Air eliminating intravenous infusion pump set

• US 5,308,333 A
• Filed: 05/24/1993
• Issued: 05/03/1994
• Est. Priority Date: 12/06/1991
• Status: Expired due to Term

• Current Assignee: Baxter International Inc.
• Original Assignee: Baxter International Inc.
• Inventors: Skakoon, James G.
• Primary Examiner(s): Yasko, John D.
• Assistant Examiner(s): CERMAK, ADAM
• Application Number:
  US08/066,916
• Time in Patent Office: 344 Days
• Field of Search: 604/122, 604/123, 604/126, 604/251, 604/247, 604/252, 604/256, 604/81, 604/82, 128/DIG. 12
• US Class Current: 604/110
• CPC Class Codes: A61M 39/24 Check- or non-return valves
• CPC Class Codes: A61M 5/142 Pressure infusion, e.g. using pumps
• CPC Class Codes: A61M 5/14228 with linear peristaltic action, i.e. comprising at least three pressurising members or a helical member
• CPC Class Codes: A61M 5/36 with means for eliminating or preventing injection or infusion of air into body dialysis systems, blood oxygenators A61M1/14; haemofiltration equipment A61M1/34; automatic tube cut-off A61M39/281
• CPC Class Codes: A61M 5/38 using hydrophilic or hydrophobic filters

Abstract

An intravenous set includes a spike or luer connector for receiving pharmaceutical product solution, a pumping section, an air eliminating filter, an anti-siphon valve and a connector for an IV access device. The air eliminating filter includes an in-line hydrophilic membrane and a hydrophobic membrane upstream thereof to vent trapped gases to the atmosphere. The anti-siphon valve has a positive crack pressure and is located downstream of the air eliminating filter.

Claims

1. An intravenous set having an upstream end and a downstream end and comprising:

receiving means for receiving a supply of pharmaceutical product solution at the upstream end;

peristaltic pumping section means in fluid communication with said receiving means, said peristaltic pumping section means being arranged and constructed to interface with a peristaltic pump;

an air eliminating filter in fluid communication with said pumping section means for receiving said solution propelled by said peristaltic pump form said receiving means;

a positive crack pressure anti-siphon valve downstream from said air eliminating filter, wherein said valve is arranged to maintain said solution within said eliminating filter at a preselected threshold level above atmospheric pressure, wherein said valve precludes flow of solution through sad valve in the direction of said means for receiving a supply of pharmaceutical product solution and wherein said valve seals to prevent flow of solution through said valve away from said means for receiving a supply of pharmaceutical product solution when pressure across said valve as measured from said air eliminating filter to atmosphere falls below a predetermined positive threshold; and

means for engaging an IV access device downstream from said valve at the downstream end.

2. The intravenous set of claim 1 wherein said means for receiving pharmaceutical product solution includes a spike with a lumen therethrough.

3. The intravenous set of claim 1 wherein the means for receiving pharmaceutical product solution includes a first LUER connector means.

4. The intravenous set of any of claims 1, 2 or 3 wherein said air eliminating filter includes a first membrane which allows the passage of liquid therethrough but which precludes the passage of gas therethrough and a second membrane which allows the passage of gas to vent to the atmosphere but which precludes the passage of liquids therethrough.

5. The intravenous set of claim 4 wherein said first membrane is a hydrophilic membrane and wherein said second membrane is a hydrophobic membrane.

6. The intravenous set of claim 4 wherein said pumping section means and said air eliminating filter are in fluid communication via a second Luer connector.

7. The intravenous set of claim 4 wherein said means for engaging an IV access device includes a further Luer connector.

8. An intravenous set having an upstream end and a downstream end and including:

receiving means for receiving a supply of pharmaceutical product solution at the upstream end;

peristaltic pumping section means in fluid communication with said receiving means for receiving a supply of pharmaceutical product solution;

an air elimination filter in fluid communication with said pumping section means for receiving said solution propelled by said peristaltic pump from said receiving means;

a positive crack pressure anti-siphon valve downstream from said air eliminating filter wherein said valve is arranged to maintain said solution in said air elimination filter at a preselected threshold level above atmospheric pressure;

wherein said valve seals to prevent flow of solution through said valve when pressure across said valve as measured from said air eliminating filter to atmosphere falls below a predetermined positive threshold; and

means for engaging an IV access device downstream from said valve at the downstream end.

9. The intravenous set of claim 8 wherein said positive crack pressure valve includes means that prevent free flow of solution into a patient.

11. The intravenous set of claim 8 wherein said valve has a crack pressure of between 1.5 and 3.5 psi.

10. The intravenous set of claim wherein said valve precludes flow of solution through said valve in the direction of said means for receiving a supply of pharmaceutical product solution.