Infusion system having plural fluid input ports and at least one patient output port
First Claim
1. 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.
2 Assignments
0 Petitions
Accused Products
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 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.
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Citations
51 Claims
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1. An infusion system, comprising:
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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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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24. An infusion system, comprising:
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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 by said pumping means in any order; 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 the plural sources of fluid to the pumping means along a fluid flow path common to the plural sources and for guiding each such fluid from the pumping means to the at least one output line; means for controlling said pumping means in accordance with a set of instructions; and means for establishing said set of instructions for each of the plural sources of fluid to include the parameters of rate of pumping, and to include a predetermined combination of said parameters for at least two of said plural sources. - View Dependent Claims (25, 26, 27, 28, 29, 38)
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30. An infusion system, comprising:
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a housing having disposable cassette receving 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 selecting fluids to be infused into a patient through any one of said plural fluid flow lines; means for selecting first, second, and third time intervals; and means coupled to the fluid and to the time selecting means for alternately infusing two selected fluids into the patient successively in said first and second time intervals repetitively during said third time interval so as to effect a mixing of the two fluids. - View Dependent Claims (31)
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32. An infusion system having plural fluid input ports each directly connectable to a corresponding one of plural fluid inputs and having a patient output port directly connectable to a patient output line, comprising:
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means for selecting at least one first fluid input in a first time sequence that specifies a desired successive time sequence, and for selecting at least one second fluid input different from said at least one first fluid input in a second time sequence that specifies a desired repeat interval and a desired number of times; and means coupled to all of said plural fluid input ports along a common fluid flow path and to said patient output port and cooperative with said selecting means for controllably pumping the selected fluids at selected rates during said first and second time sequences through said patient output port such that pumping during said second time sequence interrupts pumping during said first time sequence in the event of time coincidence therebetween. - View Dependent Claims (33, 34, 35, 36, 37, 39, 40, 41, 42)
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43. A method for administering fluids from plural fluid input ports individually in any order through a patient output port and into the circulatory system of a patient, comprising the steps of:
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selecting at least one fluid port in a first time sequence that specifies a desired successive time sequence; selecting at least one second fluid input port different from said at least one fluid input port in a second time sequence that specifies a desired repeat interval and a desired number of times; coupling a pump to all of said plural fluid input ports and to said patient output port along a common fluid flow path; and controllably pumping fluids from the selected fluid input ports along the common fluid flow path to said patient output port at selected rates during said first and second time sequences such that pumping during said first time sequence is interrupted in the event of time coincidence therebetween. - View Dependent Claims (44, 45, 46, 47, 48, 49)
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50. An infusion system having plural fluid input ports each directly connectable to a corresponding one of plural fluid inputs and having a patient output port directly connectable to a patient output line, comprising:
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means for selecting at least one first fluid input in a first time sequence that specifies a desired repeat interval and a desired number of times, and for selecting at least one second fluid input different from said at least one first fluid input in a second time sequence that specifies a desired repeat interval and a desired number of times; means coupled to all of said plural fluid input ports along a common fluid flow path and to said patient output port and cooperative with said selecting means for controllably pumping the selected fluids at selected rates during said first and second time sequences through said patient output port; and means for resolving any conflicts between pumping the first and second fluid inputs in the event that the first and second time sequences specify time-overlapping pumping. - View Dependent Claims (51)
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Specification