# US 2021/0330955 A1 · Screw control medical fluid flow manifolds > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2021/0330955 A1 - Document ID: US20210330955A1 - Status: Published application - Kind: A1 - Application number: 16/857,085 - Filed: 2020-04-23 - Published: 2021-10-28 - Earliest claimed: 2020-04-23 - Assignees: CareFusion 303, Inc. - Applicants: CareFusion 303, Inc. - Inventors: Wantjinarjo SUWITO - Web page: https://patentgrep.com/patent/US20210330955A1 ## CPC - A61M 5/16813: {by controlling the degree of opening of the flow line} - A61M 39/22: Valves or arrangement of valves {(A61M39/02, A61M39/0247, A61M39/16 take precedence; regulating valves in infusion systems A61M5/16881; in devices worn by the patient for the reception of urine, faeces, catamenial or other discharge, or in colostomy devices A61F5/4405)} - A61M 5/1408: {in parallel, e.g. by manifolds or with sequencing valves} - A61M 5/16827: {controlling delivery of multiple fluids, e.g. sequencing, mixing or via separate flow-paths (infusion of multiple fluids without using a controller A61M5/1407)} - A61M 5/16881: {Regulating valves} - A61M 2039/0009: {Assemblies therefor designed for particular applications, e.g. contrast or saline injection, suction or irrigation} - A61M 2039/1077: {Adapters, e.g. couplings adapting a connector to one or several other connectors} - A61M 2039/226: {Spindles or actuating means} - F16K 37/00: Special means in or on valves or other cut-off apparatus for indicating or recording operation thereof, or for enabling an alarm to be given - Y10T 137/8225: Position or extent of motion indicator - Y10T 137/87676: With flow control - A61M: DEVICES FOR INTRODUCING MEDIA INTO, OR ONTO, THE BODY (introducing media into or onto the bodies of animals A61D7/00; means for inserting tampons A61F13/26; devices for administering food or medicines orally A61J; containers for collecting, storing or administering blood or medical fluids A61J1/05); DEVICES FOR TRANSDUCING BODY MEDIA OR FOR TAKING MEDIA FROM THE BODY (surgery A61B; chemical aspects of surgical articles A61L); DEVICES FOR PRODUCING OR ENDING SLEEP OR STUPOR {(Electrotherapy, e.g. producing anaesthesia by the use of alternating or intermittent currents A61N1/36021)} - F16K: VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING {(devices for emptying and evacuating the excess liquid in valves or conduits F16L55/07)} - Y10T: TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION ## Abstract Fluid flow manifold assemblies for use in fluid flow sets are provided. The fluid flow manifold assembly includes a body having a main fluid channel and a reinforcing plate, the main fluid channel having a fluid inlet, a fluid outlet and a drug port. A flow control assembly is disposed opposite the main fluid channel from the drug port. The flow control assembly is configured to shut off fluid flow through the drug port into the main fluid channel with a plunger of the flow control assembly in a closed position and to allow incremental levels of fluid flow through the drug port into the main fluid channel by variably retracting the plunger based on rotation of a knob of the flow control assembly. ## Claims ### Claim 1 A fluid flow manifold assembly, comprising: a body having a main fluid channel and a reinforcing plate; a fluid inlet disposed on a first end of the main fluid channel; a fluid outlet disposed on a second end of the main fluid channel; a drug port coupled to the main fluid channel and disposed at an angle to the main fluid channel; and a flow control assembly coupled to the main fluid channel and opposing the drug port, the flow control assembly comprising: a plunger; a seal member; a cap thread; and a knob, wherein the flow control assembly is configured to shut off fluid flow through the drug port with the plunger disposed in a first position, to allow a maximum fluid flow through the drug port with the plunger disposed in a second position, and to allow incremental levels of fluid flow through the drug port with the plunger disposed in varying positions between the first and second positions, wherein the plunger position is based on rotation of the knob in one of a clockwise and a counterclockwise direction. ### Claim 2 (depends on 1) The fluid flow manifold assembly of claim 1, wherein the drug port is disposed orthogonally to the main fluid channel and the flow control assembly is disposed axially to the drug port. ### Claim 3 (depends on 1) The fluid flow manifold assembly of claim 1, further comprising an inlet connector