Needle free I.V. adapter

• US 5,201,725 A
• Filed: 09/26/1991
• Issued: 04/13/1993
• Est. Priority Date: 09/26/1991
• Status: Expired due to Term

• Current Assignee: Carefusion 303 Incorporated (Becton, Dickinson & Co)
• Original Assignee: Ivax Corporation (Teva Pharmaceutical Industries, Ltd.)
• Inventors: Kling, John E.
• Primary Examiner(s): Rosenbaum, C. Fred
• Assistant Examiner(s): MENDEZ, MANUEL A
• Application Number:
  US07/765,807
• Time in Patent Office: 565 Days
• Field of Search: 604/256, 604/167, 604/284, 604/240-242, 604/246, 604/249, 604/82, 604/83, 604/239, 604/241, 604/283, 604/905, 604/34, 251/348, 251/342
• US Class Current: 604/284
• CPC Class Codes: A61M 39/02 Access sites
• CPC Class Codes: A61M 39/26 Valves closing automatically on disconnecting the line and opening on reconnection thereof check valves A61M39/24

Abstract

A medical connector assembly comprises a connector body having a fluid passage there through, a valve member, and means, responsive to a compressive force placed on the medical connector, for permitting a fluid to freely communicate between openings in the connector body. The valve member can be constructed using a single element having a slit therein or it can be constructed using two separate halves which when joined together form an interface slit. In a preferred embodiment, when a compressive force is exerted against the connector body, sufficient distortion is experienced by the valve member to open the slit and permit fluid flow between connector body openings.

Claims

1. A medical connector comprising:

a connector body having first and second openings and a first internal wall joining said first and second openings, first internal wall forming a first fluid passage for communicating a first fluid between said first and second openings,

a valve member disposed in said first fluid passage, said valve member adapted to prevent said first fluid from communicating between said first and second openings through said first fluid passage,

flow permitting means, responsive to a compressive force placed on said medical connector, for permitting said first fluid to freely communicate between said first and second openings through said first fluid passage;

said connector body further comprises a third opening and a second internal wall, said second internal wall joining said third opening to said first fluid passage, said second internal wall forming a second fluid passage for communicating a second fluid between said third opening and said first fluid passage, and

further including a female fastener adapted to engage and compress said medical connector thereby activating said flow permitting means and allowing said first fluid to communicate between said first and second openings through said first fluid passage.

2. The medical connector of claim 1, wherein said connector body includes a relieved portion thereby improving the responsiveness of said medical connector to said compressive force placed on said medical connector.

3. The medical connector of claim 2, wherein said relieved portion of said connector body is located proximate said first opening of said connector body.

4. The medical connector of claim 1, wherein said flow permitting means includes a slit passing through said valve member.

5. The medical connector of claim 1, wherein said valve member is disposed in said first fluid passage proximate said first opening.

6. The medical connector of claim 5, wherein a portion of said valve member extends beyond said first fluid passage and includes a fluid delivery mating surface.

7. The medical connector of claim 1, wherein said valve member is comprised of an elastomer material .

8. The medical connector of claim 1, wherein said valve member is comprised of two separate halves, each said half including a mating surface, said valve halves adapted to contact one another along their mating surfaces, said contact between said mating surfaces forming an interface slit between said valve halves wherein said flow permitting means includes said interface slit between said valve halves.

9. The medical connector of claim 1, wherein said connector body includes first and second relieved portions, and wherein said valve member is disposed between said first and second relieved portions.

10. The medical connector of claim 9, wherein said flow permitting means includes a generally planar slit passing through said valve member, and wherein said plane of said slit is generally perpendicular to a line passing through said first and second relieved portions of said connector body.

11. The medical connector of claim 1, wherein said female fastener includes thread means for threadedly engaging said connector body portion of said medical connector.

12. The medical connector of claim 11, wherein said thread means includes a bore disposed in said female fastener, said bore having a sloping, concentric side walls.

13. The medical connector of claim 11, wherein said thread means includes a bore disposed in said female fastener, said bore having non-concentric side walls.

14. The medical connector of claim 1, wherein said female fastener and said valve member both include fluid delivery mating surfaces, and wherein said female fastener includes a fluid delivery passage which terminates at said fastener fluid delivery mating surface whereby when said female fastener engages and compresses said medical connector body, said fluid delivery mating surfaces of said female fastener and said valve member are pressingly engaged, thereby allowing said first fluid to communicate between said fluid delivery passage of the female fastener and said first fluid passage of the connector body.

15. The medical connector of claim 14, wherein said fluid delivery mating surface of said female fastener and said valve member are generally planar.

16. A medical connector comprising:

a connector body having first and second openings and a first internal wall joining said first and second openings, said first internal wall forming a first fluid passage for communicating a first fluid between said first and second openings,

a valve member disposed in said first fluid passage, said valve member adapted to prevent said first fluid from communicating between said first and second openings through said first fluid passage;

female fastener adapted to engage and compress said medical connector;

flow permitting means, responsive to a compressive force placed on said medical connector by said female fastener, for permitting said first fluid to freely communicate between said first and second openings through said first fluid passage, and

said connector body further comprises a third opening and a second internal wall, said second internal wall joining said third opening to said first fluid passage, said second internal wall forming a second fluid passage for communicating a second fluid between said third opening and said first fluid passage.

17. The medical connector of claim 16, wherein said connector body includes a relieved portion thereby improving the responsiveness of said medical connector to said compressive force placed on said medical connector and wherein said relieved portion of said connector body is located proximate said first opening of said connector body.

18. The medical connector of claim 16 wherein said flow permitting means includes a slit passing through said valve member.

19. The medical connector of claim 16, wherein said valve member is disposed in said first fluid passage proximate said first opening and wherein a portion of said valve member extends beyond said first fluid passage and includes a fluid delivery mating surface.

20. The medical connector of claim 16, wherein said valve member is comprised of an elastomer material.

21. The medical connector of claim 16, wherein said valve member is comprised of two separate halves, each said half including a mating surface, said valve halves adapted to contact one another along their mating surfaces, said contact between said mating surfaces forming an interface slit between said valve halves wherein said flow permitting means includes said interface slit between said valve halves.

22. The medical connector of claim 16, wherein said connector body includes first and second relieved portions, and wherein said valve member is disposed between said first and second relieved portions and wherein said flow permitting means includes a generally planar slit passing through said valve member, and wherein said plane of said slit is generally perpendicular to a line passing through said first and second relieved portions of said connector body.

23. The medical connector of claim 16, wherein said female fastener includes thread means for threadedly engaging said connector body portion of said medical connector.

24. The medical connector of claim 23, wherein said thread means includes a bore disposed in said female fastener, said bore having sloping, concentric side walls.

25. The medical connector of claim 23, wherein said thread means includes a bore disposed in said female fastener, said bore having non-concentric side walls.

26. The medical connector of claim 16, wherein said female fastener and said valve member both include fluid delivery mating surfaces, and wherein said female fastener includes a fluid delivery passage which terminates at said fastener fluid delivery mating surface whereby when said female fastener engages and compresses said medical connector body, said fluid delivery mating surfaces of said female fastener and said valve member are pressingly engaged, thereby allowing said first fluid to communicate between said fluid delivery passage of the female fastener and said first fluid passage of the connector body and wherein said fluid delivery mating surface of said female fastener and said valve member are generally planar.