comprising: a housing having disposable cassette receiving means; a disposable cassette releasably mounted to said cassette receiving means of said housing; said disposable cassette including means for receiving individual ones of plural infusion flow lines; means for pumping to at least one output line; means cooperative with said line receiving means for selecting among plural sources of fluid respectively in fluid communication with said plural infusion flow lines that are to be individually pumped in any order by said pumping means; said disposable cassette including means coupled to all of said plural sources of fluid and cooperative with said selecting means for guiding each individual fluid selected from among the plural sources of fluid to the pumping means along a fluid path common to the plural sources and for guiding each such fluid from the pumping means to the at least one output line; a clock for providing a timing signal; means connected to the pumping means and to the clock for controlling the pumping means in accordance with the said instructions and said timing signal; and means for establishing said set of instructions for each of said plural sources to include rate of pumping.