coupled to the fluid inlet. ### Claim 4 (depends on 3) The fluid flow manifold assembly of claim 3, wherein the inlet connector is a female Luer connector. ### Claim 5 (depends on 1) The fluid flow manifold assembly of claim 1, further comprising an outlet connector coupled to the fluid outlet. ### Claim 6 (depends on 5) The fluid flow manifold assembly of claim 5, wherein the outlet connector is a male Luer connector. ### Claim 7 (depends on 1) The fluid flow manifold assembly of claim 1, further comprising a port connector coupled to the drug port. ### Claim 8 (depends on 7) The fluid flow manifold assembly of claim 7, wherein the port connector is a female Luer connector. ### Claim 9 (depends on 1) The fluid flow manifold assembly of claim 1, further comprising a cavity disposed in the reinforcement plate, wherein the knob is disposed within the cavity. ### Claim 10 (depends on 9) The fluid flow manifold assembly of claim 9, wherein the cavity has a stop surface configured to prevent the knob from being rotated further in a counterclockwise direction. ### Claim 11 (depends on 1) The fluid flow manifold assembly of claim 1, further comprising an indicator element disposed on the reinforcement plate. ### Claim 12 (depends on 11) The fluid flow manifold assembly of claim 11, wherein the indicator element is one of printed on the reinforcement plate, etched onto the reinforcement plate and formed by a material of the reinforcement plate. ### Claim 13 (depends on 1) The fluid flow manifold assembly of claim 1, wherein the fluid flow manifold assembly is configured to prevent a dead space when the plunger is disposed in any position between and including the first position and the second position. ### Claim 14 (depends on 1) The fluid flow manifold assembly of claim 1, wherein the fluid flow manifold assembly is configured to allow fluid flow through the main fluid channel from the fluid inlet with any position of the plunger between and including the first position and the second position. ### Claim 15 A fluid flow set, comprising: a fluid inlet tube; a fluid outlet tube; a drug delivery tube; and a fluid flow manifold assembly, the fluid flow manifold assembly comprising: a body having a main fluid channel and a reinforcing plate; an inlet connector disposed on a first end of the main fluid channel and coupled to the fluid inlet tube; an outlet connector disposed on a second end of the main fluid channel and coupled to the fluid outlet tube; a port connector coupled to the main fluid channel and coupled to the drug delivery tube; and a flow control assembly coupled to the main fluid channel opposing the port connector, the flow control assembly comprising a plunger, a seal member, a cap thread and a knob, wherein the flow control assembly is configured to shut off fluid flow into the main fluid channel from the drug delivery tube with the plunger disposed in a first position, to allow a maximum fluid flow into the main fluid channel from the drug delivery tube with the plunger disposed in a second position, and to allow incremental levels of fluid flow into the main fluid channel from the drug delivery tube with the plunger disposed in varying positions between the first and second positions, and wherein the plunger position is based on rotation of the knob in one of a clockwise and a counterclockwise direction. ### Claim 16 (depends on 15) The fluid flow set of claim 15, wherein the fluid flow manifold assembly is an anesthesia manifold. ### Claim 17 (depends on 15) The fluid flow set of claim 15, wherein the fluid flow manifold assembly comprises three drug ports, each drug port coupled to a separate port connector and each separate port connector coupled to a separate drug delivery tube. ### Claim 18 (depends on 15) The fluid flow set of claim 15, the fluid flow manifold assembly further comprising a cavity disposed in the reinforcement plate, the cavity having a stop surface configured to prevent the knob from being loosened past a defined point. ### Claim 19 (depends on 15) The fluid flow set of claim 15, wherein the fluid flow manifold assembly is configured to prevent a dead space when the plunger is disposed in any position between and including the first position and the second position. ### Claim 20 (depends on 15) The fluid flow set of claim 15, wherein the fluid flow manifold assembly is configured to allow fluid flow through the main fluid channel from the fluid inlet with any position of the plunger between and including the first position and the second position.