Keep vein open infusion flow control device

Patent metadata

Field	Value
Publication number	US-11400210-B2
Application number	US-202016862308-A
Country	US
Kind code	B2
Filing date	Apr 29, 2020
Priority date	Apr 29, 2020
Publication date	Aug 2, 2022
Grant date	Aug 2, 2022

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 flow controller coupled to the full flow tube,
wherein the flow control orifice comprises a tube engagement portion disposed within the KVO flow tube, the tube engagement portion having a narrower internal diameter than an internal diameter of the KVO flow tube, the tube engagement portion configured to provide a first restricted fluid flow rate from the KVO flow tube to the outlet tube connector.

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 7 , wherein the inlet connector is a female Luer connector and the outlet connector is a male Luer connector.

9. The KVO infusion flow control device of claim 1 , wherein the flow control orifice further comprises a restriction portion disposed within the outlet tube connector and 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 provide a second restricted fluid flow rate through the outlet tube connector, wherein the second restricted fluid flow rate is a KVO fluid flow rate that is less than the first restricted 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;
a full open member disposed on the body;
a KVO member disposed on the body separately from the full open member;
a control member coupled to the body, the control member comprising:
a cam disposed within a tube channel in the body, the cam slidably engaged with one or more cam channels in the body; and
a ramp disposed at a base of the tube channel; and

a visual indicator,
wherein a first position of the control member is configured to engage the full open member 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 member with the fluid flow path to provide KVO fluid flow through the IV tube,
wherein the body has a rectangular shape with the visual indicator disposed thereon, the body configured to receive the IV tube within the tube channel,
wherein the full open member is a first portion of the body having a low end of the ramp, the first portion of the body configured so that the IV tube is not occluded when the cam is in the first position, and
wherein the KVO member is a second portion of the body having a high end of the ramp, the second portion of the body configured to engage the IV tube such that the IV tube is partially occluded to provide the KVO fluid flow when the cam is engaged with the IV tube in the second position.

13. A keep vein open (KVO) infusion flow control device, comprising:
a body;
a full open member disposed on the body;
a KVO member disposed on the body separately from the full open member;
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 member 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 member with the fluid flow path to provide KVO fluid flow through the IV tube,
wherein the control member comprises a slide switch disposed within a switch channel in the body,
wherein the body is a rectangular shaped housing with the visual indicator disposed thereon, the rectangular shaped housing configured to receive a fluid inlet IV tube at a first connector disposed on a side wall of the body and to receive a fluid outlet IV tube at a second connector disposed on an opposing side wall of the body,
wherein the full open member is a full open channel disposed through a width of the slide switch, the full open channel configured to align with the first and second connectors in the first position, and
wherein the KVO member is a KVO channel disposed through the width of the slide switch, the KVO channel configured to align with the first and second connectors in the second position.

14. A keep vein open (KVO) infusion flow control device, comprising:
a body;
a full open member disposed on the body;
a KVO member disposed on the body separately from the full open member;
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 member 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 member with the fluid flow path to provide KVO fluid flow through the IV tube,
wherein the control member comprises a rocker switch pivotably disposed in a tube channel of the body, the rocker switch having the visual indicator disposed thereon and the body configured to receive the IV tube in the tube channel,
wherein the full open member is a first portion of the rocker switch having an open engagement member sized and shaped to engage the IV tube such that the IV tube is not occluded when the rocker switch is in the first position, and
wherein the KVO member is a second portion of the rocker switch having a KVO engagement member sized and shaped to engage the IV tube such that the IV tube is occluded when the rocker switch is in the second position.

15.

Assignees

• Carefusion 303 Inc

Inventors

• Tan Benjamin Yang Teck

Classifications

• A61M5/16877

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

• A61M5/16813 Primary

  by controlling the degree of opening of the flow line · CPC title

• A61M39/285

  Cam clamps, e.g. roller clamps with eccentric axis · CPC title

• A61M39/28

  Clamping means for squeezing flexible tubes, e.g. roller clamps {(tube strippers A61M1/83)} · CPC title

• A61M39/286

  Wedge clamps, e.g. roller clamps with inclined guides · CPC title