Latch assembly for joining two conduits

• US 8,235,426 B2
• Filed: 07/03/2008
• Issued: 08/07/2012
• Est. Priority Date: 07/03/2008
• Status: Active Grant

• Current Assignee: Nordson Corporation
• Original Assignee: Nordson Corporation
• Inventors: Pisula, James D. Jr., Narayanan, Ravikumar, Lombardi, Francis J. III, Elshof, Robert J., Lalouette, Marc, Williams, Bruce A.
• Primary Examiner(s): BOCHNA, DAVID
• Application Number:
  US12/167,833
• Publication Number:
  US 20100001516A1
• Time in Patent Office: 1,496 Days
• Field of Search: 285/305, 285/308, 285/317, 285/921
• US Class Current: 285/308
• CPC Class Codes: A61M 2039/1016 Unlocking means providing a secure or comfortable disconnection
• CPC Class Codes: A61M 2039/1027 Quick-acting type connectors
• CPC Class Codes: A61M 39/10 Tube connectors; Tube couplings A61M39/02 takes precedence; connecting needles to syringes or hubs A61M5/34; connecting catheter tubes to hubs A61M25/0014
• CPC Class Codes: A61M 39/1011 Locking means for securing connection; Additional tamper safeties A61M39/16 takes precedence
• CPC Class Codes: F16L 37/0982 with a separate member for releasing the coupling
• CPC Class Codes: F16L 37/0987 the flexible hook being progressively compressed by axial tensile loads acting on the coupling
• CPC Class Codes: Y10S 285/921 Snap-fit

Abstract

A latch assembly for connection of conduit, the assembly comprising a female portion and a male portion, wherein each of the female portion and the male portion have a shell and a connection device. The connection device of the female portion includes a connection assembly with a molded-in slot, a release button, and a raised rib or alternatively is a connection opening. The connection device of the male portion includes a cantilevered region with a ramped engagement feature or alternatively is a raised cantilevered release button. When connected the cantilevered region or button deflects to accommodate the female portion until the ramped engagement feature or button engages the molded-in slot or connection opening, thus releasing the deflection. Depressing the release button disengages the latch allowing separation of the assembly.

Claims

1. A connector assembly for coupling together first and second fluid conduits, the assembly comprising

a first connector including a proximal end for coupling with the first fluid conduit, a distal end opposite the proximal end, a fluid pathway between the proximal and distal ends, and a housing extending about at least a portion of the fluid pathway, wherein the housing includes a slot open to an inner cavity within the housing that at least partially defines a cantilevered release button within a wall of the housing extending distally to a free end of the cantilevered release button from a fixed end of the cantilevered release button;

and

a second connector including a proximal end for coupling with the second fluid conduit, a distal end opposite the proximal end, a fluid pathway between the proximal and distal ends, and a housing extending about at least a portion of the fluid pathway, wherein a wall of the housing defines a cantilevered region therein extending proximally to a free end of the cantilevered region from a fixed end of the cantilevered region with an engagement feature near the free end of the cantilevered region, wherein

when the distal ends of the connectors are moved towards each other in opposed fashion, the cantilevered region passes underneath the slot to allow the engagement feature to engage the slot and connect the first connector to the second connector.

2. The assembly of claim 1, wherein, when the first and second connectors are connected together, pressing inward on the cantilevered release button causes the cantilevered release button to displace the cantilevered region inward.

3. The assembly of claim 2, wherein the cantilevered region displacing inward causes the engagement feature to disengage from the slot.

4. The assembly of claim 2, wherein the engagement feature comprises a ramped portion engaged by the cantilevered release button such that when the cantilevered release button is pressed inward, the contact between the cantilevered release button and the ramped portion results in an axial force that biases the distal ends axially away from each other.

5. The assembly of claim 1, wherein the slot is immediately adjacent to the cantilevered release button.

6. The assembly of claim 1, wherein at least one of the proximal ends is a barbed connector.

7. The assembly of claim 1, wherein when the first and second connectors are connected, the fluid pathways of the first and second connectors are in fluid communication with each other in a male-female mating arrangement.

8. The assembly of claim 7, wherein the fluid pathway of the first connector has a male mating configuration and the fluid pathway of the second connector has a female mating configuration.

9. The assembly of claim 1, wherein the housings of the connectors form a male-female mating arrangement with the second connector housing being the male and the first connector housing being the female.

10. A connector assembly for coupling together first and second fluid conduits, the assembly comprising

a first connector including a proximal end for coupling with the first fluid conduit, a distal end opposite the proximal end, a fluid pathway between the proximal and distal ends, and a housing extending about at least a portion of the fluid pathway, wherein a wall of the housing defines a cantilevered button and a free end of the cantilevered button extends towards the proximal end of the first connector;

and

a second connector including a proximal end for coupling with the second fluid conduit, a distal end opposite the proximal end, a fluid pathway between the proximal and distal ends, and a housing extending about at least a portion of the fluid pathway, wherein a wall of the housing defines a connection opening therein that is open to an inner cavity within the housing, wherein

when the distal ends of the connectors are moved towards each other in opposed fashion, the cantilevered button passes underneath the connection opening to be received in the connection opening, engage the connection opening, and connect the first connector to the second connector.

