Abstract: An intravenous accumulator tube for storing fluid being administered through an intravenous administration set patient includes an expansible chamber connected inline in the intravenous administration set for accumulating and storing fluid being administered when flow stoppage or restriction is encountered, whereby the stored fluid may be administered to the patient when the flow stoppage or restriction is removed.

Abstract: A dual valve assembly for intravenous infusions from multiple parenteral fluid sources, the assembly controlling both forward and reverse flow through a flow line includes normally seated first and second valves mounted for movement toward and away from respective valve seats to control flow in a first direction, one of said valves being opened in response to opening movement of the other valve and said one valve including a second seat and movable into closing relationship on its second seat in response to reverse flow to thus prevent reverse flow through the assembly.

Abstract: Electronic control apparatus for controlling the administration of a plurality of separate fluids independently and consecutively, includes electrical circuitry connected with a plurality of valve operators to operate valves in a plurality of sets to control flow therethrough.

Abstract: An electronically controlled intravenous infusion set of the gravity feed type having a flow path including a drip chamber and an internal valve for regulating flow through the set. Electromagnetic valve operating structure, positioned outside the IV set, controls the internal valve in response to an electronic control system. The electronic control system serves to open the valve to allow a drop to fall, and includes a control circuit. The control circuit includes an optical drop detector, associated with but positioned outside the drip chamber, which senses the falling drop and signals the control circuit to close the valve. The control circuit also includes a variable frequency clock and associated digital selectors for affording an attendant the ability to precisely select a desired drip rate. An alarm system, operating on digital principles, senses high drop rate or low drop rate conditions and, in response thereto, puts the control system into an alarm condition.

Abstract: An electronically controlled, gravity-feed, intravenous infusion set in which a length of intravenous tubing is connected with a drip chamber to convey a fluid to be administered intravenously, the improvement comprising a normally closed internal valve in said set operable to prevent flow of fluid through the set and operated to open position to enable passage of a drop of fluid through the set, and an electrically controlled actuator operatively associated with the valve to operate the valve to its open position at a predetermined frequency of operation and to hold the valve open until a drop forms and falls to thus determine the drip rate of fluid through the set, said internal valve thus enabling control of flow of fluid through the set without necessitating crimping or other deformation of the set and thereby resulting in dependable and accurate control of the flow rate of the fluid to be administered intravenously.

Abstract: A parenteral administration set, particularly for intravenous infusion of fluids, includes a drip chamber and a length of flexible intravenous tubing connected therewith. A flow controlling valve is in the length of tubing and is operable between open and closed positions from exteriorly of the tubing to obtain a desired drip rate corresponding directly with the frequency of valve operation. A fixed flow restrictor is in the length of tubing to impart a predetermined back pressure to flow through the set, whereby the rate of drop formation in the drip chamber is controlled to a value to insure that only one drop will form and fall for each valve opening.

Abstract: A flat profile filter for IV sets and the like, includes an elongate, flat housing having a filter supporting frame therein defining at least one longitudinally extending, laterally facing opening of greater size than could be accommodated transversely in the housing, and a filter element secured on the frame in spanning relationship to the opening.

Abstract: An intravenous injection apparatus comprising at least a pair of filters serially arranged between opposite ends of an intravenous injection set, and a needle adapter and filter and method of making same, wherein the adapter includes a housing having a bore therethrough and an insert positioned within said bore, said insert having a bore therethrough and a unique filter presealed to said insert across the bore through the insert to filter contaminants from material flowing through said needle adapter.

Abstract: An intravenous injection apparatus comprising at least a pair of filters serially arranged between opposite ends of an intravenous injection set, and a needle adapter and filter and method of making same, wherein the adapter includes a housing having a bore therethrough and an insert positioned within said bore, said insert having a bore therethrough and a unique filter presealed to said insert across the bore through the insert to filter contaminants from material flowing through said needle adapter.

Abstract: An intravenous injection apparatus comprising at least a pair of filters serially arranged between opposite ends of an intravenous injection set, and a needle adapter and filter and method of making same, wherein the adapter includes a housing having a bore therethrough and an insert positioned within said bore, said insert having a bore therethrough and a unique filter presealed to said insert across the bore through the insert to filter contaminants from material flowing through said needle adapter.