Valved intravenous fluid line connector

• US 5,520,666 A
• Filed: 12/06/1994
• Issued: 05/28/1996
• Est. Priority Date: 12/06/1994
• Status: Expired due to Term

• Current Assignee: Hospira Incorporated (Pfizer Inc.)
• Original Assignee: Abbott Laboratories
• Inventors: Choudhury, Hrishikesh, Helgren, R. Hayes, Valentincic, Charles C.
• Primary Examiner(s): Maglione, Corrine M.
• Assistant Examiner(s): Gring, N. Kent
• Application Number:
  US08/350,370
• Time in Patent Office: 539 Days
• Field of Search: 137/605, 604/30, 604/33, 604/167, 604/169, 604/170, 604/249, 604/283, 604/905
• US Class Current: 604/537
• CPC Class Codes: A61M 39/045 pre-slit to be pierced by blunt instrument
• CPC Class Codes: Y10S 604/905 Aseptic connectors or couplings, e.g. frangible, piercable

Abstract

A valve including a substantially rigid cannula and a valve member positioned for operable communication with the cannula. The valve member is formed from a substantially resilient material, having a slit extending therethrough, and movable with respect to the cannula between a first closed position and a second open position. The slit is substantially closed by the resiliency of the material of the valve member when the valve member is positioned in the first closed position and the cannula cooperates to extend through the slit during movement of the valve member 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 independent from a flow of fluid within the fluid flow path to provide positive sealing of the slit when the valve member is positioned in the first closed position.

Claims

1. A valve, comprising:

a substantially rigid cannula;

a valve member connected for operable communication with said cannula, said valve member being formed from a substantially resilient material having a slit extending therethrough and movable with respect to said cannula between a first closed position and a second open position, said slit being substantially closed by the resiliency of said material of said valve member when said valve member is positioned in said first closed position, said cannula cooperating to extend through said slit 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 located on the valve member independent from a flow of fluid within said fluid flow path for automatically providing radially inward circumferential support for positive sealing of said slit when said valve member is positioned in said first closed position.

2. The valve in accordance with claim 1 wherein said cannula is a blunt cannula.

3. 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 valve member to said first closed position from said second open position upon disconnecting said valve member from a fluid line component.

4. The valve in accordance with claim 3 wherein said spring means are integrally formed as a portion of said valve member.

5. The valve in accordance with claim 3 wherein said spring means are a helical spring member.

6. The valve in accordance with claim 1 wherein said valve member is activated by a male luer member connected thereto to provide movement between said first and second positions.

7. The valve in accordance with claim 1 wherein at least a portion of said valve member is accessible for cleaning thereof.

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

a housing;

a substantially rigid cannula mounted within said housing;

a valve member positioned within said housing for operable communication with said cannula, said valve member being formed from a substantially resilient material having a slit extending therethrough and being movable within said housing between a first closed position and a second open position, said slit being substantially closed by the resiliency of said material of said valve member when said valve member is positioned in said first closed position, said cannula cooperating to extend through said slit 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 located on the valve member independent from a flow of fluid within said fluid flow path for automatically providing radially inward circumferential support for positive sealing of said slit when said valve member is positioned in said first closed position.

9. The connector in accordance with claim 8 wherein said cannula is a blunt cannula.

10. The connector in accordance with claim 8 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 disconnecting said valve member from the intravenous fluid line.

11. The connector in accordance with claim 10 wherein said spring means are integrally formed as a portion of said valve member.

12. The connector in accordance with claim 10 wherein said spring means are a helical spring member.

13. The connector in accordance with claim 10 wherein said valve member includes a portion for cooperative engagement with an inside diameter of said spring to seal said valve member against said cannula.

14. The connector in accordance with claim 8 wherein said valve member is activated by a male luer member connected thereto to provide movement between said first and second positions.

15. The connector in accordance with claim 8 wherein at least a portion of said valve member is accessible from the exterior of the housing for cleaning thereof.

16. The connector in accordance with claim 8 wherein said sealing means include a portion of said valve member having a predetermined configuration selected for cooperative sealing engagement with a portion of said housing to provide said automatic positive sealing of said slit.

17. The connector in accordance with claim 16 wherein said portion of said valve member is an outwardly extending lip integrally formed with said resilient material of said valve member.

18. The connector in accordance with claim 16 wherein said portion of said valve member is a tapered engagement portion integrally formed with said resilient material of said valve member.

19. The connector in accordance with claim 8 including first and second connection means for attaching desired medical components thereto and establishing a flow path therebetween.