11. The assembly of claim 10, wherein a fixed end of the cantilevered button at least partially forms a leading distal edge of the first connector.

12. The assembly of claim 10, wherein a slot defines the cantilevered button in the wall of the housing of the first connector.

13. The assembly of claim 10, wherein, when the first and second connectors are connected together, pressing inward on the cantilevered button causes the cantilevered button to disengage from the connection opening.

14. The assembly of claim 10, wherein at least one of the proximal ends is a barbed connector.

15. The assembly of claim 10, wherein, when the first and second connectors are connected, the fluid pathways of the first and second connectors are in fluid communication with each other in a male-female mating arrangement.

16. The assembly of claim 15, wherein the fluid pathway of the first connector has a male mating configuration and the fluid pathway of the second connector has a female mating configuration.

17. The assembly of claim 10, wherein the housings of the connectors form a male-female mating arrangement with the first connector housing being the male and the second connector housing being the female.

18. A latch assembly for the connection of conduits, the latch assembly comprising

a female portion including a shell, a slot defined within a wall of the shell such that the slot is open to an inner cavity within the shell, and a release button forming a part of the wall of the shell and defined at least partially by the slot;

and

a male portion including a shell that defines a cantilevered region within a wall of the shell, the cantilevered region further having an engagement feature;

wherein

the cantilevered region is adapted to deflect upon engagement with the female portion;

the engagement feature is adapted to engage the slot; and

the release button is adapted to disengage the engagement feature from the slot when depressed, thereby allowing separation of the female and male portions.

19. The latch assembly of claim 18, wherein the engagement feature engaging the slot at least partially releases the deflection of the cantilevered region.

20. The latch assembly of claim 18, wherein disengaging the engagement feature from the slot by depressing the release button creates an axial force that urges the female and male portions axially away from each other.

21. The latch assembly of claim 18, wherein the cantilevered region deflects inward upon engagement with the female portion.

22. The latch assembly of claim 18, wherein the release button and cantilevered region have free ends that face in opposite directions when the male and female portions are engaged with each other in a male-female arrangement.

23. A latch assembly for connection of conduits, the latch assembly comprising

a female portion including a shell and a connection opening defined within a wall of the shell that is open to an inner cavity within the shell;

and

a male portion including a shell having a slot open to an inner cavity within the shell and a cantilevered button defined at least partially by the slot within a wall of the shell;

wherein

the cantilevered button is adapted to deflect upon engagement with the female portion and further engage the connection opening;

the cantilevered button is adapted to disengage the connection opening when depressed, thereby allowing separation of the female and male portions; and

the cantilevered button has a free end that faces away from an end of the male portion that extends farthest into the female portion when the male and female ends are engaged.

24. The latch assembly of claim 23, wherein the cantilevered button engaging the opening at least partially releases the deflection of the cantilevered button.

25. The latch assembly of claim 23, wherein the cantilevered button deflects inward upon engagement with the opening.

26. The latch assembly of claim 23, wherein the cantilevered button has a free end and a fixed end and the fixed end is near an end of the male portion that extends farthest into the female portion when the male and female ends are engaged.

27. A connector assembly for coupling together first and second fluid conduits, the assembly comprising

a first connector including a proximal end for coupling with the first fluid conduit, a distal end opposite the proximal end, a fluid pathway between the proximal and distal ends, and a housing extending about at least a portion of the fluid pathway, wherein the housing includes a slot open to an inner cavity within the housing that at least partially defines a cantilevered release button within a wall of the housing extending distally to a free end of the cantilevered release button from a fixed end of the cantilevered release button;

and

a second connector including a proximal end for coupling with the second fluid conduit, a distal end opposite the proximal end, a fluid pathway between the proximal and distal ends, and a housing extending about at least a portion of the fluid pathway, wherein a wall of the housing defines a cantilevered region therein extending distally to a free end of the cantilevered region from a fixed end of the cantilevered region with an engagement feature near the free end of the cantilevered region, wherein

when the distal ends of the connectors are moved towards each other in opposed fashion, the cantilevered region passes underneath the slot to allow the engagement feature to engage the slot and connect the first connector to the second connector.

28. The assembly of claim 27, wherein, when the first and second connectors are connected together, pressing inward on the cantilevered release button causes the cantilevered release button to displace the cantilevered region inward.

29. The assembly of claim 28, wherein the cantilevered region displacing inward causes the engagement feature to disengage from the slot.

30. The assembly of claim 28, wherein the engagement feature comprises a ramped portion engaged by the cantilevered release button such that when the cantilevered release button is pressed inward, the contact between the cantilevered release button and the ramped portion results in an axial force that biases the distal ends axially away from each other.

31. The assembly of claim 27, wherein the slot is immediately adjacent to the cantilevered release button.

32. The assembly of claim 27, wherein at least one of the proximal ends is a barbed connector.

33. The assembly of claim 27, wherein, when the first and second connectors are connected, the fluid pathways of the first and second connectors are in fluid communication with each other in a male-female mating arrangement.

34. The assembly of claim 33, wherein the fluid pathway of the first connector has a male mating configuration and the fluid pathway of the second connector has a female mating configuration.

35. The assembly of claim 27, wherein the housings of the connectors form a male-female mating arrangement with the second connector housing being the male and the first connector housing being the female.