Closed multi-fluid delivery system and method

A multi-fluid delivery system for delivering a plurality of preselected fluids to a fluid flow delivery port comprising:

• a plurality of deformable flow means for receiving fluid flow from a plurality of fluid flow sources;
• a plurality of flow control means with each of said deformable flow means closable by a corresponding one of said flow control means;
• means for combining fluid flow from selected of said flow means to form a combined fluid flow;
• and
• programmable control means, coupled to each of said flow control means for storing a plurality of selected fluid flow delivery schedules including fluid type and a selected delivery parameter for each type and for actuating one or more of said flow control means such that selected fluids flow into said combining means in accordance with one of said stored delivery schedules and including compensation means for adjusting actuation of selected of said flow control means to sequentially blend selected of the fluids so as to minimize fluid flow transients at said delivery port in response to said programmable control means switching from a first to a second fluid flow delivery schedule.

A closed system for controllably delivering predetermined quantities of at least first and second fluids from first and second sources comprising:

• first and second fluid flow means each couplable to a respective source;
• first and second blocking means each positionable adjacent a respective flow means for permitting the flow of fluid therethrough in response to an applied electrical signal;
• sealed fluid flow junction means coupled to said first and said second flow means for combining first and second fluid flow to a single output at an output flow port;
• an output fluid flow conduit coupled to said output port of said fluid flow junction means;
• means for specifying a first fluid flow delivery schedule including at least rate information for each of the fluids;
• means for translating said specified delivery rates into first and second sequences of electrical signals applied to said first and second blocking means so as to form first and second sequences of spaced-apart fluid quanta, corresponding to said first and second fluids, with members of each said sequence flowing into said junction and then flowing into said output conduit and with members of said first sequence interspersed between members of said second sequence, said members mixing in said conduit so as to provide an output fluid flow including the first fluid at said first specified flow rate and the second fluid at said second specified flow rate.

A system for delivery of a plurality of fluids to a patient and for providing hard copy records relating thereto comprising:

• at least first and second fluid flow means each couplable to a respective fluid source;
• at least first and second blocking means each positionable adjacent a respective flow means for permitting the flow of fluid therethrough in response to an applied electrical signal;
• fluid junction means coupled to at least said first and said second flow means;
• an output fluid flow conduit coupled to said fluid flow junction means and with a free output end;
• means for specifying a fluid flow delivery schedule at said output end;
• means for translating said specified delivery schedule into first and second sequences of electrical signals applied to said first and second blocking means so as to form first and second sequences of spaced-apart fluid quanta corresponding to said first and second fluids with members of each said sequence flowing into said junction and then flowing into said output conduit with members of said first sequence interspersed between members of said second sequence and with said members mixing in essentially only said conduit so as to provide an output fluid flow at said output end including the first fluid and the second fluid in accordance with said specified delivery schedule;
• and
• means for generating a record related to said delivery schedule.