Valved intravenous fluid line infusion device

• US 5,549,566 A
• Filed: 10/27/1994
• Issued: 08/27/1996
• Est. Priority Date: 10/27/1994
• Status: Expired due to Term

• Current Assignee: Hospira Incorporated (Pfizer Inc.)
• Original Assignee: Abbott Laboratories Incorporated
• Inventors: Elias, Allen M., Kramer, David E., Frederick, Warren P.
• Primary Examiner(s): Hirsch, Paul J.
• Application Number:
  US08/330,284
• Time in Patent Office: 670 Days
• Field of Search: 604/167, 604/169, 604/256
• US Class Current: 604/167.03
• CPC Class Codes: A61M 39/045 pre-slit to be pierced by blunt instrument

Abstract

A valve including a substantially rigid cannula and a valve member connected for operable communication with the cannula. The valve member is formed from a substantially resilient material and is movable with respect to the cannula between a first closed position and a second open position. The cannula cooperates to extend through the valve member during movement from the first closed position to the second open position to establish a fluid flow path through the cannula and the valve member. A sealing member is also provided which operates independent from a flow of fluid within the fluid flow path and independent from any component utilized with the valve to automatically provide positive sealing of an opening within the valve member when the valve member is positioned in the first closed position, the cannula extending through the opening during movement of the valve member.

Claims

1. A valve, comprising:

a substantially rigid cannula;

a generally cylindrical valve member connected for operable communication with said cannula, said valve member being formed from a substantially resilient material and having a solid head portion with an outer periphery and a hollow body portion extending axially from said head portion, said head portion being movable with respect to said cannula between a first closed position and a second open position, said cannula cooperating to extend through said head portion of said valve member during movement from said first closed position to said second open position to establish a fluid flow path through said cannula and said valve member;

and

sealing means independent from a flow of fluid within said fluid flow path and independent from any component utilized with said valve and circumferentially engaging said outer periphery of the head portion for automatically providing positive sealing of an opening through said head portion of said valve member when said head portion of said valve member is positioned in said first closed position, said cannula extending through said opening during said movement of said valve member, wherein said sealing means moves with said head portion.

2. The valve in accordance with claim 1 wherein said head portion of said valve member includes a preformed slit forming said opening through which said cannula extends.

3. The valve in accordance with claim 2 wherein said cannula is a blunt cannula.

4. The valve in accordance with claim 1 wherein said cannula is pointed and said opening is provided in said head portion of said valve member upon advancement of said cannula therethrough.

5. The valve in accordance with claim 1 including spring means for maintaining said valve member in said first closed position when said valve member is not in use and for automatically returning said vane member to said first closed position from said second open position upon disassembly of said valve member from a fluid delivery system.

6. The valve in accordance with claim 5 wherein said spring means are formed as a portion of said material of said valve member.

7. The valve in accordance with claim 5 wherein said spring means are formed as a separate helical spring.

8. The valve in accordance with claim 1 wherein said valve member includes a portion thereof for activation by a male luer member for providing movement between said first and second positions.

9. A connector for an intravenous fluid line, comprising:

a housing;

a substantially rigid cannula mounted within said housing;

a generally cylindrical valve member positioned within said housing for operable communication with said cannula, said valve member being formed from a substantially resilient material and having a solid head portion with an outer periphery and a hollow body portion extending axially from said head portion, said head portion movable within said housing between a first closed position and a second open position, said cannula extending through said head portion of said valve member during movement of said valve member from said first closed position to said second open position to establish a fluid flow path through said cannula and said valve member; and

sealing means independent from a flow of fluid within said flow path and independent from said housing and circumferentially engaging said outer periphery of the head portion for automatically providing positive sealing of an opening through said head portion of said valve member when said valve member is positioned in said first closed position, said cannula extending through said opening during said movement of said valve member wherein said sealing means moves with said head portion.

10. The connector in accordance with claim 9 wherein said head portion of said valve member includes a preformed slit forming said opening through which said cannula extends.

12. The connector in accordance with claim 9 wherein said cannula is pointed and said opening is provided in said head portion of said valve member upon advancement of said cannula therethrough.

13. The connector in accordance with claim 9 including spring means for maintaining said valve member in said first closed position when said valve member is not in use and for automatically returning said valve member to said first closed position from said second open position upon disassembly of said valve member from a fluid delivery system.

14. The connector in accordance with claim 13 wherein said spring means are formed as a portion of said material of said valve member.

15. The connector in accordance with claim 13 wherein said spring means are formed as a separate helical spring.

16. The connector in accordance with claim 9 wherein said valve member includes a portion thereof for activation by a male luer member connected thereto to provide movement between said first and second positions.

17. The connector in accordance with claim 9 wherein at least a portion of said valve member is accessible from the exterior of said housing for cleaning thereof.

18. The connector in accordance with claim 9 wherein said sealing means include an annular engagement member to provide reinforcement of said head portion of said valve member independent from said housing.

19. The connector in accordance with claim 18 wherein said engagement member includes a compression ring positioned about the periphery of said head portion of said valve member which allows for passage of the cannula through the opening while providing a leak-proof seal to the opening upon removal of the cannula.

11. The connector in accordance with 10 wherein said cannula is a blunt cannula.