Keep vein open infusion flow control device

Patent metadata

Field	Value
Publication number	US-12364812-B2
Application number	US-202217851608-A
Country	US
Kind code	B2
Filing date	Jun 28, 2022
Priority date	Apr 29, 2020
Publication date	Jul 22, 2025
Grant date	Jul 22, 2025

Abstract

Keep vein open (KVO) infusion flow control devices are provided. The KVO infusion flow control device couples to intravenous (IV) tubing and includes a flow controller that provides a full open fluid flow rate through an outlet portion of the IV tubing when the flow controller is in an open position, and a KVO fluid flow rate through the outlet portion of the IV tubing when the flow controller is in a KVO position. Visual indicators are disposed on the KVO infusion flow control device.

First claim

The invention claimed is:

1. A keep vein open (KVO) infusion flow control device, comprising:
an inlet tube connector comprising an intravenous (IV) inlet port, a first outlet port and a second outlet port;
an outlet tube connector comprising an IV outlet port, a first inlet port, a second inlet port and a flow control orifice disposed within the second inlet port;
a full flow tube coupled at one end to the first outlet port of the inlet tube connector and coupled at another end to the first inlet port of the outlet tube connector;
a KVO flow tube coupled at one end to the second outlet port of the inlet tube connector and coupled at another end to the second inlet port of the outlet tube connector; and
a single flow controller coupled to the full flow tube, the single flow controller by itself configured to control fluid flow through the full flow tube and an amount of fluid flow through the KVO flow tube,
wherein the KVO flow tube is configured to always provide some fluid flow.

2. The KVO infusion flow control device of claim 1 , wherein the flow controller is configured to provide full fluid flow through the full flow tube into the outlet tube connector when the flow controller is disposed in a first position that does not occlude the full flow tube.

3. The KVO infusion flow control device of claim 1 , wherein the flow controller is configured to shut off fluid flow through the full flow tube into the outlet tube connector when the flow controller is disposed in a second position that occludes the full flow tube to a predetermined degree.

4. The KVO infusion flow control device of claim 3 , wherein the flow control orifice is configured to limit fluid flow into the outlet tube connector when the flow controller is disposed in the second position.

5. The KVO infusion flow control device of claim 4 , wherein the flow control orifice is sized and shaped to provide a predetermined KVO fluid flow rate into the outlet tube connector when the flow controller is disposed in the second position.

6. The KVO infusion flow control device of claim 1 , further comprising an inlet connector coupled to the IV inlet port, the inlet connector configured to be coupled to an inlet IV tube.

7. The KVO infusion flow control device of claim 6 , further comprising an outlet connector coupled to the IV outlet port, the outlet connector configured to be coupled to an outlet IV tube.

8. The KVO infusion flow control device of claim 1 , wherein the flow control orifice comprises a tube engagement portion disposed within an internal diameter of the KVO flow tube.

9. The KVO infusion flow control device of claim 8 , wherein the flow control orifice further comprises a restriction portion disposed adjacent to the tube engagement portion, the restriction portion configured to block fluid flow from the tube engagement portion into the outlet tube connector.

10. The KVO infusion flow control device of claim 9 , wherein the flow control orifice further comprises a flow portion disposed within the restriction portion, the flow portion configured to restrict fluid flow into the outlet tube connector to a KVO fluid flow rate.

11. The KVO infusion flow control device of claim 1 , wherein the flow controller is a pinch clamp.

12. A keep vein open (KVO) infusion flow control device, comprising:
a body comprising a full open orifice disposed through the body and a separate smaller KVO orifice disposed through the body at an angle to the full open orifice;
a control member coupled to the body; and
a visual indicator,
wherein a first position of the control member is configured to engage the full open orifice with a fluid flow path to provide full fluid flow through an intravenous (IV) tube and a second position of the control member is configured to engage the KVO orifice with the fluid flow path to provide KVO fluid flow through the same IV tube.

13. The KVO infusion flow control device of claim 12 , wherein the control member comprises:
an open control arm having a first visual indicator disposed thereon, the open control arm parallel to the full open orifice; and
a KVO control arm having a second visual indicator disposed thereon, the KVO control arm parallel to the KVO orifice,
wherein the body is rotatably coupled to a fluid flow housing, the fluid flow housing including an inlet connector configured to receive a fluid inlet IV tube at one end of the fluid flow housing and an outlet connector configured to receive a fluid outlet IV tube at an opposing end of the fluid flow housing.

14. The KVO infusion flow control device of claim 13 , further comprising a first flange disposed circumferentially around a portion of the inlet connector and a second flange disposed circumferentially around a portion of the outlet connector, wherein the fluid inlet IV tube is received in a gap between the first flange and the inlet connector and the fluid outlet IV tube is received in a gap between the second flange and the outlet connector.

15. The KVO infusion flow control device of claim 12 , wherein the control member comprises:
a circular control switch comprising:
a first visual indicator disposed on a top surface;
a gripping extension disposed on the top surface, the gripping extension parallel to the KVO orifice; and
a second visual indicator disposed on a top surface of the gripping extension,

wherein the body is rotatably coupled to a fluid flow housing, the fluid flow housing configured to receive a fluid inlet IV tube at one end of the fluid flow housing and to receive a fluid outlet IV tube at an opposing end of the fluid flow housing.

16. A keep vein open (KVO) infusion flow control device, comprising:
a body;
a switch movably coupled to the body between a full open flow position and a separate KVO flow position; and
a visual indicator,
wherein a first position of the switch is configured to engage a full open orifice with a fluid flow path to provide full fluid flow through intravenous (IV) tubing and a second position of the switch is configured to engage a KVO orifice with the fluid flow path to provide KVO fluid flow through the same IV tubing, the KVO orifice being smaller than the full open orifice.

17. The KVO infusion flow control device of claim 16 , wherein the switch comprises a slide switch disposed within a switch channel in the body,
wherein the IV tubing comprises a fluid inlet IV tube and a fluid outlet IV tube,
wherein the body is configured to receive the fluid inlet IV tube at a first connector disposed on a side wall of the body and to receive the fluid outlet IV tube at a second connector disposed on an opposing side wall of the body,
wherein a full open channel is disposed through a width of the slide switch and is aligned with the first and second connectors in the first position, and
wherein a KVO channel is disposed through the width of the slide switch and is aligned with the first and second connectors in the second position.

18. The KVO infusion flow control device of claim 16 , wherein the switch comprises a rocker switch pivotably disposed in a tube channel of the body,
wherein a first portion of the rocker switch is an open engagement member sized and shaped to engage the IV tubing such that the IV tubing is not occluded when the rocker switch is in the first position, and
wherein a second portion of the rocker switch is a KVO engagement member sized and shaped to engage the IV tubing such that the IV tubing is occluded when the rocker switch is in the second position.

19. The KVO infusion flow control device of

Assignees

• Carefusion 303 Inc

Inventors

• Tan Benjamin Yang Teck

Classifications

• A61M5/16877

  Adjusting flow; Devices for setting a flow rate · CPC title

• A61M2039/1088

  having a plurality of male connectors, e.g. Luer connectors · CPC title

• A61M2039/1083

  having a plurality of female connectors, e.g. Luer connectors · CPC title

• A61M2005/3125

  specific display means, e.g. to indicate dose setting · CPC title

• A61M2005/14208

  with a programmable infusion control system, characterised by the infusion program · CPC title