Luer connecting coupling

• US 5,738,144 A
• Filed: 10/11/1996
• Issued: 04/14/1998
• Est. Priority Date: 10/11/1996
• Status: Expired due to Term

• Current Assignee: Span-America Medical Systems Inc. (Savaria Corp.)
• Original Assignee: Aeroquip Corporation (Eaton Corporation PLC.)
• Inventors: Rogers, Russell L.
• Primary Examiner(s): CHAMBERS, A MICHAEL
• Application Number:
  US08/729,402
• Time in Patent Office: 550 Days
• Field of Search: 137/614.03, 251/149.4, 251/149.6, 251/149.1
• US Class Current: 137/614.03
• CPC Class Codes: A61M 39/26 Valves closing automatically on disconnecting the line and opening on reconnection thereof check valves A61M39/24
• CPC Class Codes: Y10T 137/87949 Linear motion of flow path sections operates both

Abstract

A luer connecting coupling including a first body member, a resilient seal, a second body member, a tubular valve and a reciprocating valve sleeve. The first body member defines a passageway. The resilient seal is positioned in the passageway. The second body member defines a chamber. The tubular valve is positioned in the chamber. The tubular valve defines at least one fluid opening. The reciprocating valve sleeve is in communication with the tubular valve. The sleeve is movable between a first position and a second position to close or open the fluid opening of the tubular valve. When the coupling is disconnected, the components are self-sealing.

Claims

1. A luer body member having an exterior surface and an interior surface, said interior surface defining a passageway having a shoulder;

a resilient seal positioned in said passageway adjacent said shoulder for sealing said passageway;

a second body member having an outer surface and an inner surface, said inner surface defining a chamber;

a tubular valve having a seal end and a body end positioned in said chamber, said valve including a channel extending between said seal end and said body end, said valve defining at least one fluid opening in communication with said channel adjacent said seal end, said seal end being in communication with said resilient seal to respectively unseat and seat said resilient seal with respect to said shoulder; and

a valve sleeve in communication with said tubular valve, said sleeve being movable between a first position and a second position to respectively close and open said fluid opening of said valve.

2. The coupling of claim 1, wherein said first body member further includes a first end, said coupling including an adapter for receiving tubing positioned at said first end.

3. The coupling of claim 1, wherein said first body member further includes a second end, said second end including threads.

4. The coupling of claim 1, wherein said resilient seal includes a shoulder surface for engaging said shoulder.

5. The coupling of claim 1, wherein said resilient seal includes an annular wall defining at least one fluid recess.

6. The coupling of claim 1, wherein said resilient seal is comprised of rubber.

7. The coupling of claim 1, wherein said second body member includes a proximal end and a distal end.

8. The coupling of claim 7, wherein said proximal end includes threads.

9. The coupling of claim 7, wherein said distal end is adapted to receive tubing.

10. The coupling of claim 7, wherein said inner surface adjacent said distal end defines a second passageway in communication with said channel.

11. The coupling of claim 7, wherein said inner surface adjacent said distal end defines a valve recess for receiving said body end of said tubular valve.

12. The coupling of claim 7, wherein said inner surface adjacent said distal end defines a sleeve shoulder in communication with said valve sleeve.

13. The coupling of claim 1, wherein said valve sleeve includes an outside surface, an inside surface, a channel end and a spring end.

14. The coupling of claim 13, wherein said outside surface defines an O-ring recess adjacent said spring end, an O-ring positioned in said O-ring recess.

15. The coupling of claim 13, wherein said outside surface is tapered at said channel end.

16. The coupling of claim 13, wherein said inside surface defines a spring cavity adjacent said spring end, a spring positioned in said spring cavity.

17. The coupling of claim 13, wherein said inside surface defines a tubular valve cavity for receiving said tubular valve.

18. The coupling of claim 13, wherein said inside surface defines a shape corresponding to said seal end of said tubular valve adjacent said channel end.